Sony DCR-TRV240 Service Manual page 146

5. PLL f & LPF f Fine Adjustment (VC-276 board)
0 0
RadarW RadarW RadarW
Mode VTR stop
Signal Arbitrary
Measurement Point Display data of page: 3, address: 02, 03
Measuring Instrument Adjustment remote commander
Adjustment Page C
Adjustment Address 1F, 20, 22, 29
Specified Value Display data of page: 3, address: 02 is
"00".
Display data of page: 3, address: 03 is
"00".
Note1: The data of page: 0, address: 10 must be "00".
Adjusting method:
Order Page Address Data
1 0 01 01
2 3 01 30
3 3 02
4 3 03
5 0 01 00
Note2: If it isn't satisfied, there are errors.
Note3: If the data of page: 3, address: 03 is other than "00", there are
errors. For the error contents, see the following table. (For the bit
values, refer to "5-4. SERVICE MODE", "4-3. 3. Bit value
discrimination".)
Bit value of page: 3, Error contents
address: 03
bit 2 = 1 or bit 3 = 1 PLL f
bit 4 = 1 or bit 5 = 1 PLL f
bit 6 = 1 LPF f
Procedure
Set the data.
Set the data, and press PAUSE
button.
Check that the data changes to
"00" with in 10 sec. (Note2)
Check that the data is "00".
(Note3)
Set the data.
fine adjustment is defective
0
adjustment is defective
0
adjustment is defective
0
6. Hi8/Standard8 Switching Position Adjustment
(VC-276 board)
If deviated in this case causes switching noise or jitter on the Hi8/
Standard8 mode played back screen.
Mode
Signal
Measurement Point
Measuring Instrument
Adjustment Page
Adjustment Address
Specified Value
Note1: The data of page: 0, address: 10 must be "00".
Adjusting Method:
Order Page Address Data
1
2 0 01
3 C 3E
4 <2> <4D> <80> Set the data. (Note2)
[7] [62]
5
6 C 40
7 C 40
8 C 41
9 C 41
10 C 3E
11 <2> <4D> <00> Set the data. (Note2)
[7] [62]
12 0 01
Note2: < >: DCR-TRV240, [ ]: DCR-TRV340
CH1
CH2
Enlargement
CH1
CH2
5-45
DCR-TRV240/TRV340
Playback
Hi8/Standard8 alignment tape:
For tracking adjustment (WR5-1NP)
CH1: Pin 8 of CN1108 (RF SWP)
CH2: Pin 5 of CN1108 (PB RF)
Oscilloscope
C
40, 41
t1 = 0 ± 10 µsec
Procedure
Set to the stop mode.
01 Set the data.
40 Set the data, and press PAUSE
button.
[02]
Set to the playback mode.
Change the data and minimize
"t1". (Coarse adjustment)
Press PAUSE button
Change the data and adjust so that
the switching position (t1)
becomes the specified value. (Fine
adjustment)
Press PAUSE button
00 Set the data, and press PAUSE
button.
[00]
00 Set the data.
t1=0 ± 10 µsec
Fig. 5-3-5.