PIONEER CORPORATION 4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153-8654, Japan PIONEER ELECTRONICS SERVICE INC. P.O.Box 1760, Long Beach, CA 90801-1760 U.S.A. PIONEER ELECTRONIC [EUROPE] N.V. Haven 1087 Keetberglaan 1, 9120 Melsele, Belgium PIONEER ELECTRONICS ASIACENTRE PTE.LTD. 253 Alexandra Road, #04-01, Singapore 159936 C PIONEER CORPORATION 1999 K-ZZB. OCT. 1999 Printed in Japan ORDER NO. CRT2398 MULTI-CD CONTROL HIGH POWER CASSETTE PLAYER WITH FM/AM TUNER KEH-P490�X1M/UC Service Manual CONTENTS 1. SAFETY INFORMATION ............................................2 2. EXPLODED VIEWS AND PARTS LIST.......................2 3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM .....9 4. PCB CONNECTION DIAGRAM ................................24 5. ELECTRICAL PARTS LIST ........................................33 6. ADJUSTMENT..........................................................40 7. GENERAL INFORMATION .......................................42 7.1 DISASSEMBLY ...................................................42 7.2 PARTS .................................................................43 7.2.1 IC.................................................................43 7.2.2 DISPLAY .....................................................47 8. OPERATIONS AND SPECIFICATIONS.....................48 KEH-P490/X1M/UC KEH-P4950�X1M/ES KEH-P4900�X1M/UC - This service manual should be used together with the following manual(s): Model No. Order No. Mech. Module Remarks CX-1011 CRT2406 3L Cassette Mech. Module:Mech.Description and Greasing, Disassembly, Adjustment - This service manual does not describe the CD test mode. For the operations in the CD test mode, refer to the CD player's Service manual. www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com KEH-P490,P4900,P4950 2. EXPLODED VIEWS AND PARTS LIST 2.1 PACKING 3 6 10 2 9 8 7 5 4 15 17 18 11 14 13 12 16 1 19 20 1. SAFETY INFORMATION CAUTION This service manual is intended for qualified service technicians; it is not meant for the casual do-it-yourselfer. Qualified technicians have the necessary test equipment and tools, and have been trained to properly and safely repair complex products such as those covered by this manual. Improperly performed repairs can adversely affect the safety and reliability of the product and may void the warranty. If you are not qualified to perform the repair of this product properly and safely; you should not risk trying to do so and refer the repair to a qualified service technician. WARNING This product contains lead in solder and certain electrical parts contain chemicals which are known to the state of California to cause cancer, birth defects or other reproductive harm. Health & Safety Code Section 25249.6 - Proposition 65 2 www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com KEH-P490,P4900,P4950 3 NOTE: - Parts marked by “*” are generally unavailable because they are not in our Master Spare Parts List. - Screws adjacent to ∇ mark on the product are used for disassembly. - Owner's Manual, Installation Manual Model Part No. Language KEH-P490/X1M/UC CRD3090 English, French CRD3091 English, French KEH-P4900/X1M/UC CRD3088 English, French, Spanish CRD3089 English, French, Spanish KEH-P4950/X1M/ES CRD3083 English, Spanish, Portuguese(B) CRD3084 Chinese, Arabic CRD3085 English, Spanish, Portuguese(B), Chinese, Arabic - PACKING SECTION PARTS LIST Part No. Mark No. Description KEH-P490/X1M/UC KEH-P4900/X1M/UC KEH-P4950/X1M/ES * 1 Accessory Assy CEA2350 CEA2350 CEA2350 2 Spring CBH1650 CBH1650 CBH1650 3 Screw Assy CEA2351 CEA2351 CEA2351 4 Screw CBA1304 CBA1304 CBA1304 * 5 Polyethylene Bag CEG-127 CEG-127 CEG-127 6 Screw CRZ50P090FMC CRZ50P090FMC CRZ50P090FMC 7 Screw TRZ50P080FMC TRZ50P080FMC TRZ50P080FMC * 8 Polyethylene Bag CEG-158 CEG-158 CEG-158 9 Handle CNC5395 CNC5395 CNC5395 10 Bush CNV3930 CNV3930 CNV3930 11 Polyethylene Bag CEG1173 CEG1173 CEG-162 12 Carton CHG3893 CHG3889 CHG3890 13 Contain Box CHL3893 CHL3889 CHL3890 14 Protector CHP2244 CHP2244 CHP2244 15 Protector CHP2243 CHP2243 CHP2243 16-1 Owner’s Manual CRD3090 CRD3088 CRD3083 16-2 Owner’s Manual Not used Not used CRD3084 16-3 Installation Manual CRD3091 CRD3089 CRD3085 * 16-4 Warranty Card CRY1070 CRY1070 Not used * 16-5 Card Not used ARY1048 Not used 17 Cord assy CDE6222 CDE6222 CDE6222 18 Case assy CXB3520 CXB3520 CXB3520 19 Battery CEX1030 Not used Not used 20 Remote Control Unit CXB4284 Not used Not used www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 4 KEH-P490,P4900,P4950 69 20 23 25 9 8 17 16 18 13 24 14 26 14 6 19 5 12 33 32 15 28 27 31 22 21 10 2 2 2 3 3 47 30 54 67 57 52 53 55 51 56 50 58 49 63 61 60 65 66 64 62 48 48 48 59 34 37 46 46 43 11 46 46 44 45 42 36 39 35 41 40 38 4 29 1 1 1 1 68 7 2 A A 2.2 EXTERIOR www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 5 KEH-P490,P4900,P4950 1 Screw BSZ26P050FMC 2 Screw BSZ30P050FMC 3 Screw BSZ30P200FMC 4 Cord Assy CDE6222 5 Fuse(10A) CEK1136 6 Transistor(Q904) 2SD2396 7 Case CNB2350 8 Holder CNC5704 9 Cushion CNM5210 10 Insulator CNM5963 11 Panel CNS5132 12 Tuner Amp Unit See Contrast table(2) 13 Screw BPZ26P080FMC 14 Screw BSZ26P080FMC 15 Screw BSZ26P160FMC 16 FM/AM Tuner Unit See Contrast table(2) 17 Holder CNC6554 18 Pin Jack(CN301) CKB1035 19 Plug(CN603) CKM1270 20 Connector(CN701) CKS3408 21 Connector(CN602) CKS3568 22 Connector(CN601) CKS3581 23 Antenna Jack(CN402) CKX1056 24 Panel CNB2343 25 Holder CNC5399 26 Holder CNC6845 27 Holder CNC7996 28 Heat Sink CNR1505 29 Holder Unit CXB2687 30 Chassis Unit CXB3012 31 IC(IC302) TDA7384 32 Remote Control Unit See Contrast table(2) 33 Cover See Contrast table(2) 34 Button CAC4836 35 Spring CBH1834 36 Spring CBH1835 37 Spring CBH2182 38 Bracket CNC6135 39 Bracket CNC6791 40 Arm CNV4692 41 Arm CNV4693 42 Arm CNV4728 43 Panel Unit CXB4927 44 Door CAT2109 45 Spring CBH1838 46 Screw IMS20P030FZK 47 Detach Grille Assy See Contrast table(2) 48 Screw BPZ20P100FZK 49 Button(DETACH) CAC5789 50 Button(1-6) CAC6239 51 Button(SOURCE) CAC6241 52 Button(+) CAC6242 53 Button(-) CAC6243 54 Button(AUDIO) CAC6245 55 Button(EQ) CAC6247 56 Button(EJECT) CAC6268 57 Button(BAND) CAC6269 58 Spring CBH2103 59 Cover CNS5635 60 Keyboard Unit See Contrast table(2) 61 LCD(LCD1901) CAW1563 62 Connector(CN1901) CKS3580 63 Holder CNC8485 64 Sheet CNM6453 65 Connector CNV5914 66 Lighting Conductor CNV5915 67 Grille Sub Assy See Contrast table(2) 68 Cassette Mechanism ModuleEXK4000 69 Screw ISS26P055FUC Mark No. Description Part No. Mark No. Description Part No. (1) EXTERIOR SECTION PARTS LIST (2) CONTRAST TABLE KEH-P490/X1M/UC, KEH-P4900/X1M/UC and KEH-P4950/X1M/ES are constructed same except for the following: Part No. Mark No. Description KEH-P490/X1M/UC KEH-P4900/X1M/UC KEH-P4950/X1M/ES 12 Tuner Amp Unit CWM7021 CWM7021 CWM7025 16 FM/AM Tuner Unit CWE1467 CWE1467 CWE1486 32 Remote Control Unit CXB4284 Not used Not used 33 