Aiwa TV-FA2500 Service Manual
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Aiwa TV-FA2500 Service Manual

Aiwa TV-FA2500 Service Manual

Color television
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TV-FA2500
SH, SHA
SERVICE MANUAL
COLOR TELEVISION
• This Service Manual is the "Revision Publishing" and replaces "Simple Manual"
of TV-FA2500 <SH>, (S/M Code No. 09-009-437-6T1) and TV-FA2500 <SHA>,
(S/M Code No. 09-009-437-6T2).
S/M Code No. 09-00A-437-6R1

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Summary of Contents for Aiwa TV-FA2500

  • Page 1 TV-FA2500 SH, SHA SERVICE MANUAL COLOR TELEVISION • This Service Manual is the “Revision Publishing” and replaces “Simple Manual” of TV-FA2500 <SH>, (S/M Code No. 09-009-437-6T1) and TV-FA2500 <SHA>, (S/M Code No. 09-009-437-6T2). S/M Code No. 09-00A-437-6R1...

  • Page 2: Table Of Contents

    TABLE OF CONTENT SPECIFICATIONS ................................3 ACCESSORIES / PACKAGE LIST ............................3 NOTICES BEFORE REPAIRING ............................4 DISASSEMBLY INSTRUCTIONS ..........................5 ~ 9 ELECTRICAL MAIN PARTS LIST ........................... 10 ~ 13 TRANSISTOR ILLUSTRATION ............................14 WIRING – 1 (MAIN) ................................15 SCHEMATIC DIAGRAM –...

  • Page 3: Specifications

    SPECIFICATIONS Tuner System Frequency synthesized tuner TV System PAL (B/G, H, I, D/K) SECAM (B/G, I, D/K, K1) NTSC(M) Channel Coverage VHF: E2 to E12, R1 to R12 UHF: 21 to 69 CATV: S1 to S41 Program Memory 100 TV stations Antenna Input 75 ohms, unbalanced Picture Tube...

  • Page 4: 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 MΩ to 10 MΩ (500 V/s) wire on the AC1 side, including the power supply Voltage-withstand: 3 kV for 1 min cord.

  • Page 5: Disassembly Instructions

    DISASSEMBLY INSTRUCTIONS 1. REAR CABINET REMOVAL Front cabinet (1) Remove eight screws 1, then remove the rear cabinet in the direction of the arrow. (See Figure1-1) Rear cabinet Figure 1-1 2. HIGH-VOLTAGE CAP (ANODE CAP) REMOVAL 2-1. Cautions before Removing Anode cap Discharge the anode voltage (1) The anode voltage is not discharged completely from the...
  • Page 6 (5) Push the anode cap with your thumb in the direction of arrow 1 as shown in the figure, then lift the cap in the direction of arrow 2 to release the hook on one side. (See Figure 2-3) Anode cap Hook Hook Figure 2-3...
  • Page 7 (3) Eliminate twisting, etc. of the high-voltage cable and arrange it so that no twisting occurs. (See Figure 3-3) High-voltage cable Anode cap Caution : If the cable is not arranged correctly, the anode cap could turn and cause an installation defect. Figure 3-3 (4) Turn over the rubber cap symmetrically on the left and right.
  • Page 8 (6) Apply the hook on one side to the anode button as shown on the figure. (See Figure 3-6) Caution : Check that the hook is held securely. (7) Apply the hook on the other side to the anode button as shown in Figure 3-7.
  • Page 9 4. NK C.B. (PWB, NK) REMOVAL (1) Disconnect CN903 (CRT GND). Front cabinet (2) Disconnect CN901, CN902 (3) Remove the NK C.B. in the direction of arrow 1. (See Figure 4-1) CN801 (Power Cord) 5. MAIN C.B (PWB, MAIN) REMOVAL CN802 (1) Remove connector (CN408).

