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AIWA  VX-T1480

M101

S5-96P-480-010

MOTOR, LOAD(1)

1

M2001

S5-94J-980-040

CAPSTAN DD UNIT SP39BD   1

M2003

S5-89V-110-040

MICRO MOTOR EP14BA

1

R1042

87-029-165-060

RES, FUSE 2.7 - 1W

UN4001

S4-841-1B5-000

CYLINDER UNIT ASS’Y

1

IC1002

S0-7S0-902-9A0

JC, OEC9029A

TU6001

S1-447-070-200

TUNER UHF UE25-B01

R445

87-022-304-010

RES, M/O 1.5K - 3W

R446

87-022-304-010

RES, M/O 1.5K - 3W

R447

56-158-268-0J0

RES, FUSE 68 - 1/2W

R449

S5-K2C-E8R-2K0

RES, CEM 8.2 - 7W

R450

87-029-160-010

RES, FUSE 2.2 - 1W

R452

S6-358-11R-8J0

RES, FUSE 1.8 - 1W

R501

S5-K20-E2R-2K0

RES, CEM 2.2 - 7W

R505

S3-X28-B33-3J0

R, M/O 33K - 3W

R508

S3-X28-D47-3J0

RES, M/O 47K - 5W

R512

S3-U18-182-2J0

RES, M/O 8.2K - 1W

R513

87-022-623-010

RES, M/O 15 - 2W

R517

S6-148-12R-2J0

RES, FUSE 22 - 1W

R531

S3-X18-AR5-6J0

RES, M/O 0.56 OHM

R538

S0-11K-215-5J0

RES, 1.5M - 1/2W

R598

87-029-374-010

RES, FUSE 47 - 1/4W

C502

S0-JBB-07H-3K0

CAP, CER 0.0022 - 2KV

C503

S0-JBB-07H-3K0

CAP, CER 0.0022 - 2KV

C505

S2-222-B22-4K0

CMP, 0.22 - 250V

C506

S2-222-B10-4K0

CMP, 0.1 - 250V

C515

S0-E7T-B01-0M0

CAP, E 1-160V

C529

SB-393-0MH-3M0

CAP, CER 0.0022 - 250V

C530

SB-393-0MQ-2K0

CAP, CER 470PF - 250V

C533

SB-393-0M1-2K0

CAP, CER 100PF - 250V

C546

SB-393-0MH-3M0

CAP, CER 0.0022 - 250V

D411

S2-8T1-0EL-S60

DIODE, 10ELS6TA1

D501

S2-BTR-M11-C00

DIODE, RM11C

D502

S2-BTR-M11-C00

DIODE, RM11C

D503

S2-BTR-M11-C00

DIODE, RM11C

D504

S2-BTR-M11-C00

DIODE, RM11C

D508

S2-8TE-QS0-400

DIODE, 11EQS04TA1

D509

S2-8T1-0EL-S60

DIODE, 10ELS6TA1

D510

S2-811-5DF-600

DIODE,1SDF6-FC

D512

S2-8T1-DQ0-900

DIODE, 21DQ09-TA2B1

D519

S2-8T1-DQ0-900

DIODE, 21DQ09-TA2B1

IC401

S0-5SD-840-300

IC, TA8403K

IC501

S0-ED0-460-500

lC, TDA4605-3

IC502

S0-Q09-780-500

IC, NJM7805FD

IC506

S0-025-004-500

PHOTO, COUPLER TLP621 (GR)

Q406

SD-UQ0-208-900

TR, 2SD2089

Q500

S4-1FK-239-700

TR, 2SK2397 - 01

Q502

SA-3T1-371-A00

TR, 2SA1371

Q503

SC-300-416-000

TR, 2SC4160

Q511

SB-WT0-092-600

TR, 2SB926 (S,T)