Cover CNS4948 Not used Not used 47 Detach Grille Assy CXB5152 CXB4788 CXB4789 60 Keyboard Unit CWM7022 CWM7024 CWM7024 67 Grille Sub Assy CXB5209 CXB5210 CXB5211 www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 6 KEH-P490,P4900,P4950 2.3 CASSETTE MECHANISM MODULE www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 7 KEH-P490,P4900,P4950 1 Screw BSZ20P040FMC 2 Washer CBF1037 3 Washer CBG1003 4 Screw EBA1028 5 Screw EBA1037 6 Spring EBH1531 7 Spring EBH1624 8 Spring EBH1625 9 Spring EBH1626 10 Spring EBH1627 11 Spring EBH1628 12 Cord EDD1024 13 Photo-reflector(EGN1) EGN1004 14 Arm ENC1526 15 Lever ENC1530 16 Lever ENC1531 17 Arm ENC1532 18 Frame ENC1533 19 Holder ENC1534 20 Gear ENC1535 21 Arm ENC1536 22 Roller ENR1040 23 Belt ENT1027 24 Collar ENV1508 25 Arm ENV1539 26 Arm ENV1540 27 Gear ENV1544 28 Gear ENV1547 29 Gear ENV1548 30 Worm Wheel ENV1550 31 Lever ENV1551 32 Flywheel ENV1554 33 Gathering PCB ENX1054 34 Switch(S1,S2) ESG1007 35 Deck Unit EWM1023 36 Plug(CN251) CKS3540 37 Gathering PCB ENX1053 38 Motor Unit(M1) EXA1491 39 Motor EXM1028 40 Head Assy(HD1) EXA1506 41 Motor Unit(M2) EXA1580 42 Screw BMZ20P022FMC 43 Bracket ENC1528 44 Chassis Unit EXA1582 45 Pinch Holder Unit EXA1584 46 Pinch Roller ENV1518 47 Pinch Holder Unit EXA1583 48 Pinch Roller ENV1518 49 Reel Unit EXA1585 50 Head Base Unit EXA1586 51 Lever Unit EXA1587 52 Gear Unit EXA1588 53 Motor Unit(Service) EXX1055 54 Washer HBF-179 Mark No. Description Part No. Mark No. Description Part No. - CASSETTE MECHANISM MODULE SECTION PARTS LIST www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 8 KEH-P490,P4900,P4950 www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com KEH-P490,P4900,P4950 1 2 3 4 1 2 3 4 D C B A 3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM 3.1 BLOCK DIAGRAM IC2 PA4024A AMVCC Q3 Q201 Q202 AM RF/AGC FM RF 14 10 CF232 25 T31 Q31 CF51 AM IF B FM/AM TUNER UNIT 7 9 18 6 21 15 13 19 26 25 20 17 FM PROCESSOR IC1 PA4023B FM/AM PROCESSOR 23 9 FM MIX FM IF FM IF CF52 FM IF CF53 15 17 19 47 41 34 6 38 32 36 16 18 1 FM OSC AM OSC VCC FMVCC FMTV AMIFC VCO AMTV T51 2 FMSD SD FMSL AMSL 31 30 28 40 43 19 TUNER Lch IC501 PM2006A PLL Q909 Q910 Q907 Q908 VCC 29 25 9 4 5 37 38 AMTV FMTV FMTV AMTV AMIF FMVCO AMVCO X501 AM FM Q921 Q920 B.U VDD Q903 SYSPW SD SL SYSPW VDD AVDD 76 53 55 74 68 SL 29 30 FM AM SYSTEM CONTROLLER PE5086A IC601(1/2) PLLDATA TUN-L TUN-L ELECTRONIC VOLUME PML003AM IC301 11 10 2 5 6 3 BUS-L1 BUS-L2 TAPE-L RL FL Q310 Q309 MUTE MUTE POWER AMP TDA7384 IC302 11 15 MUTE STBY FL RL FL+ FL- RL+ RL- 22 4 9 7 19 17 SYSPW B.U B.U SYSPW Q307 Q904 Q911 Q306 Q905 Q901 Q902 MUTE 8V REGULATOR RESET IC602 S-80734AN VCC VDD 1 2 8 5 6 B.U TX TX RX RX ASENBO ASENBO IP-BUS DRIVER IC702 CA0008AM BUSL+ BUSL- BUS- BUS+ Q701 Q702 8 1 5 11 7 56 61 1 54 60 1 2 66 65 70 69 37 48 38 MUTE RESET BSENS ASENS SWVDD DPDT KYDT DSENS ASEMBO MCMUTE STBY MTL LOADSW X1 X2 SYSTEM CONTROLLER IC601(2/2) PE5086A X601 Q906 BSENS ASENS ACC FUSE 10A IC901 TPD1018F B REMOTE 5 1 6 B.U SYSPW B.U STBY B.U MUTE MTL LOAD 42 63 8 9 5 DSENS Q601 SWVDD VDD SW5V ILL1 KYDT DPDT SW5V VDD SWITCH 5 1 4 2 1 3 4 11 9 20 19 8 3 4 11 9 20 19 8 9 6 2 5 8 7 2 1 FM/AM ANTENNA A TUNER AMP UNIT D DECK UNIT C KEYBOARD UNIT 8 5 3 4 6 8 5 3 4 6 LCD DRIVER IC1901 PD6278C DPDT KYDT VDD LCDB XO XI REM REMOTE CONTROL SENSOR IC1902 RS-140 X1901 18 20 56 10 3 1 17 22 23 IC251 CXA2559Q IC351 PA2020A EQ AMP MECHANISM DRIVER CN251 CN252 CN254 CN255 CN253 7 5 TAPE+B Lch 17 18 FWD L-ch REV L-ch 37 36 39 18 19 17 3 1 5 6 8 7 10 CN256 3 1 5 6 S1 LOAD S2 MODE EGN1 REEL SENSE M M M2 SUB MOTOR M1 MAIN MOTOR 5 2 1 E REEL SENSE PCB CN602 CN701 IP-BUS CN402 CN301 CN603 CN601 CN1901 VCK/VDT/VST PDI/PCK/PDO/PCE ACC BACK UP FRONT-L SPEAKER REAR-L SPEAKER 14 VCC LOUT MCMUTE LDSW MTL STBY 1 9 6 2 5 8 7 1 B.REMOTE KEY MATRIX LCD 9 www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com FM/AM TUNER UNIT KEYBOARD UNIT DECK UNIT B C D 10 KEH-P490,P4900,P4950 1 2 3 4 1 2 3 4 D C B A 3.2 OVERALL CONNECTION DIAGRAM(GUIDE PAGE) Note: When ordering service parts, be sure to refer to “EXPLODED VIEWS AND PARTS LIST” or “ELECTRICAL PARTS LIST”. A-a A-b A-a A-b A-b A-a Large size SCH diagram Guide page Detailed page A A-a www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com CEK1136 TUNER AMP UNIT A 11 KEH-P490,P4900,P4950 5 6 7 8 5 6 7 8 D C B A A-b A www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com FM/AM TUNER UNIT B 12 KEH-P490,P4900,P4950 1 2 3 4 1 2 3 4 D C B A A-a A-a A-b 1 www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 13 KEH-P490,P4900,P4950 5 6 7 8 5 6 7 8 D C B A KEYBOARD UNIT DECK UNIT C D A-a A-a A-b 2 3 www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 14 1 2 3 4 1 2 3 4 D C B A A-a A-b A-b KEH-P490,P4900,P4950 CEK1136 TUNER AMP UNIT A 1 www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 15 KEH-P490,P4900,P4950 5 6 7 8 5 6 7 8 D C B A A-b A-a A-b 2 3 www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 3 1 2 FM/AM TUNER UN D1 D2 RD39JS RD39JS R1 R2 2R2M 2R2M D6 MA157 16 KEH-P490,P4900,P4950 1 2 3 4 1 2 3 4 D C B A B 3.3 FM/AM TUNER UNIT - CWE1467(KEH-P490/X1M/UC, KEH-P4900/X1M/UC) B www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 17 KEH-P490,P4900,P4950 5 6 7 8 5 6 7 8 D C B A B ER UNIT IFC A www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 18 KEH-P490,P4900,P4950 1 2 3 4 1 2 3 4 D C B A 3 1 2 FM/AM TUNER UN D1 D2 RD39JS RD39JS R1 R2 2R2M 2R2M D6 MA157 B - CWE1486(KEH-P4950/X1M/ES) B www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 19 KEH-P490,P4900,P4950 5 6 7 8 5 6 7 8 D C B A R UNIT IFC A B www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 20 KEH-P490,P4900,P4950 1 2 3 4 1 2 3 4 D C B A C 3.4 KEYBOARD UNIT www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com DISP CLOCK RPT PAUSE/BSM KEYBOARD UNIT CN601 C A 21 KEH-P490,P4900,P4950 5 6 7 8 5 6 7 8 D C B A C www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 22 KEH-P490,P4900,P4950 1 2 3 4 1 2 3 4 D C B A 3.5 CASSETTE MECHANISM MODULE DECK UNIT MUTE CXA2559Q 11 12 13 14 15 16 17 18 19 20 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 1 2 3 4 5 6 7 8 9 10 R256 220 R287 0R0 C273 22/16 R283 0R0 R284 0R0 R282 0R0 C253 330P C254 330P C252 330P C251 330P R281 0R0 R255 220 C256 R01 R258 1K R301 18K R273 1K R274 1K R271 1K R272 1K R290 C403 R403 C402 3900P C401 R33 R323 0R0 R257 1K C255 R01 C272 R1 C313 100P R286 0R0 R285 0R0 HD1 HEAD ASSY EXA1506 TEST TAPE NCT-150 (400Hz, 200nWb/m) RL RR FR FL C302 R1 C301 R1 R304 R302 16K 16K R305 16K R303 16K -6dBs(388mV)±1dB Fwd-R Fwd-L Rev-R Rev-L PBFB2 PBRIN2 PBGND PBFIN2 VCT PBREF PBFIN1 PBGND PBRIN1 PBFB1 PBTC1 PBOUT1 OUTREF1 TAPEIN1 VCC LINEOUT1 TCH1 MSLPF MSMODE DRSW TAPESW MUTESW MSOUT MSTC G1FB G2FB PBTC2 PBOUT2 OUTREF2 TAPEIN2 GND DIREF LINEOUT2 TCH2 MSSW CN252 CN251 EQ AMP IC251 D D CN602 A www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 23 KEH-P490,P4900,P4950 