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– 5 –

Since the diagnostic results displayed on the screen are not automatically cleared, always check the self-diagnostic
screen during repairs. When you have completed the repairs, clear the result display to "0".

Unless the result display is cleared to "0", the self-diagnosis function will not be able to detect subsequent faults after
completion of the repairs.

[Clearing the result display]
To clear the result display to "0", press buttons on the remote commander subsequent as shown below when the
self-diagnostic screen is being displayed.

8 

, -

[Quitting Self-diagnostic screen]
To quit the entire self-diagnostic screen, turn off the power switch on the remote commander or the main unit.

[+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

IC804

V.OUT

A BOARD

IC001

SYSTEM

A BOARD

IC003

MEMORY

FROM

C BOARD

IC751 PIN 5

IK

EHTO

RED LED

DISPLAY

SDA0

V.GUARD

SDA

5

F.B-PLS

3

13

84

32

122

A BOARD

FROM

Q804

COLLECTOR

109

POWER SUPPLY NG (+5V)
for VIDEO PROCESSOR

– 6 –

1 Four screws
     ((1)(3.5 

× 14, Tapping)

2 Rear cover   

1  Eight screws
 (BVTP 

4 

× 16 Type 2 IT-3)

2 One Screw
     (+BVTP 3 

× 12

Type 2 IT-3)

3 One screw
     (+BVTP 4 

× 16

Type 2 IT-3)

6 Two screws
     (+BVTP 3 

× 12

Type 2 IT-3)

5 Terminal Bracket

1 One screw
     (+BVTP 3 

× 12 Type 2 IT-3)

7 J Board    

1 

H Board

    

2 

Two Hooks

– 7 –

• 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 Speaker Block Assy.
2) Remove the rear cover.
3) Unplug all interconnecting leads from Deflection Yoke, Neck Assy, Degaussing Coil, CRT grounding strap and

remove the chassis assy.

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

1 A Board

9

 Earth Coating Assy

7 Degaussing Coil

5 Holder, DGC Removal

4 Anode Cap Removal

0 C Board Removal

8

 Spring Tension(2)

     Removal

!£ Screw, Tapping 7 +
     Crown Washer (4)

!™ Loosen the Deflection Yoke

fixing screw and remove

6 Band, DGC Removal

!¡ Loosen the Neck Assembly
     fixing screw and removal

– 8 –

• 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
indicated by the arrow A.

2

Using a thumb pull up the rubber cap firmly in the di-
rection indicated by the arrow B.

3

turning up the rubber cap and pulling it up in the
direction of the arrow C.

• HOW TO HANDLE AN ANODE-CAP

1

2

3

anode button

a

a

b

b

c