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5-13

Mode

VTR stop

Measurement Point

ODDch adjustment
CH1: Pin 

5 of CN2708 (CL2718)

CH2: Pin 

6 of CN2708 (CL2719)

EVENch adjustment
CH1: Pin 

9 of CN2708 (CL2722)

CH2: Pin 

8 of CN2708 (CL2721)

Measuring Instrument

Oscilloscope

ADD mode
CH2 INV mode

Adjustment Page

C

Adjustment Address

3E, 3F

Specified Value

A = 3.1 ± 0.1 Vp-p

Connection:
Disconnect CN2708 and connect as follows.
1)

ODDch adjustment: Connect a 180 

Ω

 resistor between Pin 

5

of CN2708 (CL2718) and Pin 

6 of CN2708 (CL2719).

2)

EVENch adjustment: Connect a 180 

Ω

 resistor between Pin

9 of CN2708 (CL2722) and Pin 8 of CN2708 (CL2721).
180 

Ω 

resistor (Parts code: 1-249-408-11)

Adjusting method:
1)

Equalize the vertical range of CH1 and CH2 of the oscilloscope.

2)

Set the oscilloscope to the ADD mode, and set CH2 to the INV
mode.

3)

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

4)

Select page: 3, address: 01, set data: 0C, and press the PAUSE
button of the Adjustment remote commander.

5)

Select page: 3, address: 34, and set data: 01.

6)

Select page: C, address: 3F (ODDch adjustment) or address:
3E (EVENch adjustment), change the data and adjust the signal
voltage (A) to the specified value.

7)

Press the PAUSE button of the adjustment remote commander.

8)

Select page: 3, address: 34, and set data: 04.

9)

Select page: 3, address: 01, set data: 00, and press the PAUSE
button of the Adjustment remote commander.

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

Fig. 5-3-4

A

0.1 

µ

sec

Mode

VTR stop

Measurement Point

Display data of page: 3, address: 04

Measuring Instrument

Adjustment remote commander

Adjustment Page

C

Adjustment Address

3C, 3D

Specified Value

Displayed data is “FD” to “FF” or
“00” to “03”. (“FF”, “00” are center
values)

Adjusting method:
1)

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

2)

Select page: 3, address: 01, set data: 05, and press the PAUSE
button of the Adjustment remote commander.

3)

Select page: 3, address: 36, and set data: 04.

4)

Select page: 3, address: 04, and check that the average value
D

04

 of the displayed data is “FD” to “FF” or “00” to  “03”. If

outside this range, change the data of page: C, address: 3C,
and check again.

[ If D

04

 is “80” to “FC” ]

Decrease the data of page: C, address: 3C. (As the data is to be
rewritten, press the PAUSE button of the adjustment remote
commander.)

[ If D

04

 is “04” to “7F” ]

Increase the data of page: C, address: 3C. (As the data is to be
rewritten, press the PAUSE button of the adjustment remote
commander.)

5)

Select page: 3, address: 36, and set data: 05.

6)

Select page: 3, address: 04, and check that the average value
D04 of the displayed data is “FD” to “FF” or “00” to  “03”. If
outside this range, change the data of page: C, address: 3D,
and check again.

[ If D

04

 is “80” to “FC” ]

Decrease the data of page: C, address: 3D. (As the data is to be
rewritten, press the PAUSE button of the adjustment remote
commander.)

[ If D

04

 is “04” to “7F” ]

Increase the data of page: C, address: 3D. (As the data is to be
rewritten, press the PAUSE button of the adjustment remote
commander.)

7)

Select page: 3, address: 01, set data: 00, and press the PAUSE
button of the adjustment remote commander.

8)

Select page: 3, address: 36, and set data: 02.

9)

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

5-14

Mode

Recording /playback
(LP mode)

Signal

Color bar

Measurement Point

CH1: Pin 

#¡ of CN9930

     (C1ERP) on CB-61 board
CH2: Pin 

!§ of CN9928 (JSWP) on

CB-61 board

Measuring Instrument

Oscilloscope

Trigger source: CH2

Adjustment Page

C

Adjustment Address

47

Adjusting method:
1)

Record for two minutes on any tape.

2)

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

3)

Write the following data in page: C, addresses: 40 to 44, 47,
4B, 5A.
(To write the data, press the PAUSE button of the adjustment
remote commander each time data is set.)

Page: C, address: 40, data: C0
Page: C, address: 41, data: C0
Page: C, address: 42, data: 90
Page: C, address: 43, data: 90
Page: C, address: 44, data: 90
Page: C, address: 47, data: C0
Page: C, address: 4B, data: 80
Page: C, address: 5A, data: 00

4)

Playback the recorded portion.

5)

Increase the data of page: C, address: 47 from “C0”, and read
the data D

1

 when the CH1 pulse is set to the whole audio and

video areas.

