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– 5 –

– 6 –

– 7 –

Use the following test equipment for alignment.
• Oscilloscope dual trace, 10 MHz band or above with delay mode

(use a 10 to 1 probe unless otherwise instructed.)

• PAL color bar generator
• DC power supply
• Digital voltmeter
• XT-981V (Hideaway unit)
• Frequency counter

Make the test equipment connections as shown below (unless
instructed otherwise) and perform the alignment.

INPUT 1
VIDEO

color bar
generator

XT-981V

XVM-612

VIDEO output

(75 

Ω

)

MONITOR OUT

Setting :
DIMMER selector (S701) : HIGH
BRIGHT dial (RV702)

: Max. (light)

VOL dial (RV301)

: Max.

Procedure :
1. Input the color bar (chroma off) signal from PAL color bar gen-

erator and display on the monitor screen.

2. Connect the digital voltmeter to CL66 on the monitor main

board.

3. Adjust RV401 (+5V) so that the digital voltmeter reads 5 

±

 0.1 V

DC.

4. Connect the digital voltmeter to CL86 on the monitor main

board.

5. Adjust RV601 (+9V) so that the digital voltmeter reads 8.5 

±

 0.1 V

DC.

Connection points : Monitor main board
Alignment points : Monitor main board

Procedure :
1. Input the color bar (chroma off) signal from PAL color bar gen-

erator and display on the monitor screen.

2. Connect the digital voltmeter to CL151 on the monitor main

board.

3. Adjust RV213 (OFFSET) so that the digital voltmeter reads 2.3

±

 0.1 V DC.

4. Connect the oscilloscope to CL42 on the monitor main board.
5. Adjust RV212 (COM CUT) so that the lower black level is 6.2

±

 0.05 V DC.

6. Adjust RV208 (COM DRIVE) so that the upper 100% white

level is 9.2 

±

 0.05 V DC.

7. Repeat steps 5 & 6 until the items in the standards are satisfied.
8. Connect the oscilloscope to CL41 of the monitor main board.
9. Adjust RV207 (R DRIVE) so that the lower black level is 6.2 

±

0.05 V DC.

10. Adjust RV202 (R CUT) so that the upper 100% white level is

9.2 

±

 0.05 V DC.

11. Repeat steps 9 & 10 until the items in the standards are satisfied.
12. Connect the oscilloscope to CL43 of the monitor main board.
13. Adjust RV209 (B DRIVE) so that the upper 100% white level

is 6.1 

±

 0.05 V DC.

14. Adjust RV204 (B CUT) so that the upper 100% white level is

9.1 

±

 0.05 V DC.

15. Repeat steps 13 & 14 until the items in the standards are satisfied.

1

2

3

4

5

6

7

8

white level (1st step)

black level (8th step)

0 V

Connection points : Monitor main board
Alignment points : Monitor main board

– 8 –

Procedure :
1. Connect the oscilloscope to CL44 on the monitor main board.
2. Adjust RV210 (V COM AMP) & RV211 (V COM BIAS) so

that the output waveform is within the standards.

3. Repeat step 2 until the standards are satisfied.
Standard values :
A : Adjust RV210 so the value is 4.9 

±

 0.1 Vp-p.

B : Adjust RV211 so the value is 5.1 

±

 0.1 V.

A

B

0 V

Connection points : Monitor main board

RV207

R DRIVE

ADJ

RV208 

COM DRIVE

ADJ

RV213

OFFSET

ADJ

RV212

COM CUT

ADJ

RV202
R CUT

ADJ

RV209
B DRIVE ADJ

RV204
B CUT ADJ

RV210
V COM AMP ADJ

RV211
V COM BIAS ADJ

RV401
+5V ADJ

RV601
+9V ADJ

– MONITOR MAIN BOARD (COMPONENT SIDE) –

– MONITOR MAIN BOARD  (CONDUCTOR SIDE) –

CL44

CL43

CL41

CL66

CL42

CL151

Alignment points : Monitor main board