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– 5 –

Since the diagnosis 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 sequentially when the self-diagnostic screen is
displayed, as shown below:

Channel [8]

/  "0"

[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 97 of IC001
(A Board). If the voltage of pin 97 of IC001 (A Board) is less than 3.9V, the unit will
automatically go to standby.

[Vertical NG.]

Occurs when an absence of the vertical deflection pulse is detected by pin 116 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, and indicator will start to Blink 5
times.

[Supply Voltage Protection]

Occurs when IC001 internal Supply Voltage Protection detects less than 4.2V due to
unproper power supply to IC001. TV cuts off high voltage power of anode CRT. No
picture will be detected eg IC607, IC604 go faulty.

* (Refers to the RGB levels of the AKB detection Ref pulse that detects 1K)

A BOARD

IC001

Y/CHROMA JUNGLE

A BOARD

IC503

V.OUT

A BOARD

IC001

SYSTEM

A BOARD

IC003

MEMORY

FROM

C BOARD

IC751 PIN 5

IK

EHTO

RED LED

DISPLAY

SDA1

V.GUARD

SDA

5

F.B-PLS

3

116

45

97

7

A BOARD

FROM

Q511

COLLECTOR

30

– 6 –

2 One Screw
     (+BVTP 3 

× 12)

3 One screw
     (+BVTP 4 

× 16)

6 Two screws
     (+BVTP 3 

× 12)

5 Terminal Bracket

1 One screw
     (+BVTP 3 

× 12)

7 J3 Board    

4 Two Hooks

2 Rear cover   

1 Eleven screws

(BVTP 4 

× 16)

1 Two screws
     (Washer Head)
     (+P4 

× 16)

3 F Board

2 One Hook

1 One screw
     (+BVTAP 3 

× 12)

– 7 –

2 Five screws
     (3 

× 12),(+)BVTAP

1 One screw
    (Washer Head)
     (+P 3 

× 12)

4 A Board

3 Four Hooks

1 Six Hooks     

2 

H5 Board

    

2 

H4 Board

    

1 Four
     Hooks     

1 Two Hooks

2 

D3 Board

– 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

a.

2 Using a thumb pull up the rubber cap firmly in the direc-

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

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

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

a

a

b

b

c

anode button

•

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

1) Place the TV set with the CRT face down on a cushion jig
2) Remove the rear cover.
3) Unplug all interconnecting leads from the Deflection yoke, Neck assy, Degaussing Coil and CRT grounding strap.

qa

 Earth Coating Assy

9 Degaussing Coil

4 Anode Cap Removal

5 C Board Removal

7 Chassis Assy Removal

q;

 Spring Tension(2)

     Removal

8 Holder, DGC
     Removal (x2)

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

6 Loosen the Deflection Yoke

fixing screw and remove

!¡ Band, DGC Removal

6 Loosen the Neck Assembly
     fixing screw and removal