Sony Handycam DCR-TRV11, Руководство по обслуживанию

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5-51
3-3. SERVO AND RF SYSTEM ADJUSTMENT
Before perform the servo and RF system adjustments, check that
the specified value of “36MHz/54MHz/66MHz Origin Oscillation
Adjustment” of “CAMERA SYSTEM ADJUSTMENT” is satisfied.
Note: Only for the DCR-TRV20/TRV20E model, the lens block (CD-252
board) must be connected when performing the adjustment.
Adjusting Procedure:
1.
Cap FG duty adjustment
2. PLL f
0
& LPF f
0
adjustment
3. Switching position adjustment
4. AGC center level and APC & AEQ adjustment
5. PLL f
0
& LPF f
0
final adjustment
1. Cap FG Duty Adjustment (VC-240/241 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.
Measurement Point Display data of page: 3, address: 03
Measuring Instrument Adjustment remote commander
Adjustment Page C
Adjustment Address 16
Specified Value 00
Adjusting method:
1)
Close the cassette compartment without inserting a cassette.
2) Select page: 0, address: 01, and set data: 01.
3) Select page: 3, address: 01, set data: 1B, and press the PAUSE
button of the adjustment remote commander.
4) Select page: 3, address: 02, and check that the data changes
starting from “1B” to “2B” to “00” in this order.
5) Select page: 3, address: 03, and check that the data is “00”.
Note:
If the data of page: 3, address: 03 is “01”, adjustment has errors
or the mechanism deck is defective.
6) Select page: 0, address: 01, and set data: 00.
2. PLL f
0
& LPF f
0
Adjustment (VC-240/241 board)
Mode VTR stop
Measurement Point Display data of page: 3, address: 03
Measuring Instrument Adjustment remote commander
Adjustment Page C
Adjustment Address 1F, 20, 22, 29
Specified Value Bit2, bit3 and bit6 are “0”
Adjusting method:
1)
Select page: 0, address: 01, and set data: 01.
2) Select page: 3, address: 01, set data: 30, and press the PAUSE
button of the adjustment remote commander.
3) Select page: 3, address: 02, and check that the data changes to
“00”.
4) Select page: 3, address: 03, and check that bit2, bit3 and bit 6
of the data are “0”.
Note: If bit2, bit3 or bit 6 of the data is “1”, 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”.)
5) Select page: 0, address: 01, and set data: 00.
Bit value of page: 3,
address: 03 data
bit 6 = 1
bit 3 = 1
bit 2 = 1
Error contents
LPF f
0
is defective
PLL f
0
, final adjustment is defective
PLL f
0
, final adjustment time-out
Ver 1.1 2000. 06