5 6 7 8 5 6 7 8 D C B A E D REEL SENSE PCB SWITCHES: PCB UNIT S1:LOAD SWITCH..........EJECT-PLAY S2:MODE SWITCH............ON-OFF The underlined indicates the switch position. R290 0R0 C403 R068 R403 82K C402 3900P C401 R33 R402 18K R401 4R7K R351 1K R352 1K R353 1K R354 1K R373 0R0 R355 270K C352 3900P R362 300 C351 R22 C353 R01 C354 R01 R374 0R0 C356 R01 C355 R1 D352 1SS355 M1 MOTOR UNIT (MAIN MOTOR) EXA1491 S1 LOAD ESG1007 S2 ESG1007 MODE REEL SENSE EGN1 EGN1004 M2 MOTOR UNIT (SUB MOTOR) EXA1580 RS3 RS2 RS1 SC2 SC1 TAB MC CE VCC2 NC VCC MCS RRS FRS RSB C TAB MS2 NC NC MM SM1 RSB GND RS mtl MCS load CN255 CN253 CN256 CN254 MECHANISM DRIVER IC351 PA2020A E www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 24 KEH-P490,P4900,P4950 1 2 3 4 1 2 3 4 D C B A 4. PCB CONNECTION DIAGRAM 4.1 TUNER AMP UNIT NOTE FOR PCB DIAGRAMS 1. The parts mounted on this PCB include all necessary parts for several destination. For further information for respective destinations, be sure to check with the schematic dia- gram. 2. Viewpoint of PCB diagrams A Capacitor Connector P.C.Board Chip Part SIDE A SIDE B TUNER AMP UNIT CN1901 CORD ASSY C A www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 25 KEH-P490,P4900,P4950 5 6 7 8 5 6 7 8 D C B A A SIDE A CN251 D B ANTENNA IP-BUS www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 26 KEH-P490,P4900,P4950 1 2 3 4 1 2 3 4 D C B A A TUNER AMP UNIT A www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 27 KEH-P490,P4900,P4950 5 6 7 8 5 6 7 8 D C B A A SIDE B www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 28 KEH-P490,P4900,P4950 1 2 3 4 1 2 3 4 D C B A 4.2 FM/AM TUNER UNIT B SIDE A FM/AM TUNER UNIT A B www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 29 KEH-P490,P4900,P4950 1 2 3 4 1 2 3 4 D C B A B SIDE B FM/AM TUNER UNIT B www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 30 KEH-P490,P4900,P4950 1 2 3 4 1 2 3 4 D C B A 4.3 KEYBOARD UNIT EQ+ EQ- VOL+ VOL- SOURCE 1 2 3 4 5 6 CLOCK RPT DISP AUDIO BAND PAUSE/BSM EJECT KEYBOARD UNIT KEYBOARD UNIT SIDE A SIDE B CN601 C A C C www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 31 KEH-P490,P4900,P4950 1 2 3 4 1 2 3 4 D C B A D SIDE A 4.4 CASSETTE MECHANISM MODULE CN602 A IC,Q IC251 Q351 Q352 ADJ VR302 VR301 IC253 CN252 CN254 CN253 CN255 M1 M2 HEAD ASSY CN256 21 22 E DECK UNIT D DECK UNIT D SIDE B www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 32 KEH-P490,P4900,P4950 1 2 3 4 1 2 3 4 D C B A E 1 2 3 4 5 6 S3 70µs SW S1 LOAD SW S2 MODE SW CN256 EGN1 REEL SENSE D CN253 REEL SENSE PCB E www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 33 KEH-P490,P4900,P4950 5. ELECTRICAL PARTS LIST NOTES: - Parts whose parts numbers are omitted are subject to being not supplied. - The part numbers shown below indicate chip components. Chip Resistor RS1/_S___J,RS1/__S___J Chip Capacitor (except for CQS.....) CKS....., CCS....., CSZS..... =====Circuit Symbol and No.===Part Name Part No. --- ------ ------------------------------------------ ------------------------- Unit Number : CWM7021(KEH-P490/X1M/UC) (KEH-P4900/X1M/UC) Unit Number : CWM7025(KEH-P4950/X1M/ES) Unit Name : Tuner Amp Unit MISCELLANEOUS IC 301 IC PML003AM IC 302 IC TDA7384 IC 501 IC PM2006A IC 601 IC PE5086A IC 602 IC S-80734AN IC 702 IC CA0008AM IC 901 IC TPD1018F Q 306 Transistor DTC124EK Q 307 Transistor 2SC1740S Q 308 Transistor DTC143TK Q 309 Transistor DTC143TK Q 310 Transistor DTA124EK Q 401 Transistor 2SC2412K Q 505 Transistor DTA124EK Q 506 Transistor DTC114EK Q 601 Transistor 2SA933S Q 701 Transistor 2SA1037K Q 702 Transistor DTC114EK Q 901 Transistor 2SC1740S Q 902 Transistor 2SC2412K Q 903 Transistor 2SD2037 Q 904 Transistor 2SD2396 Q 905 Transistor 2SB1238 Q 906 Transistor 2SC1740S Q 907 Transistor 2SA1048 Q 908 Transistor DTC114TK Q 909 Transistor 2SA1048 Q 910 Transistor DTC114TK Q 911 Transistor 2SC2412K Q 920 Transistor DTC114ES Q 921 Transistor DTA124ES D 301 Diode 1SS270 D 302 Diode 1SS270 D 401 Diode 1SS270 D 402 Diode 1SS270 D 601 Diode 1SS270 D 602 Diode 1SS270 D 603 Diode 1SS270 D 604 Diode 1SS270 D 605 Diode 1SS270 D 606 Diode 1SS270 D 607 Diode 1SS270 D 608 Diode 1SS270 D 901 Diode HZS7L(C2) D 902 Diode 1SR139-400 D 903 Diode 1SR139-400 D 904 Diode HZS7L(A1) D 905 Diode 1SR139-400 D 906 Diode HZS6L(B2) D 907 Diode HZS9L(B3) D 908 Diode HZS9L(A2) D 909 Diode 1SR139-400 D 910 Diode 1SR139-400 L 401 Inductor See Contrast table L 501 Ferri-Inductor LAU2R2K L 502 Ferri-Inductor LAU2R2K L 601 Ferri-Inductor LAU2R2K L 602 Ferri-Inductor LAU2R2K L 603 Ferri-Inductor LAU2R2K L 702 Ferri-Inductor LAU2R2K L 901 Choke Coil 600µH CTH1168 X 501 Crystal Resonator 7.2MHz CSS1474 X 601 Ceramic Resonator 4.194MHz CSS1047 FM/AM Tunew Unit See Contrast table RESISTORS R 301 RS1/10S0R0J R 302 RS1/10S0R0J R 310 RS1/10S103J R 317 RS1/10S152J R 318 RS1/10S103J R 319 RS1/10S221J R 320 RS1/10S101J R 321 RS1/10S223J R 322 RS1/10S153J R 323 RS1/10S103J R 325 RS1/10S821J R 326 RS1/10S821J R 327 RS1/10S223J R 328 RS1/10S223J R 333 RS1/10S101J R 334 RS1/10S101J R 335 RS1/10S223J R 336 RS1/10S223J R 337 RD1/4PU102J R 338 RD1/4PU102J R 342 RS1/10S0R0J R 401 See Contrast table R 402 RS1/10S162J R 403 RS1/10S162J R 404 RS1/10S0R0J R 405 See Contrast table R 406 RS1/10S102J R 407 RD1/4PU222J R 408 RS1/10S222J R 410 RS1/10S102J R 412 RD1/4PU103J R 413 RS1/10S393J R 417 RS1/10S0R0J R 418 RS1/10S0R0J R 419 RS1/10S0R0J R 502 RS1/10S102J R 503 RS1/10S222J R 506 RS1/10S182J R 511 RS1/10S0R0J R 512 See Contrast table =====Circuit Symbol and No.===Part Name Part No. --- ------ ------------------------------------------ ------------------------- A www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 34 KEH-P490,P4900,P4950 R 513 RS1/10S102J R 514 RS1/8S0R0J R 515 RS1/10S562J R 517 RS1/10S473J R 518 RS1/10S152J R 519 RS1/10S472J R 520 RS1/10S472J R 521 RS1/10S472J R 523 RS1/10S0R0J R 524 RS1/10S103J R 525 RS1/10S152J R 526 RS1/10S392J R 527 RS1/10S392J R 528 RS1/10S472J R 529 RS1/10S473J R 531 RS1/10S104J R 532 RS1/10S473J R 535 RS1/10S102J R 601 RS1/10S124J R 604 RS1/10S473J R 607 RD1/4PU102J R 610 RS1/10S473J R 611 RS1/10S473J R 612 RS1/10S473J R 613 RS1/10S473J R 614 RS1/8S103J R 615 RS1/10S392J R 616 RD1/4PU222J R 617 RD1/4PU223J R 618 RD1/4PU222J R 619 RD1/4PU222J R 621 RS1/10S222J R 622 RS1/10S222J R 623 RD1/4PU222J R 624 RS1/10S222J R 625 RD1/4PU222J R 626 RD1/4PU222J R 627 RD1/4PU222J R 628 RD1/4PU222J R 629 RD1/4PU681J R 630 RS1/10S681J R 633 RD1/4PU681J R 634 RD1/4PU681J R 635 RD1/4PU222J R 636 RS1/10S472J R 637 RS1/10S103J R 638 RD1/4PU222J R 639 RS1/10S223J R 641 RD1/4PU222J R 642 RS1/10S473J R 643 RS1/10S472J R 644 RS1/10S472J R 645 RS1/10S472J R 646 RS1/10S103J R 647 RS1/10S103J R 648 See Contrast table R 649 RS1/10S103J R 651 RD1/4PU222J R 653 RS1/8S0R0J R 654 RS1/10S0R0J R 655 RS1/10S473J R 716 RS1/10S620J R 717 RS1/10S101J R 718 RS1/10S101J R 719 RS1/10S473J R 720 RS1/10S473J R 721 RS1/10S102J