AEP Model SERVICE MANUAL ELECTRET CONDENSER MICROPHONE MICROFILM SPECIFICATIONS SECTION 1 GENERAL This section is extracted from instruction manual. — 2 — 1. Check the area of your repair for unsoldered or poorly-soldered connections. Check the entire board surface for solder splashes and bridges. 2. Check the interboard wiring to ensure that no wires are "pinched" or contact high-wattage resistors. 3. Look for unauthorized replacement parts, particularly transistors, that were installed during a previous repair. Point them out to the customer and recommend their replacement. 4. Look for parts which, through functioning, show obvious signs of deterioration. Point them out to the customer and recommend their replacement. 5. Check the B+ voltage to see it is at the values specified. 6. Flexible Circuit Board Repairing • Keep the temperature of the soldering iron around 270˚C during repairing. • Do not touch the soldering iron on the same conductor of the circuit board (within 3 times). • Be careful not to apply force on the conductor when soldering or unsoldering. SAFETY CHECK-OUT After correcting the original service problem, perform the following safety checks before releasing the set to the customer. Type Electret condenser microphone Dimensions Microphone parts: 11 × 26 mm (diameter/length)(7/16 × 11/16 in.) Battery box parts: 40 × 16.5 × 46 mm (w/h/d) (15/8 × 21/32 × 113/16 in.) Mass Microphone parts (including cord): Approx. 15 g (0.53 oz.) Battery box parts (including lithium battery and cord): Approx. 17 g (0.6 oz.) Cord Microphone parts: ∅2.2 mm (3/32 in.)OFC litz cord (2 core shielded) Length: approx. 1 m (393/8 in.) Battery box parts: ∅2.2 mm (3/32 in.)OFC litz cord (2 core shielded) Length: approx. 0.3 m (117/8 in.) Supplied accessories Battery box (1) Holder clip (1) Frequently response 100 – 16,000 Hz Directivity Unidirectional × 2 Output impedance 3 kΩ ±30% Sensitivity Open circuit output voltage level -42 ±4dB 0 dB=1V/Pa, 1,000 Hz(1Pa=10µ bar=94 dBSPL) Battery life Approx. 100 hours (with Sony lithium battery CR2025(not supplied)) Maximum sound pressure input level Approx. 110 dBSPL 1% wave distortion at 1,000 Hz (0 dBSPL=2 × 10-5Pa) Operating temperature range 0°C – 40°C (32°F – 104°F) Design and specifications are subject to change without notice. 1 POWER switch 2 Battery check indicator When you turn the power on, the battery check indicator lights up momentarily. This is normal. The light tells you that the battery still has life. When the battery becomes weak, the indicator lights dimly or does not light at all. 3 L-shaped stereo miniplug (gold plated) 4 Battery box You can clip the battery box to your tie, lapel or pocket. 5 Microphone jack 6 L-shaped stereo miniplug (gold plated) 7 Battery compartment 8 Microphone 9 Holder clip A Interlock the projection of the holder to the groove on the microphone. B This microphone holder allows you to tilt the microphone 45° backward or forward. Ver 1.0 1999. 