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1

Screw
(+BVTT 3 x 8)

CN601

GND

GND

GND

CN303

GND

7

Three screws
(+BVTT 3 x 12)

8

Four screws
(Washer head +P3 x 8) 

2

Cable stopper

5

A board

6

AA board

9

D board

3

Cable cover

4

Cable holder

1

2

A board

D board

3

(Note) The electric potential of heat sink of IC401 is not GND.

So please do not touch it absolutely to the base chassis
and etc., which make an ultimate cause of the bad move-
ment or break.

2-2

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 up it in
the direction of the arrow 

c

.

1

Don’t scratch the surface of anode-caps with shartp shaped mate-
rial!

2

Don’t press the rubber hardly not to damege inside of anode-caps!
A material fitting called as shatter-hook terminal is built in the
rubber.

3

Don’t turn the foot of rubber over hardly!
The shatter-hook terminal will stick out or damage the rubber.

NOTE: Short circuit the anode of the picture tube and the anode cap to the metal chassis, CRT shield or carbon painted on the CRT,

after removing the anode.

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 direction indicated by the
arrow 

b

.

3

Two screws
(+BVTP 4 x 16)

5

Base assembly

4

Two screws
(+BVTT 4 x 8)

6

Four screws
(Tapping screw 5)

11

Deflection yoke

10

Neck assembly

8

Degaussing coil assembly

2

A board

9

Two extention springs

1

Anode cap

12

Two degaussing coil holders

13

Two degaussing coil holders

7

Picture tube

Bezel assembly

Cushion

8 pin

2 pin

CN2

CN601

GND

CN904

CN303

2-3

1

Screw
(+BVTP 4 x 16)

3

Claw

8

Claw

4

H1 board

Picture tube

Bezel

Cushion

6

Two screw
(+BVTP 4 x 16)

9

H2 board

10

Slide switch

7

H2 bracket

5

Menu button

2

H1 bracket

2-4

Part Replaced (

[

)

RV501

HV ADJ

When replacing or repairing the shown below table, the

following operational checks must be performed as a

safety precaution against X-rays emissions from the unit.

•

Using an external DC Power Supply, apply the voltage

shown below between cathode of D517 on D board and

GND, and confirm that the HV HOLD DOWN circuite

works. (TV Raster disappears)

Standard voltage  :  35.80 

+0.00

 V DC

• Input voltage : 120 

±

 2 V AC

• Input signal

: Cross hatch (Black lines on white) at

68.7kHz

• Beam control : CONT : 127 (cent), BRT : 255 (max)

•

An ammeter in series between FBT pin !] on D board

and GND, then, decrease gradually the resistance of the

variable resistor from maximum to minimum, and con-

firm that the Beam Current Protector Circuite works

(TV Raster disappears). The current must be within the

range shown below.

• Standard current  :  1.55 

+0.00

 mA

• Input voltage : 120 

±

 2 V AC

• Input signal

: Cross hatch (Black lines on white) at

68.7kHz

• Beam control : CONT : 127 (cent), BRT : 255 (max)

•

Standard voltage : 178.0 

±

 3.0 V DC

• Input voltage : 120 V AC

Note : Use NF power supply or make sure that

distortion factor is 3% or less.

• Input signal

: Cross hatch (White lines on black) at

68.0 kHz

• Beam control : CONT : 127 (cent), BRT : 255 (max)

HV Regulator
Circuit Check

HV Protector
Circuit Check

Beam Current
Protector Circuit
Check

Part Replaced (

]

)

D board IC501, C532, C534,

C539, C553, C554,
C555, C556, C558,
C561, R540, R541,
R542, R544, R564,
R567, R568, RV501,
T501 (FBT)

D board IC607, IC901, D515,

D517, C540, C542,
C544, R510, R543
R547, R549, R552,
R595,
T501 (FBT)

D board IC605, IC607, IC901,

C535, C541, R545,
R546, R548, R550,
R596, R934,
T501 (FBT)

*

Confirm one minute later turning on the power.

3-1

-0.10

-0.10