Sony DCR-TRV24E / DCR-TRV25E / DCR-TRV27E (serv.man2) Service Manual ▷ View online
5-48
DCR-TRV24E/TRV25E/TRV27E
4-3. APC & AEQ Adjustment (VC-281 board)
Mode
Playback
Signal
Recorded signal at “Preparations
before adjustments”
before adjustments”
Measurement Point
Pin w; of CN1002 (RF MON) (Note1)
Ext. trigger: Pin qj of CN1002 (SWP)
Ext. trigger: Pin qj of CN1002 (SWP)
Measuring Instrument
Oscilloscope
Adjustment Page
C
Adjustment Address
18, 19, 1B, 1C, 21, 2C
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 w; and Pin ql (GND) of
CN1002.
75
Ω
resistor (Parts code: 1-247-804-11)
Note2:
The “AGC Center Level Adjustment” must have already been
completed before starting this adjustment.
completed before starting this adjustment.
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
07
Set the data, and press PAUSE
button.
button.
6
3
02
Check that the data changes from
“07” to “00” in about 20 seconds
after pressing PAUSE button.
“07” to “00” in about 20 seconds
after pressing PAUSE button.
7
3
03
Check that the data is “00”.
(Note3)
(Note3)
8
Perform “Processing after
Completing Adjustments”.
Completing Adjustments”.
Note3:
If the data is other than “00”, adjustment has errors. Take an
appropriate remedial measures according to the errors referring to
the following table.
appropriate remedial measures according to the errors referring to
the following table.
Data
Contents of defect
20
Perform re-adjustment. (Note 4)
30
The machine is defective
50
Perform re-adjustment. (Note 4)
60
The machine is defective
80
The machine is defective
Note4:
If this data is displayed twice successively, the machine is defective.
4-4. Processing after Completing Adjustments
Order Page Address Data
Procedure
1
7
30
00
Set the data.
2
3
33
00
Set the data.
3
0
01
00
Set the data.
6.7 msec
PB RF signal is stable
Pin
qj
Pin
w;
Fig. 5-3-4.
5-49
DCR-TRV24E/TRV25E/TRV27E
5. PLL f
0
& LPF f
0
Fine Adjustment (VC-281 board)
Mode
VTR stop
Signal
Arbitrary
Measurement Point
Display data of page: 3, address: 02, 03
Measuring Instrument
Adjustment remote commander
Adjustment Page
C
Adjustment Address
1F, 20, 22, 29
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
0
01
01
Set the data.
2
3
01
30
Set the data, and press PAUSE
button.
button.
3
3
02
Check that the data changes to
“00” with in 5 sec. (Note2)
“00” with in 5 sec. (Note2)
4
3
03
Check that the data is “00”.
(Note3)
(Note3)
5
0
01
00
Set the data.
Note2:
If it isn’t satisfied, there are errors.
Note3:
If the data of page: 3, address: 03 is other than “00”, 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”.)
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”.)
Bit value of page: 3,
address: 03
address: 03
bit 2 = 1 or bit 3 = 1
bit 4 = 1 or bit 5 = 1
bit 6 = 1
Error contents
PLL f
0
fine adjustment is defective
PLL f
0
adjustment is defective
LPF f
0
is defective
5-50
DCR-TRV24E/TRV25E/TRV27E
3-4.
VIDEO SYSTEM ADJUSTMENTS
Note:
Before perform the video system adjustments, check that the
specified value of “54 MHz Origin Oscillation Adjustment” of
“CAMERA SYSTEM ADJUSTMENT” is satisfied.
And check that the data of page: 0, address: 10 is “00”. If not, set
data: 00 to this address.
specified value of “54 MHz Origin Oscillation Adjustment” of
“CAMERA SYSTEM ADJUSTMENT” is satisfied.
And check that the data of page: 0, address: 10 is “00”. If not, set
data: 00 to this address.
1. Chroma BPF f
0
Adjustment (VA-117 board)
Set the center frequency of IC4101 chroma band-pass filter.
Mode
Camera
Subject
Arbitrary
Measurement Point
CH1: Chroma signal terminal of S
VIDEO jack (75
VIDEO jack (75
Ω
terminated)
CH2: Y signal terminal of S VIDEO jack
(75
(75
Ω
terminated)
Measuring Instrument
Oscilloscope
Adjustment Page
C
Adjustment Address
28
Specified Value
A = 100mVp-p or less
B = 200mVp-p or more
B = 200mVp-p or more
Note:
The data of page: 0, address: 10 must be “00”.
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
Set the data.