Q516

SD-70D-239-600

TR, 2SD2396

L501

S2-9K0-000-010

COIL, LINE FILTER RB-20871

L502

S2-9K0-000-010

COIL, LINE FILTER RB-20871

FB401

S4-321-300-9F0

TR, 3213009

T501

S4-813-502-2W0

TR, 8135022W

F501

S8-0PT-040-020

FUSE, 4A-250V T

F502

S8-0PT-1R6-020

FUSE, 21801.6

RY501

S5-600-101-140

RELAY SDT-SS-109DM

ICP502

S8-3PC-030-020

MICRO FUSE, 251003

ICP503

S8-3PC-050-020

MICRO FUSE, 251005

ICP504

S8-3PC-030-020

MICRO FUSE, 251003

ICP505

S8-3PC-010-020

MICRO FUSE, 251001

R802

87-A00-164-060

R, M/O 12K - 2W

R805

87-A00-164-060

R, M/O 12K - 2W

R810

87-A00-164-060

R, M/O 12K - 2W

Q804

89-314-736-080

TR, 2SC1473A - TA

Q805

89-314-736-080

TR, 2SC1473A - TA

Q806

89-314-736-080

TR, 2SC1473A-TA

J801

S6-6X1-200-140

SOCKET, CRT HPS320

SW501

S5-302-050-010

SW, PLUSSDDFC3O56A

L503

S2-8Q1-400-180

COIL, DEGAUSS 8Q140018

CD501

S2-066-358-070

CORD, AC 1206635807

V801

S9-8Y1-404-640

CRT, W/DY14” A34JXV70X06N

Disassembly Instructions

1-4: LOCATION OF PRINTED CIRCUIT
BOARDS
(Refer to Fig. 1-4)
CAUTION: BEFORE ATTEMPTING TO
REMOVE OR REPAIR ANY PCB, UNPLUG
THE POWER CORD FROM THE AC SOURCE.

Fig. 1-4

1-5: MAIN PCB (Refer to Fig. 1-5)
1. Remove the 5 screws (1).
2. Unlock the 2 supports (2) and remove the TV

Main PCB in the direction of the arrow.

Fig. 1-5

1-6: TOP SHIELD PLATE AND BOTTOM
SHIELD PLATE
(Refer to Fig. 1-6)

1. Remove the 4 screws (1).
2. Remove the Top Shield Plate in the direction

of arrow (A).

3. Remove the screw (2).
4. Remove the Bottom Shield Plate in the

direction of arrow (B).

Fig. 1-6

1-7: FRONT LOADING UNIT 6, CHASSIS
SECTION, JACK PLATE AND VCR MAIN PCB
(Refer to Fig. 1-7-A)

1. Remove the screw (1).
2. Remove the screw (2).
3. Remove the screw (3).
4. Remove the Front Loading Unit 6 in the

direction of arrow (A).

5. Remove the 3 screws (4).
6. Remove the 2 screws (5).
7. Remove the Chassis Section in the direction

of arrow (B).

8. Remove the 2 screws (6).

9. Unlock the 2 supports (7) and remove the

Jack Plate in the direction of arrow (C).

10.Unlock the support (8) and remove the VCR

Main PCB.

NOTE
When installing the Front Loading Unit 6, align
the timing marks and pull the Cassette Holder
Ass’y in the direction of arrow (D). (Refer to Fig.
1-7-B)

Fig. 1-7-A

Fig. 1-7-B

2. REMOVAL OF DECK PARTS

2-1: LINK GEAR (R) / CAM GEAR (Refer to
Fig. 2-1)

1. Unlock the support (1).
2. Remove the BOT Sensor Cover and BOT

Reflector.

3. Unlock the 3 supports (2).
4. Remove the Side Bracket R2 and Spring

Earth.

5. Remove the Flap Lever, Link Gear (R), Cam

Gear Ass’y and BOT Lever.

NOTES
When installing the Link Ass’y 2 and Link Gear
(R), align the timing Marks.

Fig. 2-1

2-2: TOP BRACKET / TAPE PIECE GUIDE
(Refer to Fig. 2-2)

1. Unlock the 2 supports (1).
2. Remove the Tape Piece Guide.
3. Unlock the 4 supports (2).
4. Remove the Top Bracket.
5. Remove the Side Bracket R1 and Side

Bracket L.