R 722 RS1/10S102J R 723 RS1/10S102J R 724 RS1/10S223J R 725 RD1/4PU472J R 726 RS1/10S222J R 901 RS1/10S473J R 902 RS1/10S223J R 903 RS1/10S223J R 904 RS1/10S473J R 905 RD1/4PU102J R 906 RD1/4PU473J R 907 RS1/10S473J R 908 RS1/10S472J R 909 RS1/10S332J R 910 RD1/4PU101J R 911 RS1/10S102J R 912 RS1/10S103J R 913 RS1/10S103J R 914 RS1/10S222J R 915 RS1/8S103J R 916 RS1/10S103J R 917 RS1/10S0R0J R 919 RS1/10S102J R 920 RS1/10S103J R 921 RS1/10S152J R 922 RS1/10S102J R 923 RS1/10S103J R 924 RS1/10S223J R 932 RS1/10S473J R 944 RS1/10S152J R 949 RS1/8S1R0J R 955 RD1/4PU473J CAPACITORS C 303 CEJA470M10 C 304 CEJA100M16 C 308 CKSQYB104K50 C 309 CKSQYB224K16 C 310 CKSQYB224K16 C 311 CKSQYB224K16 C 312 CKSQYB224K16 C 313 CEJA4R7M35 C 314 CEJA4R7M35 C 315 CEJA330M10 C 316 CEJA1R0M50 C 317 CEJA100M16 C 318 CKSYB225K16 C 319 CKSQYB474K16 C 320 CKSQYB474K16 C 321 CKSQYB474K16 C 322 CKSQYB474K16 C 323 CKSQYB104K50 C 324 3300µF/16V CCH1169 C 325 CEJA2R2M50 C 326 CEJA2R2M50 C 327 CEJA1R0M50 C 328 CEJA1R0M50 C 329 CEJA1R0M50 C 330 CEJA1R0M50 C 331 CKSQYB153K50 C 332 CKSQYB153K50 C 391 CKSQYB225K10 C 392 CKSYB474K16 C 393 CKSYB474K16 C 394 CKSYB474K16 C 395 CKSYB474K16 C 401 CKSQYB473K50 C 402 CKSQYB473K50 C 403 CKSQYB223K25 =====Circuit Symbol and No.===Part Name Part No. --- ------ ------------------------------------------ ------------------------- =====Circuit Symbol and No.===Part Name Part No. --- ------ ------------------------------------------ ------------------------- www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 35 KEH-P490,P4900,P4950 C 407 CKSQYB223K50 C 408 CCSQSL101J50 C 411 CCSQSL101J50 C 413 CKSQYB223K50 C 414 CKSQYB103K50 C 504 CKSQYB103K50 C 505 CKSQYB103K50 C 506 See Contrast table C 507 CEJA220M6R3 C 508 CKSQYB102K50 C 510 CCSQSL101J50 C 511 CKSQYB103K50 C 512 CKSQYB103K50 C 513 CKSQYB103K50 C 514 CCSQCH150J50 C 515 CKSQYB102K50 C 516 CCSQCH150J50 C 518 CKSQYB103K50 C 519 CEJA220M6R3 C 520 CKSQYB103K50 C 521 CEJA220M6R3 C 522 CKSQYB103K50 C 524 CKSQYB103K50 C 525 4.7µF/16V CCH1250 C 527 CKLSR473K16 C 528 CKSQYB154K16 C 530 CEJA220M10 C 601 CKSQYB473K50 C 602 CEJA2R2M50 C 603 CKSQYB103K50 C 604 CCSQCH101J50 C 608 CEJA4R7M35 C 609 CEJA100M16 C 610 CEJA220M10 C 611 CKSQYB223K50 C 715 CKSQYB102K50 C 716 CKSQYB104K50 C 901 CEJA101M10 C 902 CKSQYB473K50 C 903 470µF/16V CCH1183 C 904 CKSQYB103K50 C 905 330µF/10V CCH1181 C 906 CKSQYB103K50 C 907 100µF/16V CCH1179 C 908 CKSQYB103K50 C 910 CKSQYB473K50 =====Circuit Symbol and No.===Part Name Part No. --- ------ ------------------------------------------ ------------------------- =====Circuit Symbol and No.===Part Name Part No. --- ------ ------------------------------------------ ------------------------- CONTRAST TABLE of TUNER AMP UNIT KEH-P490/X1M/UC, KEH-P4900/X1M/UC and KEH-P4950/X1M/ES are constructed same except for the following: Part No. KEH-P490/X1M/UC KEH-P4950/X1M/ES Symbol and Description KEH-P4900/X1M/UC FM/AM Tuner Unit CWE1467 CWE1486 L401 Inductor LCTBR39K2125 Not used R401 Not used RS1/10S182J R405 Not used RS1/10S510J R512 RS1/10S0R0J Not used R648 Not used RS1/10S183J C506 Not used CKSQYB103K50 =====Circuit Symbol and No.===Part Name Part No. --- ------ ------------------------------------------ ------------------------- =====Circuit Symbol and No.===Part Name Part No. --- ------ ------------------------------------------ ------------------------- Unit Number : CWE1467(KEH-P490/X1M/UC) (KEH-P4900/X1M/UC) Unit Name : FM/AM Tuner Unit MISCELLANEOUS IC 1 IC PA4023B IC 2 IC PA4024A Q 1 Transistor 2SC2412K Q 2 Transistor DTC124EU Q 3 FET 3SK263 Q 31 Transistor 2SC2412K Q 201 FET 2SK932 Q 202 Transistor 2SC2412K Q 203 Transistor DTC124EU D 1 Diode RD39JS D 2 Diode RD39JS D 4 Diode 1SV250 D 5 Diode KV1410-F1 D 6 Diode MA157 D 7 Diode KV1410-F1 D 8 Diode KV1410-F1 D 201 Diode MA157 D 202 Diode MA157 D 231 Diode SVC253 L 2 Coil CTC1133 L 3 Inductor LCTB2R2K2125 L 4 Coil CTC1133 L 5 Coil CTC1132 L 51 Ferri-Inductor LAU150K L 201 Ferri-Inductor LAU4R7K L 202 Ferri-Inductor LAU330K L 203 Inductor CTF1287 L 208 Inductor LAU121K L 231 Inductor LCTA3R3J3225 T 31 Coil CTE1117 T 51 Coil CTC1159 CF 51 Ceramic Filter CTF1441 CF 52 Ceramic Filter CTF1441 CF 53 Ceramic Filter CTF1441 CF 232 Ceramic Filter CTF1348 B www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 36 KEH-P490,P4900,P4950 X 151 Radiator 918.5Hz CSS1365 X 231 Crystal Resonator 10.26MHz CSS1111 VR 154 Semi-fixed 150kΩ(B) CCP1213 RESISTORS R 1 RS1/16S225J R 2 RS1/16S225J R 4 RS1/16S154J R 5 RS1/16S391J R 6 RS1/16S223J R 7 RS1/16S123J R 8 RS1/16S332J R 9 RS1/16S473J R 10 RS1/16S223J R 11 RS1/16S124J R 13 RS1/16S563J R 15 RS1/16S271J R 16 RS1/16S104J R 17 RS1/16S332J R 18 RS1/16S332J R 31 RS1/16S470J R 32 RS1/16S822J R 33 RS1/16S822J R 34 RS1/16S331J R 35 RS1/16S331J R 40 RS1/16S470J R 51 RS1/16S271J R 52 RS1/16S560J R 55 RS1/16S102J R 56 RS1/16S823J R 61 RS1/16S392J R 62 RS1/16S273J R 101 RS1/16S272J R 102 RS1/16S682J R 103 RS1/16S333J R 104 RS1/16S334J R 105 RS1/16S683J R 107 RS1/16S222J R 151 RS1/16S222J R 152 RS1/16S393J R 155 RS1/16S273J R 156 RS1/16S243J R 157 RS1/16S203J R 160 RS1/16S222J R 161 RS1/16S563J R 162 RS1/16S105J R 163 RS1/16S223J R 202 RS1/16S223J R 203 RS1/16S225J R 204 RS1/16S103J R 206 RS1/16S220J R 207 RS1/16S101J R 208 RS1/16S102J R 209 RS1/16S471J R 214 RS1/16S822J R 215 RS1/16S822J R 217 RS1/16S102J R 231 RS1/16S272J R 232 RS1/16S473J R 237 RS1/16S103J R 238 RS1/16S104J R 239 RS1/16S104J R 240 RS1/16S332J R 241 RS1/16S202J R 243 RS1/16S183J R 244 RS1/16S392J R 247 RS1/16S123J CAPACITORS C 1 CCSQCH6R0D50 C 2 CCSRCK2R0C50 C 4 CCSRCH820J50 C 6 CCSRCH820J50 C 8 CKSRYB103K25 C 9 CKSQYB104K16 C 10 CCSRCKR50C50 C 11 CEJA1R0M50 C 12 CKSRYB222K50 C 13 CKSRYB222K50 C 14 CCSRCH220J50 C 15 CCSRCH6R0D50 C 16 CCSRCH8R0D50 C 17 CKSRYB222K50 C 18 CKSRYB103K25 C 19 CKSRYB222K50 C 20 CKSRYB222K50 C 21 CEJA100M16 C 22 CCSRTH9R0D50 C 23 CCSRTH120J50 C 24 CCSRCH471J50 C 25 CKSRYB103K25 C 26 CCSRCH101J50 C 31 CKSRYB103K25 C 32 CKSQYB472K50 C 33 CCSRCH5R0C50 C 34 CKSQYB104K16 C 36 CCSRRH201J50 C 51 CKSRYB223K25 C 52 CKSRYB103K25 C 54 CCSRCH470J50 C 55 CKSQYB223K25 C 56 CKSQYB104K16 C 57 CKSRYB472K50 C 58 CEJA330M10 C 59 CKSRYB103K25 C 60 CKSRYB102K50 C 61 CCSRCH270J50 C 62 CKSRYB103K25 C 63 CEJAR22M50 C 101 CEJANP100M10 C 102 CKSRYB182K50 C 103 CKSRYB682K25 C 104 CEJA2R2M50 C 105 CKSRYB103K25 C 106 CCSRCH151J50 C 107 CKSRYB103K25 C 151 CKSRYB472K50 C 152 CKSQYB104K16 C 153 CEJA3R3M50 C 154 CKSQYB104K16 C 157 CEJA3R3M50 C 158 CKSYB474K16 C 159 CEJA220M6R3 C 160 CKSQYB104K16 C 161 CKSQYB104K16 C 162 CEJA3R3M50 C 163 CKSRYB102K50 C 170 CCSRCH100D50 C 201 CCSRCH471J50 C 202 CCSRCH100D50 C 203 CKSRYB332K50 C 204 CKSQYB473K16 C 205 CKSQYB473K16 C 206 CKSQYB104K16 =====Circuit Symbol and No.===Part Name Part No. --- ------ ------------------------------------------ ------------------------- =====Circuit Symbol and No.