  • Page 10: Electrical Main Parts List

    ELECTRICAL MAIN PARTS LIST REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION 87-010-405-080 CAP, ELECT 10-50V 87-018-134-080 CAPACITOR,TC-U 0.01-16 87-A21-433-010 IC,KS24C041I 87-010-263-080 CAP, ELECT 100-10V 87-017-804- - 010 IC,BU4052BC 87-018-119-080 CAP, CER 100P-50V 87-A21-723-010 IC,TB1240AN AJE-H 87-010-405-080 CAP, ELECT 10-50V 87-A21-166-010...
  • Page 11 REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION C340 87-018-134-080 CAPACITOR,TC-U 0.01-16 CF207 87-008-575-080 FLTR,CFSFSH5.5MCB C341 87-018-134-080 CAPACITOR,TC-U 0.01-16 CF208 87-008-576-080 FLTR,CFSFSH6.5MCB C344 87-010-263-080 CAP, ELECT 100-10V 87-A60-446-010 CONN,7P V TID-X C501 87-018-126-080 CAP,TC-U 390P-50 B CN601 87-099-762-010 CONN,5P TBL-P V BOSS...
  • Page 12 REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION R807 87-A00-639-090 RES,CEM 0.15-5W K BPR C484 87-A11-148-080 CAP,TC U 0.1-50 Z F R808 87-A00-573-090 RES,CEM 0.33-5W J MPC71 C493 87-010-112-080 CAP, ELECT 100-16V R816 87-A00-170-090 RES,M/F 82K-3W J RSF(S) C498 87-010-402-080 CAP, ELECT 2.2-50V...
  • Page 13 REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION L904 87-005-608-080 COIL,33UH J LAV35 C658 87-016-217-080 CAP,E 4.7-160 L951 87-005-482-080 COIL,56UH J FLR50 C659 87-010-976-080 CAP,CER 1000P-500 B L952 87-005-481-080 COIL,47UH J FLR50 C660 87-018-131-080 CAP, CER 1000P-50V L981 87-003-146-080 COIL,15UH J LAL02...

  • Page 14: 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 B C E B C E B C E 2SC1740SRS 2SD2580 2SD2531 2SC5147D DTC144ES 2SC4793 2SA933SRS 2SA1837 2SA1175FE...

  • Page 15: Wiring - 1 (Main)

    WIRING – 1 (MAIN) – 15 –...

  • Page 16: Schematic Diagram - 1 (Main)

    SCHEMATIC DIAGRAM – 1 (MAIN) – 16 –...

  • Page 17: Wiring - 2 (Audio : Sh)

    WIRING – 2 (AUDIO : SH) – 17 –...

  • Page 18: Wiring - 3 (Audio : Sha)

    WIRING – 3 (AUDIO : SHA) – 18 –...

  • Page 19: Schematic Diagram - 2 (Audio : Sh,Sha)

    SCHEMATIC DIAGRAM – 2 (AUDIO : SH,SHA) – 19 –...

  • Page 20: Wiring - 4 (Nk : Sh)

    WIRING – 4 (NK : SH) – 20 –...

  • Page 21: Wiring - 5 (Nk : Sha)

    WIRING – 5 (NK : SHA) – 21 –...

  • Page 22: Schematic Diagram - 3 (Nk : Sh,Sha)

    SCHEMATIC DIAGRAM – 3 (NK : SH,SHA) – 22 –...

  • Page 23: Wiring - 6 (Pin : Sh)

    WIRING – 6 (PIN : SH) – 23 –...

  • Page 24: Wiring - 7 (Pin : Sha)

    WIRING – 7 (PIN : SHA) – 24 –...

  • Page 25: Schematic Diagram - 4 (Pin : Sh,Sha)

    SCHEMATIC DIAGRAM – 4 (PIN : SH,SHA) – 25 –...

  • Page 26: Ic Block Diagram

    IC BLOCK DIAGRAM – 26 –...
  • Page 27 – 27 –...

