Sony Handycam DCR-TRV11, Service Manual

Page: 168 / 215

5-53
4-3. APC & AEQ Adjustment (VC-240/241 board)
Mode Playback
Signal Recorded signal at “Preparations
before adjustments”
Measurement Point Pin
w;
of CN009 (RF MON) (Note 1)
Ext. trigger : Pin
qj
of CN009 (SWP)
Measuring Instrument Oscilloscope
Adjustment Page C
Adjustment Address 18, 19, 1B, 1C, 21, 2C
Specified Value The display data of page: 3, address:
03 is “00”
Note 1: Connect a 75
Ω
resistor between Pin
w;
and Pin
ql
(GND) of
CN009.
75
Ω
resistor (Parts code: 1-247-804-11)
Note 2:
The “AGC Center Level Adjustment” must have already been
completed before starting this adjustment.
Adjusting method:
1)
Select page: 0, address: 01, and set data: 01.
2) Playback the recorded signal at “Preparations before
adjustments”
3) Select page: 3, address: 33, and set data: 08.
4) Check that the playback RF signal is stable.
5) Select page: 3, address: 01, set data: 07, and press the PAUSE
button of the adjustment remote commander.
6) Select page: 3, address: 02, and check that the data changes
from “07” to “00” in about 15 seconds after pressing the PAUSE
button.
7) Select page: 3, address: 03, and check that the data is “00”.
Note:
If the data of page: 3, address: 03 is other than “00”, adjustment
has errors. (Take an appropriate remedial measures according
to the errors referring to the following table. )
8) Perform “Processing after Completing Adjustments”.
Note 3:
If this data is displayed twice successively, the machine is defective.
4-4. Processing after Completing Adjustments
1) Select page: 2, address: 30, and set data: 00.
2) Select page: 3, address: 33, and set data: 00.
3) Select page: 0, address: 01, and set data: 00.
5. PLL f
0
& LPF f
0
Final Adjustment (VC-240/241 board)
Mode VTR stop
Signal Arbitrary
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.
Data of page: 3,
address: 03
20
30
50
60
80
Contents of defect
Perform re-adjustment. (Note 3)
The machine is defective
Perform re-adjustment (Note 3)
The machine is defective
The machine is defective
Bit value of page: 3,
address: 03
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
6.7 msec
PB RF signal is stable
Pin
qj
Pin
w;
Fig. 5-3-6.
Ver 1.1 2000. 06