Sony D8 Digital Handycam DCR-TRV420E, Руководство по обслуживанию

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5-49
4. AGC Center Level Adjustment (VC-235 board)
Mode Camera record and playback
Subject Arbitrary
Measurement Point Pin qh of CN1108 (RF MON)
(Note 1)
External trigger : Pin
qd
of CN1108
(DV RF SWP)
Measuring Instrument Oscilloscope
Adjustment Page C
Adjustment Address 1E
Specified Value The display data of page: 3, address:
03 is “00”
Note 1:
Connect a 75
Ω
resistor between Pin
qh
and Pin
6
(GND)
of CN1108.
75
Ω
resistor (Parts code: 1-247-804-11)
Note 2: Use a Hi8 MP tape.
Adjusting method:
1)
Select page: 0, address: 01, and set data: 01.
2) Select page: 8, address: 2A, set data: C8, and press the PAUSE
button of the adjustment remote commander.
3) Record the camera signal for a minute.
4) Select page: 2, address: 2E, and set data: 01.
5) Playback the recorded segment.
6) Select page: 3, address: 33, and set data: 08.
7) Confirm that the playback RF signal is stable.
8) Select page: 3, address: 01, set data: 23, and press the PAUSE
button.
9) Select page: 3, address: 02, and check that the data is “00”.
10) Select page: 3, address: 03, and check that the data is “00”.
Note 3: If the data of page: 3, address: 03 is other than “00”,
adjustment has errors.
11) Select page: 3, address: 33, and set data: 00.
12) Select page: 2, address: 2E, and set data: 00.
13) Select page: 8, address: 2A, set data: 00, and press the PAUSE
button.
14) Select page: 0, address: 01, and set data: 00.
3. Switching Position Adjustment (VC-235 board)
To obtain normal playback waveform output, adjust the switching
position.
Mode VTR playback
Signal Digital8 alignment tape :
SW/OL standard (WR5-2D)
Measurement Point Display data of page: 3, address: 03
Measuring Instrument Adjustment remote commander
Adjustment Page C
Adjustment Address 10, 11, 12, 13
Specified Value 00
Adjusting method:
1)
Insert the Digital8 SW/OL reference tape and enter the VTR
STOP mode.
2) Select page: 0, address: 01, and set data: 01.
3) Select page: 3, address: 21, and check that the data is “02”.
Note:
If the data of page: 3, address: 21 is other than “72”,
the tape top being played. After playing the tape for 1
to 2 seconds, perform step 4) and higher.
If the data of page: 3, address: 21 is other than “62”,
the tape end being played. After rewind the tape,
perform step 4) and higher.
4) Select page: 3, address: 01, set data: 0D, and press the PAUSE
button of the adjustment remote commander.
5) Select page: 3, address: 02, wait data for stable condition as
“00”.
6) Select page: 3, address: 03, and check that the data is “00”.
Note:
If bit 0 of page: 3, address: 03 data is “1”, the A channel
is defective. If bit 1 is “1”, the B channel is defective.
Contents of the defect is written into page: C, addresses:
10 and 12. See the following table. (For the bit values,
refer to “5-4. SERVICE MODE”, “4-3. 3. Bit value
discrimination”)
7) Select page: 0, address: 01, and set data: 00.
When the A channel is defective
Data of page: C,
Contents of defect
address: 10
EE Writing into EEPROM (IC4502) is
defective
E8 Adjustment data is out of range
E7 No data is returned from IC3301
(CAIN)
When the B channel is defective
Data of page: C,
Contents of defect
address: 12
E8 Adjustment data is out of range
E7 No data is returned from IC3301
(CAIN)
Fig. 5-3-5
13.3 msec
PB RF signal is stable
Pin
qd
Pin
qh