  • Page 28: Ic Description

    IC DESCRIPTION IC, TMP87CP38N-1N15 THAI<SH> / TMP87CP38N-1N14<SHA> 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.
  • Page 29 TABLE 1 TABLE 2 TUNER VIDEO 1 VIDEO 2 IC201 4.5MHZ 5.5MHZ 6.0MHZ 6.5MHZ SEL 1 PIN10 SEL 2 PIN9 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 30 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. – Vcc of PIF circuit. SIF IN SIF input pin. (Not used) IF GND – GND of PIF circuit. IF IN IF signal input.
  • Page 31 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 32: Waveform

    WAVEFORM 1. MAIN C.B (VIDEO SECTION) TU101 PIN11: IF1 IC301 PIN2: A-DE-EN 500 µs/div 100 ns/div 500 mV/div 200 mV/div IC301 PIN53: SIF IC301 PIN 31: SYNC OUT 50 µs/div 500 ns/div 20 mV/div 2 V/div IC301 PIN47: IFDET-OUT IC301 PIN32: H-OUT IC301 PIN30: FBP-IN 20 µs/div 5 V/div...
  • Page 33 IC301 PIN23: V-NFB IC301 PIN22: V-RAMP IC1 PIN31: X IN IC1 PIN32: X OUT 10 ms/div 1 ms/div 2 V/div 5 V/div 10 ms/div 1 ms/div 2 V/div 5 V/div IC301 PIN18: R OUT IC301 PIN19: G OUT Q912 EMITTER: CVBS IC301 PIN20: B OUT 20 µs/div 5 V/div...
  • Page 34 26 CN601 PIN5: V+ CN601 PIN4: V- CN601 PIN2: H- 5 ms/div 20 V/div 20 µs/div 5 ms/div 5 V/div 100 V/div Q602 COLLECTOR CNA802 PIN5: HEATER 50 µs/div 20 µs/div 50 V/div 10 V/div SECAM INPUT IC301 PIN39: Y-IN IC301 PIN38: R-Y.
  • Page 35 CNA501 PIN1: V- CNA501 PIN2: IV.DET 5 ms/div 5 V/div 5 ms/div 2 V/div – 35 –...
  • Page 36 2. PIN C.B 3. MAIN C.B (POWER SUPPLY SECTION) IC651 PIN5 IC651 PIN6 IC801 PIN1 10 ms/div 2 V/div 10 µs/div 10 ms/div 2 V/div 2.5 V/div Q651 BASE Q651 COLLECTOR IC801 PIN2 10 ms/div 200 mV/div 10 µs/div 10 ms/div 10 V/div 2.5 V/div D652 CATHODE...
  • Page 37 4. AUDIO C.B C401 PIN15: L IN IC401 PIN7: L OUT 200 µs/div 100 mV/div 200 µs/div 100 mV/div IC410 PIN2: CH1 IN IC410 PIN12: CH1 OUT 500 µs/div 200 mV/div 500 µs/div 2 V/div – 37 –...
  • Page 38 5. NK C.B (VM SECTION) CN951 PIN3: Y OUT CN952 PIN1: VM 20 µs/div 20 µs/div 1 V/div 10 V/div Q982 EMITTER CN952 PIN1: VM Q952 BASE 10 µs/div 200 mV/div 10 µs/div 500 ns/div 500 mV/div 10 V/div Q953 BASE 10 ms/div 1 V/div Q955 EMITTER...

