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Aiwa TV-SA2157 Service Manual
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Aiwa TV-SA2157 Service Manual

Aiwa TV-SA2157 Service Manual

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SERVICE MANUAL
COLOR TELEVISION
• This Service Manual is the "Revision Publishing" and replaces "Simple Manual"
of TV-SA2157<SHR>, (S/M Code No. 09-005-434-9T1) and TV-SX2177<SHR>,
(S/M Code No. 09-005-434-8T1).
• This Service Manual does not include "DISASSEMBLY INSTRUCTIONS"
and "ADJUSTMENT". These items will be issued in the next supplement.
TV-SA2157
TV-SX2177
S/M Code No. 09-008-434-8R1
SHR
SHR

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Summary of Contents for Aiwa TV-SA2157

  • Page 1 SERVICE MANUAL COLOR TELEVISION • This Service Manual is the “Revision Publishing” and replaces “Simple Manual” of TV-SA2157<SHR>, (S/M Code No. 09-005-434-9T1) and TV-SX2177<SHR>, (S/M Code No. 09-005-434-8T1). • This Service Manual does not include “DISASSEMBLY INSTRUCTIONS” and “ADJUSTMENT”. These items will be issued in the next supplement.

  • Page 2: Specifications

    (ø 3 in.) (TV-SX2177 only) Operatiing Voltage 110 - 240 V AC, 50/60 Hz Power Consumption TV-SX2177: 95 W (Standby mode: 13.5 W) TV-SA2157: 93 W (Standby mode: 13.5 W) Phone Jack Stereo-mini jack Operating Temperature 5°C – 40°C Operating Humidity 35% –...

  • Page 3: Notices Before Repairing

    NOTICES BEFORE REPAIRING To make the best use of this equipment, make sure to obey the following items when repairing (or mending). 1. Do not damage or melt the tunicate of the leading Insulation resistance: 6.0 ~ 10 MΩ (500 V/s) wire on the AC1 side, including the power supply Voltage-withstand: 3 kV for 1 min cord.
  • Page 4 ELETRICAL MAIN PARTS LIST REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION 87-018-119-080 CAP, CER 100P-50V 87-018-119-080 CAP, CER 100P-50V 8A-JEE-651-010 IC,TMP87CP38N-1N14 87-010-405-080 CAP, ELECT 10-50V 87-A21-133-080 IC,BMR-0101D 87-018-129-080 CAP, CER 680P-50V 87-A91-538-010 RCR UNIT,SBX1981-72P 87-018-149-080 CAP,TC-U 15P-50 CH 87-A21-433-010 IC,KS24C041I...
  • Page 5 REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION C513 87-018-127-080 CAP, CER 470P-50V CN102 87-A60-732-010 CONN,6P JL-BT C601 87-A10-406-090 CAP,CER 270P-2K K BN DE CN601 87-099-675-010 CONN,5P V V C603 87-A12-023-080 CAP,E 10-250 M SME CN801 87-099-674-010 CONN,2P VA V C606...
  • Page 6 REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION R803 87-A00-552-010 RES,CEM 1.0-10W J MPC722 C462 87-010-382-080 CAP, ELECT 22-25V<2177> R804 87-A00-543-080 RES,SD 8.2M-1W J RCR60 C463 87-010-402-080 CAP, ELECT 2.2-50V<2177> R807 87-A00-639-090 RES,CEM 0.15-5W K BPR C464 87-010-401-080 CAP, ELECT 1-50V<2177>...
  • Page 7 REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION C723 87-010-498-080 CAP,E 10-16 GAS C756 87-010-553-080 CAP,E 47-16 M 5L SRE<2177> C724 87-010-494-080 CAP ELECT GAS 1-50 C757 87-010-196-080 CHIP CAPACITOR,0.1-25<2177> C725 87-010-197-080 CAP, CHIP 0.01 DM C758 87-010-313-080 CAP, CHIP 18P-50<2177>...

