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•

Perform the adjustment using the color bar signal as a video
signal input for VIDEO terminal.

•

The items to be adjusted for the R channel will be indicated
within the [ ], in regard to the adjusting items to be adjusted for
both L and R channels.

•

Set the Hi-Fi sound switch in the menu display to “STEREO”
position unless specified otherwise.

1) When inputting the audio signal, input the same signal to both

the L and R channels, unless specified otherwise.

2) Be sure to insert the plug (Shorting plug or dummy plug, etc)

into the AUDIO terminal (Right). If the plug is not inserted, the
monaural mode well be set, and correct adjustments can not be
carried out.
[Monaural mode]
During recording ............... REC AFM RF 1.7MHz carriear will

not be output.

During playback ................ The L+R signal will be output from

the AUDIO terminal (Left).

Connect the audio system measuring instruments in addition to the
video system measuring instruments as shown in Fig. 5-3-17, and
perform adjustments at the power switch [VTR] or [PLAYER]
position.

1) 1.5 MHz deviation adjustment
2) 1.7 MHz deviation adjustment
3) BPF adjustment

TP33(GND)
TP32(R OUT 1) 

B

TP31(L OUT 1) 

A

 

TP30(R OUT 2)
TP29(L OUT 2)

CN1

J3

J1(R)

J2(L)

S2

PAL         NT

INV        SIN

S3

S1

ST

BIL

CH1

CH2

TP27

(GND)

TP28 (DC)

+

-

(+7Vdc to +9Vdc)

(J-6082-312-A)

AFM DEV jig

TP2(R OUT)

B

TP1(GND)

TP3(L OUT)

A

A

: 1.5MHz deviation adjustment.

B

: 1.7MHz deviation adjustment.

When connecting AFM DEV jig.

CN1

TP25

TP24

TP26

B

A

Stabilized power supply

Oscilloscope

Red

White

White

Red

L

R

To Audio terminal

VC-195 board

IC301 

@ª

 PIN

(REC AFM)

0.01 

µ

F

(1-101-004-00)

CN910 

!¡

 PIN

(RF SWP)

CN910 

8

 PIN

(GND)

Use the CPC-7 jig
(J-6082-382-A)

Pattern generator

In Recording

In Playback

Audio
oscillator

Video output

(75 

Ω

)

Attenuator

600 

Ω

600 

Ω

 (270 

Ω

 (1-249-410-11) + 330 

Ω

 (1-249-411-11))

VIDEO

Main unit

L

R

AUDIO

Audio level meter or
distortion meter

47k

Ω

47k

Ω

 : 1-249-437-11

VIDEO

Main unit

L

R

AUDIO

TV monitor

47k

Ω

 : 1-249-437-11

CN2

Sets the spectrum of the L-ch ((L+R)/2 signal) level modulated
during recording. If deviated, the crosstalk signal of the audio signal
will occur and the audio level will drop during both playback and
recording.

Mode

VTR recording

Signal

Input the AFM DEV jig output signal to
the left and right audio input terminal

Measurement Point

CH1: AFM DEV jig TP31
CH2: AFM DEV jig TP3

Measuring Instrument

Oscilloscope

ADD mode
CH2 INV mode

Adjustment Page

F

Adjustment Address

45

Specified Value

The level difference between CH1 signal

and CH2 signal should be minimum.

Connection:
1) Connect TP24 and TP26 of the AFM DEV jig to CN910 of the

VC-195 board.

TP24(GND) ...................... Pin 

8 of CN910

TP26(RF SWP) ................. Pin 

!¡ of CN910

2) Connect TP25 (REC AFM) of the AFM DEV jig to Pin 

@ª of

IC301 with a 0.01

µ

F capacitor (1-101-004-00).

3) Connect the audio output terminal (J1 and J2) of the AFM DEV

jig to AUDIO terminal of the unit.

4) Connect TP28 (DC), TP27 (GND) of the AFM DEV jig to the

DC power supply (+7Vdc to +9Vdc).

5) Set the AFM DEV jig switches to the following positions.

S1 ............................... BIL Position
S2 ............................... PAL Position
S3 ............................... SIN Position

Preparations only for the model without REC switch:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: D, address: 14, after memorizing the data, set the

bit value of bit1 to “1”. (Refer to “3. Bit value discrimination”
of “3-1-8. Service Mode”).

3) Select page: D, address: 15, after memorizing the data , set the

bit value of bit7 to “0”.

4) Set to recording mode. (Use the wireless remote commander

of 8mm VCR, or connect Pin 

6 of CN935 of DD-105 board

and GND with 4.7k

Ω

 resistor for a second.)

4.7k

Ω

 resistor : 1-249-425-11

Approx. 2msec

A

Adjusting method :
1) Match the vertical ranges of CH1 and CH2 of the oscilloscope

to each other.

2) Set the oscilloscope to the ADD mode and CH2 to the INV

(invert) mode.

3) Select page: 0, address: 01, and set data: 01.
4) Select page: F, address: 45, change the data and minimize the

audio signal level difference (A).

5) Press the PAUSE button of the adjusting remote commander.
6) Select page: 0, address: 01, and set data: 00.