  • Page 39: Voltage Chart

    VOLTAGE CHART Test condition AC Voltage: 230V Signal input: 1. VIDEO IN (LINE 1 IN) VIDEO : PAL COLOR BAR AUDIO : 1KHz -8dBm 2. RF IN fp = 471.25MHz, 60dBµ; P/S = 10dB Video : PAL COLOR BAR Audio : 1KHz, 30KHz DEV Setting: VOLUME: 32 SOUND EFFECT: DEFAULT (SUPER BASS: ON, BASS/TREBLE/BALANCE: CENTER, Q SURROUND/BBE: OFF)
  • Page 40 MODE MODE REF NO. VIDEO IN TUNER STANDBY REF NO. VIDEO IN TUNER STANDBY IC101 IC501 12.3 12.3 24.2 24.4 24.3 24.3 IC801 16.7 16.7 13.2 IC802 IC803 12.1 12.1 MODE REF NO. VIDEO IN TUNER/PAL TUNER/SECAM STANDBY IC302 2.83 2.65 2.55 2.65...
  • Page 41 MODE MODE REF NO. VIDEO IN TUNER/ TUNER/ TUNER/ STANDBY REF NO. VIDEO IN TUNER STANDBY PAL CB NTSC CB SECAM CB IC804 IC301 IC901 IC902 0.77 0.77 0.77 0.77 – 41 –...
  • Page 42 2. AUDIO C.B MODE MODE REF NO. STANDBY REF NO. STANDBY IC403 IC401 MODE NAME STANDBY Q401 Q402 Q404 1.26 Q407 1.26 IC402 Q408 11.7 IC404 Q409 IC409 IC410 28.5 14.4 1.83 29.5 30.3 14.4 – 42 –...
  • Page 43 3. NK C.B MODE NAME STANDBY MODE Q951 NAME STANDBY Q901 Q952 Q902 Q953 1.25 Q903 Q954 Q904 Q955 Q905 Q956 118.3 Q906 118.6 118.9 Q957 Q907 Q981 -0.4 Q908 1.24 Q982 4. PIN C.B MODE REF NO. STANDBY Q651 0.53 MODE REF NO.

