Sony DCR-TRV255E / DCR-TRV260 / DCR-TRV265 / DCR-TRV265E (serv.man3) Service Manual ▷ View online
DCR-TRV255E/TRV260/TRV265/TRV265E
6-39
3. SD Error Rate Check (LP) (VC-344 Board)
RadarW
RadarW
RadarW
Checking the video error rate in LP mode, adjust the filter tap
coefficient of IC3301.
coefficient of IC3301.
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”.
Note 2:
Use a Hi8 MP tape.
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
Playback the recorded signal
at “Preparations before
adjustments”.
at “Preparations before
adjustments”.
3
3
01
40
Press PAUSE button.
4
3
02
Check the data changes to
“00”.
“00”.
5
3
03
Check the data is “00”.
(Note 3)
(Note 3)
6
0
01
00
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
specified value
02
Error rate of the ODD channel exceeds the
specified value
specified value
03
Error rate of the EVEN and ODD channels exceeds
the specified value
the specified value
DCR-TRV255E/TRV260/TRV265/TRV265E
6-40
3-4.
VIDEO SYSTEM ADJUSTMENTS
Before perform the video system adjustments, check that the data
of page: 0, address: 10 is “00”.
If not, select page: 0, address: 10, and set data “00”
Video system adjustments must be performed in the following or-
der.
of page: 0, address: 10 is “00”.
If not, select page: 0, address: 10, and set data “00”
Video system adjustments must be performed in the following or-
der.
Adjusting procedure:
1. 27 MHz origin oscillation adjustment
2. S VIDEO OUT Y level adjustment
3. S VIDEO OUT C level adjustment
4. VIDEO OUT level check
1. 27 MHz origin oscillation adjustment
2. S VIDEO OUT Y level adjustment
3. S VIDEO OUT C level adjustment
4. VIDEO OUT level check
1. 27 MHz Origin Oscillation Adjustment
(VC-344 Board)
Set the frequency of the clock for synchronization.
If deviated, the synchronization will be disrupted and the color
will become inconsistent.
If deviated, the synchronization will be disrupted and the color
will become inconsistent.
Mode
CAREMA
Subject
Arbitrary
Measurement Point
Pin qs of IC1501
Measuring Instrument
Frequency counter
Adjustment Page
F
Adjustment Address
10
Specified value
f = 13500000
± 68 Hz
Note 1:
Check that the data of page: 0, address: 10 is “00”.
Note 2:
Refer to “2. DISASSEMBLY”, when opening the VC-
344 board.
344 board.
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
2
F
10
Change the data and set the
frequency (f) to the specified
value.
frequency (f) to the specified
value.
3
F
10
Press PAUSE button.
4
0
01
00
Fig. 6-3-3
2.
S VIDEO OUT Y Level Adjustment (VC-344 Board)
Mode
CAMERA
Subject
Arbitrary
Measurement Point
Y signal terminal of
S VIDEO jack (75
S VIDEO jack (75
Ω terminated)
Measuring Instrument
Oscilloscope
Adjustment Page
C
Adjustment Address
25
Specified value
A = 1000
± 20 mVp-p
Note 1:
Check that the data of page: 0, address: 10 is “00”.
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
2
8
A0
Set the bit value of bit3 is
“1”, and press PAUSE
button. (Note 2)
“1”, and press PAUSE
button. (Note 2)
3
3
0C
02
Press PAUSE button.
4
C
25
Change the data and set the Y
signal level (A) to the
specified value.
signal level (A) to the
specified value.
5
C
25
Press PAUSE button.
6
8
A0
Set the bit value of bit3 is
“0”, and press PAUSE
button. (Note 2)
“0”, and press PAUSE
button. (Note 2)
7
3
0C
00
Press PAUSE button.
8
0
01
00
Note 2:
For the bit values, refer to “6-4. SERVICE MODE”, “4-
3. 3. Bit Value Discrimination”.
3. 3. Bit Value Discrimination”.
H
Center of luminance line
A
Fig. 6-3-4
IC1501
25
13
24
48
37
12
Measurement
Point
Point
VC-344 BOARD (SIDE B)
36
1
DCR-TRV255E/TRV260/TRV265/TRV265E
6-41
3.
S VIDEO OUT C Level Adjustment (VC-344 Board)
Mode
CAMERA
Subject
Arbitrary
Measurement Point
Chroma signal terminal of
S VIDEO jack (75
S VIDEO jack (75
Ω terminated)
External trigger: Y signal terminal of
S VIDEO jack (75
S VIDEO jack (75
Ω terminated)
Measuring Instrument
Oscilloscope
Adjustment Page
C
Adjustment Address
26, 27
Specified value
Cr level: A = 714
± 14 mVp-p (NTSC)
A = 700
± 14 mVp-p (PAL)
Cb level:B = 714
± 14 mVp-p (NTSC)
B = 700
± 14 mVp-p (PAL)
Burst level: C = 286
± 6 mVp-p (NTSC)
C = 300
± 6 mVp-p (PAL)
Note 1:
Check that the data of page: 0, address: 10 is “00”.
Note 2:
NTSC model: DCR-TRV260/TRV265
PAL model: DCR-TRV255E/TRV265E
PAL model: DCR-TRV255E/TRV265E
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
2
8
A0
Set the bit value of bit 3 to “1”,
and press PAUSE button.
(Note 3)
and press PAUSE button.
(Note 3)
3
3
0C
02
Press PAUSE button.
4
C
26
Change the data and set the
Cr signal level (A) to the
specified value.
Cr signal level (A) to the
specified value.
5
C
26
Press PAUSE button.
6
C
27
Change the data and set the
Cb signal level (B) to the
specified value.
Cb signal level (B) to the
specified value.
7
C
27
Press PAUSE button.
8
Check the burst signal (C) to
the specified value.
the specified value.
9
8
A0
Set the bit value of bit 3 to “0”,
and press PAUSE button.
(Note 3)
and press PAUSE button.
(Note 3)
10
3
0C
00
Press PAUSE button.
11
0
01
00
Note 3:
For the bit values, refer to “6-4. SERVICE MODE”, “4-
3. 3. Bit Value Discrimination”.
3. 3. Bit Value Discrimination”.
Fig. 6-3-5
H
C
A
0.28
µ
sec (NTSC)
0.23
µ
sec (PAL)
B
0.28
µ
sec (NTSC)
0.23
µ
sec (PAL)
DCR-TRV255E/TRV260/TRV265/TRV265E
6-42
4. VIDEO OUT Level Check (VC-344 Board)
Mode
CAMERA
Subject
Arbitrary
Measurement Point
Video terminal of A/V jack
(75
(75
Ω terminated)
Measuring Instrument
Oscilloscope
Specified value
Sync level:
A = 286
± 18 mVp-p (NTSC)
A = 300
± 18 mVp-p (PAL)
Burst level:
B = 286
± 18 mVp-p (NTSC)
B = 300
± 18 mVp-p (PAL)
Note:
NTSC model: DCR-TRV260/TRV265
PAL model: DCR-TRV255E/TRV265E
PAL model: DCR-TRV255E/TRV265E
Checking method:
Order Page Address Data
Procedure
1
Check that the SYNC level
(A) satisfies the specified
value.
(A) satisfies the specified
value.
2
Check that the burst level (B)
satisfies the specified value.
satisfies the specified value.
Fig. 6-3-6
H
B
A
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