Sony CCD-TR3200E Service Manual ▷ View online
5-37
3-3.
SERVO SYSTEM ADJUSTMENTS
1. CAP FG Offset Adjustment (VC-195 board)
Improve the capstan servo characteristic. If it is not correct. jitters
will increase.
will increase.
Mode
Camera recording (SP mode)
Subject
Arbitrary
Measurement Point
Pin
!™ of CN910 (CAP FG)
Measuring Instrument
Oscilloscope
Adjustment Page
F
Adjustment Address
69
Specified value
Duty = 50
±
1%
Adjusting method:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: 2, address: 01, and set data: 81, and press the PAUSE
1) Select page: 0, address: 01, and set data: 01.
2) Select page: 2, address: 01, and set data: 81, and press the PAUSE
button of the adjustment remote commander. (to start up
automatic CAP FG offset adjustment.)
automatic CAP FG offset adjustment.)
3) Select page: 2, address: 02, and check that the data is “01”.
4) Check that Duty of CAP FG signal satisfies the specified value.
4) Check that Duty of CAP FG signal satisfies the specified value.
If not, select page: 2, address: 01, set data: 00, and press the
PAUSE button, and then, repeat steps 2) to 4).
PAUSE button, and then, repeat steps 2) to 4).
5) Select page: 2, address: 01, and set data: 00, and press the PAUSE
button of the adjustment remote commander.
6) Select page: 0, address: 01, and set data: 00.
2. Switching Position Adjustment (VC-195 Board)
If deviated in this case causes switching noise or jitter on the played
back screen.
back screen.
Mode
Playback
Signal
Alignment tape:
For tracking adjustment
(WR5-1CP )
(WR5-1CP )
Measurement Point
CH1: Pin
!¡ of CN910 (RF SWP)
CH2: Pin
6 of CN910 (PB RF)
Measuring Instrument
Oscilloscope
Adjustment Page
F
Adjustment Address
7C, 7D
Specified Value
t1 = 0
±
10
µ
sec
Adjusting Method:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: F, address: 2A, and set data: 20, and press the PAUSE
1) Select page: 0, address: 01, and set data: 01.
2) Select page: F, address: 2A, and set data: 20, and press the PAUSE
button of the adjustment remote commander.
3) Select page: F, address: 7C, change the data and minimize “t1”,
and then press the PAUSE button of the adjustment remote
commander. (Coarse adjustment)
commander. (Coarse adjustment)
4) Select page: F, address: 7D, change the data and adjust so that
the switching position (t1) becomes the specified value. (Fine
adjustment)
adjustment)
5) Press the PAUSE button of the adjustment remote commander.
6) Select page: F, address: 2A, and set data: 00, and press the PAUSE
6) Select page: F, address: 2A, and set data: 00, and press the PAUSE
button of the adjustment remote commander.
7) Select page: 0, address: 01, and set data: 00.
Fig. 5-3-5.
Fig. 5-3-6.
5-38
3-4.
VIDEO SYSTEM ADJUSTMENTS
Video system adjustments must be performed in the following order.
[Adjusting Order]
1.
1.
28MHz origin oscillation adjustment
2.
AFC f0 adjustment
3.
Filter f0 adjustment
4.
Y OUT level adjustment
5.
C OUT level adjustment
6.
RP filter f0 adjustment
7.
REC Y current adjustment
8.
REC L level adjustment
9.
REC C current adjustment
1. 28 MHz Origin Oscillation Adjustment (VC-195 board)
Set the frequency of the clock for synchronization.
If deviated, the synchronization will be disrupted and the color will
become inconsistent.
If deviated, the synchronization will be disrupted and the color will
become inconsistent.
Mode
VTR stop
Signal
No signal
Measurement Point
Pin
^§ of IC202 or pin !™ of IC501
Measuring Instrument
Frequency counter
Adjustment Page
F
Adjustment Address
2C
Specified Value
Pin
^§ of IC202:
f=4433618.75
±
17Hz
Pin
!™ of IC501:
f=14187500
±
55Hz
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
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: 2C, change the data and set the clock
4) Select page: F, address: 2C, change the data and set the clock
frequency(f) 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
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.
6) Select page: 0, address: 01, and set data: 00.
2. AFC f0 Adjustment (VC-195 board)
Adjust the pull-in range of the A/D converted clock generator during
playback.
playback.
Mode
VTR stop
Signal
No signal
Measurement Point
Pin
4 of CN910 (AFC f0)
Measuring Instrument
Digital voltmeter
Adjustment Page
F
Adjustment Address
4A
Specified Value
A = 2.10
±
0.05Vdc
Adjusting method:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: 3, address: 01, set data: 4D, and press the PAUSE
1) Select page: 0, address: 01, and set data: 01.