  • Page 8: Transistor Illustration

    TRANSISTOR ILLUSTRATION E C B B E C E C B S D G 2SC3467D/E 2SC3779D/E 2SA950 2SJ460 2SA1015GR 2SC2785FE 2SK2541 DTC323TS E C B E C B 1 2 3 B C E DTC144ES 2SD2580 SE115N 2SC2688 2SA1175FE 2SC2412K –...
  • Page 9 WIRING - 1 (MAIN) – 9 –...
  • Page 10 SCHEMATIC DIAGRAM - 1 (MAIN) – 10 –...
  • Page 11 WIRING - 2 (AUDIO / KEY / JOINT.F / JOINT.R) – 11 –...
  • Page 12 SCHEMATIC DIAGRAM - 2 (AUDIO) – 12 –...
  • Page 13 WIRING – 3 (NICAM) – 13 –...
  • Page 14 SCHEMATIC DIAGRAM - 3 (NICAM) – 14 –...
  • Page 15 WIRING – 4 (TEXT) – 15 –...
  • Page 16 SCHEMATIC DIAGRAM - 4 (TEXT) – 16 –...
  • Page 17 WIRING – 5 (NK) – 17 –...
  • Page 18 SCHEMATIC DIAGRAM - 5 (NK ) – 18 –...
  • Page 19 IC BLOCK DIAGRAM – 19 –...
  • Page 20 – 20 –...
  • Page 21 WAVEFORM 1 IC1 PIN13: H SYNC IC301 PIN31: SYNC-OUT IC901 PIN2: 2Y IC901 PIN3: Y-COM IC1 PIN26: HD IC901 PIN4: 3Y Q901: BASE 20 µs/div 2 V/div 20 µs/div 20 µs/div 2 V/div 0.2 V/div IC1 PIN27: VD 7 IC902 PIN2: 2Y IC902 PIN3: Y-COM IC902 PIN4: 3Y IC902 PIN11: 3X...
  • Page 22 Q910: COLLECTOR Q911: BASE, EMITTER Q403: DRAIN TV-SX2177 ONLY 20 µs/div 10 µs/div 0.2 V/div 1 V/div IC1 PIN8: BBS Q403: GATE Q108: BASE,EMITTER IC301 PIN47: IFDET-OUT TV-SX2177 ONLY 10 µs/div 20 µs/div 1 V/div 0.5 V/div IC301 PIN55: SIF/H-PIN Q107: BASE, EMITTER IC301 PIN10: APC-FIL 0.1 µs/div...
  • Page 23 IC301 PIN13: YS/YM IC301 PIN24: V-OUT 5 ms/div 5 ms/div 0.5 V/div 0.2 V/div IC301 PIN18: R-OUT IC301 PIN19: G-OUT IC301 PIN30: FBP-IN IC301 PIN32: H-OUT 20 µs/div 20 µs/div 2 V/div 5 V/div 20 µs/div 20 µs/div 2 V/div 2 V/div IC301 PIN20: B-OUT IC301 PIN39: Y-IN...
  • Page 24 IC751 PIN37: V SYNC Q303: BASE Q501: BASE Q501: COLLECTOR Q303: COLLECTOR 5 ms/div 2 V/div 5 ms/div 5 ms/div 2 V/div 100 mV/div IC501 PIN2 Q601: BASE Q601: COLLECTOR 20 µs/div 10 V/div 20 µs/div 5 ms/div 10 V/div 500 V/div IC501 PIN3 IC501 PIN4...
  • Page 25 Q551: COLLECTOR Q552: COLLECTOR IC410 PIN2: CH1 IN IC410 PIN5: CH2 IN Q404/407: COLLECTOR TV-SX2177 ONLY 20 µs/div 50 V/div 20 µs/div 0.5 ms/div 50 V/div 20 mV/div Q553: COLLECTOR IC410 PIN7: CH2 OUT IC410 PIN12: CH1 OUT TV-SX2177 ONLY 20 µs/div 0.2 ms/div 50 V/div...
