DOWNLOAD Sony KV-SZ292M31 (serv.man2) Service Manual ↓ Size: 13.55 MB | Pages: 79 in PDF or view online for FREE

– 4 –

[+B overcurrent $OCP%]

Occurs when an overcurrent on the +B(135V) line is detected by pin 32 of IC001 (A board).
If the voltage of pin 32 of IC001 (A board) is more than 4V, the unit will automatically go to
standby.

[V-PROTECT]

Occurs when an absence of the vertical deflection pulse is detected by pin 13 of IC001
(A board).

[IK $AKB%]

If the RGB levels* do not balance within 15 sec after the power is turned on, this error will be
detected by IC001 (A board). TV will stay on, but there will be 5 times LED blinking.

Occurs when IC001 internal HV protect detects an abnormal H-Pulse (frequency) due to
improper power supply to IC001. TV cuts off high voltage power of anode CRT. No picture will be
detected. eg: IC602, IC604 go faulty.

* (Refers to the RGB levels of the AKB detection Ref pulse that detects IK.)

A BOARD

IC001

Y/CHROMA JUNGLE

A BOARD

IC503

V.OUT

A BOARD

IC001

SYSTEM

A BOARD

IC003

MEMORY

FROM

CV BOARD

IC751 PIN 5

IK

EHT0

RED LED

DISPLAY

SDA1

V.GUARD

SDA

5

F.B-PLS

3

13

84

32

122

A BOARD

FROM

Q816

COLLECTOR

99

POWER SUPPLY NG (+5V)
for VIDEO PROCESSOR

2 : 

000

3 :

N/A

4 :

000

5 :

001

8 :

002

101 :

N/A

"0" means no fault has been detected.

"1" means a fault has been detected.
"2" means two faults has been detected.

"N/A" means not available for this models.

SELF DIAGNOSTIC

5

8

1.

Display self diagnostic screen

[Display] t [Channel    ] t [Volume    ] t [Power / TV]

Note: The above must be performed while TV is on standby mode.

2.

Stop standby flash

i) Turn off power switch on main.
ii) Unplug power cord from the outlet.

3.

Clear fault result

In self diagnostic screen, press 

[Channel    ] t 

-

Note: Diagnostic results display on screen is not automatically cleared. Therefore,
clear result after completion of repair.

4.

Quit self diagnostic screen

Turn off power switch of remote commander or main unit.

– 5 –

1 Eleven screws
     (+BVTP 4 

× 16)

2 Rear cover

1 Two screws

       Tapping screw 

       (+PWH 4x16)

2 H2 Board

1 Two Hooks

3 A Board

– 6 –

•

PleaseThe Picture Tube is upside down and the position for the anode cap and tension springs are changed
accordingly (for KV-SZ292M31 only).

•

Please make sure the TV set is not in standing position before removing necessary CRT support located on bottom
right and left.

1) Remove the rear cover.
2) Unplug all interconnecting leads from the Deflection yoke, Neck assy, Degaussing Coil and CRT grounding strap.

Remove Chassis Assy.

3) Place the TV set with the CRT face down on a cushion jig.

• After removing the anode, short circuit the anode of the picture tube and the anode cap to the metal chassis, CRT shield or

carbon paint on the CRT.

• REMOVING PROCEDURES

1 Turn up one side of the rubber cap in the direction

a.

2 Using a thumb pull up the rubber cap firmly in the direction

b.

3 When one side of the rubber cap is separated from the

c.

• HOW TO HANDLE AN ANODE-CAP

1 Do not damage the surface of anode-caps with sharp

2 Do not press the rubber too hard so as not to damage

3 Do not turn the foot of rubber over too hard.

a

a

b

b

c

 Anode Button

qd

 Loosen the Deflection Yoke

fixing screw and remove

4

 Anode Cap Removal

7 Band, DGC Removal (x1)   

5 CV Board Removal

6 Loosen the Neck Assembly

fixing screw and remove VM coil

9

 Holder, DGC Removal (x2)

     (not used for these models)

8

 Spring Extension Removal (x2)

qf

 Screw Tapping

     7+ Crown Washer

0

 Degaussing Coil

qs

 Supports, CRT(2) Removal

qa

 Earth Coating Assy

  

– 7 –

CAUTION:
1.  Do not overpull the wires during dressing
     _> avoid disconnection of wires.
2.  Make sure wires are kept away from
     sharp edges, heatsinks & other
     hight-temperature parts.

W082

W077

P/N 1-923-512-11

W016

Dress both Lead Assy, Jumpers

along edge of shield case

P/N 1-910-026-28

Conn Assy,

5P YUV

CN905

Dress both Lead  

Assy, Jumpers

around CN905, C903

and below Conn

Assy, 5P YUV

C903

Dress Lead Assy, Jumper far

away from C514 and T501

W010

W065

W084

C514

T501

Keep Lead Assy, Jumpers

away from R121

 No. 

Part No. 

Description 

Block 

Remark

 

1 1-910-026-28 

Lead 

Assy, 

Jumper 

A(Var)

 W016-W084(1)

  

 

 

 

W077-W065(0)

 2  1-923-512-11  WIRE 

UL1007 

AWG24 

150MM 

ORG  A(Com)  W082-W010(1)

 No. 

Part No. 

Description 

Block 

Remark

 1  1-910-036-25 

Lead 

Assy, 

Jumper 

A(Var)  W075-W085(1)

Dress Conn Assy, 4P VH into hook as shown.

CN6101

CN4102

Insert Connector Assy,

4P VH into holder

L2601

W075

P/N 1-910-036-25

For illustration only

Dress Lead Assy, Jumper in 

between C211 and L2601

C211

Dress Lead Assy, 

Jumper around C249

W085

A003

A002

Dress between 

A003 and A002

UL Tube

i) 

 

      ii) 

For 

Audio 

6+6 

Non 

DSP 

models.