Read Sony DCR-TRV40 / DCR-TRV40E / DCR-TRV50 / DCR-TRV50E (serv.man2) Service Manual online
5-53
DCR-TRV40/TRV40E/TRV50/TRV50E
3. Switching Position Adjustment (VC-283 Board)
To obtain normal playback waveform output during the Digital8
playback mode, adjust the switching position.
playback mode, adjust the switching position.
Mode
VTR playback
Signal
SW/OL reference tape (XH2-3)
Measurement Point
Display data of page: 3, address: 02, 03
Measuring Instrument
Adjustment remote commander
Adjustment Page
C
Adjustment Address
10, 11, 12, 13
Specified Value
Data of page: 3, address: 02 is “00”.
Data of page: 3, address: 03 is “00”.
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
Procedure
1
Insert the SW/OL reference tape
and enter the VTR STOP mode.
and enter the VTR STOP mode.
2
0
01
01
Set the data.
3
C
10
EE
Set the data, and press PAUSE
button.
button.
4
3
21
Check that the data is “02”.
(Note2)
(Note2)
5
3
01
0D
Set the data, and press PAUSE
button.
button.
6
3
02
Check that the data changes to
“00”.
“00”.
7
3
03
Check that the data is “00”.
(Note3)
(Note3)
8
0
01
00
Set the data.
Note2:
If the data of page: 3, address: 21 is “72”, the tape top being played.
After playing the tape for 1 to 2 seconds, stop it, perform step 5
and higher.
If the data of page: 3, address: 21 is “62”, the tape end being played.
After rewinding the tape, perform step 5 and higher.
After playing the tape for 1 to 2 seconds, stop it, perform step 5
and higher.
If the data of page: 3, address: 21 is “62”, the tape end being played.
After rewinding the tape, perform step 5 and higher.
Note3:
If bit 0 of the data is “1”, the EVEN channel is defective. If bit 1 is
“1”, the ODD 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”.) If bit 3 of the data is “1”, the tape end being
played, so rewind the tape and perform the adjustment again.
“1”, the ODD 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”.) If bit 3 of the data is “1”, the tape end being
played, so rewind the tape and perform the adjustment again.
When the EVEN channel is defective
When the ODD channel is defective
Data of page: C,
address: 10
address: 10
EE
E8
E7
Contents of defect
Writing into EEPROM (IC2502) is defective
Adjustment data is out of range
No data is returned from IC2101
Data of page: C,
address: 12
address: 12
EE
E8
E7
Contents of defect
Writing into EEPROM (IC2502) is defective
Adjustment data is out of range
No data is returned from IC2101
4. AGC Center Level and APC & AEQ Adjustment
Note:
The data of page: 0, address: 10 must be “00”.
4-1. Preparations before adjustments
Mode
Camera recording
Subject
Arbitrary
Adjusting method:
Order Page Address Data
Procedure
1
7
30
80
Set the data.
2
Record the camera signal for
three minutes.
three minutes.
4-2. AGC Center Level Adjustment (VC-283 Board)
Mode
Playback
Signal
Recorded signal at “Preparations
before adjustments”
before adjustments”
Measurement Point
Pin 2 of CN1012 (RF MON) (Note1)
Ext. trigger: Pin 4 of CN1012 (SWP)
Ext. trigger: Pin 4 of CN1012 (SWP)
Measuring Instrument
Oscilloscope
Adjustment Page
C
Adjustment Address
1E
Specified Value
Data of page: 3, address: 02 is “00”.
Data of page: 3, address: 03 is “00”.
Data of page: 3, address: 03 is “00”.
Note1:
Connect a 75
Ω resistor between Pin 2 and Pin 6 (GND) of
CN1012.
75
75
Ω resistor (Parts code: 1-247-804-11)
Adjusting method:
Order Page Address Data
Procedure
1
Playback the recorded signal at
“Preparations before adjustments”
“Preparations before adjustments”
2
0
01
01
Set the data.
3
3
33
08
Set the data.
4
Confirm that the playback RF
signal is stable. (Fig. 5-3-4.)
signal is stable. (Fig. 5-3-4.)
5
3
01
23
Set the data, and press PAUSE
button.
button.
6
3
02
Check that the data is “00”.
7
3
03
Check that the data is “00”.
(Note2)
(Note2)
8
Perform “APC & AEQ
Adjustment”.
Adjustment”.
Note2:
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.)
has errors. (Take an appropriate remedial measures according to
the errors referring to the following table.)
Data
Contents of defect
20
Perform re-adjustment. (Note 3)
30
The machine is defective
40
Perform re-adjustment. (Note 3)
50
The machine is defective
Note3:
If this data is displayed twice successively, the machine is defective.
