C Out Level Adjustment (Vc-195 Board); Rp Filter F0 Adjustment (Vc-195 Board) - Sony Handycam CCD-TR311 Service Manual

5. C OUT Level Adjustment (VC-195 board)

Set the chroma signal output level.
Mode VTR stop
Signal No signal
Measurement Point Hi8 model :
Chroma signal terminal of S VIDEO
terminal (75Ω terminated )
Standard 8 model :
VIDEO terminal (75Ω terminated )
Measuring Instrument Oscilloscope
Adjustment Page F
Adjustment Address 4B
Specified Value A = 286±5mV (NTSC)
A = 300±5mV (PAL)
Note 1: Insert the plug into the S video terminal (Hi8 model)
Adjusting method:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: 3, address: 01, set data: 41, and press the PAUSE
button of the adjusting remote commander.
3) Select page: 2, address: 61, and set data: 30.
4) Select page: F, address: 4B, change the data and set the burst
level (A) to the specified value.
5) Press the PAUSE button of the adjusting remote commander.
6) Select page: 2, address: 61, and set data: 10.
7) Select page: 3, address: 01, set data: 00, and press the PAUSE
button of the adjusting remote commander.
8) Select page: 0, address: 01, and set data: 00.
Hi8 model
H
Standard 8 model
H
Fig. 5-3-9.

6. RP Filter f0 Adjustment (VC-195 board)

Adjust the LPF of the playback RF amplifier.
Mode
Signal
Measurement Point
Measuring Instrument Oscilloscope
Adjustment Page
Adjustment Address
Specified Value
Connection:
1) Input a 14.2MHz, 400mVp-p CW signal to Pin 7 of CN910
(RF AGC IN).
14.2MHz 400mVp-p
Signal
generator
Transistor : General NPN transistor (2SC403. etc)
47 Ω resistor :
1k Ω resistor :
15k Ω resistor :
0.01 µ F capacitor :
Adjusting method:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: 3, address: 01, set data: 35, and press the PAUSE
A
button of the adjusting remote commander.
3) Only for Standard8 model, select page: D, address: 15, after
memorizing the data , set the bit value of bit0 to "1". (Refer to
"3. Bit value discrimination" of "3-1-8. Service Mode").
4) Select page: F, address: 4E, change the data and minimize the
14.2 MHz signal level (A).
5) Press the PAUSE button of the adjusting remote commander.
6) Select page: D, address: 15, and set the data memorized at step
3), and press the PAUSE button of the adjusting remote
commander..
7) Select page: 3, address: 01, set data: 00, and press the PAUSE
button of the adjusting remote commander.
A
8) Select page: 0, address: 01, and set data: 00.
5-43
VTR stop
No signal
Pin 9 of CN910 (RF AGC OUT)
F
4E
A = Below 10mVp-p
1k Ω
0.01 µ F
47 Ω
15k Ω
1-249-401-11
1-249-417-11
1-249-431-11
1-101-004-00
Fig. 5-3-10.
Fig. 5-3-11.
Pin 5 of CN101 of
PJ-81 board
0.01 µ F
Pin 7 of CN910
(RF AGC IN)
Pin 8 of CN910
(REG GND)