6. Unlock the support (3).
7. Remove the Joint Gear.
8. Remove the Bracket R Spring.

Fig. 2-2

2-3: LINK ASS’Y 2 (Refer to Fig. 2-3)
1. After removing in the direction (A) of Link

Ass’y 2, remove the Link Ass’y 2 in the
direction (B).

NOTE
Install the (B) first, then install the (A).

Fig. 2-3

2-4: CASSETTE SIDE R (Refer to Fig. 2-4)
1. Unlock the 2 supports (1).
2. Remove the Cassette Side R.
3. Remove the Pack Spring.

4. Remove the Locker Spring.
5. Unlock support (2).
6. Remove the Locker R.

Fig. 2-4

2-5: CASSETTE SIDE L (Refer to Fig. 2-5)
1. Unlock the 2 supports (1).
2. Remove the Cassette Side L.
3. Remove the Pack Spring.
4. Remove the Locker Spring.
5. Unlock the support (2).
6. Remove the Locker L.

Fig. 2-5

2-6: BRAKE BRACKET (Refer to Fig. 2-6)
1. Remove the Main Brake Spring, S-S Brake

Spring, Joint Arm Spring and T-S Brake
Spring.

2. Remove the 2 screws (1).
3. Remove the screw (2).
4. Remove the Brake Bracket.
5. Remove the Sub Brake S, Sub Brake T, Main

Brake S Ass’y and Main Brake T Ass’y.

6. Remove the Joint Arm.
7. Remove the Reflector LED 2.

Fig. 2-6

2-7: TENSION BAND (Refer to Fig. 2-7)

1. Remove the Tension Arm Spring 1.
2. Remove the Tension Arm Spring 2.
3. Remove the Tension Adjust.
4. Remove the Tension Arm Ass’y.
5. Remove the Tension Band Ass’y.
6. Remove the Tension Lever 2 Ass’y.

Continues on next page.

Recommended Safety Parts

Item

Part No.

Description

Summary of Contents for VX-T1480

Page 1: ...FORE ATTEMPTING TO REMOVE OR REPAIR ANY PCB UNPLUG THE POWER CORD FROM THE AC SOURCE Fig 1 4 1 5 MAIN PCB Refer to Fig 1 5 1 Remove the 5 screws 1 2 Unlock the 2 supports 2 and remove the TV Main PCB...

Page 2: ...he Polyslider Washer 1 2 Remove the Center Pulley 3 Remove the Polyslider Washer 2 4 Remove the Center Pulley Spring 5 Remove the Idler Arm Ass y 6 Remove the 2 Polyslider Washers 3 7 Remove the Clutc...

Page 3: ...adjust the tension post position Refer to item 1 2 for the tension arm install the cassette type torque tape JG100A and set to the PLAY mode 2 Confirm that the left hand side tension value of the torq...

Page 4: ...ng press both VOL DOWN key on the set and the channel button 4 on the remote control simultaneously and adjust the Tracking button until the arising to the down of the Head Switching Pulse becomes 6 5...

Page 5: ...ton 1 on the remote control 4 Press the VOL UP DOWN button on the remote control until the white 25 is slightly brilliant 4 15 SUB COLOR TV 1 Receive the color bar pattern RF Input 2 Connect the oscil...

Page 6: ...AIWA VX T1480 OVD 5 Deck Alternative Parts Cont d...

Page 7: ...AIWA VX T1480 OVD 5 Deck Alternative Parts Cont d Earphone Diagram...

Page 8: ...0 S5 OP6 004 860 PULLEY LDM 5 1 361 S5 OP8 002 610 SPR C PULLEY 1 362 S5 OA2 000 650 ARM IDLER ASSY 1 363 S5 OP8 002 700 SPR LEVER TENSION 1 364 S5 OA2 000 640 CLUTCH GEAR T ASSY 1 365 S5 OA2 000 630...

Page 9: ...AIWA VX T1480 Chroma Diagram...

Page 10: ...AIWA VX T1480 CRT Diagram...

Page 11: ...AIWA VX T1480 Deflection Diagram...

