Sony CCD-TRV15, Service Manual

Page: 134 / 253

5-47
3. NTSC LP Mode Switching Position Adjustment
(VC-195 Board)
(CCD-TRV65/ TRV65PK/ TRV85/ TRV93/ TRV615/ TRV815)
If deviated in this cases switching noise or jitter on the LP mode
played back screen.
Mode Playback
Signal Alignment tape:
For tracking adjustment
(WR5-1NP (NTSC))
Measurement Point CH1: Pin
!¡
of CN910 (RF SWP)
CH2: Pin
6
of CN910 (PB RF)
Measuring Instrument Oscilloscope
Adjustment Page F
Adjustment Address 7E, 7F
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, set data: 60, and then press the
PAUSE button of the adjustment remote commander.
3) Select page: F, address: 7E, change the data and minimize “t1”,
and then press the PAUSE button of the adjustment remote
commander. (Coarse adjustment)
4) Select page: F, address: 7F, change the data and adjust so that
the switching position (t1) becomes the specified value. (Fine
adjustment)
5) Select page: F, address: 2A, set data: 00, and then press the
PAUSE button of the adjustment remote commander.
6) Press the PAUSE button of the adjustment remote commander.
7) Select page: 0, address: 01, and set data: 00.
Fig. 5-3-7.
3-4. VIDEO SYSTEM ADJUSTMENTS
Video system adjustments must be performed in the following order.
[Adjusting Order]
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. Hi8 REC Y current adjustment
8. Standard REC Y current adjustment
9. Hi8 REC L level adjustment
10. Standard8 REC L level adjustment
11. 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.
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=3579545
±
17Hz (NTSC)
f=4433618.75
±
17Hz (PAL)
Pin
!™
of IC501 :
f=14318181
±
68Hz (NTSC)
f=14187500
±
55Hz (PAL)
Note 1: NTSC MODEL: CCD-TRV15/ TRV15PK/ TRV25/
TRV25PK/ TRV35/ TRV65/
TRV65PK/ TRV85/ TRV93/ TRV215/
TRV615/ TRV815
PAL MODEL: CCD-TRV15E/ TRV15EP/ TRV35E
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: 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
button of the adjusting remote commander.
6) Select page: 0, address: 01, and set data: 00.