Aiwa TV-AS216 Service Manual
  1. Manuals
  2. Brands
  3. Aiwa Manuals
  4. TV
  5. TV-AS216
  6. Service manual
Aiwa TV-AS216 Service Manual

Aiwa TV-AS216 Service Manual

Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
TV-AS216
NH(S)

SERVICE MANUAL

COLOR TELEVISION
• This Service Manual is the “Revision Publishing” and replaces “Simple Manual”
(S/M Code No. 09-01C-450-7T1).
S/M Code No. 09-022-450-7R1

Advertisement

Table of Contents
loading

Related Manuals for Aiwa TV-AS216

Summary of Contents for Aiwa TV-AS216

  • Page 1: Service Manual

    TV-AS216 NH(S) SERVICE MANUAL COLOR TELEVISION • This Service Manual is the “Revision Publishing” and replaces “Simple Manual” (S/M Code No. 09-01C-450-7T1). S/M Code No. 09-022-450-7R1...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS SPECIFICATIONS ................................3 NOTICES BEFORE REPAIRING ............................4 DISASSEMBLY INSTRUCTIONS ..........................5 ~ 9 ELECTRICAL PARTS LIST ............................. 10 ~ 17 CHIP RESISTOR PART CODE ............................18 TRANSISTOR ILLUSTRATION ............................18 WIRING – 1 (MAIN) ................................19 SCHEMATIC DIAGRAM –...

  • Page 3: Specifications

    SPECIFICATIONS Tuner System Frequency synthesized tuner TV System NTSC-M Channel Coverage VHF: 2 to 13 UHF: 14 to 69 CATV: 5A, A-1 to A-5, A to W, W+1 to W+84 Program Memory Antenna Input 75 ohms, unbalanced Picture Tube 21in Screen Size 406 (W) X 305 (H) mm (16 X 12 in.)

  • 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: 7.0 to 9.5 MΩ (500 V/s) wire on the AC1 side, including the power supply Voltage-withstand: 1.5 kV for 1 minute cord.

  • Page 5: Disassembly Instructions

    DISASSEMBLY INSTRUCTIONS 1. REAR CABINET REMOVAL Front cabinet (1) Remove four screws 1 and three screws 2 , 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.
  • 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 High-voltage cable Anode cap arrange it so that no twisting occurs. (See Figure 3-3) 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 Hook shown in Figure 3-7.
  • Page 9 4. NK C.B REMOVAL (1) Disconnect CN904 (CRT GND). Front cabinet (2) Remove the NK C.B in the direction of arrow 1 . (See Figure 4-1) 5. MAIN C.B REMOVAL CN881 (Power Cord) (1) Remove connector (CN406). CN801 (2) Remove connector (CN881). (Degaussing Coil) (3) Remove connector (CN801).