6)

Decrease the data of page: C, address: 47 from “C0”, and read
the data D

2

 when the CH1 pulse is set to the whole audio and

video areas.

7)

Obtain the average value of D

1

 and D

2

 , and take it as D

3

.

8)

Select page: C, address: 47, set data: D

3

, and press the PAUSE

button of the adjustment remote commander.

9)

Select page: C, address: 4B, set data: 00, and press the PAUSE
button.

10) Select page: C, address: 5A, set data: 8C, and press the PAUSE

button.

11) Select page: 0, address: 01, and set data: 00.
12) After completing the adjusting, perform “5. AEQ Adjustment”.

Fig. 5-3-5

CH1

CH2

CH1

CH2

EVEN ch

EVEN ch

3.33msec

When the CH1 pulse is not set.

When the CH1 pulse is set.

Mode

Recording /playback
(LP mode)

Signal

Color bar

Measurement Point

CH1: Pin 

#¡ of CN9930

     (C1ERP) on CB-61 board
CH2: Pin 

!§ of CN9928 (JSWP) on

CB-61 board

Measuring Instrument

Oscilloscope

Trigger source: CH2

Adjustment Page

C

Adjustment Address

44

Adjusting method:
1)

Record for two minutes on any tape.

2)

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

3)

Write the following data in page: C, addresses: 40 to 44, 4B,
5A.
(To write the data, press the PAUSE button of the adjustment
remote commander each time data is set.)

Page: C, address: 40, data: C0
Page: C, address: 41, data: C0
Page: C, address: 42, data: 90
Page: C, address: 43, data: 90
Page: C, address: 44, data: 90
Page: C, address: 4B, data: 80
Page: C, address: 5A, data: 00

4)

Playback the recorded portion.

5)

Increase the data of page: C, address: 44 from “90”, and read
the data D

1

 when the CH1 pulse is set to the whole audio and

video areas.

6)

Decrease the data of page: C, address: 44 from “90”, and read
the data D

2

 when the CH1 pulse is set to the whole audio and

video areas.

7)

Obtain the average value of D

1

 and D

2

 , and take it as D

3

.

8)

Select page: C, address: 44, set data: D

3

, and press the PAUSE

button of the adjustment remote commander.

9)

Select page: C, address: 4B, set data: 00, and press the PAUSE
button.

10) Select page: C, address: 5A, set data: 8C, and press the PAUSE

button.

11) Select page: 0, address: 01, and set data: 00.
12) After completing the adjusting, perform “5. AEQ Adjustment”.

Fig. 5-3-6

CH1

CH2

CH1

CH2

EVEN ch

EVEN ch

3.33msec

When the CH1 pulse is not set.

When the CH1 pulse is set.

5-15

Mode

Recording /playback
(LP mode)

Signal

Color bar

Measurement Point

CH1: Pin 

!¢ of CN9928

(RF MONITOR) on CB-61 board
CH2: Pin 

!§ of CN9928 (JSWP) on

CB-61 board

Measuring Instrument

Oscilloscope

Trigger source: CH2

Adjustment Page

C

Adjustment Address

40, 41, 42, 43, 5A

Connect a 75 

Ω 

resister between Pin 

!¢ (RF MONITOR) and Pin

!£ (GND) of CN9928.
75 

Ω 

resister (Parts code: 1-247-804-11)

Adjusting method:
1)

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

2)

Write the following data in page: C, addresses: 40 to 43, 4B,
5A.
(To write the data, press the PAUSE button of the adjustment
remote commander each time data is set.)

Page: C, address: 40, data: C0
Page: C, address: 41, data: C0
Page: C, address: 42, data: 90
Page: C, address: 43, data: 90
Page: C, address: 4B, data: 80
Page: C, address: 5A, data: 00

3)

Record for two minutes from tape top.

4)

Rewind the tape, and play back from the tape top.

5)

When the RF output stabilizes, select page: 3, address: 01, set
data: 07, and press the PAUSE button of the adjustment remote
commander.

6)

About 20 to 30 seconds after pressing the PAUSE button, check
that the data of page: 3, address: 02 changes from “07” to “00”.

7)

Check that the data of page: 3, address: 03 is following value.

When “00” : Normal
When “01” : EVENch is faulty
When “02” : ODDch is faulty
When “03” : EVENch and ODDch are faulty

Perform the following procedure only when “00” is displayed.

8)

Read the data of page: 3, address: 04 to 07, and take the values
as D

04

, D

05

, D

06

 and D

07

.

9)

Select page: C, address: 40, set data: D

04

, and press the PAUSE

button of the adjustment remote commander.

10) Select page: C, address: 42, set data: D

05

, and press the PAUSE

button.

11) Select page: C, address: 41, set data: D

06

, and press the PAUSE

button.

