ORDER NO. 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 EUROPE NV Haven 1087, Keetberglaan 1, 9120 Melsele, Belgium PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 253 Alexandra Road, #04-01, Singapore 159936 PIONEER CORPORATION 2000 c Type Model Power Requirement The voltage can be converted by M-LA21 the following method. DBDXCN AC110-127V / 220-230V / 240V With the Voltage Selector THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S). M-LA21 PROVISIONAL T – IZK OCT. 2000 Printed in Japan STEREO POWER AMPLIFIER 1. SAFETY INFORMATION ....................................... 2 2. EXPLODED VIEWS AND PARTS LIST ................. 3 3. SCHEMATIC DIAGRAM .......................................... 6 4. PCB CONNECTION DIAGRAM ........................... 12 5. PCB PARTS LIST ................................................ 18 6. ADJUSTMENT..................................................... 19 CONTENTS 7. GENERAL INFORMATION ................................ 20 7.1 DIAGNOSIS .................................................. 20 7.1.1 SINGLE OPERATION METHOD ......... 20 7.1.2 DISASSEMBLY .................................... 21 8. PANEL FACILITIES AND SPECIFICATIONS .... 23 LA21 STEREO POWER AMPLIFIER DINAMIC — OFF _ ON DYNAMIC MODE HIGH EFFICIENT AMPLIFIER POWER OUTPUT Component Model Service manual Remarks COMPACT MINI COMPONENT X-LA21 RRV2370 STEREO CD TUNER XC-LA21 RRV2392 STEREO POWER AMPLIFIER M-LA21 RRV2393 This manual. SPEAKER SYSTEM S-LA21 RRV2394 ¶ System component Table ¶ This product is a system(s) component. This product does not function properly independently ; to avoid malfunctions, be sure to connect it to the prescribed system component(s), otherwise damage may result. ¶ Please connect it to the STEREO CD TUNER XC-LA21, for operation inspection. 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 2 M-LA21 1. SAFETY INFORMATION 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 NOTICE (FOR CANADIAN MODEL ONLY) Fuse symbols (fast operating fuse) and/or (slow operating fuse) on PCB indicate that replacement parts must be of identical designation. REMARQUE (POUR MODÈLE CANADIEN SEULEMENT) Les symboles de fusible (fusible de type rapide) et/ou (fusible de type lent) sur CCI indiquent que les pièces de remplacement doivent avoir la même désignation. ANY MEASUREMENTS NOT WITHIN THE LIMITS OUTLINED ABOVE ARE INDICATIVE OF A POTENTIAL SHOCK HAZARD AND MUST BE CORRECTED BEFORE RETURNING THE APPLIANCE TO THE CUSTOMER. 2. PRODUCT SAFETY NOTICE Many electrical and mechanical parts in the appliance have special safety related characteristics. These are often not evident from visual inspection nor the protection afforded by them necessarily can be obtained by using replacement components rated for voltage, wattage, etc. Replacement parts which have these special safety characteristics are identified in this Service Manual. Electrical components having such features are identified by marking with a on the schematics