  • Page 10: Electrical Parts List

    Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers. UNIT-NAME ! C REF-NO PARTS-NO PARTS-NAME SUFFIX&MODEL TV-AS216 NH2C MAIN 0001 87-010-405-080 CAP,E 10-50 M 11L SME MAIN 0002 86-ZA1-616-080 C-CAP,U 0.01-50 K B (MUR)
  • Page 11 Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers. UNIT-NAME ! C REF-NO PARTS-NO PARTS-NAME SUFFIX&MODEL TV-AS216 NH2C MAIN 0317 87-010-402-080 CAP,E 2.2-50 M 11L SME MAIN 0318 86-ZA1-616-080 C-CAP,U 0.01-50 K B (MUR)
  • Page 12 Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers. UNIT-NAME ! C REF-NO PARTS-NO PARTS-NAME SUFFIX&MODEL TV-AS216 NH2C MAIN ! O C 0809 87-A12-170-090 CAP,CER 1000P-4K M E KX MAIN 0811 86-ZA1-616-080 C-CAP,U 0.01-50 K B (MUR)
  • Page 13 Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers. UNIT-NAME ! C REF-NO PARTS-NO PARTS-NAME SUFFIX&MODEL TV-AS216 NH2C MAIN O FB 0832 87-003-320-080 F-BEAD,-9.0 FBR07HA121NB-00 MAIN...
  • Page 14 Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers. UNIT-NAME ! C REF-NO PARTS-NO PARTS-NAME SUFFIX&MODEL TV-AS216 NH2C MAIN 0837 87-A30-087-080 C-FET,2SK2158 MAIN 0839 87-A30-087-080 C-FET,2SK2158...
  • Page 15 Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers. UNIT-NAME ! C REF-NO PARTS-NO PARTS-NAME SUFFIX&MODEL TV-AS216 NH2C MAIN 0308 88-108-472-080 C-RES,U 4.7K-1/16W J MAIN...
  • Page 16 Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers. UNIT-NAME ! C REF-NO PARTS-NO PARTS-NAME SUFFIX&MODEL TV-AS216 NH2C MAIN 0608 88-108-222-080 C-RES,U 2.2K-1/16W J MAIN...
  • Page 17 Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers. UNIT-NAME ! C REF-NO PARTS-NO PARTS-NAME SUFFIX&MODEL TV-AS216 NH2C MAIN 0001 8B-JAB-630-010 CONN ASSY,1P TU-PS MAIN...

  • Page 18: Chip Resistor Part Code

    CHIP RESISTOR PART CODE Chip Resistor Part Coding Figure Resistor Code Value of resistor Chip resistor Dimensions (mm) Wattage Type Tolerance Symbol Resistor Code Form 1/16W 1005 0.35 1/16W 1608 0.45 1/10W 2125 1.25 0.45 1/8W 3216 0.55 TRANSISTOR ILLUSTRATION E C B E C B 2SA1037K(R)

  • Page 19: Wiring – 1 (Main)

    WIRING – 1 (MAIN) – 19 –...

  • Page 20: Schematic Diagram – 1 (Main 1 / 2)

    SCHEMATIC DIAGRAM – 1 (MAIN 1 / 2) – 20 –...

  • Page 21: Schematic Diagram – 2 (Main 2 / 2)

    SCHEMATIC DIAGRAM – 2 (MAIN 2 / 2) – 21 –...

  • Page 22: Wiring – 2 (Nk)

    WIRING – 2 (NK) – 22 –...

  • Page 23: Schematic Diagram – 3 (Nk)

    SCHEMATIC DIAGRAM – 3 (NK) – 23 –...

  • Page 24: Ic Block Diagram

    IC BLOCK DIAGRAM – 24 –...
  • Page 25 – 25 –...

  • Page 26: Ic Description

    IC DESCRIPTION IC, M37272M8H-213FP Pin No. Pin Name Description BLK H HSYNC input. BLK V VSYNC input. A MUTE Audio mute. L MUTE Line out mute. Suffix switch. ROTATION – Rotation & suffix. SCN OFF Wakeup LED. HP DET – HP detect.

  • Page 27: Waveform

    WAVEFORM CN901 PIN 1: R D835: ANODE 1 V/div 10 V/div 20 µs/div 10 µs/div CN901 PIN 2: G D836: ANODE 1 V/div 10 V/div 20 µs/div 10 µs/div CN901 PIN 3: B IC1 PIN 1: BLK H 1 V/div 2 V/div 20 µs/div 50 µs/div...
  • Page 28 IC1 PIN 11: SD 2 V/div 50 µs/div IC301 PIN 22: V OUT 20 mV/div 5 ms/div IC301 PIN 32: H OUT 20 mV/div 50 µs/div – 28 –...

