Sony DCR-TRV380 / DCR-TRV480 / DCR-TRV480E (serv.man4) Service Manual ▷ View online
6-42
DCR-TRV380/TRV480/TRV480E
2. CAP FG Duty Adjustment (VC-345 Board)
RadarW
RadarW
RadarW
RadarW
RadarW
(DCR-TRV480/TRV480E)
Set the CAP FG signal duty cycle to 50% to establish an appropri-
ate capstan servo. If deviated, the uneven rotation of capstan and
noise can occur in the LP mode.
ate capstan servo. If deviated, the uneven rotation of capstan and
noise can occur in the LP mode.
Mode
VTR playback (PLAY/EDIT mode)
Signal
Hi8/Standard8 alignment tape:
For checking operation
(WR5-5NSP (NTSC))
(WR5-5CSP (PAL)
For checking operation
(WR5-5NSP (NTSC))
(WR5-5CSP (PAL)
Measurement Point
Displayed data of page: 3, address: 03
Measuring Instrument
Adjusting remote commander
Adjustment Page
C
Adjustment Address
16
Specified value
The data of page: 3, address: 03 is “00”
Note 1:
Check that the data of page: 0, address: 10 is “00”.
Adjusting method:
Order Page Address Data
Procedure
1
Insert the alignment tape and
enter the VTR playback mode.
enter the VTR playback mode.
2
0
01
01
3
3
01
81
Press PAUSE button.
4
3
02
Check the data changes to
“00”.
“00”.
5
3
03
Check the data is “00”. (Note 2)
6
0
01
00
Note 2:
If the data is other value, adjustment has errors.
For the error contents, see the following table.
For the error contents, see the following table.
Bit value of page: 3,
Error contents
address: 03
bit0 = 1
Adjustment time out
bit1 = 1
No changed to Hi8/Standard8 mode
3-3.
SERVO AND RF SYSTEM ADJUSTMENTS
Before perform the servo and RF system adjustments, check that
the specified values of “27 MHz Origin Oscillation Adjustment”
of “VIDEO SYSTEM ADJUSTMENTS” is satisfied.
Check that the data of page: 0, address: 10 is “00”.
If not, select page: 0, address: 10, and set the data “00”.
the specified values of “27 MHz Origin Oscillation Adjustment”
of “VIDEO SYSTEM ADJUSTMENTS” is satisfied.
Check that the data of page: 0, address: 10 is “00”.
If not, select page: 0, address: 10, and set the data “00”.
Adjusting Procedure:
1. REEL FG adjustment
2. CAP FG duty adjustment
3. Digital8 switching position adjustment
4. SD error rate check
5. Hi8/Standard8 switching position adjustment (Note)
1. REEL FG adjustment
2. CAP FG duty adjustment
3. Digital8 switching position adjustment
4. SD error rate check
5. Hi8/Standard8 switching position adjustment (Note)
Note:
DCR-TRV480/TRV480E only
1. REEL FG Adjustment (VC-345 Board)
RadarW
RadarW
RadarW
RadarW
RadarW
Compensates the dispersion of the hall elements.
Mode
VTR stop (PLAY/EDIT mode)
Signal
No signal
Measurement Point
Displayed data of page: 3, address:
03
03
Measuring Instrument
Adjusting remote commander
Adjustment Page
C
Adjustment Address
17, 2F
Specified value
The data of page: 3, address: 03 is
“00” or “01” or “04” or “05”
“00” or “01” or “04” or “05”
Note 1:
Check that the data of page: 0, address: 10 is “00”.
Adjusting method:
Order Page Address Data
Procedure
1
Close the cassette compart-
ment without inserting cas-
sette.
ment without inserting cas-
sette.
2
0
01
01
3
3
01
1C
Press PAUSE button.
4
3
02
Check the data changes to
“00”.
“00”.
5
3
03
Check the data is “00” or “01”
or “04” or “05”. (Note 2)
or “04” or “05”. (Note 2)
6
0
01
00
Note 2:
If the data is other value, adjustment has errors.
For the error contents, see the following table.
For the error contents, see the following table.
Data
Error contents
02, 03, 06, 07
T REEL is defective
08, 09, 0C, 0D
S REEL is defective
0A, 0B, 0E, 0F
T REEL and S REEL is defective
6-43
DCR-TRV380/TRV480/TRV480E
3. CAP FG Duty Adjustment (VC-345 Board)
RadarW
RadarW
RadarW
RadarW
RadarW
(DCR-TRV380)
Set the CAP FG signal duty cycle to 50% to establish an appropri-
ate capstan servo. If deviated, the uneven rotation of capstan and
noise can occur in the LP mode.
ate capstan servo. If deviated, the uneven rotation of capstan and
noise can occur in the LP mode.
