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6-34

6. Center Level Adjustment (PD-217 board)
Set the video signal center level of LCD panel to an appropriate
level.

Mode

VTR stop

Signal

No signal

Measurement Point

Pin 1 of CN2105 (VG)

Measuring Instrument

Digital voltmeter

Adjustment Page

D

Adjustment Address

AB

Specified Value

A = 7.00 

±

 0.05Vdc

1

0

01

01

Set the data.

2

3

0C

20

Set the data, and press PAUSE
button.

3

3

22

08

Set the data, and press PAUSE
button.

4

D

AB

Change the data and set the DC
voltage (A) to the specified
value.
(The data should be “00” to
“7F”.)

5

D

AB

Press PAUSE button.

6

3

0C

00

Set the data, and press PAUSE
button.

7

3

22

00

Set the data, and press PAUSE
button.

8

0

01

00

Set the data.

5. Contrast Adjustment (PD-217 board)
Set the level of the VIDEO signal for driving the LCD to the specified
value. If deviated, the screen image will be blackish or saturated
(whitish).

Mode

VTR stop

Signal

No signal

Measurement Point

Pin 1 of CN2105 (VG)

Measuring Instrument

Oscilloscope

Adjustment Page

D

Adjustment Address

AA

Specified Value

A = 2.70 

±

 0.05V

1

0

01

01

Set the data.

2

D

AA

Change the data and set the
voltage (A) between the 3 steps
peak and pedestal to the
specified value.
(The data should be “00” to
“7F”.)

3

D

AA

Press PAUSE button.

4

0

01

00

Set the data.

5

Check that the specified value of
“Bright Adjustment” is satisfied.

Fig. 6-1-23.

6-35

7. V-COM Adjustment (PD-217 board)
Set the DC bias of the common electrode drive signal of LCD to the
specified value.
If deviated, the LCD display will move, producing flicker and
conspicuous vertical lines.

Mode

VTR stop

Signal

No signal

Measurement Point

Check on LCD display

Measuring Instrument

Adjustment Page

D

Adjustment Address

A4

Specified Value

The brightness difference between the
section A and section B is minimum.

Note: Perform “Bright Adjustment”, “Black Limit Adjustment”, “Contrast

Adjustment” and “Center Level Adjustment” before this adjustment.

1

0

01

01

Set the data.

2

D

B0

Write down the data.

3

D

B0

CA

Set the data, and press PAUSE
button.

4

D

A4

Change the data so that the
brightness of the section A and
that of the section B is equal.

5

D

A4

Subtract 1 from the data.

6

D

A4

Press PAUSE button.

7

D

B0

Write the data that was written
down in the step 2.

8

D

B0

Press PAUSE button.

9

0

01

00

Set the data.

A

A

A

A

B

B

B

B

Fig. 6-1-24.

8. White Balance Adjustment (PD-217 board)
Correct the white balance.
If deviated, the reproduction of the LCD screen may degenerate.

Mode

VTR stop

Signal

No signal

Measurement Point

Check on LCD screen

Measuring Instrument

Adjustment Page

D

Adjustment Address

A8, A9

Specified Value

The LCD screen should not be
colored.

Note1: Check the white balance only when replacing the following parts.

If necessary, adjust them.

1. LCD panel
2. Light induction plate
3. IC2101

Note2: Use the AC power adaptor.

1

0

01

01

Set the data.

2

D

A8

85

Set the data, and press PAUSE
button.

3

D

A9

75

Set the data, and press PAUSE
button.

4

D

A9

Check that the LCD screen is
not colored. If not colored,
proceed to step 10.

5

D

A8

Change the data so that the LCD
screen is not colored.

6

D

A8

Press PAUSE button.

7

D

A9

Change the data so that the LCD
screen is not colored.

8

D

A9

Press PAUSE button.

9

D

A9

If the LCD screen is colored,
repeat steps 5 to 9.

10

0

01

00

Set the data.

6-36

On the mechanism section adjustment
For details of mechanism section adjustments, checks,
and replacement of mechanism parts, refer to the separate
volume “DV MECHANICAL ADJUSTMENT MANUAL 
C Mechanism  ”.

1)

Connect the adjustment remote commander to the LANC jack.

