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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.

[

High voltage protector of Horizontal Deflection]

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.

[+B overcurrent OCP ]

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 –

1

Fourteen screws
(+BVTP 4 × 16
Type2 IT-3)

2

 Rear cover

2

 One screw

(+BVTP 3 × 12
Type2 IT-3)

2

 One screw

(+BVTP 3 × 12
Type2 IT-3)

1

 One screw

     (+BVTP 4 × 16 

Type2 IT-3)

3

 Two hooks

4

 Terminal bracket

1

 Five screws

    (+BVTP 3 × 12 Type2 IT3)

2

 J board

1

 Two screws

     (+BVTP 4 × 16
       Type2 IT-3)

2

 Two screws

     (Washer Head) 
     (+P4x16)

3

Two screws
(+BVTP 4 × 16
Type2 IT-3)

– 7 –

4

 BP Board

2

 Two clips

1

 Two clips

3

 Two clips

6

 BC Board

5

 BH1 Board

2

 F1 Board

1

 Three hooks

2

 WL Board

1

 Three clip

3

 Three screws

    (+BVTP 3 × 12 Type2 TT(B))

2

 DL Board

1

 Three clip

3

 Four hooks

1

 Five hooks

2

 H1 Board

4

 H2 Board

5

 One screw

     (Washer Head) 
     (3 × 12)(+)(BVTAP)

5

 Two screws

     (Washer Head) 
     (+P3 × 12)

2

 Five screws

    (3 × 12)(+) BVTAP

3

 Two hooks

1

 Five connectors

6

 Five hooks

4

 D Board

7

 A Board

Note: Access to the BH1 board is possible after

removal of the shiledcase. Remove the
shiledcase by removing 2 screws +BVTP 3x12
Type2 IT-3

– 8 –

4

 Anode Cap Removal

7

 Degaussing Coil

6

 Band, DGC Removal

qa

 Loosen the Neck Assembly 

fixing screw and remove Neck
Assy and VM board

qs

 Loosen the Deflection Yoke

fixing screw and remove

0

 C Board Removal

8

 Spring Tension(2) 

Removal

5

 Holder, DGC

Removal (x2)

9

 Earth Coating Assy

qd

 Supports, CRT

Removal (x2)

qf

 Nut, Special, CRT (x4)

• 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.

•

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.

•

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.

b

b

a

a

c

anode button

•

Please make sure the TV set is not in standing position before removing necessary CRT support located on bottom
right and left.

1) Remove the Rear Cover.
2) Unplug all interconnecting leads from the Deflection yoke, Neck assy, Degaussing Coil and CRT grounding strap.

Remove Chassis Assy.

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