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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

1 Two screws
     (+BVTP 4 

× 16)

2 Two screws
     (Washer Head) 
     (+P4x16)

3 Two screws
     (+BVTP 4 

× 16)

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 forward or backward

– 7 –

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

2 F1 Board

1 Two hooks

Note: Access to the B3 board is possible after removal

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

2 D5 Board

4 B3 Board

3 Two clips

1 Two clips

3 Three hooks

1 Five hooks

4 Cover, H

2 H1 Board

5 H2 Board

2 BC2 Board

1 One clip

3 Two clips

5 One clip

5 One screw
    (3 

× 12)(+)(BVTP)

2 Three screws
    (3 

× 12)(+) BVTP

3 Four hooks

5 One screw
    (3 

× 12)(+)(BVTP)

1 Five connectors

6 Four hooks

7 D Board

4 A Board

– 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.

a

a

b

b

c

 Anode Button

6

 Band, DGC(2) Removal

4

 Anode Cap Removal

Remove Clip, DGC(3)

qs

 Earth Coating Assy(2) Removal

qa

 Loosen the Neck Assembly 

fixing screw and remove 
Neck assy and VM board

qs

 Loosen the Deflection Yoke

fixing screw and remove

q;

 C Board Removal

8

 Spring Tension(2) 

Removal

qd

 Supports, CRT(2) Removal

7

 DGC(2) Removal

5

 Holder, DGC(2) Removal

qf

 Nut, Locking (4)  

qg

 Nut special CRT (4)  

• 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) Removal 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).