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– 5 –

Turn off the power switch on the TV main unit or unplug the power cord from the outlet to stop the STANDBY/TIMER lamp
from flashing.

For errors with symptoms such as “power sometimes shuts off” or “screen sometimes goes out” that cannot be confirmed, it
is possible to bring up past occurances of failure for confirmation on the screen:

[To Bring Up Screen Test]
In standby mode, press buttons on the remote commander sequentially in rapid succession as shown below:

[Screen display] / channel [5] / Sound volume [-] / Power ON

˘

Note that this differs from entering the service mode (mode volume  [+]).

Diagnostic Item

Flash Count*

+B overcurrent/overvoltage

2 times

Vertical deflection stopped

White balance failure

5 times

* One flash count is not used for self-diagnostic.

2 times

5 times

Lamp ON 0.3 sec.

Lamp OFF 0.3 sec.

Lamp OFF 3 sec.

002 : 000
003 : 000
004 : 000
005 : 001

101 : 000

SELF DIAGNOSTIC

Numeral "0" means that no fault has been detected.

Numeral "1" means a fault has been detected.

STANDBY/SLEEP lamp

– 6 –

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-diagnostic 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 as shown below when the diagnostic
screen is being displayed.

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 ªOCPº]

Occurs when an overcurrent on the +B(135) line is detected by Q604. If Q604 go to ON
and the voltage to pin 18 of IC301 should go down when V.SYNC is more than seven
verticals in a period, the unit will automatically turn off.

[Vertical deflection stopped]

Occurs when an absence of the vertical deflection pulse is detected by Q509 and IC001
shut down the power supply.

[Vertical deflection overcurrent]

Occurs when an overcurrent on V drive line is detected by Q507. Power supply will be
shut down when detect this by IC001.

[White balance failure]

If the RGB levels* do not balance or become low level within 5 seconds, this error will be
detected by IC301. TV will stay on, but there will be no picture.

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

IC301

Y/CHROMA JUNGLE

FROM

CRT

[V] Q509/507

IC001

SYSTEM

IC003

MEMORY

IK-IN

MP/
PROTECT

O-LED

IO-8DAT

B-DAT

IO-SDAT

5

21

18

51

46

SDA 35

FROM
[+B] Q604 C6

45

– 7 –

1 Nine screws
     (+BVTP 4 

× 16)

2 Rear cover   

1 Four screws
     (Washer head)
     (+P 4

×16 )

2 Speaker Block Assy

3 J Board

4 Two screw
     (+BVTP 3 

× 12)

5 Terminal bracket

2 Two screws
     (+BVTP 3 

× 12)

1 One screw
     (+BVTP 4 

× 16)

6 Two Hooks

2 V1 Board

1 Two claws

– 8 –

• 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) Removal the rear cover.
3) Removal the Speaker Block Assy.

5 Cover, H

6 H2 Board

4 Two hooks

3 Four hooks

3 H1 Board

1 Two screws
     (Washer head)
     (+BVTP 3 x 12)

5 A Board

4 B9 Board

1 One screw

(Washer head)
(+BVTAP 3 x 12)

2 One screw

(Washer head)
(+BVTAP 3 x 12)

3 Two screws

(Washer head)
(+BVTAP 3 x 12)

!∞ Nut, locking

!¡ Holder, DGC(2) 
     Removal

q;

 Spring Tension(2) 

     Removal

8 Loosen the Neck Assembly

fixing screw and removal

7 VM1 Board Removal

9 Chassis Assy Removal

5 C6 Board Removal

6 Loosen the Neck Assembly

fixing screw and removal

qs

 Degaussing Coil

!£ Band, DGC Removal

4 Anode Cap Removal

qf

 Earth Coating Assy