2
Check that the burst signal (B) is
output to the chroma signal
terminal of S VIDEO jack.
output to the chroma signal
terminal of S VIDEO jack.
3
3
0C
04
Set the data, and press PAUSE
button.
button.
4
C
28
Change the data for minimum
amplitude of the burst signal
level (A).
(The data should be “00” to “0F”.)
amplitude of the burst signal
level (A).
(The data should be “00” to “0F”.)
5
C
28
Press PAUSE button.
6
3
0C
00
Set the data, and press PAUSE
button.
button.
7
Check that the burst signal level
(B) satisfies the specified value.
(B) satisfies the specified value.
8
0
01
00
Set the data.
2. S VIDEO OUT Y Level Adjustment (VC-281 board)
Mode
Camera
Subject
Arbitrary
Measurement Point
Y signal terminal of S VIDEO jack
(75
(75
Ω
terminated)
Measuring Instrument
Oscilloscope
Adjustment Page
C
Adjustment Address
25
Specified Value
A = 1000 ± 14mV
Note:
The data of page: 0, address: 10 must be “00”.
Switch setting:
DEMO MODE (Menu setting) ................................................ OFF
DEMO MODE (Menu setting) ................................................ OFF
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
Set the data.
2
3
0C
02
Set the data, and press PAUSE
button.
button.
3
C
25
Change the data and set the Y
signal level (A) to the specified
value.
signal level (A) to the specified
value.
4
C
25
Press PAUSE button.
5
3
0C
00
Set the data, and press PAUSE
button.
button.
6
0
01
00
Set the data.
CH1
CH2
A
H
CH1
H
B
When the data of page: 3, address: 0C, is 04:
When the data of page: 3, address: 0C, is 00:
Fig. 5-3-5.
H
Center of luminance line
A
Fig. 5-3-6.
5-51
DCR-TRV24E/TRV25E/TRV27E
3. S VIDEO OUT Chroma Level Adjustment
(VC-281 board)
Mode
Camera
Subject
Arbitrary
Measurement Point
Chroma signal terminal of S VIDEO
jack (75
jack (75
Ω
terminated)
External trigger: Y signal terminal of
S VIDEO jack
S VIDEO jack
Measuring Instrument
Oscilloscope
Adjustment Page
C
Adjustment Address
26, 27
Specified Value
Cr level: A = 700 ± 14mV
Cb level:B = 700 ± 14mV
Burst level: C = 300 ± 6mV
Cb level:B = 700 ± 14mV
Burst level: C = 300 ± 6mV
Note:
The data of page: 0, address: 10 must be “00”.
Switch setting:
DEMO MODE (Menu setting) ................................................ OFF
DEMO MODE (Menu setting) ................................................ OFF
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
Set the data.
2
3
0C
02
Set the data, and press PAUSE
button.
button.
3
C
26
Change the data and set the Cr
signal level (A) to the specified
value.
signal level (A) to the specified
value.
4
C
26
Press PAUSE button.
5
C
27
Change the data and set the Cb
signal level (B) to the specified
value.
signal level (B) to the specified
value.
6
C
27
Press PAUSE button.
7
Check that the burst signal level
(C) is satisfied the specified value.
(C) is satisfied the specified value.
8
3
0C
00
Set the data, and press PAUSE
button.
button.
9
0
01
00
Set the data.
4. VIDEO OUT Y, Chroma Level Check (VC-281 board)
Mode
Camera
Subject
Arbitrary
Measurement Point
Video terminal of AUDIO VIDEO
jack (75
jack (75
Ω
terminated)
Measuring Instrument
Oscilloscope
Specified Value
Sync level: A = 300 ± 18mV
Burst level: B = 300 ± 18mV
Burst level: B = 300 ± 18mV
Note:
The data of page: 0, address: 10 must be “00”.
Switch setting:
DEMO MODE (Menu setting) ................................................ OFF
DEMO MODE (Menu setting) ................................................ OFF
Adjusting method:
Order Page Address Data
Procedure
1
3
0C
02
Set the data, and press PAUSE
button.
button.
2
Check that the sync signal level
(A) satisfies the specified value.
(A) satisfies the specified value.
3
Check that the burst signal level
(B) satisfies the specified value.
(B) satisfies the specified value.
4
3
0C
00
Set the data, and press PAUSE
button.
button.
H
C
A
0.23
µ
sec
B
0.23
µ
sec
H
B
A
Fig. 5-3-7.
Fig. 5-3-8.
Click on the first or last page to see other DCR-TRV24E / DCR-TRV25E / DCR-TRV27E (serv.man2) service manuals if exist.