05 w w w . x i a o y u 1 6 3 . c o m Q Q 3 7 6 3 1 5 1 5 0 9 9 2 8 9 4 2 9 8 T E L 1 3 9 4 2 2 9 6 5 1 3 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 SECTION 2 DIAGRAMS 2-1. SCHEMATIC DIAGRAM TOTAL CURRENT MIC UNIT CONNECT : 700uA DISCONNECT : 460uA LITHIUM BATTERY (L CH) (R CH) 2 R22 3.9K R21 2.2M R23 3K C22 0.01 F Q2 2SC4116YG MIC AMP R24 3K C24 1 F R12 2.2M R13 3K C12 0.01 F C14 2.3 0.5 1.0 2.3 0.5 1.0 1 F 3.9K R11 Q1 2SC4116YG MIC AMP L R R14 3K 2.9 MIC UNIT 2-2. PRINTED WIRING BOARD AMP BOARD (SIDE B) UNIT BOARD (SIDE B) UNIT BOARD (SIDE A) AMP BOARD (SIDE A) 1-672-000- 11 (11) 1-672-000- 11 (11) J1 MIC IN S1 POWER D3 R13 R12 D1 C14 C1 C2 R1 D2 C22 R24 R22 R3 D7 R14 R11 R21 R23 C12 C24 Q2 Q1 ON OFF S1 (MIC OUT) MINI PLUG LITHIUM BATTERY CR-2025 3V BATTERY CHECK LAMP 16 1-673-682- 11 (11) L R D10 D20 MIC1 (L CH) MINI PLUG (MIC OUT) MIC2 (R CH) 1-673-682- 11 (11) D6 MIC UNIT 1 2 A B C D E F G H 3 4 5 6 7 Note on Schematic Diagram: • All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics and tantalums. • All resistors are in Ω and 1/4 W or less unless otherwise specified. • % : indicates tolerance. • C : panel designation. • U : B+ Line. • Power voltage is dc 3 V and fed with regulated dc power supply from battery terminal. Note on Printed Wiring Board: • X : parts extracted from the component side. • ® : Through hole. • b : Pattern of the rear side. Caution: Pattern face side: Parts on the pattern face side seen from (Conductor B) the pattern face are indicated. Parts face side: Parts on the parts face side seen from (Component A) the parts face are indicated. • Voltages and waveforms are dc with respect to ground under no-signal (detuned) conditions. • Voltages are taken with a VOM (Input impedance 10 MΩ). Voltage variations may be noted due to normal produc- tion tolerances. • Signal path. F : MIC Ref. No. Location D1 F-2 D2 F-3 D3 D-2 D6 H-3 D7 G-3 D10 B-3 D20 B-4 Q1 E-3 Q2 D-3 • Semiconductor Location — 3 — — 4 — ECM-TS125 w w w . x i a o y u 1 6 3 . c o m Q Q 3 7 6 3 1 5 1 5 0 9 9 2 8 9 4 2 9 8 T E L 1 3 9 4 2 2 9 6 5 1 3 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 — — 6 — SECTION 3 EXPLODED VIEW NOTE: • -XX, -X mean standardized parts, so they may have some differences from the original one. • Items marked “*” are not stocked since they are seldom required for routine service. Some delay should be anticipated when ordering these items. • The mechanical parts with no reference number in the exploded views are not supplied. • Accessories and packing materials is given in the last of this parts list. 3-1. BATTERY BOX SECTION 3-2. MAIN SECTION Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks 1 2 6 7 8 9 10 11 12 4 5 #1 51 53 53 54 54 not supplied 55 52 1 1-790-506-21 CORD,MICROPHONE (2 CORE) 2 2-545-592-01 BUSHING 4 X-2542-165-1 CASE(UPPER) ASSY, BATTERY 5 2-545-588-01 KNOB,SWITCH (POWER) * 6 A-4542-575-A AMP BOARD, COMPLETE 7 2-545-589-01 TERMINAL, PLUS 51 A-4540-182-A CLIP ASSY, HOLDER 52 X-2542-079-1 CLIP ASSY 53 3-704-197-12 SCREW (M1.4 × 2.0), LOCKING 54 3-309-597-31 SCREW (1.4), TAPPING,PRECISION 55 