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5-43

Mode

Camera record and playback

Subject

Arbitrary

Measurement Point

Pin @º of CN2904 (RF MON) on
VC-220 board (Note 1)
External trigger: Pin !¶ of CN2904
(SWP)

Measuring Instrument

Oscilloscope

Adjustment Page

C

Adjustment Address

18, 19, 1B, 1C, 21, 73

Specified Value

The display data of page: 3,
address: 03 is “00”

Connect a 75

Ω

 resistor between Pin @º and Pin !ª (GND) of

CN2904.
75

Ω

 resistor (Parts code: 1-247-804-11)

The “5. AGC Center Level Adjustment” must have already been
completed before starting this adjustment.

Adjusting method:
1)

Select page: 0, address: 01, and set data: 01.

2)

Select page: 2, address: 30, and set data: 40.

3)

Record the camera signal for a minute.

4)

Playback the recorded segment.

5)

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

6)

Check that the playback RF signal is stable.

7)

Select page: 3, address: 01, set data: 07, and press the PAUSE
button of the adjustment remote commander.

8)

Select page: 3, address: 02, and check that the data changes
from “07” to “00” in about 15 seconds after pressing the PAUSE
button.

9)

Select page: 3, address: 03, and check that the data is “00”.

If the data of page: 3, address: 03 is other than “00”, adjustment
has errors. (Take an appropriate remedial measures according
to the errors referring to the following table. )

10) Select page: 3, address: 33, and set data: 00.
11) Select page: 2, address: 30, and set data: 00.
12) Select page: 0, address: 01, and set data: 00.

If this data is displayed twice successively, the machine is defective.
(Note4)

Select page: C, address: 24, and change the data from “0F” to
“0D” or “0E”, and perform re-adjustment. If this data of page: 3,
address: 03 is “00” at step.9), the machine is not defective.

Data of page: 3,
address: 03

20

30

50

60

80

Contents of defect

Perform re-adjustment. (Note 3)

The machine is defective. (Note4)

Perform re-adjustment. (Note 3)

The machine is defective. (Note4)

The machine is defective. (Note4)

Mode

VTR playback

Signal

Arbitrary

Measurement Point

Display data of page: 3, address: 03

Measuring Instrument

Adjustment remote commander

Adjustment Page

C

Adjustment Address

1F, 20, 22, 47

Specified Value

00

Adjusting method:
1)

Select page: 0, address: 01, and set data: 01.

2)

Select page: 3, address: 01, set data: 30, and press the PAUSE
button of the adjustment remote commander.

3)

Select page: 3, address: 02, and check that the data changes to
“00”.

4)

Select page: 3, address: 03, and check that the data is “00”.

If the data of page: 3, address: 03 is other than “00”, there are
errors. (For the error contents, see the following table. For the
bit values, refer to “5-4. SERVICE MODE”, “4-3. 3. Bit value
discrimination”. )

5)

Select page: 0, address: 01, and set data: 00.

Bit value of page: 3,

Error contents

address: 03

bit 4 = 1

PLL f

0

, even channel is defective

bit 5 = 1

PLL f

0

, odd channel is defective

bit 6 = 1

LPF f

0

 is defective

bit 3 = 1

PLL f

0

 final adjustment is defective

Pin 

@º

Pin 

!¶

PB RF signal is stable

6.7 msec

Fig. 5-3-7.

5-44

Before perform the video system adjustments, check that the
specified value of “36 MHz Origin Oscillation Adjustment” of
“CAMERA SYSTEM ADJUSTMENT” is satisfied.

Set the center frequency of IC1402 chroma band-pass filter.

Mode

VTR stop

Signal

No signal

Measurement Point

CH1: Chroma signal terminal of
S VIDEO jack (75 

Ω

 terminated)

CH2: Y signal terminal of S VIDEO
jack (75 

Ω

 terminated)

Measuring Instrument

Oscilloscope

Adjustment Page

C

Adjustment Address

2B

Specified Value

A = 100mVp-p or less
B = 200mVp-p or more

DISPLAY (Menu setting) ............................. V-OUT/LCD
DISPLAY (FK-4750 block) ......................................... ON

Adjusting method:
1)

Check that the burst signal (B) is output to the chroma signal
terminal of S VIDEO jack.

2)

Select page: 0, address: 01, and set data: 01.

3)

Select page: 3, address: 0C, set data: 04, and press the PAUSE
button of the adjustment remote commander.

4)

Select page: C, address: 2B, and change the data for minimum
amplitude of the burst signal level (A).
(The data of address: 2B, should be “00” to “07”.)

5)

Press the PAUSE button of the adjustment remote commander.

6)

Select page: 3, address: 0C, set data: 00, and press the PAUSE
button of the adjustment remote commander.

6)

Check that the burst signal level (B) is satisfied the specified
value.

7)

Select page: 0, address: 01, and set data: 00.

