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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]

/ [ENTER]

[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 97 of IC001 (A Board) is less than 1V when V.SYNC is
more than HV, the unit will automatically go to standby.

[I-Port]

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, and indicator will start to Blink 5
times.

[HV Protect]

Occurs when IC001 internal HV protect detects an abnormal H-Pulse (frequency) 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 –

1 Nine screws
     (+BVTP 4 

× 16)

     Type 2  TT(B)

2 Rear cover

1 Two screws
     Washer head
     (+P 4 

× 16)

1 One screws
     (+BVTP 3

×12)

     Type 2  TT(B)

6 Two hooks 

2 One screws
     (+BVTP 3 

× 12)

     Type 2  TT(B)

7 J Board

4 Two screws
     (+BVTP 3 

× 12)

     Type 2  TT(B)

3 One screws
     (+BVTP 4 

× 16)

     Type 2  TT(B)

5 Terminal bracket

2 F Board

3 One Hook

1 One screws
     (+BVTP 3 

× 12)

– 7 –

1 Four Hooks

2 D3 Board

2 H1 Board    

1 Five Hooks     

5 Three Hooks     

4 Cover, H

3 H2 Board

1 Four screws
     (+BVTAP 3 

× 12)

2 Four Hooks

3 A Board

4 Two screws
     (washer head)
     (+P 3 

× 12)

– 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

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.

6

 Earth Coating Assy

5 Band, DGC Removal

8 C Board Removal

9 Chassis Assy Removal

0 VM1 Board Removal

qd

 Holder, DGC(2) Removal

qs

 Spring Tension(2) Removal

qg

 Screw Tapping 7 +

     Crown Washer (4)

qf

 DGC(2) Removal

7 Loosen the Neck Assembly

fixing screw and removal

qa

 Loosen the Deflection Yoke

fixing screw and remove

qh

 Anode Cap Removal

4 Block Center

qj

 Support, CRT Removal (x2)