Mode
VTR stop (PLAY/EDIT mode)
Signal
No signal
Measurement Point
Displayed data of page: 3, address:
03
03
Measuring Instrument
Adjusting remote commander
Adjustment Page
C
Adjustment Address
16
Specified value
The data of page: 3, address: 03 is
“00”
“00”
Note 1:
Check that the data of page: 0, address: 10 is “00”.
Adjusting method:
Order Page Address Data
Procedure
1
Close the cassette compart-
ment without inserting
cassette.
ment without inserting
cassette.
2
0
01
01
3
3
01
1B
Press PAUSE button.
4
3
02
Check the data changes to
“00”.
“00”.
5
3
03
Check the data is “00”.
(Note 2)
(Note 2)
6
0
01
00
Note 2:
If the data is “01”, adjustment has errors or the mecha-
nism deck is defective.
nism deck is defective.
4.
Digital8 Switching Position Adjustment
RadarW
RadarW
RadarW
(VC-345 Board)
To obtain normal playback waveform output, adjust the switching
position.
position.
Mode
VTR playback (PLAY/EDIT mode)
Signal
Digital8 alignment tape:
SW/OL standard (WR5-2D)
SW/OL standard (WR5-2D)
Measurement Point
Displayed data of page: 3, address:
03
03
Measuring Instrument
Adjusting remote commander
Adjustment Page
C
Adjustment Address
10, 11, 12, 13
Specified value
The data of page: 3, address: 03 is
“00”
“00”
Note 1:
Check that the data of page: 0, address: 10 is “00”.
Adjusting method:
Order Page Address Data
Procedure
1
Insert the SW/OL standard tape
and enter the VTR stop mode.
and enter the VTR stop mode.
2
0
01
01
3
C
10
EE
Press PAUSE button.
4
3
21
Check the data is “02”. (Note 2)
5
3
01
0D
Press PAUSE button.
6
3
02
Check the data changes to
“00”.
“00”.
7
3
03
Check the data is “00”.
(Note 3, 4)
(Note 3, 4)
8
0
01
00
Note 2:
If the data is “72”, the tape top being played. After play-
ing the tape for 1 to 2 seconds, stop it, perform step 5 and
higher.
If the data is “62”, the tape end being played. After re-
wind the tape, perform step 5 and higher.
ing the tape for 1 to 2 seconds, stop it, perform step 5 and
higher.
If the data is “62”, the tape end being played. After re-
wind the tape, perform step 5 and higher.
Note 3:
If the data is not “00”, select page: C, address: 21 and
take a note of the data. Set data: 10, press the PAUSE
button, then perform the adjustment again.
When the data does not become “00” even if the adjust-
ment has been performed again, set back the data on page:
C, address: 21.
take a note of the data. Set data: 10, press the PAUSE
button, then perform the adjustment again.
When the data does not become “00” even if the adjust-
ment has been performed again, set back the data on page:
C, address: 21.
Note 4:
If bit0 of the data is “1”, the EVEN channel is defective.
If bit1 of the data is “1”, the ODD channel is defective.
Contents of the defect is see written into page: C, ad-
dress: 10 and 12. See following table.
(For the bit values, refer to “6-4. SERVICE MODE”, “4-
3. 3. Bit Value Discrimination”.)
If bit3 of the data is “1”, the tape end being played. After
rewinding the tape, perform the adjustment again.
If bit1 of the data is “1”, the ODD channel is defective.
Contents of the defect is see written into page: C, ad-
dress: 10 and 12. See following table.
(For the bit values, refer to “6-4. SERVICE MODE”, “4-
3. 3. Bit Value Discrimination”.)
If bit3 of the data is “1”, the tape end being played. After
rewinding the tape, perform the adjustment again.
When the EVEN channel is defective
Data of page: C,
Contents of defect
address: 10
EE
Writing into EEP ROM (IC4502) is defective
E8
Adjustment data is out of range
E7
No data is returned from IC6001
When the ODD 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 IC6001
6-44
DCR-TRV380/TRV480/TRV480E
5.
SD Error Rate Check (LP)
RadarW
RadarW
RadarW
RadarW
RadarW
(VC-345 Board)
Checking the video error rate in LP mode, adjust the filter tap
coefficient of IC6001.
coefficient of IC6001.