2)

Turn the HOLD switch of the adjustment remote commander
to the ON position.

3)

Close the cassette compartment without the cassette.

4)

Select page: 3, address: 01, set data: 0C, and press the PAUSE
button of the adjustment remote commander.
(The mechanism enters the record mode automatically.)

Note: The function buttons become inoperable.

5)

To quit the record mode, select page: 3, address: 01, set data:
00, and press the PAUSE button of the adjustment remote
commander.  (Whenever you want to quit the record mode, be
sure to quit following this procedure.)

1)

Connect the adjustment remote commander to the LANC jack.

2)

Turn the HOLD switch of the adjustment remote commander
to the ON position.

3)

Close the cassette compartment without the cassette.

4)

Select page: 3, address: 01, set data: 0B, and press the PAUSE
button of the adjustment remote commander.
(The mechanism enters the playback mode automatically.)

Note: The function buttons become inoperable.

5)

To quit the playback mode, select page: 3, address: 01, set data:
00, and press the PAUSE button of the adjustment remote
commander.  (Whenever you want to quit the playback mode,
be sure to quit following this procedure.)

1. Preparation for Adjustment
1)

Clean the tape running side (tape guide, drum, capstan shaft,
pinch roller, etc.).

2)

Connect the adjustment remote commander to the LANC jack.

3)

Turn the HOLD switch of the adjustment remote commander
to the ON position.

4)

Connect an oscilloscope to VC-358 board CN007 via the CPC-
13 jig (J-6082-443-A).

Channel 1: VC-358 board, CN007 Pin 2 (Note)
External trigger: VC-358 board, CN007 Pin 3

Note: Connect a 75 

Ω

 resistor between pins 2 of CN007 and 1

(GND).
75 

Ω

 resistor (Parts code: 1-247-804-11)

5)

Playback the alignment tape for tracking. (XH2-1)

6)

Select page: 3, address: 33, and set data: 08.

7)

Select page: 3, address: 26, and set data: 31.

8)

Check that the oscilloscope RF waveform is normal at the
entrance and exit.
If not normal, adjust according to the separate volume
“DV MECHANICAL ADJUSTMENT MANUAL 
C Mechanism ” .

2. Procedure after operations
1)

Connect the adjustment remote commander to the LANC jack
and set the HOLD switch to the ON position.

2)

Select page: 3, address: 26, and set data: 00.

3)

Select page: 3, address: 33, and set data: 00.

Fig. 6-2-1.

1

2

3

4

5

6

7

8

9

10

GND

RF MON

SWP

RF IN/LANC JACK IN

TDO

GND

TCK

TDI

PANEL COM

TMS

11

12

13

14

15

16

17

18

19

20

H START

XHD/PSIG

EVF VB

EVF VR

EVF VCO

GND

EVF BL –

EVF VG

LANC SIG

EVF BL +

6-37

Use the following measuring instruments for video section
adjustments.

1)

TV monitor

2)

Oscilloscope (dual-phenomenon, band above 30 MHz with
delay mode) (Unless specified otherwise, use a 10 : 1 probe.)

3)

Frequency counter

4)

Pattern generator with video output terminal.

5)

Digital voltmeter

6)

Audio generator

7)

Audio level meter

8)

Audio distortion meter

9)

Audio attenuator

10) Regulated power supply
11) Alignment tapes

• Tracking standard (XH2-1)

Parts code: 8-967-997-01

• SW/OL standard (XH2-3)

Parts code: 8-967-997-11

• Audio operation check for NTSC (XH5-3)

Parts code: 8-967-997-51

• System operation check for NTSC (XH5-5)

Parts code: 8-967-997-61

• BIST check for NTSC (XH5-6)

Parts code: 8-967-997-71

• Audio operation check for PAL (XH5-3P)

Parts code: 8-967-997-55

• System operation check for PAL (XH5-5P)

Parts code: 8-967-997-66

• BIST check for PAL (XH5-6P)

Parts code: 8-967-997-76

12) Adjustment remote commander (J-6082-053-B)
13) CPC-13 jig (J-6082-443-A)
14) Extension cable (50P, 0.5 mm)

For extension between the CD-512 board (CN100) and the VC-
358 board (CN025) (J-6082-496-A)