  • Page 26 IC402 PIN6: LPF(A) IC402 PIN15: LPF(B) IC701 PIN25: TU-L IC701 PIN24: TU-R 0.2 ms/div 0.5 V/div 0.2 ms/div 0.2 ms/div 0.1 V/div 5 V/div IC402 PIN7: OUTPUT(A) IC402 PIN14: OUTPUT(B) IC701 PIN51: XTAL_IN IC403 PIN2: CH1 IN IC403 PIN19: CH2 IN 0.2 ms/div 50 ns/div 0.2 V/div...
  • Page 27 IC409 PIN11: OUT2 IC409 PIN15: IN2 IC409 PIN3: LPI1 IC409 PIN4: LPO1 IC409 PIN5: BPI1 IC409 PIN12: BPI2 IC409 PIN13: LPO2 IC409 PIN14: LPI2 TV-SA2157 ONLY 0.2 ms/div 0.5 V/div 0.1 µs/div 0.1 V/div 0.2 ms/div 0.2 V/div IC301 PIN34: SCP OUT...
  • Page 28 IC101 PIN1: I IC101 PIN2: D/K Q803: DRAIN IC101 PIN3: COM IC101 PIN5: B/G IC101 PIN4: M 20 µs/div 1 V/div 5 µs/div 20 µs/div 0.5 V/div 1 V/div IC101 PIN11: M IC751 PIN41: XTAL1 IC751 PIN42: XTAL0 20 µs/div 50 ns/div 0.1 V/div 0.5 V/div...
  • Page 29 IC DESCRIPTION IC, TMP87CP38N-1N14 Pin Name Description Pin No. – GND. POWER Power control output (H = ON). SIF A Sound IF SW A (refer to table 1). SIF B Sound IF SW B (refer to table 1). BBE select output. Q SUR Q Surround switching (H = ON).
  • Page 30 TABLE 1 TABLE 2 TUNER VIDEO 1 VIDEO 2 IC201 4.5MHZ(M) 5.5MHZ(BG) 6.0MHZ(I) 6.5MHZ(DK) SEL 1 SIF A SEL 2 SIF B IC, TA1275AZ Pin No. Pin Name Description Y OUT The output pin for Y signal. The pin for controlling the Y processing mode: DL-MODE to VCC: 5.5MHz trap ;...
  • Page 31 IC, TB1240AN AJE-H Pin No. Pin Name Description AFT-OUT The terminal for AFT output and self-adjust out. A-DE-EN Audio output pin. (Not used) – Vcc of PIF circuit. SIF IN SIF input pin. IF GND – GND of PIF circuit. IF IN IF signal input.
  • Page 32 Pin No. Pin Name Description D-GND – GND of digital block. SYNC-IN Input of the synchronous separation circuit. BLK-DET – The terminal to be connected with an Black Det filter. C-IN Input of chroma signals. Y/C-VCC – VCC of Y/C circuit. IF DET OUT Composite video signal and SIF signal detected in IF circuit.
  • Page 33 IC, MSP3417D Pin Name Description Pin No. – Test pin. (Not used) – Not connected. D-CRT-Out1 Digital control output 1. (Not used) D-CRT-Out0 Digital control output 0. (Not used) ADR-SEL C Bus address select. (Connected to 5V) STANDBYQ Standby. (Connected to 5V) C_CL C clock.