===Part Name Part No. --- ------ ------------------------------------------ ------------------------- www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 37 KEH-P490,P4900,P4950 C 207 CCSRCH560J50 C 209 CKSQYB104K16 C 211 CCSRCH101J50 C 212 CEJA470M6R3 C 213 CKSRYB103K25 C 216 CCSRCH101J50 C 217 CEJA1R5M50 C 219 CCSRCH471J50 C 220 CKSRYB103K25 C 230 CKSRYB103K25 C 231 CCSRCH330J50 C 232 CCSRCH150J50 C 233 CKSQYB104K16 C 234 CEJA330M10 C 235 CKSRYB332K50 C 236 CKSQYB473K16 C 237 CCSRCH120J50 C 239 CKSRYB472K50 C 240 CEJAR47M50 C 241 CKSQYB104K16 C 242 CEJAR47M50 C 243 CEJAR33M50 C 244 CKSQYB473K16 C 245 CKSRYB333K16 C 246 CKSQYB473K16 C 250 CCSRCH471J50 Unit Number : CWE1486(KEH-P4950/X1M/ES) Unit Name : FM/AM Tuner Unit MISCELLANEOUS IC 1 IC PA4023B IC 2 IC PA4024A Q 1 Transistor 2SC2412K Q 2 Transistor DTC124EU Q 3 FET 3SK263 Q 31 Transistor 2SC2412K Q 201 FET 2SK932 Q 202 Transistor 2SC2412K Q 203 Transistor DTC124EU D 1 Diode RD39JS D 2 Diode RD39JS D 4 Diode 1SV250 D 5 Diode KV1410-F1 D 6 Diode MA157 D 7 Diode KV1410-F1 D 8 Diode KV1410-F1 D 201 Diode MA157 D 202 Diode MA157 D 231 Diode SVC253 L 2 Coil CTC1133 L 3 Inductor LCTB2R2K2125 L 4 Coil CTC1133 L 5 Coil CTC1132 L 6 Inductor LCTBR15K1608 L 51 Ferri-Inductor LAU150K L 201 Ferri-Inductor LAU4R7K L 202 Ferri-Inductor LAU330K L 203 Inductor CTF1287 L 208 Inductor LAU121K L 231 Inductor LCTA3R3J3225 T 31 Coil CTE1117 T 51 Coil CTC1159 CF 51 Ceramic Filter CTF1441 CF 52 Ceramic Filter CTF1441 CF 53 Ceramic Filter CTF1441 CF 232 Ceramic Filter CTF1348 X 151 Radiator 918.5Hz CSS1365 X 231 Crystal Resonator 10.26MHz CSS1111 VR 154 Semi-fixed 150kΩ(B) CCP1213 RESISTORS R 1 RS1/16S225J R 2 RS1/16S225J R 4 RS1/16S154J R 5 RS1/16S391J R 6 RS1/16S223J R 7 RS1/16S123J R 8 RS1/16S332J R 9 RS1/16S473J R 10 RS1/16S223J R 11 RS1/16S124J R 13 RS1/16S563J R 15 RS1/16S271J R 16 RS1/16S104J R 17 RS1/16S332J R 18 RS1/16S332J R 31 RS1/16S470J R 32 RS1/16S822J R 33 RS1/16S822J R 34 RS1/16S331J R 35 RS1/16S331J R 40 RS1/16S470J R 51 RS1/16S271J R 52 RS1/16S560J R 55 RS1/16S102J R 56 RS1/16S823J R 61 RS1/16S392J R 62 RS1/16S273J R 101 RS1/16S272J R 102 RS1/16S682J R 103 RS1/16S333J R 104 RS1/16S334J R 105 RS1/16S683J R 107 RS1/16S222J R 151 RS1/16S222J R 152 RS1/16S393J R 155 RS1/16S273J R 156 RS1/16S243J R 157 RS1/16S203J R 160 RS1/16S222J R 161 RS1/16S563J R 162 RS1/16S105J R 163 RS1/16S223J R 202 RS1/16S223J R 203 RS1/16S225J R 204 RS1/16S103J R 206 RS1/16S220J R 207 RS1/16S101J R 208 RS1/16S102J R 209 RS1/16S471J R 214 RS1/16S822J R 215 RS1/16S822J R 217 RS1/16S102J R 231 RS1/16S272J R 232 RS1/16S473J R 237 RS1/16S103J R 238 RS1/16S104J R 239 RS1/16S104J R 240 RS1/16S332J R 241 RS1/16S202J R 243 RS1/16S183J R 244 RS1/16S392J R 247 RS1/16S123J =====Circuit Symbol and No.===Part Name Part No. --- ------ ------------------------------------------ ------------------------- =====Circuit Symbol and No.===Part Name Part No. --- ------ ------------------------------------------ ------------------------- B www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 38 KEH-P490,P4900,P4950 CAPACITORS C 1 CCSQCH6R0D50 C 2 CCSRCK2R0C50 C 4 CCSRCH820J50 C 6 CCSRCH820J50 C 8 CKSRYB103K25 C 9 CKSQYB104K16 C 10 CCSRCKR50C50 C 11 CEJA1R0M50 C 12 CKSRYB222K50 C 13 CKSRYB222K50 C 14 CCSRCH220J50 C 15 CCSRCH6R0D50 C 16 CCSRCH8R0D50 C 17 CKSRYB222K50 C 18 CKSRYB103K25 C 19 CKSRYB222K50 C 20 CKSRYB222K50 C 21 CEJA100M16 C 22 CCSRTH9R0D50 C 23 CCSRTH120J50 C 24 CCSRCH471J50 C 25 CKSRYB103K25 C 31 CKSRYB103K25 C 32 CKSQYB472K50 C 33 CCSRCH5R0C50 C 34 CKSQYB104K16 C 36 CCSRRH201J50 C 51 CKSRYB223K25 C 52 CKSRYB103K25 C 54 CCSRCH470J50 C 55 CKSQYB223K25 C 56 CKSQYB104K16 C 57 CKSRYB472K50 C 58 CEJA330M10 C 59 CKSRYB103K25 C 60 CKSRYB102K50 C 61 CCSRCH270J50 C 62 CKSRYB103K25 C 63 CEJAR22M50 C 101 CEJANP100M10 C 102 CKSRYB182K50 C 103 CKSRYB682K25 C 104 CEJA2R2M50 C 105 CKSRYB103K25 C 106 CCSRCH151J50 C 107 CKSRYB103K25 C 151 CKSRYB472K50 C 152 CKSQYB104K16 C 153 CEJA3R3M50 C 154 CKSQYB104K16 C 157 CEJA3R3M50 C 158 CKSYB474K16 C 159 CEJA220M6R3 C 160 CKSQYB104K16 C 161 CKSQYB104K16 C 162 CEJA3R3M50 C 163 CKSRYB102K50 C 170 CCSRCH100D50 C 201 CCSRCH471J50 C 202 CCSRCH100D50 C 203 CKSRYB332K50 C 204 CKSQYB473K16 C 205 CKSQYB473K16 C 206 CKSQYB104K16 C 207 CCSRCH560J50 C 209 CKSQYB104K16 C 211 CCSRCH101J50 C 212 CEJA470M6R3 C 213 CKSRYB103K25 C 216 CCSRCH101J50 C 217 CEJA1R5M50 C 219 CCSRCH471J50 C 220 CKSRYB103K25 C 230 CKSRYB103K25 C 231 CCSRCH330J50 C 232 CCSRCH150J50 C 233 CKSQYB104K16 C 234 CEJA330M10 C 235 CKSRYB332K50 C 236 CKSQYB473K16 C 237 CCSRCH120J50 C 239 CKSRYB472K50 C 240 CEJAR47M50 C 241 CKSQYB104K16 C 242 CEJAR47M50 C 243 CEJAR33M50 C 244 CKSQYB473K16 C 245 CKSRYB333K16 C 246 CKSQYB473K16 C 250 CCSRCH471J50 Unit Number : CWM7022(KEH-P490/X1M/UC) Unit Number : CWM7024(KEH-P4900/X1M/UC) (KEH-P4950/X1M/ES) Unit Name : Keyboard Unit MISCELLANEOUS IC 1901 IC PD6278C IC 1902 HIC Module(KEH-P490/X1M/UC) RS-140 D 1901 Chip Diode MA151WK D 1902 Chip Diode MA151WA X 1901 Ceramic Resonator 4.97MHz CSS1422 S 1901 Switch CSG1041 S 1902 Push Switch CSG1111 S 1903 Push Switch CSG1111 S 1904 Push Switch CSG1111 S 1905 Push Switch CSG1111 S 1906 Push Switch CSG1111 S 1907 Push Switch CSG1111 S 1908 Push Switch CSG1111 S 1909 Push Switch CSG1111 S 1910 Push Switch CSG1111 S 1911 Push Switch CSG1111 S 1912 Push Switch CSG1111 S 1913 Push Switch CSG1111 S 1914 Switch CSG1110 S 1915 Push Switch CSG1111 S 1916 Push Switch CSG1111 S 1917 Push Switch CSG1111 S 1918 Switch CSG1110 S 1919 Push Switch CSG1111 S 1920 Switch CSG1110 S 1921 Switch CSG1041 S 1922 Push Switch CSG1111 IL 1901 Lamp 14V 40mA CEL1549 IL 1902 Lamp 14V 40mA CEL1549 IL 1903 Lamp 14V 40mA CEL1549 IL 1904 Lamp 14V 40mA CEL1549 IL 1905 Lamp 14V 40mA CEL1549 LCD1901 LCD CAW1563 =====Circuit Symbol and No.===Part Name Part No. --- ------ ------------------------------------------ ------------------------- =====Circuit Symbol and No.===Part Name Part No. --- ------ ------------------------------------------ ------------------------- C www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 39 KEH-P490,P4900,P4950 RESISTORS R 1901 RS1/10S222J R 1902 RS1/10S222J R 1903 RS1/10S472J R 1904 RS1/10S473J R 1905 RS1/10S473J R 1906 RS1/10S473J R 1907 RS1/10S473J R 1908 RS1/10S473J R 1909 RS1/10S473J R 1910 (KEH-P4900/X1M/UC) RS1/10S473J (KEH-P4950/X1M/ES) RS1/10S473J R 1911 (KEH-P490/X1M/UC) RS1/10S121J R 1912 (KEH-P490/X1M/UC) RS1/10S2R2J CAPACITORS C 1902 CKSQYB104K16 C 1903 (KEH-P490/X1M/UC) CEAL100M16 Unit Number : EWM1023 Unit Name : Deck Unit MISCELLANEOUS IC 251 IC CXA2559Q IC 351 IC PA2020A D 352 Diode 1SS355 RESISTORS R 255 RS1/16S221J R 256 RS1/16S221J R 257 RS1/16S102J R 258 RS1/16S102J R 271 RS1/16S102J R 272 RS1/16S102J R 273 RS1/16S102J R 274 RS1/16S102J R 281 RS1/8S0R0J R 282 RS1/8S0R0J R 283 RS1/8S0R0J R 284 RS1/8S0R0J R 285 RS1/16S0R0J R 286 RS1/16S0R0J R 287 RS1/8S0R0J R 290 RS1/8S0R0J R 301 RS1/16S183J R 302 RS1/16S163J R 303 RS1/16S163J R 304 RS1/16S163J R 305 RS1/16S163J R 323 RS1/8S0R0J R 351 RS1/16S102J R 352 RS1/16S102J R 353 RS1/16S102J R 354 RS1/16S102J R 355 RS1/10S274J R 362 RS1/8S301J R 373 RS1/8S0R0J R 374 RS1/8S0R0J R 401 RS1/16S472J R 402 RS1/16S183J R 403 RS1/16S823J CAPACITORS C 251 CKSRYB331K50 C 252 CKSRYB331K50 C 253 CKSRYB331K50 C 254 CKSRYB331K50 C 255 CKSRYB103K50 C 256 CKSRYB103K50 C 272 CKSRYB104K16 C 273 CEJA220M16 C 301 CKSRYB104K16 C 302 CKSRYB104K16 C 313 CCSRCH101J50 C 351 CKSYB224K25 C 352 CKSRYB392K50 C 353 CKSRYB103K50 C 354 CKSRYB103K50 C 355 CKSYB104K50 C 356 CKSRYB103K50 C 401 CKSQYB334K16 C 402 CKSRYB392K50 C 403 CKSRYB683K16 Unit Number : Unit Name : Reel Sense PCB S 1 Switch(LOAD) ESG1007 S 2 Switch(MODE) ESG1007 EGN 1 Photo-reflector EGN1004 Miscellaneous Parts List M 1 Motor Unit(MAIN) EXA1491 M 2 Motor Unit(SUB) EXA1580 HD 1 Head Assy EXA1506 Fuse(10A) CEK1136 =====Circuit Symbol and No.