and on the parts list in this Service Manual. The use of a substitute replacement component which does not have the same safety characteristics as the PIONEER recommended replacement one, shown in the parts list in this Service Manual, may create shock, fire, or other hazards. Product Safety is continuously under review and new instructions are issued from time to time. For the latest information, always consult the current PIONEER Service Manual. A subscription to, or additional copies of, PIONEER Service Manual may be obtained at a nominal charge from PIONEER. 1. SAFETY PRECAUTIONS The following check should be performed for the continued protection of the customer and service technician. LEAKAGE CURRENT CHECK Measure leakage current to a known earth ground (water pipe, conduit, etc.) by connecting a leakage current tester such as Simpson Model 229-2 or equivalent between the earth ground and all exposed metal parts of the appliance (input/output terminals, screwheads, metal overlays, control shaft, etc.). Plug the AC line cord of the appliance directly into a 120V AC 60Hz outlet and turn the AC power switch on. Any current measured must not exceed 0.5mA. (FOR USA MODEL ONLY) Leakage current tester Reading should not be above 0.5mA Device under test Test all exposed metal surfaces Also test with plug reversed (Using AC adapter plug as required) Earth ground AC Leakage Test 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 M-LA21 2. EXPLODED VIEWS AND PARTS LIST NOTES: • Parts marked by "NSP" are generally unavailable because they are not in our Master Spare Parts List. • The mark found on some component parts indicates the importance of the safety factor of the part. Therefore, when replacing, be sure to use parts of identical designation. • Screws adjacent to mark on the product are used for disassembly. 2.1 PACKING (X-LA21) • PACKING PARTS LIST Mark No. Description Part No. 1 AM Loop Antenna ANT-PMT1E-AL 2 Remote Control Unit AXD7289 3 RCA Audio Cable 122003220100 NSP 4 ‘AAA’ Size R03 Batteries 130115004000 5 FM Wire Antenna 132030001001 6 Power-cord Plug Conversion Adaptor 138011722000 7 Battery Door 500RC4603070 8 Polyform Unit 800PMT190001 9 Polyfoam (Speaker) 800PMT390000 10 Poly Foam Sheet (C) SP 801999000002 11 Polythenefoam Sheet 801999000005 NSP 12 PE Polybag (AC Cord) 805032115000 NSP 13 PE Polybag (Remocon) 805035105000 NSP 14 PE Polybag (Antenna) 805070100000 NSP 15 PE Polybag (I Book) 805085140000 16 Operating Instructions 811PMT391011 (English/Spanish/Chinese) 17 Carton 813PMT393020 18 Corrugate Card 815001405213 SYSTEM SPEAKER REAR XC-LA21 REAR M-LA21 FRONT FRONT FRONT FRONT TOP SIDE TOP SIDE 13 3 1 5 14 7 4 11 17 15 9(2/2) 10 10 9(1/2) 16 8(2/2) 12 8(1/2) 18 18 11 8(2/2) 12 12 8(1/2) 6 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 4 M-LA21 22 15 18 2 51 16 3 29 49 42 49 53 52 52 47 48 52 52 53 20 53 50 53 53 53 52 53 31 53 53 53 34 28 7 5 6 52 53 10 54 54 53 53 50 12 19 45 13 43 1 32 33(×3) 49 40 