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– 5 –

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 OCP ]

Occurs when an overcurrent on the +B(135) line is detected by Q6804.
If Q6804 go to ON, the voltage to the pin57 of IC4301 go to "HIGH".
The unit will automatically turn off.

[High voltage protector of Horizontal Deflection]

Occurs when an overvoltage of horizontal pulse is detected by D6809.
If the voltage of anode D6809, Q6814 and D6808 goes to High, the
voltage to pin57 of IC4301 go to "HIGH".
The unit will automatically turn off.

[+B overvoltage OVP ]

Occurs when an overvoltage on the +B(135) line is detected by D6635
and Q6611. If Q6611 go to ON, the voltage to pin6 of IC001 go to
"HIGH". The unit will automatically turn off.

[Vertical deflection failure]

Occurs when an absence of the vertical deflection pulse is detected by
Q6808 and R6910. 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 IC4301.
TV will stay on, but there will be no picture.

[5V/9V failure]

Occurs when 5V/9V is not supplied to Mcon (IC001).
No raster will be detected or no picture.

IC4301

RGB JUNGLE

CXA2170AQ

OVP

FROM

CRT (IK)

[V] Q6808, R6910

IC001

SYSTEM

SDA

SDA

9V

5V

IC004

MEMORY

IK_IN

H PROT

RED LED

5

24

57

7

6

V PROT  

56

[OCP] Q6804, D6821

[H] D6808, D6809

84

14,47,

82

– 6 –

2 Rear cover   

1 Twelve screws

(BVTP 4 

× 16)

2

 Two screws

     (Washer Head)
     (+P4 

× 16)

1

 Two screws

     (BVTP 4 

× 16)

5 One Screw
     (+BVTP 3 

× 12)

6 Three Hooks

3 One screw
     (+BVTP 4 

× 16)

4 Five screws
     (+BVTP 3 

× 12)

2 Terminal Bracket

1 One screw
     (+BVTP 3 

× 12)

2

 J Board

1

 Five Screws

     (+BVTP 3 

× 12)

– 7 –

2 Two clips

BH1 Board

1 F1 Board

2 Four Hooks

1 Three Hooks

2 

DL Board

3 Five Hooks     

4 

H1 Board

    

1 

H2 Board

2 Four
     Hooks

2 Five screws
     (BVTAP 3 

× 12)

1 One screw
     (washer head)
     (+P 3 

× 12)

6 Five Hooks

4 A Board

5 D Board

3 Three
      Hooks

1

 BH1 Board

4

 BC Board

6

 BP Board

(KV-DR29M86)

5

 Two 

Hooks

3

 Two Hooks

1

 Two Hooks

– 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

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.

• 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.

• The picture tube is upside-dwon for KV-DA29M31 only and the position for the anode cap and tension springs

changed accordingly.

• Please make sure the TV set is not in standing position before removing necessary CRT support located on

bottom right and left.

• When removing the Nut Locking: first make sure to hold the Nut special CRT with a spanner while opening the Nut

Locking using a torque driver. Then proceed to remove the Nut special CRT using a torque driver.

1) Remove the Rear Cover.
2) Unplug all interconnecting leads from the Deflection Yoke, Neck Assy, Degaussing Coils and CRT grounding strap.

Remove Chassis Assy

3) Place the TV set with the CRT face down on a cushion (jig).

9

 Earth Coating Assy

7

 Degaussing Coil

4

 Anode Cap Removal

q;

 C Board Removal

8

 Spring Tension

(2) Removal

qd

 

Support, CRT Removal (x2)

5

 Holder, DGC

     Removal (x2)

qf

 Screw, Tapping 7 +

     Crown Washer (4)

qs

 Loosen the Deflection Yoke

fixing screw and remove

6

 Band, DGC Removal

qa

 Loosen the Neck Assembly

     fixing screw and remove 

Neck Assy & VM board Removal

a

a

b

b

c

 Anode Button