  • Page 34: Voltage Chart

    VOLTAGE CHART • AC VOLTAGE : 230V MODE • INPUT : PIN NO. VIDEO IN RF IN STANDBY 1. VIDEO IN (LINE 1 IN) VIDEO : PAL COLOR BAR AUDIO : 1kHz, -8dBm 2. RF IN fp = 471.25MHz, 70dBu, B/G VIDEO : PAL COLOR BAR, 87.5% MOD AUDIO : 1kHz, 60% MOD (30kHz DEV) •...
  • Page 35 MODE MODE PIN NO. VIDEO IN RF IN STANDBY PIN NO. VIDEO IN RF IN STANDBY * 77 * 77 * 77 * 77 * 29 * 29 IC301 Not Used Not Used * 30 * 30 * 29 * 29 * 17 * 17 * 64...
  • Page 36 MODE MODE PIN NO. VIDEO IN RF IN STANDBY PIN NO. VIDEO IN RF IN STANDBY IC401 * 48 * 48 * 49 * 49 * 48 * 48 0 ~ 5 0 ~ 5 * 48 * 48 0 ~ 5 0 ~ 5 * 49 * 49...
  • Page 37 MODE MODE PIN NO. VIDEO IN RF IN STANDBY PIN NO. VIDEO IN RF IN STANDBY Not Used * 67 * 67 IC406<2177> * 68 * 68 * 68 * 68 * 68 * 68 * 67 * 67 IC410 Not Used 2<2177>...
  • Page 38 MODE MODE PIN NO. VIDEO IN RF IN STANDBY PIN NO. VIDEO IN RF IN STANDBY * 33 * 33 * 34 * 34 * 35 * 35 Not Used * 36 * 36 Not Used 22.9 22.9 Not Used * 37 * 37 Not Used...
  • Page 39 MODE MODE PIN NO. VIDEO IN RF IN STANDBY PIN NO. VIDEO IN RF IN STANDBY IC801 * GND is C807 negative side * 71 * 71 * 11 * 11 * 72 * 72 * 73 * 73 305.4 16.0 16.0 12.8...
  • Page 40 MODE MODE PIN NO. VIDEO IN RF IN STANDBY PIN NO. VIDEO IN RF IN STANDBY * 10 * 10 * 10 * 10 * 14 * 14 Q108 * 17 * 17 * 17 * 17 Q301 B<2177> 10.8 10.8 * 10 * 10...
  • Page 41 MODE MODE PIN NO. VIDEO IN RF IN STANDBY PIN NO. VIDEO IN RF IN STANDBY Q554 11.0 11.0 Q409 Q601 * 39 * 39 * 40 * 40 Q411 Q602 * 41 * 41 Q412 * 42 * 42 11.0 11.0 Q603...
  • Page 42 MODE PIN NO. VIDEO IN RF IN STANDBY Q901 * 11 * 11 * 11 * 11 Q902 / Q903 * 10 * 10 * 10 * 10 Q904 * 11 * 11 Q905 / Q906 * 10 * 10 Q908 / Q909 * 10 * 10...

  • Page 43: Mechanical Exploded View

    MECHANICAL EXPLODED VIEW 1 / 1<SA2157> P.C.B P.C.B P.C.B – 43 –...

  • Page 44: Mechanical Parts List

    MECHANICAL PARTS LIST 1 / 1<SA2157> REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION 1 87-054-086-010 BADGE,AIWA 52.5 2 8A-JBC-003-010 PANEL,MAIN SA2157 SH 3 8Z-JBR-005-010 LENS,RC 4 8Z-JBR-006-010 LENS,LED 5 8Z-JBR-004-010 KEY,MAIN 6 8Z-JB4-001-010 CABI,FR 7 8Z-JB4-620-010...
  • Page 45 MECHANICAL EXPLODED VIEW 1 / 1<SX2177> P.C.B P.C.B P.C.B P.C.B P.C.B – 45 –...
  • Page 46 MECHANICAL PARTS LIST 1 / 1<SX2177> REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION 1 87-054-086-010 BADGE,AIWA 52.5 2 8A-JBB-003-010 PANEL,MAIN SX2177 SH 3 8Z-JB4-012-010 PANEL,DUCT R 4 8Z-JBR-005-010 LENS,RC 5 8Z-JBR-006-010 LENS,LED 6 8Z-JB4-211-010 HLDR,DUCT...
  • Page 47 2–11, IKENOHATA 1–CHOME, TAITO-KU, TOKYO 110, JAPAN TEL:03 (3827) 3111 9820572 0251431 Printed in Singapore...

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