===Part Name Part No. --- ------ ------------------------------------------ ------------------------- D E =====Circuit Symbol and No.===Part Name Part No. --- ------ ------------------------------------------ ------------------------- www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 40 KEH-P490,P4900,P4950 6. ADJUSTMENT - Connection Diagram FM/AM TUNER UNIT 4Ω 4Ω Lch + Lch - Rch + Rch - BACK UP ACC GND +14.4V GND Main Antenna Jack mV Meter (1) Oscilloscope DC Regulated Power Supply TUNER AMP UNIT 50 Ω(75Ω ) FM SSG Stereo Modulator 50Ω (37.5Ω ) Antenna Plug Dummy Antenna DECK UNIT FM/AM TUNER UNIT (TOP VIEW) T31 T51 C63 T51 Center Meter FM/AM TUNER UNIT (BOTTOM VIEW) Pin1 Pin13 Pin14 Pin 19 Pin26 L2 L4 L5 VR154 TC1 DC V Meter(1) www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 41 KEH-P490,P4900,P4950 FM ADJUSTMENT (UC MODEL) Modulation M:MONO MOD., 400Hz 30%(22.5kHz Dev.) or 400Hz 100%(75kHz Dev.) S:STEREO MOD., 1kHz, L or R=30%(20.25kHz+7.5kHz Dev.) NOTE:Before proceeding to further adjustments after switching power ON, let the tuner run for ten minutes to allow the circuits to stabilize. FM SSG Displayed Adjustment Adjustment Method No. Frequency(MHz) Level(dBf) Frequency(MHz) Point (Switch Position) TUN Volt 1 ••••• ••••• 107.9 L5 DC V Meter(1) : 6V IF 2 98.1 M 60—100 98.1 T51 Center Meter : 0 ANT Coil 3 98.1 M 5 98.1 L2 mV Meter(1) : Maximum RF Coil 4 98.1 M 5 98.1 L4 mV Meter(1) : Maximum IFT 5 98.1 M 5 98.1 T31 mV Meter(1) : Maximum (STEREO MODE) ARC 6 98.1 S 40 98.1 VR154 mV Meter(1) : Separation 5dB (STEREO MODE) FM ADJUSTMENT (ES MODEL) Modulation M:MONO MOD., 400Hz 30%(22.5kHz Dev.) or 400Hz 100%(75kHz Dev.) S:STEREO MOD., 1kHz, L or R=30%(20.25kHz+7.5kHz Dev.) NOTE:Before proceeding to further adjustments after switching power ON, let the tuner run for ten minutes to allow the circuits to stabilize. FM SSG Displayed Adjustment Adjustment Method No. Frequency(MHz) Level(dBf) Frequency(MHz) Point (Switch Position) TUN Volt 1 ••••• ••••• 108.0 L5 DC V Meter(1) : 6V IF 2 98.1 M 60—100 98.1 T51 Center Meter : 0 ANT Coil 3 98.1 M 5 98.1 L2 mV Meter(1) : Maximum RF Coil 4 98.1 M 5 98.1 L4 mV Meter(1) : Maximum IFT 5 98.1 M 5 98.1 T31 mV Meter(1) : Maximum (STEREO MODE) ARC 6 98.1 S 40 98.1 VR154 mV Meter(1) : Separation 5dB (STEREO MODE) www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 42 KEH-P490,P4900,P4950 7. GENERAL INFORMATION 7.1 DISASSEMBLY - Remove the Tuner Amp Unit(Fig.2) Remove the two screws. Remove the four screws. Remove the screw. Unbend the tabs at four locations indicated by arrow until straight. Remove the Tuner Amp Unit. - Remove the Case(not shown) 1.Remove the two screws. 2.Remove the Case. - Remove the Cassette Mechanism Module (not shown) 1.Remove the four screws. 2.Disconnect the connector, and then remove the Cassette Mechanism Module. - Remove the Panel Unit(Fig.1) Disengage the stopper at two locations indi- cated by arrow. Remove the Panel Unit. Fig.1 Fig.2 Panel Unit Tuner Amp Unit Cassette Mechanism Module www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 43 KEH-P490,P4900,P4950 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Vref IN1_L IN2_L IN3_L IN4+_L AGND Loud- out_L SVin_L Front- out_L Rear- out_L FIE_L DGND IN4-_L CLK VCC IN1_R IN2_R IN3_R IN4+_R AGND Loud- out_R SVin_R Front- out_R Rear- out_R FIE_R STB IN4-_R DATA Isolator circuit Primary volume Anti Alias filter Treble Anti radiation filter Middle Bass Loudness volume FIE Fader volume Secondary volume Zero cross detect circuit Primary volume Anti Alias filter Middle Treble Bass Isolator circuit Anti radiation filter Loudness volume Zero cross detect circuit Fader volume Secondary volume FIE Digital block Auto-Zero Auto-Zero 7.2 PARTS 7.2.1 IC CXA2559Q PML003AM www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 44 KEH-P490,P4900,P4950 - Pin Functions(PE5086A) Pin No. Pin Name I/O Format Function and Operation 1 ASENBO O C Slave power supply control output 2 NC Not used 3 ADPW O C A/D converter power 4 AVSS GND 5 swvdd O C Grille power supply control output 6 st I FM stereo input 7 AVREF1 D/A converter standard voltage 8 KYDT I Grille MicroComputer data input 9 DPDT O C Grille MicroComputer data output 10 NC Not used 11 TUNPD1 I PLL IC data input 12 TUNPD0 O C PLL IC data output 13 TUNPCK O C PLL IC clock output 14 TUNPCE O C PLL IC chip enable output 15 currrq O C Tuner voltage FIX output 16 NC Not used 17 TX O C IP-BUS data output 18-12 NC Not used 22 VST O C Strobe pulse output for electronic volume 23 VCK O C Clock output for electronic volume 24 VDT O C Data output for electronic volume 25-28 NC Not used 29 FM O C FM power control output 30 AM O C AM power control output 31 CM O C Cassette mechanism capstan motor control output 32 NC Not used 33 VSS GND 34 SC2 O C Cassette mechanism sub motor control output 35 SC1 O C Cassette mechanism sub motor control output 36 MS I Cassette mechanism MS sense input 37 mcmute I Cassette mechanism mute input 38 mtl I Metal sense input 39 NC Not used 40 n/R O C Normal reverse output 41 PLAY O C Tape MS filter select output 42 loadsw I Tape loading input 43 POS I Cassette mechanism position sense input 44 RES I Cassette mechanism reverse end sense input 45 PEE O C Beep tone output 46 NES I Cassette mechanism forward end sense input 47 NC Not used 48 STBY O C Stand-by output 49-52 NC Not used 53 SD I SD input 54 mute O C Mute output 55 SYSPW O C System power supply control output 56-59 NC Not used 60 reset I Reset input 61 RX I IP-BUS data input 62 NC Not used 63 dsens I Grille detach sense input 64 TELIN I Cellular mute input 65 asens I ACC power sense input 66 bsens I Back up power sense input 67 CLKIN I Clock sense input 68 VDD VDD 69 X2 O C Oscillator output 70 X1 I Oscillator input www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 45 KEH-P490,P4900,P4950 IC's marked by* are MOS type. Be careful in handling them because they are very liable to be damaged by electrostatic induction. *PE5086A 