Mode
VTR playback (PLAY/EDIT mode)
Signal
Recorded signal at “Preparations
before adjustments”
before adjustments”
Measurement Point
Displayed data of page: 3, address:
03
03
Measuring Instrument
Adjusting remote commander
Adjustment Page
1C (Note 1)
Adjustment Address
B3 to C8
Specified value
The data of page: 3, address: 03 is
“00”
“00”
Note 1:
If reading/writing data on page 1C, set data: 01 to page:
0, address: 10, and then select page C. By this data set-
ting, the page C can be selected.
After the data reading/writing finished, return the data
on page: 0, address: 10 to “00”.
0, address: 10, and then select page C. By this data set-
ting, the page C can be selected.
After the data reading/writing finished, return the data
on page: 0, address: 10 to “00”.
Switch setting:
1) REC MODE (Menu display) .............................................. LP
1) REC MODE (Menu display) .............................................. LP
Preparations before adjustment:
1) Set the camcoder to CAMERA mode (LP mode).
2) Record camera signal for a minute, and rewind tape.
1) Set the camcoder to CAMERA mode (LP mode).
2) Record camera signal for a minute, and rewind tape.
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
2
A
1C
Set the bit value of bit3 is “0”
and press PAUSE button.
(Note 2)
and press PAUSE button.
(Note 2)
3
Playback the recorded signal
at“Preparations before adjust-
ments”.
at“Preparations before adjust-
ments”.
4
3
01
40
Press PAUSE button.
5
3
02
Check the data changes to
“00”.
“00”.
6
3
03
Check the data is “00”. (Note 3)
7
A
1C
Set the following bit value,
and press PAUSE button.
(Note 2)
bit3 is “1” (TRV480/TRV480E)
bit3 is “0” (TRV380)
and press PAUSE button.
(Note 2)
bit3 is “1” (TRV480/TRV480E)
bit3 is “0” (TRV380)
8
0
01
00
Note 2:
For the bit value, refer to “6-4. SERVICE MODE”, “4-3.
3. Bit Value Discrimination”.
3. Bit Value Discrimination”.
Note 3:
If the data is other value, adjustment has errors.
For the error contents, see the following table.
For the error contents, see the following table.
Data
Error contents
01
Error rate of the EVEN channel exceeds the specified
value
value
02
Error rate of the ODD channel exceeds the specified
value
value
03
Error rate of the EVEN and ODD channels exceeds the
specified value
specified value
6-45
DCR-TRV380/TRV480/TRV480E
6.
Hi8/Standard8 Switching Position Adjustment
(VC-345 Board) (DCR-TRV480/TRV480E)
(VC-345 Board) (DCR-TRV480/TRV480E)
If deviated in this case cause switching noise or jitter on the Hi8/
Standard8 mode played back screen.
Standard8 mode played back screen.
Mode
VTR playback (PLAY/EDIT mode)
Signal
Hi8/Standard8 alignment tape:
For tracking adjustment
(WR5-1NU (NTSC))
(WR5-1CU (PAL))
For tracking adjustment
(WR5-1NU (NTSC))
(WR5-1CU (PAL))
Measurement Point
CH1: SWP (Pin 5 of CN1011)
CH2: IR VIDEO (Pin 2 of CN1011)
CH2: IR VIDEO (Pin 2 of CN1011)
Measuring Instrument
Oscilloscope
Adjustment Page
C
Adjustment Address
32, 33
Specified value
t1 = 0
± 10 µsec
Note 1:
Check that the data of page: 0, address: 10 is “00”.
Adjusting method:
Order Page Address Data
Procedure
1
Insert the alignment tape and
enter the VTR stop mode.
enter the VTR stop mode.
2
0
01
01
3
3
92
Set the bit value of bit2 to “1”,
and press PAUSE button.
(Note 2)
and press PAUSE button.
(Note 2)
4
Set to the playback mode.
5
C
32
Change the data and minimize
“t1”. (Coarse adjustment)
“t1”. (Coarse adjustment)
6
C
32
Press PAUSE button.
7
C
33
Change the data and adjust so
that the switching position (t1)
becomes specified value. (Fine
adjustment)
that the switching position (t1)
becomes specified value. (Fine
adjustment)
8
C
33
Press PAUSE button.
9
3
92
Set the bit value of bit2 to “0”,
and press PAUSE button.
(Note 2)
and press PAUSE button.
(Note 2)
10
0
01
00
Note 2:
For the bit value, refer to “6-4. SERVICE MODE”, “4-3.
3. Bit Value Discrimination”.
3. Bit Value Discrimination”.
Fig. 6-3-4
CH1
CH2
Enlargement
t1=0
±
10
µ
sec
CH1
CH2
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