  • Page 29: Crt Adjustment

    CRT ADJUSTMENT SET-UP FOR ADJUSTMENT 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 30 (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 31 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 32 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 33: Electrical Adjustment

    ELECTRICAL ADJUSTMENT Following is the procedure for electrical adjustment. 1. Assembling Jig Remote Control 2. Details of Aging Mode Screen 3. Checking and Setting of OP1 to OP5 4. Operating Adjustment Mode 5. List of Electrical Adjustment 5-1 Screen Size and Position Adjustment 5-2 Color and Brightness Adjustment SCREEN FOCUS...
  • Page 34 1. Assembling Jig Remote Control By using the jig remote control, the picture and deflection of the unit can be mostly adjusted. Parts Name : RC–6VT06 Parts Number : 86-LB4-951-010 Preparation : Modify the hidden keys so that they can be pressed easily, using a jig remote control/RC-6VT06 (TV-C142/86-LB4-951-010). 2 modification parts (as shown in the figure below) Starting Service Mode Press TEST key once...
  • Page 35 b. CRT ON Accumulated Time Display The usage time of CRT is accumulated by an hour, and is displayed in the hexadecimal system. Ex. : 1234 = (1x16x16x16)+(2x16x16)+(3x16)+4 = 4660 hours When the time exceeds FFFF (35535 hours), the fixed display, “FFFF” appears. c.
  • Page 36 (1.OP1) INPUT P-DET SEL : SELECTOR IC Selection Chroma IC M1313 Control TA1201 if chroma IC is selected for selector IC. Control M1313 if “1” is selected. MPX : Stereo IC MONO JPN Stereo If “MONO” is selected, set the remote control stereo key and the audio identification display to OFF. INPUT : Input System Number 2 Systems (TUNER, VIDEO) 3 Systems (TUNER, VIDEO1, VIDEO2)
  • Page 37 (3.OP3) WEAK WEAK : Audio Mute Existence at Weak Magnetic Field Audio mute is applied when sync detect is not set. For external input, audio mute does not start even when sync detect is not set. SQZ : Squeeze The item, “High-quality picture wide mode” is not displayed at SQZ = 0. 358 : 358TRAP TB1253 (02-D7) or TA1201 (00-D7) = 0 TB1253 (02-D7) or TA1201 (00-D7) = 1...
  • Page 38 Pattern 1 AV MODE BRIGHT SHARP COLOR CONTRAST TINT NORMAL CINEMA GAME DIMMER Pattern 2 AV MODE BRIGHT SHARP COLOR CONTRAST TINT NORMAL CINEMA GAME DIMMER AFT : AFT Existence (5.OP5) VMUTE PON 2 MOFF VMUTE : Image Mute Image Mute 1 : CONTRAST & BRIGHT MIN Image Mute 2 : BLK ON AM1 : Selection of Audio Mute Method (Audio Mute 1: TA1201 (TA1286) is ATT = 0.) AM2 : Selection of Audio Mute Method (Audio Mute 2: VOLUME output of PWM is “0”.)
  • Page 39 4. Operating Adjustment Mode 1. Press the TEST key once at the aging mode to start the adjustment mode. 2. Press the “CHANNEL I • K” key to switch over the adjustment menus as follows. No adjustment requires for Menu 1. 3.
  • Page 40 4. To go to the next adjustment item or go back to the previous, press the “CHANNEL I • K” key while adjustment value is selected. Channel Channel 5. To go back to the aging mode, press the TEST key twice. 5.
  • Page 41 5-1. Screen Size and Position Adjustment 1-1. HPS Horizontal Size Adjustment [TV / Measuring instrument setting] Input Signal NTSC mono-scope SPEC Right and left horizontal scales are equal. MODE VIDEO 1. Input the LION mark signal by the mono-scope. 2. Use the VOLUME + or - key on the remote control to equalize the right and left horizontal scales.
  • Page 42 [TV / Measuring instrument setting] VSZ Simple Adjustment Input Signal NTSC Crosshatch SPEC Number of squares: 6 to 6.25 MODE VIDEO 1. Input the crosshatch signal by the pattern generator. 2. Use the VOLUME + or - key on the remote control to adjust the number of upper and lower squares to the range specified in the SPEC section.
  • Page 43 2-3. STT Sub-Tint Adjustment [TV / Measuring instrument setting] Input Signal NTSC color bar (FULLFIELD, WHITE 75%) Test Point CN301 3PIN/B SPEC STRAIGHT LINE MODE VIDEO 1. Connect the oscilloscope to the test point. 2. Use the VOLUME + or - key to arrange the tips of waveforms in a STRAIGHT LINE.
  • Page 44 Simple Adjustment [TV / Measuring instrument setting] Adjustment Page No. RCO/R CUT OFF GCO/G CUT OFF BCO/B CUT OFF GDV/G DRIVE BDV/B DRIVE Input Signal NTSC white luster SPEC WHITE MODE VIDEO * Apply aging for approx. 20 minutes before adjustment. * Repeat whole through the steps (1 to 6) for adjustment.
  • Page 45 3-2. PIF VCO (PIF) Adjustment/Image Transfer Frequency Free Running Adjustment [TV / Measuring instrument setting] Input Signal Input level : 90dBuV MODULATE : OFF FREQUENCY : 45.75MHz Test Point INPUT : TU101 11PIN/IF OUTPUT : IC301 44PIN/AFT 2.8 ± 0.2VDC SPEC Adjustment Point L205...
  • Page 46 3-5. WBD / SPE Stereo Audio Separation Adjustment [TV / Measuring instrument setting] Input Signal FREQUENCY : US 11ch (199.25MHz) Test Point IC251 22PIN / R-OUT NTSC US MPX SOUND MODULATOR SPEC MINIWAVE Modulation 300Hz (WBD) MODE TUNER 3KHz (SPE) This adjustment requires NTSC US MPX SOUND MODULATOR.

