Sony CCD-TR648E / CCD-TR748E / CCD-TR848 Service Manual ▷ View online
5-31
CCD-TR648E/TR748E/TR848
3-2. SYSTEM CONTROL SYSTEM ADJUSTMENT
1. Initialization of D, E, F, 7 Page Data
1. Initialization of D, E, F, 7 Page Data
If the D, E, F, 7 page data is erased due to some reason, perform “1-
2. INITIALIZATION OF D, E, F, 7 PAGE DATA”, of “5-1.
CAMERA SECTION ADJUSTMENT”
2. INITIALIZATION OF D, E, F, 7 PAGE DATA”, of “5-1.
CAMERA SECTION ADJUSTMENT”
3-3. SERVO ADJUSTMENT
1. CAP FG Offset Adjustment (VC-272 board)
1. CAP FG Offset Adjustment (VC-272 board)
Set the Cap FG signal duty cycle to 50% to establish an appropriate
capstan servo. If deviated, the uneven rotation of capstan and noise
can occur in the LP mode.
capstan servo. If deviated, the uneven rotation of capstan and noise
can occur in the LP mode.
Mode
Camera recording (SP mode)
Subject
Arbitrary
Measurement Point
CAP FG (Pin 4 of CN713)
Measuring Instrument
Oscilloscope
Adjustment Page
F
Adjustment Address
59
Specified value
Duty = 50 ± 1 %
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
Set the data.
2
6
01
81
Set the data, and press PAUSE
button.
button.
3
6
02
Check that the data changes to
“01”.
“01”.
4
6
01
00
Set the data, and press PAUSE
button.
button.
5
Check that Duty of CAP FG signal
satisfies the specified value. If not,
repeat steps 2 to 5.
satisfies the specified value. If not,
repeat steps 2 to 5.
6
0
01
00
Set the data.
2. Switching Position Adjustment (VC-272 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
(WR5-1NP (NTSC)),
(WR5-1CP (PAL))
(WR5-1NP (NTSC)),
(WR5-1CP (PAL))
Measurement Point
CH1: SWP (Pin 5 of CN713)
CH2: PB RF (Pin 9 of CN713)
CH2: PB RF (Pin 9 of CN713)
Measuring Instrument
Oscilloscope
Adjustment Page
F
Adjustment Address
5A, 5B
Specified Value
t1 = 0 ± 10
µ
sec
Adjusting Method:
Order Page Address Data
Procedure
1
0
01
01
Set the data.
2
F
20
40
Set the data, and press PAUSE
button.
button.
3
F
5A
Change the data and minimize
“t1”. (Coarse adjustment)
“t1”. (Coarse adjustment)
4
F
5A
Press PAUSE button
5
F
5B
Change the data and adjust so
that the switching position (t1)
becomes the specified value.
(Fine adjustment)
that the switching position (t1)
becomes the specified value.
(Fine adjustment)
6
F
5B
Press PAUSE button
7
F
20
00
Set the data, and press PAUSE
button.
button.
8
0
01
00
Set the data.
A
B
Duty = A/B
×
100 [%]
Center of movement
CH1
CH2
Enlargement
t1=0
±
10
µ
sec
CH1
CH2
Fig. 5-3-4.
Fig. 5-3-5.
5-32
CCD-TR648E/TR748E/TR848
3-4.
VIDEO SYSTEM ADJUSTMENTS
Video system adjustments must be performed in the following order.
[Adjusting Order]
1.
28MHz origin oscillation adjustment
2.
AFC f
0
adjustment
3.
Y OUT level adjustment
4.
C OUT level adjustment
5.
REC Y current adjustment
6.
REC C/REC AFM current adjustment
1. 28 MHz Origin Oscillation Adjustment
(VC-272 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
R200 (Pin ul of IC151)
Measuring Instrument
Frequency counter
Adjustment Page
F
Adjustment Address
45
Specified Value
f = 3579545 ± 17Hz (NTSC)
f = 4433594 ± 17Hz (PAL)
f = 4433594 ± 17Hz (PAL)
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
Set the data.
2
6
61
30
Set the data.
3
2
01
41
Set the data, and press PAUSE
button.
button.
4
F
45
Change the data and set the
frequency (f) to the specified
value.
frequency (f) to the specified
value.
5
F
45
Press PAUSE button.
6
2
01
00
Set the data, and press PAUSE
button.
button.
7
6
61
10
Set the data.
8
0
01
00
Set the data.
2. AFC f
0
Adjustment (VC-272 board)
Adjust the pull-in range of the A/D converted clock generator during
playback.
playback.
Mode
VTR stop
Signal
No signal
Adjustment Page
F
Adjustment Address
5D
Note1:
Insert a plug into the S VIDEO or the A/V jack.
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
Set the data.
2
F
5D
50
Set the data, and press PAUSE
button.
button.
3
2
01
4D
Set the data, and press PAUSE
button.
button.
4
Wait for 0.5 sec.
5
6
01
C5
Set the data, and press PAUSE
button.
button.
6
6
02
Check that the data changes to
“01”. (Note2)
“01”. (Note2)
7
2
01
00
Set the data, and press PAUSE
button.
button.
8
6
01
00
Set the data, and press PAUSE
button.
button.
9
0
01
00
Set the data.
Note2:
The adjustment data will be automatically input to page: F, address:
5D.
5D.
VC-272 board
IC151
1
108
162
54
55
109
216
163
R200
5-33
CCD-TR648E/TR748E/TR848
3. Y OUT Level Adjustment (VC-272 board)
Set the Y signal output level. (Adjust the D/A converter out put
level of IC151.)
level of IC151.)
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
5E
Specified Value
A = 286 ± 5mV (NTSC)
A = 300 ± 5mV (PAL)
A = 300 ± 5mV (PAL)
Note1:
Insert a plug into the S video terminal.
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
Set the data.
2
2
01
41
Set the data, and press PAUSE
button.
button.
3
6
61
30
Set the data,.
4
F
5E
Change the data and set the SYNC
level (A) to the specified value.
level (A) to the specified value.
5
F
5E
Press PAUSE button.
6
2
01
00
Set the data, and press PAUSE
button.
button.
7
6
61
10
Set the data.
8
0
01
00
Set the data.
4. C OUT Level Adjustment (VC-272 board)
Set the chroma signal output level. (Adjust the D/A converter out
put level of IC151.)
put level of IC151.)
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
5F
Specified Value
A = 286 ± 5mV (NTSC)
A = 300 ± 5mV (PAL)
A = 300 ± 5mV (PAL)
Note1:
Insert a plug into the S video terminal.
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
Set the data.
2
2
01
41
Set the data, and press PAUSE
button.
button.
3
6
61
30
Set the data,.
4
F
5F
Change the data and set the burst
level (A) to the specified value.
level (A) to the specified value.
5
F
5F
Press PAUSE button.
6
2
01
00
Set the data, and press PAUSE
button.
button.
7
6
61
10
Set the data.
8
0
01
00
Set the data.
H
A
Fig. 5-3-6.
H
A
Fig. 5-3-7.
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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