9 4 53 53 53 53 53 53 53 53 52 52 30 53 35 17 14 25 36 26 38 37 36 39 55 44 46 44 52 27 B C C E G B D D A F F H G A E H 11 23 24 21 D B C A F E G 2.2 EXTERIOR SECTION 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 M-LA21 1 AMP Assy PMT1LA100011 2 TRANSFORMER Assy PMT1LA100031 3 PRIMARY Assy PMT1LA100041 4 JACK Assy PMT1LA100021 5 POWER METER Assy PMT1LA100081 6 LED Assy PMT1LA100051 7 HP JACK Assy PMT1LA100111 8 • • • • • NSP 9 PROTECTION PCB PMT1LA100141 10 S-Assy PMT3 FP01 SUBPMT3AMFP 11 Meter Assy SUBPMT3MTR NSP 12 Heat Sink Board 033PMT1LS100 13 DC Cord 122006020060 14 Transformer (TR701) 1236C0250140 15 Fuse 124010020001 (F322, F323 : T1AL/250V) 16 Fuse 124025020001 (F328, F329 : T2.5A/250V) 17 Fuse (F321 : T3.15A/250V) 124031520003 18 Fuse 124063020001 (F324-F327 : T6.3AL/250V) 19 AC Cord 134250220000 20 Back Cover 500PMT303000 21 Diffuser Lens 500PMT309000 22 Top Panel 500PMT311001 23 Meter Holder 505PMT307000 24 Lens Holder 505PMT308000 25 Rectifier PCB Bracket 505PMT370000 26 PCB Bracket-R 505PMT372000 27 Mounting Bracket 505266422000 28 Power Knob 510PMT312001 • EXTERIOR SECTION PARTS LIST Mark No. Description Part No. Mark No. Description Part No. 29 Voltage Selector Knob 510PMT319000 30 Side Panel-L 600PMT117002 31 Side Panel-R 600PMT118002 NSP 32 Bottom Tray 600PMT302000 33 Copper Post 603PMT381000 34 Power Switch Bracket 605PMT313000 35 Transformer Bracket 605PMT317000 36 Mounting Bracket-1 605PMT373000 37 Mounting Bracket-2 605PMT374000 38 Mounting Bracket-3 605PMT375000 39 Mounting Bracket-4 605PMT376000 40 • • • • • 41 Heat Sink CDG-74 6130CDG74000 42 PCB Sheet 650PMT377000 43 Bushing 700PMT156000 44 Rubber Foot 700PMT384000 45 Strain Relief Bushing 700036022000 46 EMC Label 809PMT394030 47 Back Label 809PMT396040 NSP 48 Serial Label 809000009000 49 Screw BBZ30P100FNI 50 Screw BBZ30P180FMC 51 Screw BBZ40P060FMC 52 Screw BPZ30P100FNI 53 Screw KBZ30P060FNI 54 Foot Stand 509PMT329000 55 Holding PCB PMT1LA-100-121 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 M-LA21 6 A B C D 1 2 3 4 1 2 3 4 POWER METER ASSY (PMT1LA100081) E JACK ASSY (PMT1LA100021) D AMP ASSY (PMT1LA100011) A IC601 STK411-230 POWER AMPLIFIER RL601 PLY-DPDT L R SPEAKER OUT 18 14 IC504 BA4558N From XC-LA21 3 (PH) (PH) (PH) 4 4 4 4 4 4 7 7 5 7 3. SCHEMATIC DIAGRAM 3.1 OVERALL WIRING DIAGRAM 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 M-LA21 7 A B C D 5 6 7 8 5 6 7 8 TRANSFORMER ASSY (PMT1LA100031) B PRIMAY ASSY (PMT1LA100041) C AC IN PHONES HP JACK ASSY (PMT1LA100111) G LED ASSY (PMT1LA100051) F : AUDIO SIGNAL ROUTE (PH) (PH) From XC-LA21 3 : AUDIO SIGNAL ROUTE (PHONES) (PH) D311 Note : When ordering service parts, be sure to refer to "EXPLODED VIEWS and PARTS LIST" or "PCB 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 M-LA21 8 A B C D 1 2 3 4 1 2 3 4 AMP ASSY (PMT1LA100011) 010-550411-000A A CN602 136-08PMT3-200J CN22 D MTZJ6.2A MTZJ6.2A 018-030036-300A 018-030036-300A 2/2 1/2 BA4558DX BA4558DX 011-020602-001A 011-025401-000A