Page 12: ...AIWA VX T1480 Microcontroller Diagram...

Page 13: ...AIWA VX T1480 Head Amp Diagram...

Page 14: ...AIWA VX T1480 IF PCB Diagram...

Page 15: ...AIWA VX T1480 Operations Diagram 1...

Page 16: ...AIWA VX T1480 Operations Diagram 2 Audio Amp Diagram...

Page 17: ...AIWA VX T1480 Power Diagram TV...

Page 18: ...AIWA VX T1480 Power Diagram VCR...

Page 19: ...AIWA VX T1480 Teletext Diagram...

Page 20: ...AIWA VX T1480 Y C Diagram...

Page 21: ...AIWA VX T1480 Tuner Audio Diagram...

Page 22: ...AIWA VX T1480 Waveforms...

Page 23: ...AIWA VX T1480 Wiring Diagram...

Page 24: ...AIWA VX T1480 System Control Servo Diagram...

Page 25: ...IC502 DC7 7V Does RY501 work Check P CON 5V line Check IC502 D511 and D512 Check IC502 Check pins 62 and 63 of IC101 and peripheral circuit Check IC506 Q507 and the peripheral circuit Check Q504 RY50...

Page 26: ...RN ON 2 Is CP810 inserted Is the voltage at C507 about 160V Insert CD810 Check the circuit between F501 C507 and R501 Check IC501 and the peripheral circuit Yes Yes Yes Yes No No No No Replace F501 Re...

Page 27: ...peripheral circuit Check Q353 and peripheral circuit Is the voltage at pin 29 of IC601 changed from DC10 8V to DC9 9V when pressing VOLUME UP or DOWN key Yes Yes Is the voltage at pin 1 corrector of...

Page 28: ...V line Adjust Brightness and Contrast Is the voltage at pin 17 of IC601 DC9V Is the voltage at pin 41 of IC601 DC5V Is the voltage at pin 8 38 of IC601 DC5V Is the signal at pin 12 13 and 14 of IC601...

Page 29: ...put Is the waveform 12 13 and 14 of IC601 normal Is the waveform at pin 42 of IC601 normal Is the waveform at pin 40 of IC601 normal Is the color signal received Is the color set to minimum NO COLOR R...

Page 30: ...it of IC601 Check peripheral circuit of IC101 Check R452 and FB401 Is the normal signal at pin 4 of IC 401 input Is the normal signal at pin 38 of IC101 output Is the voltage at pin 6 of IC402 DC25V C...

Page 31: ...heck TAPE LOADIG LOADING BELT MODE SWITCH DD MOTOR and CYLINDER MOTOR Does it Power off in about 3 seconds Yes No Check REEL SENSOR and REEL BELT Does it Power off in about 6 seconds Yes No Check REEL...

Page 32: ...Replace CYLINDER MOTOR Check R1059 R1080 and R1058 Replace IC1001 No Yes Yes No No Yes Is the voltage at pin 6 of CP1002 about DC13V In playback is the voltage at pin 3 of CP1002 about DC1 2V In play...

Page 33: ...o Yes Is AUDIO HEAD scratched Does pin 15 of IC1001 output a 3 0Vp p square wave 3 0V Check AUDIO BLOCK In playback is the voltage at pin 17 of CP1002 about DC1 6V In playback is the voltage at pin 14...

Page 34: ...MOTOR When a cassette is inserted is the voltage at pin 49 of IC1001 5V When a cassette is inserted is the voltage between pins 1 and 2 of CP1002 When cassette is not inserted is EOT BOT PULSE at EMMI...

Page 35: ...FRONT LOADING GEARS Defective CASSETTE or FRONT LOADING UNIT In another cassette tape does the same problem appear In covering the infrared sensor is pin 2 and 3 of IC1001 5V When inserting cassette i...

Page 36: ...of CP1002 and peripheal circuit Check pin 45 of IC1001 lines change IC1001 Check DECK MECHANISM Is the voltage changing at pin 14 of CP1002 Is the voltage changing at pin 12 of CP1002 when you press...

