5-37
CCD-TRV107E/TRV108E/TRV208E/TRV408E
6. REC C/AFM Current Adjustment
6-1. Preparations
Order Page Address Data
Procedure
1
0
01
01
Set the data.
2
D
14
Write down the data.
3
D
14
26
Set the data, and press PAUSE
button.
4
D
15
Write down the data.
5
D
15
6F
Set the data, and press PAUSE
button.
Note:
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.
6-2. REC C Current Check (VC-272 board)
Check the recording current level of the REC Chroma signal. If it is
too low, chroma signal noise in played back picture will be increased.
If too high, Y signal noises will increase and white modulation noises
will be produced.
Mode
VTR recording (SP mode)
Signal
No signal
Measurement Point
REC RF (Pin
7
of CN713)
Measuring Instrument
Oscilloscope
(20 MHz BW LIMIT: OFF)
Specified Value
A = 54.0 ± 3.0mV
Note1:
Insert a plug into the S VIDEO or the A/V jack.
Adjusting method:
Order Page Address Data
Procedure
1
Insert a tape, and set to VTR
recording mode. (Note2)
2
0
01
01
Set the data.
3
2
01
41
Set the data, and press PAUSE
button.
4
6
61
30
Set the data.
5
E
9F
Write down the data.
6
E
9F
05
Set the data, and press PAUSE
button.
7
F
69
Write down the data.
8
F
69
00
Set the data, and press PAUSE
button.
9
Check that the REC chroma signal
level (A) satisfies the specified
value, and write down the signal
level.
10
F
69
Set the data written down at step
7, and press PAUSE button.
11
E
9F
Set the data written down at step
5, and press PAUSE button.
12
6
61
10
Set the data.
13
2
01
00
Set the data, and press PAUSE
button.
14
0
01
00
Set the data.
15
Perform “REC AFM Current
Adjustment” and “Processing after
completed adjustment”.
Note2:
Use the REC buttons of the adjustment remote commander (with
the HOLD switch set in the OFF position).
A
1.35
µ
sec
Center of the luminance line width
Fig. 5-3-9.
