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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 Q6610
and Q6609.
If Q6610 and Q6609 go to ON, the voltage to the pin3 of IC001 go to UP.
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 UP.
The unit will automatically turn off.

[Vertical deflection failure]

Occurs when an absence of the vertical deflection pulse is detected by
Q6819 and R6832. 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.

[High voltage protector of Horizontal Deflection]

Occurs when an overvoltage of horizontal pulse is detected by D6809
and IC6801.
If the voltage of anode D6830, Q6800 and D6825 goes to High, the
voltage to pin34 of IC4301 go to UP.
The unit will automatically turn off.

IC4301

RGB JUNGLE

CXA2150AQ

OVP OCP

FROM

CRT (IK)

[V] Q6819, R6832

IC001

SYSTEM

SDA

SDA

IC003

MEMORY

IKIN

H PROT

LED 1

5

58

34

54

3

6

V PROT  

35

[H] D6825, D6830

– 6 –

1 Fourteen screws
     (+BVTP 4 

× 16)

2 Rear cover

not used for 
these models

not used for 
these models

1 Two screws
     (+BVTP 4 

× 16)

3 Two screws
     (+BVTP 4 

× 16)

2 Two screws
     (Washer Head) 
     (+P4x16)

not used for 
these models

Note: 1) Remove the Rear Cover (refer 1-1)

- unscrew all 14 screws fixed on the Rear Cover. Hold

the top of the TV Cabinet; lift the Rear Cover slightly
upwards to release the Rear Cover foot from the TV
Stand and slide it backwards from the TV Cabinet.

2) Release the Lead Assy Speaker (left side)
3) Lift up the chassis and place it in the Service

Position as shown:-

Place the front of the main
bracket on to the foot of the
TV Cabinet

Use a non elastic and non
conductive string to tie the
main bracket to the MFB
(metal hook on CRT)

Place the Terminal Bracket
edge into the hole on the
TV Stand foot

Caution: 1) In Service Position, make

sure all the TV connections
are connected correctly
before turning on the TV
set.

2) The TV on the TV Stand

without Rear Cover is
unstable. As such be
careful not to push the TV
foward or backward

– 7 –

2 D5 Board

4 B3 Board

3 Two clips

1 Two clips

2 BC1 Board

4 V2 Board (KV-DR29M31/M61)

P Board 
(not used for 
these models)

1 One clip

3 Two clips

3 Three hooks

1 Five hooks

4 Cover, H

2 H1 Board

5 H2 Board

5 One screw
     (3 

× 12)(+) BVTP

5 One screw
     (3 

× 12)(+) BVTP

2 Three screws
     (3 

× 12)(+) BVTP

3 Four hooks

1 Five connectors

6 Four hooks

7 D Board

4 A Board

Note: Access to the B3 board is possible after removal

of the shiledcase. Remove the shiledcase by
removing 2 screws +BVTP 3x16

2 Two screws
     (+BVTP 3 

× 12)

3 One screw
    (+BVTP 3 

× 12)

3 One screw
     (+BVTP 3 

× 12)

1 One screw
     (+BVTP 4 

× 16)

5 Terminal bracket

4 Two hooks

1 Two hooks

2 F1 Board

– 8 –

" Band, DGC(1) Removal (only top-side) (x1)

4 Anode Cap Removal

not used for 
these models

& Earth Coating Assy Removal (x2)

6 Loosen the Neck Assembly 

fixing screw and remove

8 Loosen the Deflection Yoke

fixing screw and remove

5 C Board Removal

9 Chassis Assy Removal

7 VM Board Removal

% Spring Tension 

Removal (x2)

! Supports, CRT Removal (x2)

$ DGC Removal (x1)

# Holder, DGC Removal (x2)

) Nut special CRT (x4)  

( Nut, Locking (x4)  

• The picture tube is upside down for KV-DR29M31 (OCE) only and the position for the anode cap and tension springs

are 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) Place the TV set with the CRT face down on a cushion (jig).
2) Removal the Rear Cover.
3) Unplug all interconnecting leads from the Deflection Yoke, Neck Assy, Degaussing Coils and CRT grounding strap.