  • Page 44: Adjustment

    ADJUSTMENT SET-UP FOR ADJUSTMENT * Face the CRT to east direction when adjusting. 1. CRT ADJUSTMENT Because the video signal output from a pattern generator is used as 1-1. Precautions the adjustment signal input during adjustment, the video signal (1) Receive the white raster signal, and then perform aging for at output from the pattern generator must conform with the least 20 minutes.
  • Page 45 (2) Beam convergence adjustment (4-pole magnet) (3) Beam convergence adjustment (6-pole magnet) With a 4-pole magnet align the G beam with the already aligned Align the R beam with the B beam. The G beam does not R/B beam. move with this adjustment. (magenta) (magenta) (white)
  • Page 46 1-3. Beam Landing Adjustment (1) Receive the green raster signal from the pattern generator. As there is occurrence of convergence distortion after (2) Loosen the magnet lock screw, and shift the magnet assembly completing the landing adjustments, be sure to carry out backward (toward the neck).
  • Page 47 1-4. Beam Center Convergence Adjustment 1-5. The Surrounding Convergence Adjustment Perform this adjustment after completion of adjustment 1-4. Make adjustments on the convergence with 4-pole and 6-pole magnets. Operate each magnet in relation to the electron beam as (1) Shake the deflecting yoke up, down to the right and left, and shown in Figs.
  • Page 48 Setting of IIC BUS Data This model is designed with the ability to adjust most parts of the image projection and deflection system by using the jig remote controller. Preparations : • Modify the hidden keys on the RC-6VT06 jig remote controller (TV-C142/86-LB4-951-010) so that they can easily be pressed.
  • Page 49 Contents of Aging Mode : 1. Release “Auto Power Off” function Release “Auto Power Off” function when no input is supplied. Use this mode for warming up (aging) during CRT adjustment. 2. AFT S-curve status indication The condition of AFT S-curves are indicated by “IN” for suitable tuning, “HIGH”...
  • Page 50 Adjustment Mode Operation Method : 1. Return to the aging display by pressing the “TEST” key and press “CHANNEL” key to display the adjustment menu screen. – 50 –...
  • Page 51 The menus from No.0 to 105 inclusive of PAGE 1 to 3 serve as the “Adjustment Menu”. (Refer to the following tables) Reference Reference Reference Menus Menus Menus Values Values Values CONT BRIGHT MAX SELF ADJ – COLOR CONT MIN ID SENSITIV –...
  • Page 52 Menu screen adjustment: • Operate after inputting the following initial figures when replacing EEP ROM. These initial figures are only for reference purposes and meant for rough adjustment. • Check the condition and adjust the area where the general repair is carried out. Sample Indication for Adjustment Menu No.
  • Page 53 PAGE 1 1-1. H POS Horizontal Positioning Adjustment Adjustment Menu No. 14 (Page 1-1) Input signal : Crosshatch Measuring instrument : Pattern generator / PAL • Use the volume keys on the jig remote controller to adjust the dot mark in the centre of crosshatch screen to the exact centering position by allocating an equal number of squares on the left and right side of the dot.
  • Page 54 1-4. OSD V OSD Vertical Positioning Adjustment Adjustment Menu No. 94 Input signal : Crosshatch Measuring instrument : Pattern generator / PAL • Use the “CHANNEL” key to scroll through the adjustment menu screen and select No.94. • Using the volume keys on the jig remote controller, adjust A and B on both top and bottom shown in the OSD screen to be equidistant from the screen edges.
  • Page 55 PAGE 2 White Balance Adjustment : Adjustment Menu No. 19-24 (PAGE 2 - 1 to 2 - 5) *User’s picture quality will be cleared when the adjustment menu screen appears. Input signal : White raster Contents of Adjustment : 1. R CUT OFF Contents of Adjustment : 2.
  • Page 56 PAGE 3 3-1. SECAM B - Y SECAM Video, Chroma Adjustment Adjustment Menu No. 25 (Page 3-1) This model does not support this function. Set the data value to “00”. (Fig. 3-1) SECAM B-Y Fig. 3.1 3-2. SECAM R - Y SECAM Video, Chroma Adjustment Adjustment Menu No.
  • Page 57 3-5. V SIZE Vertical Size Adjustment Adjustment Menu No. 29 (Page 3-5) Input signal : Crosshatch Measuring instrument : Pattern generator / PAL • Use the volume keys on the jig remote controller and adjust A to position the dot mark in the center to the exact vertical centre of the crosshatch pattern on the screen and regularize the squares of the crosshatch pattern.
  • Page 58 4-2. SUB COLOR Sub-color Adjustment Adjustment Menu No. 1 Input signal : Color bar (VIDEO IN) Measuring instrument : Pattern generator / PAL Test point : CN9013PIN B • Use the “CHANNEL” keys to scroll through the adjustment menu and set to No. 38. •...

  • Page 59: Mechanical Exploded View 1 / 1

    MECHANICAL EXPLODED VIEW 1 / 1 – 59 –...

  • Page 60: Mechanical Parts List 1 / 1

    DESCRIPTION 1 8Z-JE7-006-010 LENS,RC 2 8Z-JE7-005-010 LENS,LED 3 8Z-JE7-003-010 KEY,MAIN 4 8A-JEJ-003-010 PANEL,MAIN SH 5 8Z-JE7-008-010 BADGE,AIWA ST 52.5 6 8A-JE5-012-010 CABI,FR NH ASSY 7 8Z-JE5-206-010 W-P,10.5-20-1 8 8Z-JB3-620-010 SPKR,6*12 80HM 15W 9 83-JT1-217-010 SPR-E,EARTH 10 8A-JEF-625-010 DGC,25 15OHM VRK 11 8A-JE5-609-010 CRT,A60LST 197X04<SH>...
  • Page 61 2–11, IKENOHATA 1–CHOME, TAITO-KU, TOKYO 110, JAPAN TEL:03 (3827) 3111 2000068 9630472 Printed in Singapore...

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