NJM78M12FA NJM79M12FA 006-033200-80D 006-033200-63D 004-022410-100 004-022410-100 003-030840-050 003-030840-050 3.2 AMP, TRANSFORMER and PRIMARY ASSYS 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 M-LA21 9 A B C D 5 6 7 8 5 6 7 8 PRIMARY ASSY (PMT1LA100041) C TRANSFORMER ASSY (PMT1LA100031) B WH601 136-05PMT3-350J WH1 025-230041-000A CN604 136-07PMT3-202J WH602 136-04PMT3-350J CN1 135-PHS060-060J CN8 CN603 136-06PMT3-200J CN4 D CN23 D AC IN 2/2 1/2 BA4558DX BA4558DX 011-025401-000A 011-020005-000A 011-020005-000A 011-020005-000A 011-020005-000A 011-020602-001A 011-024001-000A BZ605 MTZJ3.0A BZ604 MTZJ3.0A 010-024001-000A 128-1221125-000 Q617 DTA114YS 008-801144-000A Q610 DTA114YS 008-801144-000A D311 011-024001-000A 006-033200-63D 006-033200-80D : AUDIO SIGNAL ROUTE (L ch) : AUDIO SIGNAL ROUTE (PHONES) HP HP HP HP • NOTE FOR FUSE REPLACEMENT FOR CONTINUED PROTECTION AGAINST RISK OF FIRE. REPLACE WITH SAME TYPE AND RATINGS ONLY. CAUTION - 124063020001 124010020001 124031520003 124025020001 124025020001 1236C0250140 025-230041-000A 122006020060 AC CORD 124250220000 137-400001-000J NEUTRAL LIVE 135-PHS020-020J 128-090109-000A C 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 M-LA21 10 A B C D 1 2 3 4 1 2 3 4 CN23 JK501 118-000134-003J JK502 118-020202-0001J JACK ASSY (PMT1LA100021) D WH602 A AUDIO IN L R IC504 BA4558DX IC502 BA4558DX 1/2 MTZJ9.1C MTZJ12B 135-053259-040J 004-033210-100 004-056210-100 004-056210-100 3.3 JACK, POWER METER, LED and HP JACK ASSYS D 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 M-LA21 11 A B C D 5 6 7 8 5 6 7 8 CN11 136-11PMT3-200J CN2 135-PHS110-110J CN22 135-PHS080-080J CN3 135-PHS070-070J CN4 135-PHS070-070J CN13 050-060060-200J CN16 135-030060-200J CN17 CN12 136-17PMT3-200J CN20 135-053259-040J JK503 116-008020-000 110-033162-003A 110-033040-013A PHONES POWER METER ASSY (PMT1LA100081) E HP JACK ASSY (PMT1LA100111) G LED ASSY (PMT1LA100051) F CN602 A CN604 A IC502 BA4558DX 2/2 : AUDIO SIGNAL ROUTE (L ch) : AUDIO SIGNAL ROUTE (PHONES) HP HP HP HP HP HP HP HP HP JACK ASSY SW501 : DYNAMIC 021-022322-000A G F E D 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 M-LA21 12 A B C D 1 2 3 4 1 2 3 4 E E E Z2 Z1 WH601 Q617 P3 R670 D607 D609 D608 D610 CN603 EC633 IC605 W603 W607 W606 P2 W601 W602 W605 W604 EC622 EC623 R305 EC621 IC604 EC625 EC626 EC620 EC624 D612 D611 C618 C619 ORN BLU BLK WHT RED WHT YEL ORN RED BRN BLK PWRCTL CTLGND MUTE 16VAC2 GND 16VAC1 ACVH2 ACVL2 ACGND ACVL1 ACVH1 NOTE FOR PCB DIAGRAMS : • Part numbers in PCB diagrams match those in the schematic diagrams. • The parts mounted on this PCB include all necessary parts for several destinations. For further information for respective destinations, be sure to check with the schematic diagram. • View point of PCB diagrams. Capacitor Connector P.C.Board Chip Part SIDE A SIDE B Q617 AMP ASSY A WH1 B CN1 B SIDE A A 4. PCB CONNECTION DIAGRAM 4.1 AMP ASSY 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 M-LA21 13 