2) Select page: 3, address: 01, set data: 4D, and press the PAUSE
button of the adjusting remote commander.
3) Select page: F, address: 4A, change the data and set the DC
voltage (A) to the specified value.
4) Press the PAUSE button of the adjusting remote commander.
5) Select page: 3, address: 01, set data: 00, and press the PAUSE
5) Select page: 3, address: 01, set data: 00, and press the PAUSE
button of the adjusting remote commander.
6) Select page: 0, address: 01, and set data: 00.
5-39
4. Y OUT Level Adjustment (VC-195 board)
Set the Y signal output level.
Mode
VTR stop
Signal
No signal
Measurement Point
Y signal terminal of S VIDEO
terminal (75
terminal (75
Ω
terminated )
Measuring Instrument
Oscilloscope
Adjustment Page
F
Adjustment Address
49
Specified Value
A = 300
±
5mV
Note 1:
Insert the plug into the S video terminal.
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
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: 49, change the data and set the SYNC
4) Select page: F, address: 49, change the data and set the SYNC
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
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.
Fig. 5-3-8.
3. Filter f0 Adjustment (VC-195 board)
Minimize the chroma signal residual components during composite
video signal input.
video signal input.
Mode
VTR stop
Signal
No signal
Measurement Point
Pin
3 of CN910 (IR VIDEO)
Measuring Instrument
Oscilloscope
Adjustment Page
F
Adjustment Address
4D
Specified Value
Minimum residual chroma signal
components (A = Bellow 12mV)
components (A = Bellow 12mV)
Adjusting method:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: 3, address: 01, set data: 4F, and press the PAUSE
1) Select page: 0, address: 01, and set data: 01.
2) Select page: 3, address: 01, set data: 4F, and press the PAUSE
button of the adjusting remote commander.
3) Select page: F, address: 4D, change the data and minimize the
residual chroma signal components (A).
4) Press the PAUSE button of the adjusting remote commander.
5) Select page: 3, address: 01, set data: 00, and press the PAUSE
5) Select page: 3, address: 01, set data: 00, and press the PAUSE
button of the adjusting remote commander.
6) Select page: 0, address: 01, and set data: 00.
Fig. 5-3-7.
A
H
A
H
5-40
5. C OUT Level Adjustment (VC-195 board)
Set the chroma signal output level.
Mode
VTR stop
Signal
No signal
Measurement Point
Chroma signal terminal of S VIDEO
terminal (75
terminal (75
Ω
terminated)
Measuring Instrument
Oscilloscope
Adjustment Page
F
Adjustment Address
4B
Specified Value
A = 300
±
5mV
Note 1:
Insert the plug into the S video terminal.
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
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
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
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.
Fig. 5-3-9.
6. RP Filter f0 Adjustment (VC-195 board)
Adjust the LPF of the playback RF amplifier.
Mode
VTR stop
Signal
No signal
Measurement Point
Pin
9 of CN910 (RF AGC OUT)
Measuring Instrument
Oscilloscope
Adjustment Page
F
Adjustment Address
4E
Specified Value
A = Below 10mVp-p
Connection:
1) Input a 14.2MHz, 400mVp-p CW signal to Pin
1) Input a 14.2MHz, 400mVp-p CW signal to Pin
7 of CN910
(RF AGC IN).
Fig. 5-3-10.
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
1) Select page: 0, address: 01, and set data: 01.
2) Select page: 3, address: 01, set data: 35, and press the PAUSE
button of the adjusting remote commander.
3) Select page: F, address: 4E, change the data and minimize the
14.2 MHz signal level (A).
4) Press the PAUSE button of the adjusting remote commander.
5) Select page: 3, address: 01, set data: 00, and press the PAUSE
5) Select page: 3, address: 01, set data: 00, and press the PAUSE
button of the adjusting remote commander.
6) Select page: 0, address: 01, and set data: 00.
Fig. 5-3-11.
Signal
generator
generator
14.2MHz 400mVp-p
0.01
µ
F
0.01
µ
F
15k
Ω
1k
Ω
47
Ω
Pin 5 of CN101 of
PJ-83/84 board
PJ-83/84 board
Pin 7 of CN910
(RF AGC IN)
(RF AGC IN)
Pin 8 of CN910
(REG GND)
(REG GND)
Transistor : General NPN transistor (2SC403. etc)
47
47
Ω
resistor :
1k
Ω
resistor :
15k
Ω
resistor :
0.01
µ
F capacitor :
1-249-401-11
1-249-417-11
1-249-431-11
1-101-004-00
1-249-417-11
1-249-431-11
1-101-004-00
A
H
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