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CPD-E540 (E)

1-6

4

Picture tube

1

Anode cap (Refer to 1-8)

2

A1 board (C block)

3

Neck assembly

CN1

CN2

CN3

CN2

GND

CPD-E540 (E)

1-7

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 sharp shaped
material!

2

Don’t press the rubber hardly not to damage 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

.

CPD-E540 (E) 1-8

CN602

CN601

CN604

CN1102

CN312

CN311

CN318

CN319

CN320

CN316

CN315

CN303

CN1103

CN1400

CN1401

CN701

CN501

CN1601

CN1600

CN1602

CN2

CN1

CN1

CN3

CN1003

CN904

4P

4P

D board

A1 board

N board

L2 board

H1 board

Picture tube

AC inlet (3P)

CPD-E540 (E)

2-1

HV Regulator
Circuit Check

HV Protector
Circuit Check

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.

Part Replaced (

[)

RV901

HV ADJ

*

Confirm one minute after turning on the power.

1) Turn the RV901 slowly, and adjustment so that high

voltage is in the specified range.

[Specification]: 27.00 

±

 0.05 kV

2) Check that the voltage of D912 cathode on the D

board is 17.0 V or more.

1) Using external DC Power Supply, apply the voltage

shown below between cathode of D912 and GND,

and check that the RASTER disappers.

[Specification]: 19.95 + 0.00/– 0.05 V

Part Replaced (

])

D Board C925, IC901, R901,

R902, R905, R924,
R925, R926, RV901,
T901 (FBT)
• Mounted D Board

D Board C920, C923, D911,

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

N Board IC1001, RB1001

• Mounted N Board

Beam Current
Protector Circuit
Check

Part Replaced (

])

D Board C930, D917, R921,

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

N Board IC1001, RB1001

• Mounted N Board