80 1 20 21 40 41 60 61 Pin No. Pin Name I/O Format Function and Operation 71 GND GND 72 NC Not used 73 TESTIN I Test program mode input 74 AVDD A/D converter analog power supply (VDD) 75 AVREF0 I A/D converter standard voltage input 76 SL I Signal level input 77,78 MODEL2,1 I Model select input 79,80 NC Not used Format Meaning C C MOS www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 46 KEH-P490,P4900,P4950 - Pin Functions (PD6278C) Pin No. Pin Name I/O Function and Operation 1-5 SEG4-0 O LCD segment output 6-9 COM3-0 O LCD common output 10 V3 LCD drive power supply 11-14 KS4-1 O Key strobe output 15,16 KD1,2 I Key data input (analogue input) 17 REM I Remote control reception 18 RXD I System micro computer UART communication data input 19 rst I System reset 20 TXD O System micro computer UART communication data output 21 MODA GND 22 X0 Crystal oscillator connection pin 23 X1 Crystal oscillator connection pin 24 VSS GND 25,26 KD3,4 I Key data input 27,28 KS6,5 O Key strobe output 29-55 SEG39-13 O LLCD segment output 56 VCC Power supply 57-64 SEG12-5 O LCD segment output *PD6278C 64 1 16 17 32 33 48 49 www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 47 KEH-P490,P4900,P4950 7.2.2 DISPLAY - CAW1563 SEGMENT COMMON www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 48 KEH-P490,P4900,P4950 8. OPERATIONS AND SPECIFICATIONS - Connection Diagram (KEH-P490/X1M/UC) This Product Antenna jack Multi-CD player (sold separately) To terminal always supplied with power regardless of ignition switch position. To electric terminal controlled by ignition switch (12 V DC) ON/OFF. Connecting cords with RCA pin plugs (sold separately) Blue/white To system control terminal of the power amp or Auto-antenna relay control terminal. (Max. 300 mA 12 V DC.) Power amp (sold separately) To vehicle (metal) body. Rear speaker Front speaker Black (ground) Red Yellow White White/black Gray Gray/black Green Green/black Violet Violet/black Rear output Fuse + ≠� + ≠� + ≠� + ≠� + ≠� + ≠� Left Right System remote control Front speaker Rear speaker Rear speaker Rear speaker Perform these connections when using a different amp (sold separately). With a 2 speaker system, do not connect anything to the speaker leads that are not connected to speakers. www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 49 KEH-P490,P4900,P4950 - Connection Diagram (KEH-P4900/X1M/UC) This Product Antenna jack Multi-CD player (sold separately) To terminal always supplied with power regardless of ignition switch position. To electric terminal controlled by ignition switch (12 V DC) ON/OFF. Connecting cords with RCA pin plugs (sold separately) Blue/white To system control terminal of the power amp or Auto-antenna relay control terminal. (Max. 300 mA 12 V DC.) Power amp (sold separately) To vehicle (metal) body. Rear speaker Front speaker Black (ground) Red Yellow White White/black Gray Gray/black Green Green/black Violet Violet/black Rear output Fuse + ≠� + ≠� + ≠� + ≠� + ≠� + ≠� Left Right System remote control Front speaker Rear speaker Rear speaker Rear speaker Perform these connections when using a different amp (sold separately). With a 2 speaker system, do not connect anything to the speaker leads that are not connected to speakers. www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 50 KEH-P490,P4900,P4950 - Connection Diagram (KEH-P4950/X1M/ES) 1.This Product 3.Antenna jack 4.Multi-CD player (sold separately) 10. To terminal always supplied with power regardless of ignition switch position. 8.To electric terminal controlled by ignition switch (12 V DC) ON/OFF. 12. Connecting cords with RCA pin plugs (sold separately) 13. Blue/white 14. To system control terminal of the power amp or Auto- antenna relay control terminal. (Max. 300 mA 12 V DC.) 16. Power amp (sold separately) 6.To vehicle (metal) body. 20. Rear 19. Front 5.Black (ground) 7.Red 9.Yellow 21. White 22. White/black 23. Gray 24. Gray/black 25. Green 26. Green/black 27. Violet 28. Violet/black 2.Rear output 11. Fuse + ≠� + ≠� + ≠� + ≠� + ≠� + ≠� 15. System remote control 17. Left speaker 18.Right speaker 19. Front 20. Rear 20. Rear 20. Rear 30. Perform these connections when using a different amp (sold separately). 29. With a 2 speaker system, do not connect anything to the speaker leads that are not connected to speakers. www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 51 KEH-P490,P4900,P4950 8.1 OPERATIONS (KEH-P490/X1M/UC) 5/∞�/2/3 buttons SOURCE/OFF button +/– button AUDIO button Detach button Buttons 1–6 Cassette door EJECT button PAUSE/BSM button RPT button CLOCK button BAND button DISPLAY button EQ button AUDIO button +/– button PAUSE button Press once to pause play. 5/∞�/2/3 buttons CD button Press once to select a CD. TAPE button Press once to select a tape. BAND button TUNER button Press once to select the tuner. ATT button This lets you quickly lower volume level (by about 90%). Press once more to return to the original volume level. KEH-P490/X1M/UC ONLY www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 52 KEH-P490,P4900,P4950 To Listen to Music The following explains the initial operations required before you can listen to music. Note: • Loading a cassette in this product. 1. Select the desired source. (e.g. Tuner) 7 Head Unit Each press of the SOURCE/OFF button selects the desired source in the following order: CD player (one disc only) = Tuner = Tape = Multi-CD player = External Unit = AUX 7 Remote Controller Each press of the button selects the desired source in the following order: TUNER button : Tuner = OFF TAPE button : Tape = AUX = OFF CD button : CD player (one disc only) = Multi-CD player = OFF Note: • External Unit refers to a Pioneer product (such as one available in the future) that, although incom- patible as a source, enables control of basic functions by this product. Only one External Unit can be controlled by this product. • In the following cases, the sound source will not change: * When a product corresponding to each source is not connected to this product. * When no tape is set in this product. * When no magazine is set in the Multi-CD player. * When no disc is set in the CD player. * When the AUX (external input) is set to OFF. • When this product’s blue/white lead is connected to the car’s Auto-antenna relay control terminal, the car’s Auto-antenna extends when this product’s source is switched ON. To retract the antenna, switch the source OFF. 2. Raise or lower the volume. 