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– 13 –

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 hurt the surface of anode-caps with shartp shaped material!

2

Don’t press the rubber hardly not to hurt 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 hurt 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

.

     A block

2

     Anode cap

1

     Two screws
     (+BVTP 4 x 16)

3

     Stand assy

4

     Neck assy

5

     Deflection yoke

6

     Picture tube

8

     Four screws
     (Tapping screw 5)

7

     Demagnetization coil

9

     Tension spring

10

     Two degaussing coil holders

11

     Two degaussing coil holders

12

Cushion

– 14 –

Part Replaced (

[

)

RV501

HV ADJ

When replacing or repairing the shown below table, the fol-

lowing operational checks must be performed as a safety

precaution against X-rays emissions from the unit.

•

Using an external DC Power Supply, applying voltage of

7.00 ± 0.05 V between !] pin of FBT (T501) and GND,

and confirm that the vlotage of both ends C519 is with in

the Voltage range shown below.

• Standard voltage : Less than 3.26 V DC

• Input voltage : 120.0 ± 20 V AC

• Input signal

: Dot at 64.0 kHz

(VESA 1280 

×

 1024)

• Beam control : CONT : 100 %, BRT : 40 %

•

Standard voltage : 149.0

V DC

• Input voltage : 120.0 ± 2.0 V AC

Note : Use NF power supply or make sure that

distortion factor is 3% or less.

• Input signal

: All white at 60.0 kHz

(VESA 1024 

×

 768)

• Beam control : CONT : 100 %, BRT : 40 %

HV Regulator
Circuit

HV Protector
Circuit

Beam Current
Protector Circuit

Part Replaced (

]

)

D board IC801, C509, C533,

C542, C548, C802,
C814, C815, R506,
R508, R538, R539,
R540, R541, R807,
R822, R823, R824,
RV501, T501 (FBT)

D board IC501, IC801, IC904,

D511, D515, D516,
C515, C516, C517,
C525, R532, R533,
R534, R535, R557,
R558, R996,
T501 (FBT)
• Mounted D board

D board IC901, D596, C519,

C528, C549, C904,
R542, R543, R544,
R545, R939
• Mounted D board

*

Confirm one minute later turning on the power.

•

Confirm that the HV protector circuit works and CRT

screen disappearing when apply the voltage as shown be-

low between Cathode of D511 on D board and GND us-

ing an external DC Power Supply.

• Standard voltage  :  35.20 ± 0.05 V DC

• Input voltage : 120.0 ± 2.0 V AC

• Input signal

: Dot at 64.0 kHz

(VESA 1280 

×

1024)

• Beam control : CONT : 100 %, BRT : 40 %

+ 2.0
– 3.0

– 15 –

Mechanical
Center

Set the
finger

Connect the communication cable of the computer to the connector located on the D board on the monitor.  Run the service software and
then follow the instruction.

IBM AT Computer

as a Jig

1-690-391-21

1

A-1500-819-A
Interface Unit

2

*The parts above (                ) are necessary for DAS adjustment.

1

3

D-sub
(9 Pin [female])

mini Din
(8Pin)

4 Pin

3-702-691-01
Connector Attachment

3

To BUS CONNECTOR

4 Pin

4 Pin

•

Set DY four-pole magnet to mechanical center
before adjustment.
This should be prime mode.

•

1.

Enter the full white signal.

2.

Adjust the contrast to the maximum.

3.

Make the screen monogreen.

4.

Reverse the DY, and adjust coarsely the purity magnet so that
a green raster positions in the center of screen.

5.

Moving the DY forward, adjust so that an entire screen be-
comes monogreen.

6.

Adjust the tilt of DY, and fix lightly with a clamp.

•

1.

Place the set in the Helmholtz coil.

2.

Enter a green signal only.

3.

Degauss the entire screen with hand-degausser.

4.

Attach a wobbling coil to the specified position of CRT neck.

5.

Attach a landing adjuster sensor on the CRT.

6.

Using a landing checker, adjust the DY position, purity, tilt of
DY.

7.

Clamp the DY screw.

Clamping torque: 19 ± 1kgcm (1.9 ± 0.1 N.m)

•

1.

Enter the white crosshatch signal.

2.

Adjusut roughly the horizontal and vertical
convergence at four-pole magnet.

3.

Adjusut roughly HMC and VMC at six-pole
magnet.

*

*

1)

Receive R.B. cross-hatch.

2)

Adjust H.STAT nad V.STAT at four-pole magnet.

1

2

1

2

B

R

1

2

R

B

B

R

1 2

+

R

B

1

2

B

R

R

B

1 2

+

NECK Assy

6PoleMg

P.S Mg

XBV

DY

CRT

4Pole Mg

– 16 –

3)

Receive White cross-hatch.

4)

Adjust HMC and VMC at six-pole magnet.

1

2

1

2

G

G

5)

Receive R.B. cross-hatch.

6)

Repeat the above procedure so that R.G.B. will on X,Y axis.

7)

Adjust H.TILT by swinging the DY neck right and left.

8)

Adjust XCV with XCV core.

1 XCV movement

B

R

10) Adjust Y.CLOTH with YCH VR.

YCH movement

B

R

11) Paint lock the four-pole and six-pole Mg.

TLV

XCV

YCH

9)

Adjust V.TILT with TLV VR.
TLV movement

R
B

R
B

•

•

•

(1) 9300K

x = 0.283 ± 0.005
y = 0.298 ± 0.005

(2) 6500K

x = 0.313 ± 0.005
y = 0.329 ± 0.005

(3) 5000K

x = 0.345 ± 0.005
y = 0.358 ± 0.005

•

B

A

0.30 mm

A

0.35 mm

B

All mode

MODE

Purity

4-Pole Mg

6-Pole Mg

A

270 mm

B

MODE All mode

202 mm

a     2.5 mm
b     2.5 mm

a

B

A

b

FBT

Focus (V)

A board

Focus (H)