12) Select page: C, address: 43, set data: D

07

, and press the PAUSE

button.

13) Select page: C, address: 4B, set data: 00, and press the PAUSE

button.

14) Select page: C, address: 5A, set data: 8C, and press the PAUSE

button.

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

Mode

Recording /playback
(LP mode)

Signal

Color bar

Measurement Point

CH1: Pin 

#¡ of CN9930

     (C1ERP) on CB-61 board
CH2: Pin 

!§ of CN9928 (JSWP) on

CB-61 board

Measuring Instrument

Oscilloscope

Trigger source: CH2

Adjustment Page

C

Adjustment Address

46

Adjusting method:
1)

Record for two minutes on any tape.

2)

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

3)

Write the following data in page: C, address: 4B and 5A.
(To write the data, press the PAUSE button of the adjustment
remote commander each time data is set.)

Page: C, address: 4B, data: 80
Page: C, address: 5A, data: 00

4)

Playback the recorded portion.

5)

Select page: C, address: 46, set data: 80, and press the PAUSE
button of the adjustment remote commander.

6)

Set the data of page: C, address: 46 to “60”, and check that the
pulse is not set at the audio area head of the C1ERP waveform's
ODDch of the oscilloscope (CH1).

7)

Set the data of page: C, address: 46 to “A0”, and check that the
pulse is not set at the audio area head of the C1ERP waveform's
ODDch of the oscilloscope (CH1). After confirming steps 6)
and 7), set the data of page: C, address: 46 to “80”, and proceed
to step 12).

8)

If the pulse is set in steps 6) and 7), increase the data of page:
C, address: 46 from “80“, and read the data D

1

 when the pulse

is set at the audio area head of CH1.

9)

Decrease the data of page: C, address: 46 from “80“, and read
the data D

2

 when the pulse is set at the audio area head of CH1.

10) Obtain the average value of D

1

 and D

2

 , and take it as D

3

.

11) Select page: C, address: 46, set data: D

3

, and press the PAUSE

button of the adjustment remote commander.

12) Select page: C, address: 4B, set data: 00, and press the PAUSE

button.

13) Select page: C, address: 5A, set data: 8C, and press the PAUSE

button.

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

Fig. 5-3-7

CH1

CH2

CH1

CH2

ODD ch

ODD ch

3.33msec

Pulse is not set at the audio area head.

When the pulse is set at the audio area head.

5-16

Set the sub-carrier frequency of the video output signal in the VTR
mode.

Mode

VTR stop

Signal

No signal

Measurement Point

Pin 

#∞ of CN9921 on CB-61 board

(CK135) or R1114 (Pin 

`⁄‚⁄  of

IC1101)

Measuring Instrument

Frequency counter

Adjustment Page

D

Adjustment Address

98

Specified Value

f = 13500000 ± 68 Hz (NTSC)
f = 13500000 ± 68 Hz (PAL)

Adjusting method:
1)

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

2)

Select page: D, address: 15, after memorizing the data, set the
bit value of bit2 to “0”. (Refer to “4-3, 3. Bit value
discrimination” of “5-4. Service Mode”).

3)

Select page: D, address: 98, change the data and set the clock
frequency (f) to the specified value.

4)

Press the PAUSE button of the adjustment remote commander.

5)

Select page: D, address: 15, and set the data memorized at
step 2). Press the PAUSE button of the adjustment remote
commander.

6)

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

Mode

VTR stop

Signal

No signal

Measurement Point

Display data of page: 2, address: 0E

Measuring Instrument

Adjustment remote commander

Specified Value

“C0” to “FF”

Adjusting method:
1)

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

2)

Select page: D, address: 15, after memorizing the data, set the
bit value of bit2 to “0”. (Refer to “4-3, 3. Bit value
discrimination” of “5-4. Service Mode”).

3)

Select page: 2, address: 05, set data: 02, and press the PAUSE
button of the adjustment remote commander.

4)

Select page: D, address: B0, set data: 03, and press the PAUSE
button.

5)

Select page: 2, address: 0E, and check that the data is “C0” to
“FF”.

6)

Select page: D, address: B0, set data: 05, and press the PAUSE
button.

7)

Select page: 2, address: 0E, and check that the data is “C0” to
“FF”.

8)

Select page: D, address: B0, set data: 00, and press the PAUSE
button.

9)

Select page: 2, address: 05, set data: 00, and press the PAUSE
button.

10) Select page: D, address: 15, and set the data memorized at

step 2).

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

Mode

VTR stop

Signal

No signal

Measurement Point

Display data of page: 3, address: 39

Measuring Instrument

Adjustment remote commander

Specified Value

“37” to “C9”

Checking method:
1)

Select page: 3, address: 39, and check that the data is “37” to
“C9”.