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– 5 –

Diagnostic Item

Flash Count*

+B overcurrentovervoltage

2 times

+B overvoltage

3 times

V deflection stop

4 times

White balance failure

5 times

High voltage protecter

6 times

Audio protection

7 times

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

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.

Lamp ON 0.3 sec.

Lamp OFF 3 sec.

Lamp OFF 0.3 sec.

2 times

5 times

4 times

5 times

6 times

7 times

STANDBY/SLEEP lamp

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

– 6 –

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 

[+]

).

002 : 000
003 : 000
004 : 000
005 : 001
006 : 002

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

Numeral "1" means a fault has been detected.

007 : 000

101 : 000

SELF DIAGNOSTIC

Numeral "2" means two faults have been detected.

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 diag-
nostic 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.

– 7 –

[+B overcurrent ªOCPº]

Occurs when an overcurrent on the +B(135) line is detected by Q5004(D board). If
Q6610(D board) go to ON,  the voltage to pin 5 of IC001(A board) go to UP. The unit
will automatically turn off.

[+B overvoltage ªOVPº]

Occurs when an overdrive on the +B(135V) line is detected by D6635(D board), Q6611
and Q6619. If Q6611 go to ON, the voltage to pin 8 of IC001 go to UP. The unit will
automatically turn off.

[Vertical deflection failure]

Occurs when an absence of the vertical deflection pulse is detected by Q5010. Shut
down the power supply.

[White balance failure]

If the RGB levels do not balance or become low level within 5 seconds. This error will
be detected by IC4300. TV will stay on, but there will be no picture.

[High voltage undervoltage protection ªHV UVPº]

High-voltage undervoltage conditions may indicate defective transformer, rectifiers,
CRT or fault within the power supply circuit. When high-voltage drops for any reason,
so does the voltage at T8001.17 and buffer IC8004.7. The malfunction is detected by
comparator IC8006A that generates high logic signal labeled H PROT. This signal is
sent via D8014 to the H prot that opens contacts of the AC relay RY6501 and turns off
main power.

[Audio Protector ]

If the Audio out line became DC. This error will be detected by Q1211, Q1209, and
Q1210.The unit will automatically turn off.

IC4300

CXA2170Q

RGB JUNGLE

FROM

CRT(IK)

Q5018, D8035 
(D Board)

IC001

SYSTEM

IC003

MEMORY

IO-SDAT

IK-IN

HPROT

SDA1

LED

SDA0

5

15

24

57

22

46

52

Q5010 
(D Board)

V PROT

56

OCP

V PROT

5

OVP

V PROT

8

H PROT 87

IC2602
( A Board)

Au PROT

100

IC1203,1240

(A Board)

– 8 –

1

 Two screws

     (+PWHTP 4X25) 

2

 Arm (R) block assy

1

 Claws (Main bracket)

2

 Chassis assy

2

 Rear cover

1

 Four screws (KV-HS38M90)

     (+BVTP 4X16) 

1

 Two screws (KV-HS29/34M90)

     (+BVTP 4X16) 

1

 Four screws (KV-HS38M90)

     (+BVTP 4X16) 

1

 Two screws (KV-HS29/34M90)

     (+BVTP 4X16) 

1

 Four screws

     (+BVTP 4X16) 

1

 Four screws

     (+BVTP 4X16) 

1

 Four screws (KV-HS38M90)

     (+BVTP 4X16) 

1

 Four screws (KV-HS29/34M90)

     (+BVTP 4X16)