3. Turn the source OFF. Hold for 1 second Each press changes the Source ... Basic Operation of Tuner Manual and Seek Tuning • You can select the tuning method by changing the length of time you press the 2/3 button. Manual Tuning (step by step) 0.5 seconds or less Seek Tuning 0.5 seconds or more Note: • If you continue pressing the button for longer than 0.5 seconds, you can skip broadcasting stations. Seek Tuning starts as soon as you release the button. • Stereo indicator “” lights when a stereo station is selected. Preset Number Indicator Preset Tuning • You can memorize broadcast stations in but- tons 1 through 6 for easy, one-touch station recall. Preset station recall 2 seconds or less Broadcast station preset memory 2 seconds or more Note: • Up to 18 FM stations (6 in F– (FM1), F— (FM2) and F“ (FM3)) and 6 AM stations can be stored in memory. • You can also use the 5 or ∞ buttons to recall broadcast stations memorized in buttons 1 through 6. Band F– (FM1) = F— (FM2) = F“ (FM3) = AM Band Indicator Frequency Indicator www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 53 KEH-P490,P4900,P4950 Basic Operation of Cassette Player Direction Change Direction Indicator Eject Note: • The Tape function can be turned ON/OFF with the cassette tape remaining in this product. Fast Forward/Rewind and Music Search • Each press of the 3 button selects Fast Forward or Forward- Music Search. FF (Fast Forward) = F-MS (Forward-Music Search) = Normal Playback • Each press of the 2 button selects Rewind or Rewind-Music Search. REW (Rewind) = R-MS (Rewind-Music Search) = Normal Playback Note: • Fast Forward/Rewind and Music Search can be canceled by pressing the BAND button. Cassette Loading Slot Basic Operation of Multi-CD Player This product can control a Multi-CD player (sold separately). Play Time Indicator Disc Search Disc Number Indicator Track Number Indicator Track Search and Fast Forward/Reverse • You can select between Track Search or Fast Forward/Reverse by pressing the 2/3 button for a different length of time. Track Search 0.5 seconds or less Fast Forward/Reverse Continue pressing Disc Number Search (for 6-Disc, 12-Disc types) • You can select discs directly with the 1 to 6 buttons. Just press the number corresponding to the disc you want to listen to. Note: • When a 12-Disc Multi-CD Player is connected and you want to select disc 7 to 12, press the 1 to 6 buttons for 2 seconds or longer. Note: • The Multi-CD player may perform a preparatory operation, such as verifying the presence of a disc or reading disc information, when the power is turned ON or a new disc is selected for playback. “READY” is displayed. • If the Multi-CD player cannot operate properly, an error message such as “ERROR-14” is displayed. Refer to the Multi-CD player owner’s manual. • If there are no discs in the Multi-CD player magazine, “NO DISC” is displayed. www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com KEH-P490,P4900,P4950 General Power source .......... 14.4 V DC (10.8 – 15.1 V allowable) Grounding system ........................................ Negative type Max. current consumption ........................................ 8.5 A Dimensions (KEH-P490/X1M/UC, KEH-P4900/X1M/UC) (DIN) (chassis) ...... 178 (W) × 50 (H) × 155 (D) mm [7 (W) × 2 (H) × 6-1/8 (D) in] (nose) ............ 188 (W) × 58 (H) × 20 (D) mm [7-3/8 (W) × 2-1/4 (H) × 3/4 (D) in] (D) (chassis) ...... 178 (W) × 50 (H) × 160 (D) mm [7 (W) × 2 (H) × 6-1/4 (D) in] (nose) ............ 170 (W) × 48 (H) × 15 (D) mm [6-3/4 (W) × 1-7/8 (H) × 5/8 (D) in] Weight ........................................................ 1.2 kg (2.6 lbs) Dimensions (KEH-P4950/X1M/ES) (DIN) (chassis) ...... 178 (W) × 50 (H) × 155 (D) mm (nose) ............ 188 (W) × 58 (H) × 20 (D) mm (D) (chassis) ...... 178 (W) × 50 (H) × 160 (D) mm (nose) ............ 170 (W) × 48 (H) × 15 (D) mm Weight ...................................................................... 1.2 kg Amplifier Continuous power output is 17 W per channel min. into 4 ohms, both channels driven 50 to 15,000 Hz with no more than 5% THD. Maximum power output ...................................... 40 W × 4 Load impedance .......................... 4 Ω (4 – 8 Ω allowable) Preout maximum output level/ output impedance .................................... 2.2 V/1 kΩ Equalizer (3 band equalizer) (Low) .............................................................. ±12 dB (Mid) .............................................................. ±12 dB (High) .............................................................. ±12 dB Loudness contour (Low) .................. +3.5 dB (100 Hz), +3 dB (10 kHz) (Mid) ................ +10 dB (100 Hz), +6.5 dB (10 kHz) (High) ................ +11 dB (100 Hz), +11 dB (10 kHz) (volume: –30 dB) Cassette player Tape ........................ Compact cassette tape (C-30 – C-90) Tape speed ........ 4.76 cm/sec.(+0.14cm/sec.,-0.05cm/sec.) Fast forward/rewinding time .... Approx. 100 sec. for C-60 Wow & flutter .......................................... 0.09% (WRMS) Frequency response ...................... 30 – 16,000 Hz (±3 dB) Stereo separation ...................................................... 45 dB Signal-to-noise ratio...................... 61 dB (IHF-A network) FM tuner (KEH-P490/X1M/UC, KEH-P4900/X1M/UC) Frequency range .................................... 87.9 – 107.9 MHz Usable sensitivity .................................................... 11 dBf (1.0 µV/75 Ω, mono, S/N: 30 dB) 50 dB quieting sensitivity .... 16 dBf (1.7 µV/75 Ω, mono) Signal-to-noise ratio ...................... 70 dB (IHF-A network) Distortion .......................... 0.3% (at 65 dBf, 1 kHz, stereo) Frequency response ...................... 30 – 15,000 Hz (±3 dB) Stereo separation .......................... 40 dB (at 65 dBf, 1 kHz) Selectivity .................................................... 70 dB (2ACA) Three-signal intermodulation (desired signal level) ........................................ 50 dBf (two undesired signal level: 100 dBf) FM tuner (KEH-P4950/X1M/ES) Frequency range ...................................... 87.5 – 108 MHz Usable sensitivity .................................................... 11 dBf (1.0 µV/75 Ω, mono, S/N: 30 dB) 50 dB quieting sensitivity .... 16 dBf (1.7 µV/75 Ω, mono) Signal-to-noise ratio ...................... 70 dB (IEC-A network) Distortion .......................... 0.3% (at 65 dBf, 1 kHz, stereo) Frequency response ...................... 30 – 15,000 Hz (±3 dB) Stereo separation .......................... 40 dB (at 65 dBf, 1 kHz) AM tuner (KEH-P490/X1M/UC, KEH-P4900/X1M/UC) Frequency range ...................................... 530 – 1,710 kHz Usable sensitivity .............................. 18 µV (S/N: 20 dB) Selectivity ................................................ 50 dB (±10 kHz) AM tuner (KEH-P4950/X1M/ES) Frequency range ........................ 531 – 1,602 kHz (9 kHz) 530 – 1,710 kHz (10 kHz) Usable sensitivity .............................. 18 µV (S/N: 20 dB) Selectivity .................................................. 50 dB (±9 kHz) 50 dB (±10 kHz) Note: • Specifications and the design are subject to possi- ble modification without notice due to improve- ments. 8.2 SPECIFICATIONS www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com