Page 37: ...k R1059 R1080 R1058 and D1003 No Yes Does PG PULSE signal appear at pin 13 of IC1001 No No No Yes Is the voltage at pin 6 of CP1002 UNREG 12V Does DC5V PULSE signal appear at pin 44 of IC1001 Is the v...

Page 38: ...age at pin 3 of CP1002 1 2V In playback is the voltage at pin 3 of CP1002 about 1 2V When sloeing CYLINDER is the voltage 3 8V No Yes Replace CYLINDER MOTOR Replace IC1001 No No Yes Yes 5V Is FG Pulse...

Page 39: ...k IC4101 and CYLINDER UNIT Check CONTROL HEAD No Yes By manual tracking does the DC level at pin 6 of CP4001 change In auto tracking is the voltage at pin 5 of IC1001 more than DC1 85V No No Does the...

Page 40: ...ROTATING No Yes Replace CAPSTAN BELT No Check REEL SENSOR and that the voltage at pin 10 of CX1003 is DC5V No Does CAPSTAN DD MOTOR rotate Is CAPSTAN BELT OK Yes Does REEL SENSOR PULSE signal appear...

Page 41: ...No Adjust GUIDE POST height Adjust PG SHIFTER No Does tracking noise appear in the picture Yes Yes Are GUIDE POSTS the right height No Check PB Y circuit Is PG SHIFTER Adjustment 6 5H Yes By adjustin...

Page 42: ...Yes Is the voltage at pins 12 28 and 54 of IC4001 5V No Yes Check IC4002 and the peripheral cicuit No Replace IC4001 Replace IC4001 No No Yes Is there Y signal at pin 27 of IC4001 and there CHROMA si...

Page 43: ...7 and the peripheral circuit Replace IC4002 Does FM ENVELOPE appear at TP4002 Does CHROMA signal appear at pin 27 of IC4001 Does COMPOSITE signal appear at pin 16 of IC4002 Does COLOR BURST signal app...

Page 44: ...p p Is there FM signal at pin 11 of IC4001 140mVp p No Yes Replace IC4001 No Replace IC4002 No Yes Is VIDEO waveform at pin 6 of IC4001 over 500mVp p and are there any noise Yes Yes Check J4501 Is VID...

Page 45: ...in 29 of IC4001 No No No No Replace IC4101 Check IC4101 and peripheral circuit Replace J4501 Check VIDEO input circuit Does VCR signal appear at pin 53 of IC4002 Does FM signal appear at pin 8 of CP40...

Page 46: ...igh No No Does AUDIO signal appear at pin 7 of IC5001 Check AUDIO HEAD for debris of stains Check that the connector from AUDIO HEAD is fully inserted to CP4106 Replace IC 5001 If the pin 52 of IC1001...

Page 47: ...15 of CP1002 5V In playback is the voltage at pin 14 of CP1002 2 5V Replace IC1001 Does DD MOTOR rotate now If not replace DD MOTOR Check pins between 45 and 47 of IC1001 and peripheral circuit Replac...

Page 48: ...cuit Is there AUDIO signal at pin 14 of IC5001 Check the lead wire and connector to A C HEAD Check the circuit between audio out of Tuner and pin 10 of IC5001 No No Yes Yes No No No Yes Yes Yes Is the...

Page 49: ...ETTE IN AND DOWN UNIT HAS NO FUNCTIONS No Yes Yes No Check Operation PCB Does VCR operate with the remote control Check IC1001 Check LOADING MOTOR MODE SWITCH and the peripheral parts Does mode indica...

Page 50: ...CYLINDER UNIT and IC4101 circuit No No Check the circuit from VIDEO input jack to IC4001 from Tuner Pack to IC4001 Check the peripheral circuit of Q4007 Q4009 Replace IC4001 Replace IC4101 RECORDING...

Page 51: ...uit Replace IC6001 and check peripheral circuits Check 9V and 5V line Check Q6002 Is there VIDEO signal at pin 20 of IC6001 Is defect present when replacing the IF PCB Is the voltage at pin 6 of TU600...

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