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1 A1 board

(C block)

2 Two screws

(+BVTT 4 x 6)

6 Two screws

(+BVTP 3 x 8)

Pig tail cover

10 D board

4 Video block assembly

5 Cable with connector

7 Rear plate assembly

Screw (+BVTT 3 x 8)

8 Five screws

(+BVTP 3 x 10)

CN315

CN305

CN321

GND

#3   

]

[

AEP

#3   

]

[

AEP

#3   

]

[

AEP

#3   

]

[

AEP

#3   

]

[

AEP

CN601

CN602

CN605

CN1103

Connector (2P)

CN501

GND

GND

CN

9

3

2

1

Four tapping screws (5)

5 Bezel assembly

3 Screw 

(+BVTP 4 x 16)

4 Screw 

(+BVTP 4 x 16)

6 Three screws

(+BVTP 3 x 10)

9 H1 board

8 Joy stick

7 Input 

selection button

CN1400

Picture tube shield

Before removing the bezel assembly, secure

   the picture tube by attaching two screws to
   the picture tube shield at the positions shown
   with an arrow (diagonal two places) to prevent 
   the picture tube from falling.
   (Use the screws +BVTT 4 x 8 that fix EMI shield.)

a

b

Anode Button

c

WARNING: High voltage remains in the CRT even after the power is disconnected. To avoid electric shock, discharge CRT before attempting to 
remove the anode cap.   Short between anode and coated earth ground strap of CRT.
NOTE: After removing the anode cap, short circuit the anode of the picture tube and the anode cap to either the metal chassis, CRT shield, or carbon 
painted on the CRT. 

1.  Do not use sharp objects which may cause damage to the surface of the 

anode cap. 

2.  To avoid damaging the anode cap, do not squeeze the rubber covering too 

hard. A material fi tting called a shatter-hook terminal is built into the rubber. 

3.  Do not force turn the foot of the rubber cover. This may cause the shatter-hook 

terminal to protrude and damage the rubber.

Turn up one side of the rubber cap in the 
direction indicated by arrow  a .

Use your thumb to pull the rubber
cap fi rmly in the direction indicated
by arrow   b .

When one side of the rubber cap separates from 
the anode button, the anode cap can be removed 
by turning the rubber cap and pulling it in the 
direction of arrow   c .

4 Picture tube

1 Anode cap

2 A1 board (C block)

3 Neck assembly

CN1

CN

Connector (2p)

GND

CN602

CN601

CN604

CN1102

CN312

CN311

CN321

CN305

CN318

CN319

CN320

CN316

CN315

CN303

CN1

CN

CN1103

CN1400

CN605

CN701

CN501

CN904

CN2601

Picture tube

US board

A1 board

D board

H1 board

AC inlet

1.  Turn the RV901 slowly, and adjust so that high voltage is in the 

speciÞ ed range.

 [SpeciÞ cation]:  27.00 ± 0.05 kV
2.  Check that the voltage of D912 cathode on the D board is 17.0V 

or more.

1.  Using external DC Power Supply, apply the voltage shown below 

between cathode of D912 and GND, and check that the RASTER 
disappears.

 [SpeciÞ cation]:  19.95 ± 0.00/-0.05V

1.  Connect constant current source to a section between T901 

(FBT) 

11

 pin and GND, and check that the RASTER 

disappears when the speciÞ ed current ß ows to the  

11

 pin.

 [SpeciÞ cation]:  2.12 ± 0.00/-0.051 mA

 

Allow the unit to warm up for one minute prior to checking the 
following conditions.

Part Replaced (    ) 

HV ADJ

RV901

Part Replaced (    ) 

D Board   C925, IC901, R901, R902, R905,

R924, R925, R926, RV901, 
T901 (FBT),
•  Mounted D Board

HV Regulator
Circuit Check

D Board   

C920, C923, D911, D912, R903, 
R917, R918, R919, R920, R923, 
T901 (FBT)  
•  Mounted D Board

N Board   

IC1001, RB1001
•  Mounted N Board  

N Board   

IC1001, RB1001
•  Mounted N Board  

HV HOLD
DOWN  
Circuit Check

D Board   

C930, D917, R921, R932, R933, 
R935, T901 (FBT) 
•  Mounted D Board

Beam Current
Protector  
Circuit Check

 ConÞ rm one minute after turning on the power.