A B C D 5 6 7 8 5 6 7 8 E E E E E E E E E E E E E E E E CN604 EC608 C637 C636 DZ605 DZ604 Z1 BLK BLK. R681 D616 WH602 P3 W612 W640 D615 D614 Q616 R672 R671 R669 W639 W638 W637 Q615 W630 C602 C630 C631 C601 C606 CN602 D613 R622 W613 EC630 EC631 W633 W628 R659 W614 W625 EC617 R667 D606 R646 R649 R647 R648 W618 W616 W611 W626 Q606 EC616 EC619 Q604 R654 R652 EC615 Q605 R639 W602 W619 W617 P1 W610 W627 W634 W629 W635 R661 R625 EC622 W624 R618 R620 EC614 D601 DZ603 Q603 Q602 Q601 R623 R626 R644 R635 R663 R628 R624 R627 R631 R630 R633 R637 R645 R632 R634 R636 R638 R642 R643 R640 R641 EC610 EC611 EC607 EC609 C607 C610 C609 C608 EC612 EC613 C611 C612 IC603 IC602 W609 L601 L602 W620 W621 W622 W623 R602 R601 DZ602 DZ601 R609 R608 EC626 EC620 EC624 IC601 R657 C634 C633 R653 R651 R662 R656 Q613 Q611 Q614 Q612 Q610 R629 R604 R664 R650 EC601 R603 EC602 R605 C603 C604 R615 D602 R610 R607 R612 R617 R606 EC606 R611 EC605 R613 C635 R658 R668 R621 EC618 R665 Q607 RL601 R616 Q608 EC603 R619 EC604 R614 Q609 D604 PMT1LA-01-01 AMP BOARD "BOND" WHT WHT RED BLK BLK ORN WHT WHT WHT WHT RED PWRCTL AGND L+R SIG SPKR GND GND SPKL -12V +12V GND HPRCH HPGND HPLCH SPKCTL AGND RIN AGND LIN CTL GND Q617 IC603 IC602 Q603 Q602 Q601 IC601 Q609 Q616 Q610 Q607 Q615 Q604 Q606 Q605 Q611 Q613 Q614 Q612 Q608 CN23 D CN4 D CN22 D 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 M-LA21 14 A B C D 1 2 3 4 1 2 3 4 CN9 CN8 PWRCTL GND. PWR J2 F329 J1 F328 N L SW301 C321 RL301 R308 C316 C315 L301 F321 D311 "BOND" BRN BLU YEL ORN RED BLK F321 F328 F329 L N PRIMARY BOARD PMT1LA-01-04 PRIMARY DANGER MUTE CTLGND PRIMARY ASSY C AC IN NEUTRAL LIVE SIDE A C 4.2 TRANSFORMER and PRIMARY ASSYS 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 M-LA21 15 A B C D 5 6 7 8 5 6 7 8 CN10 WH1 CN1 PT1 BRN BLU YEL ORN RED BLK F326 F327 F325 F324 F323 F322 ORN BLU BLK WHT RED BLK PWRCTL GND TRANSFORMER BOARD PRIMARY DANGER GND 16VAC1 16VAC2 MUTE ACVH2 ACVL2 ACGND ACVL1 ACVH1 PMT1LA-01-03 TRANSFORMER ASSY B CN603 A WH601 A SIDE 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 M-LA21 16 A B C D 1 2 3 4 1 2 3 4 MSSOP36-P-450-0.A R577 R589 CN4 J564 J563 D511 C558 R581 R591 R520 EC541 R576 Q512 EC562 EC561 CN22 CN23 CN3 CN2 W1 J54 J83 J82 R575 Q513 J81 R555 J80 J78 J74 EC560 EC559 J71 EC546 Z2 Z1 J68 J67 C557 C556 R506 Q518 C549 R505 R504 R503 Q517 C548 R502 R501 R507 Q516 C547 R599 R598 Q515 R597 R596 R594 R593 DZ506 EC549 R592 Q514 R570 R569 J61 J59 C546 EC548 EC537 R561 EC531 R560 J52 J40 J39 J29 C545 C544 R588 R587 R586 R585 R584 JK502 JK501 C531 R580 R579 R572 R571 EC534 EC533 R567 C543 C541 C539 R590 R558 IC504 R557 C535 R529 EC530 C533 R530 C532 R554 R553 R552 R550 R551 R549 C530 C529 C528 R548 R547 C524 R542 R534 R533 R532 R545 C523 C520 C519 C518 C517 C516 R521 R523 R522 C525 R518 IC512 Q501 Q511 Q503 Q502 Q504 D510 D506 DZ504 D509 DZ505 EC520 EC518 EC515 EC517 EC513 EC512 EC511 EC521 EC528 EC527 EC526 EC525 EC524 EC523 EC522 EC545 EC535 EC544 EC532 EC529 EC536 EC514 IC502 "BOND" "BOND" "BOND" "BOND" PWRCTL AGND JACK BOARD FOR NON-KARAOKE TO EC522 TO EC523 RCHOUT AGND AGND -12V AGND +12V HPSW HPRCH HPGND HPLCH +12V -12V +12V ECHOSIG1 ECHOSIG2 LIN RIN GND MICIN MICSW VOLGND PMT1LA-01-02 MICGND MICSIG1 MICSIG2 -6dB SW METER METERIN GND HPRCH HPGND HPLCH HPSW LCHOUT GND GND SPKR SPKL Q511 Q515 Q518 Q517 Q513 Q512 Q501 Q502 Q503 Q504 IC502 IC504 IC512 Q516 Q514 JACK ASSY D CN12 E WH602 A CN604 A CN11 E CN602 A SIDE A D 4.3 JACK ASSY 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 M-LA21 17 A B C D 1 2 3 4 1 2 3 4 METER W6 CN12 CN13 CN11 CN15 CN14 W2 W1 W5 W3 W4 CN16 R574 R573 CN17 LED501 LED503 LED502 EC556 EC557 C551 R565 EC555 R564 R568 EC558 W554 W552 CN20 JK504 CN19 IC506 JK503 SW501 PMT1LA-01-11 PMT1LA-01-05 PMT1LA-01-08 ECHOS1 +12V ECHOS2 VOLGND MICS2 -12V MICS1 MIC SW -12V MIC +12V MIC GND +12V DYNAMIC HP Lch HP GND HP Rch HP SW HPSW DYNAMIC +12V HP SW +12V DYNAMIC MICS1 -12V ECHOS2 +12V +12V DYNAMIC +12v GND MIC ECHOS1 MICS2 MIC SW MIC GND MIC LED GND METER VOLGND HP Rch HP GND HP Lch PMT1LA-01-11 PMT1LA-01-05 PMT1LA-01-08 MIC SW MIC GND MIC HPRCH HPLCH HPGND DYNA +12v GND -12V HP JACK ASSY G LED ASSY F POWER METER ASSY E CN3 D CN2 D SIDE A G F E 4.4 POWER METER, LED and HP JACK ASSYS 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 M-LA21 Mark No. Description Part No. Mark No. Description Part No. Mark No. Description Part No. Mark No. Description Part No. 5. PCB PARTS LIST NOTES: •Parts marked by "NSP" are generally unavailable because they are not in our Master Spare Parts List. •The mark found on some component parts indicates the importance of the safety factor of the part. Therefore, when replacing, be sure to use parts of identical designation. •When ordering resistors, first convert resistance values into code form as shown in the following examples. Ex.1 When there are 2 effective digits (any digit apart from 0), such as 560 ohm and 47k ohm (tolerance is shown by J=5%, and K=10%). 560 Ω → 56 × 10 1 → 561 ........................................................ RD1/4PU 5 6 1 J 47k Ω → 47 × 10 3 → 473 ........................................................ RD1/4PU 4 7 3 J 0.5 Ω → R50 ..................................................................................... RN2H R 5 0 K 1 Ω → 1R0 ..................................................................................... RS1P 1 R 0 K Ex.2 When there are 3 effective digits (such as in high precision metal film resistors). 5.62k Ω → 562 × 10 1 → 5621 ...................................................... RN1/4PC 5 6 2 1 F LIST OF ASSEMBLIES AMP ASSY PMT1LA100011 TRANSFORMER ASSY PMT1LA100031 PRIMARY ASSY PMT1LA100041 JACK SSY PMT1LA100021 POWER METER AASSY PMT1LA100081 LED ASSY PMT1LA100051 HP JACK ASSY PMT1LA100111 AMP ASSY SEMICONDUCTORS IC601 (STK411-230) 010-550411-000A IC602,IC603 BA4558DX IC604 NJM78M12FA IC605 NJM79M12FA Q601,Q602 2SK246 Q603 DTA124ES Q605-Q608,Q616 2SC1815 Q611-Q614 2SD1468S Q604,Q609,Q615 2SA1015 Q610,Q617 (DTA114YS) 008-801144-000A D602,D616 1N4148 D604,D606 (RECTIFIER IN-4001B) 011-024001-000A D607-D610 (RECTIFIER J-05) 011-020005-000A D611,D612 (BRIDGE RECTIFIER) 011-020602-001A D614,D615 (RECTIFIER IN-5401BL) 011-025401-000A BZ604,BZ605 MTZJ3.0A DZ601,DZ602 MTZJ6.2A COILS L601,L602 (3µH) 018-030036-300A RELAY RL601 (12V OSA-SS-212DM5) 128-122125-000A CAPACITORS C603,C604,C633,C634 004-022410-100 (MYLAR CAP 0.22 uF/100V) C606,C635 CKCYB471K50 C607,C610 CKCYB682K50 C608,C609,C611,C612 CCCCH100D50 C618,C619 CKCYB103K50 C630,C631 CKCYB102K50 C636,C637 CKCYB101K50 C601,C602 CCCCH030D50 EC607-EC609,EC618 CEAT1R0M50 EC615,EC630,EC631 CEAT2R2M2A EC603,EC604 CEAT2R2M50 EC619 CEAT100M50 EC601,EC602 CEAT101M2A EC621,EC633 CEAT101M25 EC616 CEAT221M16 EC617 CEAT331M10 EC620,EC624 (ELECT3300µF/63V) 006-033200-63D EC625,EC626 (ELECT3300µF/80V) 006-033200-80D EC605,EC606,EC610-EC614 CEAT470M16 EC622,EC623 CEAT471M25 RESISTORS R603,R605 RS2LMF101J R608,R609,R615,R616 RS1LMF4R7J R652,R654 RS3LMFR22J R664,R665 RS1LMF681J Other Resistors RD1/4PU J OTHERS CN602 HSG PMT3-8A JST PHR- 136-08PMT3-200J CN604 HSG PMT3-7C JST PHR- 136-07PMT3-202J WH602 HSG MOLEX 51067-0400 136-04PMT3-350J WH601 HSG MOLEX 51067-0500 136-05PMT3-350J CN603 HSG PMT3-6A JST PHR- 136-06PMT3-200J JP WIRE AWG22 80MM B 051-275080-009J JP WIRE AWG26 80MM B 051-675080-009J ROUND PIN 137-500001-000J TRANSFORMER ASSY OTHERS CN1 HEADER CTL 6 PINS 135-PHS060-060J WH1 HEADER MOLEX 5 PINS 135-053258-050J FUSE HOLDER 7900,HT 550-790000-000J 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 19 M-LA21 Mark No. Description Part No. Mark No. Description Part No. PRIMARY ASSY SEMICONDUCTOR D311 (RECTIFIER IN-4001B) 011-024001-000A RELAY • SWITCH RL301 (RELAY 9 OSA-SS-212DM) 128-090109-000A SW301 (SLIDE SW VOLT.SELECTOR) 025-230041-000A CAPACITORS C315,C321 (CERAMIC CAP 0.01µF) 003-010320-250A OTHERS CN8 HEADER CTL 2 PINS 135-PHS020-020J JP WIRE AWG22 BROWN 054-010150-010J JP WIRE AWG22 ORANGE 054-010150-030J JP WIRE AWG22 BLUE 054-010150-050J JP WIRE AWG22 RED 054-010150-061J JP WIRE AWG22 BLACK 054-010150-093J JP WIRE AWG22 YELLOW 054-010150-100J AC CONTACT TERMINAL 137-400001-000J FUSE HOLDER 7900,HT 550-790000-000J JACK ASSY SEMICONDUCTORS IC502,IC504 BA4558DX Q502,Q515 DTA124ES Q501,Q503,Q513 DTC124ES Q504 2SA1015 Q511 DTC114ES Q512 2SC1815 Q516-Q518 2SK246 D506,D509,D510,D511 1N4148 DZ504 MTZJ9.0C DZ505 MTZJ12B CAPACITORS C541,C543 CKCYB101K50 C539,C546 CKCYF103Z50 C547,C548 (MYLAR CAP 5600pF) 004-056210-100 C549 (MYLAR CAP 3300pF) 004-033210-100 C556,C557 CKCYB102K50 C533,C558 CGCYF104Z25 EC544,EC545 CEJQ2R2M50 EC532,EC548 CEJQ101M16 EC535,EC536 CEJQ220M16 EC561,EC562 CEJQ470M16 EC531,EC533,EC534,EC537 CEJQ100M16 EC546,EC559,EC560 CEJQ100M16 EC529,EC530,EC541 CEJQ1R0M50 RESISTORS All Resistors RD1/4PU J OTHERS CN3,CN4 HEADER CTL 7 PINS 135-PHS070-070J CN22 HEADER CTL 8 PINS 135-PHS080-080J CN2 HEADER CTL 11 PINS 135-PHS110-110J JK501 PUSH TERMINAL BOARD 118-000134-003J JK502 PIN JACK BOARD 