KV-XG29M30 - Sony TV Service Manual (repair manual)

MODEL

COMMANDER DEST.

CHASSIS NO.

KV-XG29M30

RM-952 Australia

SCC-U55A-A

KV-XG29M61

RM-952 Singapore

SCC-U39C-A

KV-XG29M80

RM-952 E

SCC-U53C-A

MODEL

COMMANDER DEST. CHASSIS NO.

®

TV

1

2

3

4

6

7

8

9

0

5

JUMP

SOUND 

MODE

 

FAVORITE

PROGR

– 2 –

110-240 V AC, 50/60 Hz

220-240 V AC, 50/60 Hz

KV-XG29M30

Indicated on the rear of the TV

B/G, I, D/K, M

PAL, PAL 60, SECAM, NTSC4.43, NTSC3.58

NICAM Stereo/Bilingual B/G, I, D/K, A2 Stereo/Bilingual (German) B/G

VHF: E2 to E12
UHF: E21 to E69
CATV: S01 to S03, S1 to S41

VHF: 0 to 12, 5A, 19A

KV-XG29M30

UHF: 28 to 69
CATV: S01 to S03, S1 to S41

UHF: B21 to B68
CATV: S01 to S03, S1 to S41

VHF: C1 to C12, R1 to R12
UHF: C13 to C57, R21 to R60
CATV: S01 to S03, S1 to S41, Z1 to Z39

VHF: A2 to A13
UHF: A14 to A79
CATV: A-8 to A-2, A to W+4, W+6 to W+84

˘

˘

˘

˘

˘

75-ohm external terminal

5W + 5W

D

Input: 3*

Output: 1

Phono jacks; 1 V

P-P

, 75 ohms

* Two input lines available

≥

Input: 3*

Output: 1

Phono jacks; 500 mVrms

* Two input lines available

2

Output: 1

 Minijack

29 inch

72

Measured diagonally

68

Measured diagonally

794 

×

 573 

×

 517

48

Design and specifications are subject to change without notice.

!

– 3 –

................................

4

........................................................................

7

2-1.

Rear Cover Removal ................................................ 21

2-2.

Speaker Removal ..................................................... 21

2-3.

Chassis Assy Removal ............................................. 21

2-4.

Service Position ....................................................... 21

2-5.

Replacement of Parts ............................................... 21

2-5-1.

Replacement of Control Button .....................................

21

2-5-2.

Replacement of Light Guide ..........................................

21

2.6

V1 Board Removal .................................................. 22

2.7

D3 Board Removal .................................................. 22

2-8.

Terminal Bracket Removal ...................................... 22

2-9.

H2 Board Removal .................................................. 22

2-10. A and B6 Boards Removal ...................................... 22
2-11. Picture Tube Removal .............................................. 23
2-12. Removal of Anode Cap ............................................ 23

3-1.

Beam Landing .......................................................... 24

3-2.

Convergence ............................................................. 25

3-3.

Focus Adjustment .................................................... 27

3-4.

G2 (Screen) and White Balance Adjustments ......... 28

4-1.

Adjustments with Commander ................................ 29

4-2.

Adjustment Method ................................................. 29

4-3.

Picture Quality Adjustments .................................... 34

4.4

Deflection Adjustment ............................................. 34

4.5

H-Trapezoid Adjustment ......................................... 34

4-6.

A Board Adjustment After IC003 (Memory)
Replacement ............................................................. 34

4-7.

Picture Distortion Adjustment ................................. 35

5-1.

Block Diagram ......................................................... 37

5-2.

Circuit Boards Location .......................................... 39

5-3.

Schematic Diagrams ................................................ 40

(1)

Schematic Diagram of B6 Board ............................ 41

(2)

Schematic Diagrams of A Board ............................. 43

(3)

Schematic Diagram of H2 Board ............................... 59

(4)

Schematic Diagrams of C6 Board ........................... 61

(5)

Schematic Diagram of V1 Board ............................ 63

(6)

Schematic Diagram of VM1 and D3 Boards .......... 65

5-4.

Voltage  Measurements ............................................ 68

5-5.

Waveforms ............................................................... 73

5-6.

Printed Wiring Boards and Parts Location .............. 74

5-7.

Semiconductors ........................................................ 79

6-1.

Speaker Bracket ....................................................... 81

6-2.

Picture Tube ............................................................. 82

6-3.

Chassis ..................................................................... 83

....................................... 84

– 4 –

The units in this manual contain a self-diagnostic function. If an error occurs, the STANDBY/TIMER lamp will automatically
begin to flash.
The number of times the lamp flashes translates to a probable source of the problem. A definition of the STANDBY/TIMER
lamp flash indicators is listed in the instruction manual for the user’s knowledge and reference. If an error symptom cannot
be reproduced, the remote commander can be used to review the failure occurrence data stored in memory to reveal past
problems and how often these problems occur.

When an errors occurs, the STANDBY/TIMER lamp will flash a set number of times to indicate the possible cause of the
problem. If there is more than one error, the lamp will identify the first of the problem areas.

Result for all of the following diagnostic items are displayed on screen. No error has occured if the screen displays a “0”.

Diagnostic

Item

Description

• Power does not

turn on

• +B overcurrent

(OCP) or
overvoltage
(OVP)

• Vertical deflection

stopped

• Horizontal

deflection
overdrive

• White balance

failure (no
PICTURE)

• Micro reset

Detected

Symptoms

• Power does not come on.
• No power is supplied to the

TV.

• AC power supply is faulty.

• Power does not come on.
• Load on power line is

shorted.

• Has entered standby state

after horizontal raster.

• Vertical deflection pulse is

stopped.

• Power line is shorted or

power supply is stopped.

• No raster is generated.
• CRT cathode current

detection reference pulse
output is small.

• Power is shut down shortly,

after this return back to
normal.

• Detect Micro latch up.

Note 1: If a + B overcurrent is detected, stoppage of the vertical deflection is detected simultaneously.

The symptom that is diagnosed first by the microcontroller is displayed on the screen.

Note 2: Refer to screen (G2) Adjustment in section 3-4 of this manual.

No. of times

STANDBY/TIMER

lamp flashes

Does not light

2 times

5 times

—

Self-diagnostic

display/Diagnostic

result

—

002:000 or

002:001~255
003:001~255
004:001~255

at the same time

005:000 or

005:001~225

101:00 or

101:001~225

Probable

Cause

Location

• Power cord is not plugged

in.

• Fuse is burned out F8601

(B6)

• H.OUT Q511 is shorted. (A

board)

• IC1800 is shorted. (C6

board)

• -13V is not supplied. (A

board)

• IC 503 faulty (A board)

• G2 is improperly adjusted.

(Note 2)

• CRT problem.
• Video OUT is faulty. (C6

board)

• IC301 is faulty. (A board)
• No connection A board to

C6 board.

• Discharge CRT (C6 Board)
• Static discharge
• External noise