Mode

Camera

Subject

Arbitrary

Measurement Point

Y signal terminal of S VIDEO jack
(75 

Ω

 terminated)

Measuring Instrument

Oscilloscope

Adjustment Page

C

Adjustment Address

25

Specified Value

A = 1000 ± 14mV

Adjusting method:
1)

Select page: 0, address: 01, and set data: 01.

2)

Select page: 2, address: 35. After note down the data of this
address, set data: 01 to the address.

3)

Select page: 3, address: 0C, set data: 02, and press the PAUSE
button of the adjustment remote commander.

4)

Select page: C, address: 25, change the data and set the Y signal
level (A) to the specified value.

5)

Press the PAUSE button of the adjustment remote commander.

6)

Select page: 3, address: 0C, set data: 00, and press the PAUSE
button of the adjustment remote commander.

7)

Select page: 2, address: 35. and set the data that is noted down
at step 2).

8)

Select page: 0, address: 01, and set data: 00.

Fig. 5-3-9.

CH1

CH2

A

H

H

CH1

B

Fig. 5-3-8.

H

Center of luminance line

A

5-45

 Mode

Camera

Subject

Arbitrary

Measurement Point

Chroma signal terminal of S VIDEO
jack (75 

Ω

 terminated)

External trigger: Y signal terminal of
S VIDEO jack

Measuring Instrument

Oscilloscope

Adjustment Page

C

Adjustment Address

26, 27

Specified Value

Cr level:

A = 714 ± 14mV(NTSC)
A = 700 ± 14mV(PAL)

Cb level:

B = 714 ± 14mV(NTSC)
B = 700 ± 14mV(PAL)

Burst level: C = 286 ± 6mV(NTSC)

C = 300 ± 6mV(PAL)

Adjusting method:
1)

Select page: 0, address: 01, and set data: 01.

2)

Select page: 2, address: 35. After note down the data of this
address, set data: 01 to the address.

3)

Select page: 3, address: 0C, set data: 02, and press the PAUSE
button of the adjustment remote commander.

4)

Select page: C, address: 26, change the data and set the Cr
signal level (A) to the specified value.

5)

Press the PAUSE button of the adjustment remote commander.

6)

Select page: C, address: 27, change the data and set the Cb
signal level (B) to the specified value.

7)

Press the PAUSE button of the adjustment remote commander.

8)

Check that the burst signal level (C) is satisfied the specified
value.

9)

Select page: 3, address: 0C, set data: 00, and press the PAUSE
button of the adjustment remote commander.

10) Select page: 2, address: 35. and set the data that is noted down

at step 2).

11) Select page: 0, address: 01, and set data: 00.

Mode

Camera

Subject

Arbitrary

Measurement Point

Video terminal of AUDIO/VIDEO
jack (75 

Ω

 terminated)

Measuring Instrument

Oscilloscope

Specified Value

Sync level: A = 286 ± 18mV(NTSC)

A = 300 ± 18mV(PAL)

Burst level: B = 286 ± 18mV(NTSC)

B = 300 ± 18mV(PAL)

Adjusting method:
1)

Select page: 2, address: 35. After note down the data of this
address, set data: 01 to the address.

2)

Select page: 3, address: 0C, set data: 02, and press the PAUSE
button of the adjustment remote commander.

3)

Check that the sync signal level (A) satisfies the specified value.

4)

Check that the burst signal level (B) satisfies the specified value.

5)

Select page: 3, address: 0C, set data: 00, and press the PAUSE
button of the adjustment remote commander.

6)

Select page: 2, address: 35. and set the data that is noted down
at step 1).

Fig. 5-3-10.

Fig. 5-3-11.

H

C

A

0.28 

µ

sec (NTSC)

0.23 

µ

sec (PAL)

B

0.28 

µ

sec (NTSC) 

0.23 

µ

sec (PAL)

H

B

A

5-46

Set the VCO center level of the video input circuit (IC1200).

Mode

VTR stop

Signal

Color bar (Video terminal of AUDIO/
VIDEO jack input)

Measurement Point

Display data of page: 3, address: 04

Measuring Instrument

Adjustment remote commander

Adjustment Page

F

Adjustment Address

4D

Specified Value

08 or 09 (Note 1), 08 to 0A (Note 2)

When the data of page: F, address: 4D is “00” to “FE”.

When the data of page: F, address: 4D is “FF”.

Adjusting method:
1)

Select page: 0, address: 01, and set data: 01.

2)

Select page: 3, address: 0C, set data: 80, and press the PAUSE
button of the adjustment remote commander.

3)

Select page: F, address: 4D, and set data: 00, and press the
PAUSE button.

4)

Select page: 3, address: 04, and check. If the data is “08” or
“09”, proceed to step 7).

5)

Select page: F, address: 4D, add “10”(hexadecimal) to the data
and press the PAUSE button.

If the data of page: F, address: 4D is “F0”, change the data to
“FF” and press the PAUSE button.

6)

Select page: 3, address: 04, and check the data satisfies the
specified value. If not repeat steps 5) to 6).

7)

Select page: 3, address: 0C, set data: 00, and press the PAUSE
button of the adjustment remote commander.

8)

Select page: 0, address: 01, and set data: 00.