118-020202-001J JP WIRE AWG26 50MM R 051-675050-006J JP WIRE AWG26 50MM B 051-675050-009J CN23 HEDER MOLEX 4PINS 53 135-053259-040J POWER METER ASSY OTHERS CN11 HSG PMT3-11A JST 136-11PMT3-200J CN12 HSG PMT3-7A JST 136-07PMT3-200J CN13 CONN PIN 6 PINS 050-060060-200J CN16 CONN PIN 3 PINS 050-030060-200J LED ASSY SEMICONDUCTORS LED502,LED503 (LED-R-3MM&-S-STP)110-033040-013A LED501 (LED-BL-3MM&-S-&&&) 110-033162-003A RESISTORS All Resistors RD1/4PU J HP JACK ASSY SWITCH SW501 (PUSH BOTTON SWICH 2P2T) 021-022322-000A OTHERS JK503 HEADPHONE JACK ST 116-008020-000 D C 6. ADJUSTMENT There is no information to be shown in this chapter. E F G 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 M-LA21 7. GENERAL INFORMATION 7.1.1 SINGLE OPERATION METHOD 7.1 DIAGNOSIS CN9 CN8 PWRCTL GND. PWR J2 F329 J1 F328 N L SW301 C321 RL301 R308 C316 C315 L301 F321 D311 "BOND" BRN BLU YEL ORN RED BLK F321 F328 F329 L N PRIMARY BOARD PMT1LA-01-04 PRIMARY DANGER MUTE CTLGND PRIMARY ASSY C DC power supply DC+9V GND Please supply +9V from DC power supply to the following point. 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 21 M-LA21 Unook × 2 Side Panel R Slide the Side Panel R toward the rear, then remove it. Side Panel L (Remove it as Side Panel R in the same way.) Mounting Bracket Mounting Bracket-4 Remove a Strain Relief. Remove it of R side in the same way. Disconnect a Connector (CN8). Front Panel Unhook Unhook Top Panel 7.1.2 DISASSEMBLY × 2 1 × 2 1 × 2 1 × 2 10 × 2 10 × 4 12 × 4 13 10 15 16 13 14 13 11 × 2 10 × 2 10 × 2 4 × 2 6 × 2 1 × 2 8 × 2 8 2 3 7 9 5 5 5 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 M-LA21 Transformer Bracket 18 Diagnosis 19 17 17 JACK Assy AMP Assy LED Assy POWER METER Assy HP JACK Assy TRANSFORMER Assy PRIMARY Assy F E G B C A D 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 M-LA21 8.1 PANEL FACILITIES 8. PANEL FACILITIES AND SPECIFICATIONS Front Panel 1 PHONES socket – Plug in a pair of headphones for private listening. 2 DYNAMIC MODE indicator – Lights when the DYNAMIC is switched on. LA21 STEREO POWER AMPLIFIER DINAMIC — OFF _ ON DYNAMIC MODE HIGH EFFICIENT AMPLIFIER POWER OUTPUT 2 3 4 1 3 POWER OUTPUT meter – Shows the output level of the currently selected source. 4 DYNAMIC – Switch on for extra power in the bass and a richer treble. 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 M-LA21 8.2 SPECIFICATIONS Power Section & Miscellaneous Power Requirements ............................ AC 110-127/220-230/240 V (switchable), 50/60 Hz Power Consumption (ON mode) (Total including XC-LA21)........................... 538 W Power Consumption (Standby mode) ............................ 1 W Dimensions Stereo power amplifier ......... 160(W) x 176(H) x 315(D) mm Weight Stereo power amplifier ................................................5.1 kg NOTE: Specifications and design subject to possible modification without notice, due to improvements. 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