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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 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 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 indicalor 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

20

– 6 –

1 Two screws

(+BVTP 4 × 16)

2 Two screws

(Washer Head)
(+P4 × 16)

1 Two hooks 

4 One screw

(+BVTP 3 x 12)

2 F Board

3 BC Board

1 One screw
 

(+BVTP 3 × 12

 

Type2 IT-3)

2 Two hooks 

6 One screw
 

(+BVTP 3 × 12

 

Type2 IT-3)

7 J1 board

5 Terminal bracket

3 One screw
 

(+BVTP 4 × 12

 

Type2 IT-3)

4 Two screws
 

(+BVTP 3 × 12

 

Type2 IT-3)

1 Nine screws
 

(+BVTP 4 × 16

 

Type2 IT-3)

2 Rear cover

– 7 –

1 Four screws
     (+BVTAP 3 × 12)

4 Two screws (Washer head)
     (+BVTP 3 × 12)

3 Four Hooks

2 A Board

2 Five Hooks     

5 Three Hooks     

3 Cover, H

4 H2 Board

1 

H1 Board

    

2 D3 Board

1 Three Hooks

1 Five Hooks

2 B

 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.

•

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 direc-

tion indicated by the arrow b.

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

anode button,  the anode-cap can be removed by
turning up the rubber cap and pulling it up in the
direction of the arrow c.

•

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 inter connecting leads from the Deflection Yoke, Neck assy, Degaussing Coil.

6

 Earth Coating Assy

4 Anode Cap Removal

5 Band, DGC Removal

8 C Board Removal

9 Chassis Assy Removal

0

 VM Board Removal

qd

 Holder, DGC(2) Removal

qs

 Spring Tension(2) Removal

qg

 Screw Tapping 7+

 

Crown Washer

qf

 Degaussing Coil

7 Loosen the Neck Assembly
  fixing screw and removal

qa

 Loosen the Deflection Yoke

  fixing screw and remove