Processing after completed adjustment: only for the model without
REC switch:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: D, address: 14, and set the data memorized at step

2) of “Preparations only for the model without REC switch”.

3) Press the PAUSE button of the adjusting remote commander.
4) Select page: D, address: 15, and set the data memorized at step

3) of “Preparations only for the model without REC switch”.

5) Press the PAUSE button of the adjusting remote commander.
6) Select page: 0, address: 01, and set data: 00.

Sets the spectrum of the R-ch ((L-R)/2 signal) level modulated during
recording. If deviated, the crosstalk signal of the audio signal will
occur and the audio level will drop during both playback and
recording.

Mode

VTR recording

Signal

Input the AFM DEV jig output signal to
the left and right audio input terminal

Measurement Point

CH1: AFM DEV jig TP32
CH2: AFM DEV jig TP2

Measuring Instrument

Oscilloscope

ADD mode
CH2 normal mode

Adjustment Page

F

Adjustment Address

46

Specified Value

The level difference between CH1 signal

and CH2 signal should be minimum.

Connection:
1) Connect TP24 and TP26 of the AFM DEV jig to CN910 of the

VC-195 board.

TP24 (GND) ..................... Pin 

8 of CN910

TP26 (RF SWP) ................ Pin 

!¡ of CN910

2) Connect TP25 (REC AFM) of the AFM DEV jig to Pin 

@ª of

IC301 with a 0.01

µ

F capacitor (1-101-004-00).

3) Connect the audio output terminal (J1 and J2) of the AFM DEV

jig to AUDIO terminal of the unit.

4) Connect TP28 (DC), TP27 (GND) of the AFM DEV jig to the

DC power supply (+7Vdc to +9Vdc).

5) Set the AFM DEV jig switches to the following positions.

S1 ............................... BIL Position
S2 ............................... PAL Position
S3 ............................... INV Position

Preparations only for the model without REC switch:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: D, address: 14, after memorizing the data, set the

bit value of bit1 to “1”. (Refer to “3. Bit value discrimination”
of “3-1-8. Service Mode”).

3) Select page: D, address: 15, after memorizing the data , set the

bit value of bit7 to “0”.

4) Set to recording mode. (Use the wireless remote commander

of 8mm VCR, or connect Pin 

6 of CN935 of DD-105 board

and GND with 4.7k

Ω

 resistor for a second.)

4.7k

Ω

 resistor : 1-249-425-11

Approx. 2msec

A

Adjusting method :
1) Match the vertical ranges of CH1 and CH2 of the oscilloscope

to each other.

2) Set the oscilloscope to the ADD mode and CH2 to the normal

mode.

3) Select page: 0, address: 01, and set data: 01.
4) Select page: F, address: 46, change the data and minimize the

audio signal level difference (A).

5) Press the PAUSE button of the adjusting remote commander.
6) Select page: 0, address: 01, and set data: 00.

Processing after completed adjustment: only for the model without
REC switch:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: D, address: 14, and set the data memorized at step

2) of “Preparations only for the model without REC switch”.

3) Press the PAUSE button of the adjusting remote commander.
4) Select page: D, address: 15, and set the data memorized at step

3) of “Preparations only for the model without REC switch”.

5) Press the PAUSE button of the adjusting remote commander.
6) Select page: 0, address: 01, and set data: 00.

Sets the BPF passing frequency so that the AFM signal can separate
from the playback RF signal properly. If deviated. the mono/stereo
mode will be differentiated incorrectly, and noises and distortions
will increase during high volume playback.

Mode

Playback

Signal

Alignment tape:

For BPF adjustment
(WR5-11CS)

Measurement Point

Audio output terminal left or right

Measuring Instrument

distortion meter

Adjustment Page

F

Adjustment Address

47

Specified Value

The Main and Sub channel distortion
rate should be almost the same
(within

±

1%) and minimum.

Adjusting method :
1) Select page: 0, address: 01, and set data: 01.
2) Set the Hi-Fi sound switch (menu display) to “2”.
3) Select page: F, address: 47, change the data and minimize the

distortion rate.

4) Press the PAUSE button of the adjusting remote commander.
5) Set the Hi-Fi sound switch (menu display) to “1”.
6) Select page: F, address: 47, change the data and minimize the

distortion rate.

7) Press the PAUSE button of the adjusting remote commander.
8) Repeat steps 2) to 7) and set the data of address: 47 so that the

distortions rates when the Hi-Fi sound switch is set to “2” and
set to “1” respectively are almost the same and minimum.

9) Press the PAUSE button of the adjusting remote commander.
11) Select page: 0, address: 01, and set data: 00.
12) Set the Hi-Fi sound switch to “STEREO”.

[Connecting the measuring instruments for the audio]
Connect the audio system measuring instruments besides the video
system measuring instruments as shown Fig. 5-3-20.

Audio
generator

Attenuator

600 

Ω

Parts cord 600 

Ω

 :

270 (1-249-410-11) + 330 (1-249-411-11)

AUDIO
terminal

Audio level meter
or distortion meter

47k

Ω

Parts cord 47k

Ω

 : 1-249-437-11

AUDIO
terminal

• Connection of Audio generator and attenuator.

• Connection of Audio level meter or distortion meter