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– 5 –

STANDBY (1) indicator

STANDBY (1)

STANDBY (1)

Turn off the power switch on the TV main unit or unplug the power cord from the outlet to stop the STANDBY (1)
indicator from flashing.

For errors with symptoms such as "power sometimes shuts off" or "screen sometimes goes off" that cannot be
confirmed, it is possible to bring up past occurrences of failure on the screen for confirmation.

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

Display 

/ Channel 5 / Volume 

/ Power 

 / TV 

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

The following screen will be displayed indicating the error count.

Diagnostic Item

Flash Count*

+B overcurrent

2 times

V-Protect

4 times

IK (AKB)

5 times

Power Supply NG (+5V)

8 times

for Video processor

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

Lamp OFF 3 sec 

Lamp ON 300ms

Lamp OFF 300ms

2 : 

0

3 :

N/A

4 :

0

5 :

1

8 :

0

101 :

N/A

SELF DIAGNOSTIC

Numeral "0" means that no fault was detected.
Numeral "1" means the number of a fault occurrence (1 ~ 255).

– 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-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

SDA1

V.GUARD

SDA

5

F.B-PLS

3

13

84

32

122

A BOARD

FROM

Q804

COLLECTOR

99

POWER SUPPLY NG (+5V)
for VIDEO PROCESSOR

– 7 –

2 Rear cover

1 3D Speaker box assy

(KV-HW21M53)

2

 Rear cover

1

Seven screws

(BVTP 4 

× 16)

1

Four screws
(WH DIA 
16

×+P 4×16)

2

 

Terminal 

     bracket

3

 

One screw

      (+BVTP 4x16)

1

 

One screw

      (+BVTP 3x16) 

– 8 –

J Board
(KV-HW21M53)

A Board

8

 Degaussing Coil

2

 C Board Removal

5

 Chassis Assy Removal

6

 Support, CRT(2) Removal

3

 Loosen the Neck Assembly

fixing screw and removal

7

 Holder, DGC(2) 

Removal

9

 DGC(2) Removal

1

 Spring Tension (2)

Removal

0

 Nut locking, CRT (4)

4

 Loosen the Deflection Yoke

fixing screw and remove

• Pls 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 

i

n

t

er connecting leads from the Deflection Yoke, Degaussing Coil and CRT grounding strap.