  • Page 47: Mechanical Exploded View

    MECHANICAL EXPLODED VIEW TV-AS216,NH2C (FileName:TVAS216.EPS) 13/12/12 BJA-A – 47 –...

  • Page 48: Mechanical Parts List

    Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers. UNIT-NAME ! C REF-NO PARTS-NO PARTS-NAME SUFFIX&MODEL TV-AS216 NH2C 87-B00-035-010 BADGE,AIWA 52.5 SIL GRAY 8B-JAN-006-010 COVER, PW 8B-JAA-001-010 CABI,FR AS216 8B-JAN-002-010 GRILLE,SPKR L 8B-JAN-003-010 GRILLE,SPKR R 8B-JAN-005-010 LENS,RC 8B-JAN-004-010 KEY,MAIN 8B-JES-201-010 BOX,SPKR 8B-JAU-621-010 SPKR,8 8OHM 5W (NOM.3W)

  • Page 49: Color Name Table

    COLOR NAME TABLE Basic color symbol Color Basic color symbol Color Basic color symbol Color Black Cream Orange Green Gray Blue Transparent Blue Gold Pink Silver Titan Silver Brown Violet White Transparent White Yellow Transparent Yellow Metallic Blue Light Blue Transparent Green Dark Blue Transparent Orange...

  • Page 50: Accessories Parts List

    Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers. UNIT-NAME ! C REF-NO PARTS-NO PARTS-NAME SUFFIX&MODEL TV-AS216 NH2C PRINTS 8B-JAA-901-010 IB,NH 87-B30-311-010 ADAPTOR,300 75 TSN-02 8B-JAG-951-010 RC UNIT,RC-BVT03 –...

  • Page 51: Other Parts List

    Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers. UNIT-NAME ! C REF-NO PARTS-NO PARTS-NAME SUFFIX&MODEL TV-AS216 NH2C LBL,POP 8B-JAA-970-010 LBL,POP D PAKING 87-B40-329-010 BAG,FOAMED 0.31-1250-900 PAKING 87-066-133-010 BAG,PV 0.04-75-280...
  • Page 52 2-11, IKENOHATA 1-CHOME, TAITO-KU, TOKYO 110-8710, JAPAN TEL:03 (3827) 3111 2000068 9430209 921338...

Table of Contents