Sony Handycam CCD-TR913E, Руководство по обслуживанию

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5-37
5. C OUT Level Adjustment (VC-214 board)
Set the chroma signal output level. (Adjust the D/A converter out
put level of IC151.)
Mode VTR stop
Signal No signal
Measurement Point Chroma signal terminal of S VIDEO
terminal (75
Ω
terminated )
Measuring Instrument Oscilloscope
Adjustment Page F
Adjustment Address 6B
Specified Value A=300 ± 5mV
Note :
Insert the plug into the S video terminal.
Adjusting method:
1)
Select page: 0, address: 01, and set data: 01.
2) Select page: 2, address: 01, set data: 41, and press the PAUSE
button of the adjustment remote commander.
3) Select page: 6, address: 61, and set data: 30.
4) Select page: F, address: 6B, change the data and set the burst
level (A) to the specified value.
5) Press the PAUSE button of the adjustment remote commander.
6) Select page: 6, address: 61, and set data: 10.
7) Select page: 2, address: 01, set data: 00, and press the PAUSE
button of the adjustment remote commander.
8) Select page: 0, address: 01, and set data: 00.
6. RP Filter f
0
Adjustment (VC-214 board)
Adjust the LPF of the playback RF amplifier (IC001).
Mode VTR stop
Signal No signal
Measurement Point Pin
9
of CN910 (RF AGC OUT)
Measuring Instrument Oscilloscope
Adjustment Page F
Adjustment Address 6E
Specified Value A= Minimum
Connection:
1)
Input a 14.2MHz, 400mVp-p CW signal to Pin
7
of CN910
(RF AGC IN).
Transistor : General NPN transistor (2SC403, etc)
47
Ω
resistor : 1-249-401-11
1 k
Ω
resistor : 1-249-417-11
15 k
Ω
resistor : 1-249-431-11
0.01
µ
F capacitor : 1-101-004-00
Fig. 5-3-10.
Adjusting method:
1)
Select page: 0, address: 01, and set data: 01.
2) Select page: 2, address: 01, set data: 35, and press the PAUSE
button of the adjustment remote commander.
3) Select page: F, address: 6E, change the data and minimize the
14.2 MHz signal level (A).
4) Press the PAUSE button of the adjustment remote commander.
5) Select page: 2, address: 01, set data: 00, and press the PAUSE
button of the adjustment remote commander.
6) Select page: 0, address: 01, and set data: 00.
H
A
Signal
generator
14.2 MHz 400 mVp-p
0.01
µ
F
47
Ω
15 k
Ω
1 k
Ω
RFU DC OUT jack
on PJ-92 board
(4.75 V)
Pin
7
of CN910
(RF AGC IN)
Pin
8
of CN910
(REG GND)
0.01
µ
F
A
14.2MHz
Fig. 5-3-9.
Fig. 5-3-11.