A-4540-570-A MICROPHONE ASSY, LAVALIER (MIC UNIT) 8 2-545-590-01 TERMINAL, MINUS 9 2-545-599-01 SHEET, BLIND 10 2-545-586-01 CASE(LOWER), BATTERY 11 2-545-587-01 HOLDER, BATTERY 12 2-545-668-01 LABEL, MODEL NUMBER #1 7-685-103-19 SCREW +P 2 × 5 TYPE2 NON-SLIT w w w . x i a o y u 1 6 3 . c o m Q Q 3 7 6 3 1 5 1 5 0 9 9 2 8 9 4 2 9 8 T E L 1 3 9 4 2 2 9 6 5 1 3 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 SECTION 4 ELECTRICAL PARTS LEST NOTE: • Due to standardization, replacements in the parts list may be different from the parts specified in the diagrams or the components used on the set. • -XX, -X mean standardized parts, so they may have some difference from the original one. • Items marked “*” are not stocked since they are seldom required for routine service. Some delay should be anticipated when ordering these items. • CAPACITORS: uF: µF • RESISTORS All resistors are in ohms. METAL: metal-film resistor METAL OXIDE: Metal Oxide-film resistor F: nonflammable • COILS uH: µH • SEMICONDUCTORS In each case, u: µ, for example: uA...: µA... , uPA... , µPA... , uPB... , µPB... , uPC... , µPC... , uPD..., µPD... When indicating parts by reference number, please include the board name. Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks * A-4542-575-A AMP BOARD, COMPLETE ******************** < CAPACITOR > C1 1-119-749-11 TANTAL. CHIP 33uF 20% 4V C2 1-104-908-11 TANTAL. CHIP 47uF 20% 4V C12 1-162-974-11 CERAMIC CHIP 0.01uF 50V C14 1-164-346-11 CERAMIC CHIP 1uF 16V C22 1-162-974-11 CERAMIC CHIP 0.01uF 50V C24 1-164-346-11 CERAMIC CHIP 1uF 16V < DIODE > D1 8-719-072-95 DIODE 015AZ3.9-X-TPL3 D2 8-719-064-07 LEDSML-310LTT86 (BATTERY CHECK UNIT) D3 8-719-056-29 DIODE 015AZ4.7-TPL3 D6 8-719-056-29 DIODE 015AZ4.7-TPL3 D7 8-719-056-29 DIODE 015AZ4.7-TPL3 < JACK > J1 1-764-624-51 JACK(MIC IN) < TRANSISTOR > Q1 8-729-230-63 TRANSISTOR 2SC4116-YG Q2 8-729-230-63 TRANSISTOR 2SC4116-YG < RESISTOR > R1 1-216-833-91 RES,CHIP 10K 5% 1/16W R3 1-216-813-11 METAL CHIP 220 5% 1/16W R11 1-218-706-11 METAL CHIP 3.9K 0.50% 1/16W R12 1-216-861-11 METAL CHIP 2.2M 5% 1/16W R13 1-218-703-11 METAL CHIP 3K 0.50% 1/16W R14 1-218-703-11 METAL CHIP 3K 0.50% 1/16W R21 1-218-706-11 METAL CHIP 3.9K 0.50% 1/16W R22 1-216-861-11 METAL CHIP 2.2M 5% 1/16W R23 1-218-703-11 METAL CHIP 3K 0.50% 1/16W R24 1-218-703-11 METAL CHIP 3K 0.50% 1/16W < SWITCH > S1 1-692-397-21 SWITCH, SLIDE (POWER) ************************************************************ MISCELLANEOUS ************* 1 1-790-506-21 CORD, MICROPHONE (2 CORE) ************************************************************ ACCESSORIES & PACKING MATERIALS ******************************* 3-866-282-11 MANUAL, INSTRUCTION (ENGLISH) A-4540-182-A CLIP ASSY, HOLDER AMP — 7 — — 8 — ECM-TS125 Sony Corporation Personal Audio Company 99E1639-1 Printed in Japan ©1999.5 Published by General Engineering Dept. 9-926-940-11 w w w . x i a o y u 1 6 3 . c o m Q Q 3 7 6 3 1 5 1 5 0 9 9 2 8 9 4 2 9 8 T E L 1 3 9 4 2 2 9 6 5 1 3 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