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5-34
CCD-TR648E/TR748E/TR848
5. REC Y Current Adjustment (VC-272 board)
Adjust the Y FM signal recording current.
Mode
VTR recording (SP mode)
Signal
No signal
Measurement Point
REC RF (Pin 7 of CN713)
Measuring Instrument
Oscilloscope
(20 MHz BW LIMIT: OFF)
(20 MHz BW LIMIT: OFF)
Adjustment Page
F
Adjustment Address
62, 63
Specified Value
A = 235 ± 5mV (NTSC)
A = 280 ± 5mV (PAL)
A = 280 ± 5mV (PAL)
Note1:
Insert a plug into the S VIDEO or the A/V jack.
Note2:
Don’t disconnect the DC power supply of the camcorder during
the following adjustments.
When the following symptom occurs, reset the data of D page to
the values written down.
1) The power is shut off so that unit cannot operate.
the following adjustments.
When the following symptom occurs, reset the data of D page to
the values written down.
1) The power is shut off so that unit cannot operate.
Adjusting method:
Order Page Address Data
Procedure
1
Set to the stop mode.
2
0
01
01
Set the data.
3
D
14
Write down the data.
4
D
14
Set the following data, and press
PAUSE button.
06 (NTSC), 26 (PAL)
PAUSE button.
06 (NTSC), 26 (PAL)
5
D
15
Write down the data.
6
D
15
Set the following data, and press
PAUSE button.
6D (NTSC), 6F (PAL)
PAUSE button.
6D (NTSC), 6F (PAL)
7
Set to VTR recording mode.
(Note3)
(Note3)
8
E
9F
Write down the data.
9
E
9F
06
Set the data, and press PAUSE
button.
button.
10
F
69
Write down the data.
11
F
69
00
Set the data, and press PAUSE
button.
button.
12
2
01
41
Set the data, and press PAUSE
button.
button.
13
6
63
01
Set the data.
14
F
63
Change the data and set the Y signal
level (A) to the specified value.
level (A) to the specified value.
15
F
63
Press PAUSE button.
16
F
63
Read the data, and this data is
named D
named D
63
.
17
F
62
D
63
Set the data, and press PAUSE
button.
button.
18
6
63
00
Set the data.
19
2
01
00
Set the data, and press PAUSE
button.
button.
20
F
69
Set the data written down at step
10, and press PAUSE button.
10, and press PAUSE button.
21
E
9F
Set the data written down at step
8, and press PAUSE button.
8, and press PAUSE button.
22
D
14
Set the data written down at step
3, and press PAUSE button.
3, and press PAUSE button.
23
D
15
Set the data written down at step
5, and press PAUSE button.
5, and press PAUSE button.
24
0
01
00
Set the data.
Note3:
Use the REC buttons of the adjustment remote commander (with
the HOLD switch set in the OFF position).
the HOLD switch set in the OFF position).
A
0.18
µ
sec
Fig. 5-3-8.
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