Sony CCD-TRV128 / CCD-TRV228 / CCD-TRV228E / CCD-TRV328 / CCD-TRV428 / CCD-TRV428E (serv.man2) Service Manual ▷ View online
CCD-TRV128/TRV228/TRV228E/TRV328/TRV428/TRV428E
6-35
7. REC C/AFM Current Adjustment
7-1. Preparations
Note 1:
Note 1:
Check that the data of page: 0, address: 10 is “00”.
Order Page Address Data
Procedure
1
Close the cassette compartment
without inserting cassette.
without inserting cassette.
2
Set to the VTR stop mode.
3
0
01
01
4
C
14
01
Press PAUSE button.
5
A
10
10
Press PAUSE button.
6
7
10
02
Press PAUSE button.
7
A
1A
Note down the data.
8
A
1A
Set the following data, and
press PAUSE button.
06: NTSC model
26: PAL model
press PAUSE button.
06: NTSC model
26: PAL model
Note 2:
Don’t disconnect the DC power supply of camcoder dur-
ing the following adjustments.
When the following symptom occurs, reset the data of A
page to the values note down.
1) The power is shut off so that unit can not operate.
ing the following adjustments.
When the following symptom occurs, reset the data of A
page to the values note down.
1) The power is shut off so that unit can not operate.
7-2. REC C Current Check (VC-341 board)
Check the recording current level of the REC chroma signal.
If it is too low, chroma signal noise in playback picture will be
increased. If too high, Y signal noises will increase and white
modulation noises will be produced.
If it is too low, chroma signal noise in playback picture will be
increased. If too high, Y signal noises will increase and white
modulation noises will be produced.
Mode
VTR recording (PLAY/EDIT mode)
Signal
No signal
Measurement Point
REC RF (Pin 7 of CN007)
Measuring Instrument
Oscilloscope
(20 MHz BW LIMIT: OFF)
(20 MHz BW LIMIT: OFF)
Specified value
A = 50.8
± 3.0 mVp-p (NTSC)
A = 54.0
± 3.0 mVp-p (PAL)
Note 1:
Check that the data of page: 0, address: 10 is “00”.
Checking method:
Order Page Address Data
Procedure
1
Close the cassette compartment
without inserting cassette.
without inserting cassette.
2
Set to the VTR recording
mode. (Note 2)
mode. (Note 2)
3
0
01
01
4
3
91
30
5
3
92
20
6
C
25
Note down the data.
7
C
25
00
Press PAUSE button.
8
3
01
41
Press PAUSE button.
9
Check that the REC chroma
signal level (A) satisfies the
specified value, and note
down the signal level.
signal level (A) satisfies the
specified value, and note
down the signal level.
10
3
01
00
Press PAUSE button.
11
C
25
Set data noted down at step 6,
and press PAUSE button.
and press PAUSE button.
12
3
91
00
13
3
92
00
14
0
01
00
15
Perform “REC AFM Current
Adjustment” and “Processing
after Completed Adjustment”.
Adjustment” and “Processing
after Completed Adjustment”.
Note 2:
Use the REC buttons of the adjustment remote com-
mander (with HOLD switch set in the OFF position).
mander (with HOLD switch set in the OFF position).
Fig. 6-3-9
A
1.35
µ
sec
Center of the luminance line width
CCD-TRV128/TRV228/TRV228E/TRV328/TRV428/TRV428E
6-36
7-4. Processing after Completed Adjustment
Note:
Note:
Check that the data of page: 0, address: 10 is “00”.
Order Page Address Data
Procedure
1
Set to the VTR stop mode.
2
0
01
01
3
A
1A
Set data noted down at step 7
of “7-1. Preparations”, and
press PAUSE button.
of “7-1. Preparations”, and
press PAUSE button.
4
7
10
E2
Press PAUSE button.
5
A
10
00
Press PAUSE button.
6
C
14
00
Press PAUSE button.
7
0
01
00
7-3. REC AFM Current Adjustment (VC-341 board)
Check the recording current level of the REC AFM signal.
If it is too low, the audio S/N will be deteriorated. If too high,
color beets will be produced on self recording/playback image.
If it is too low, the audio S/N will be deteriorated. If too high,
color beets will be produced on self recording/playback image.
Mode
VTR recording (PLAY/EDIT mode)
Signal
No signal
Measurement Point
REC RF (Pin 7 of CN007)
Measuring Instrument
Oscilloscope
(20 MHz BW LIMIT: OFF)
(20 MHz BW LIMIT: OFF)
Adjustment Page
C
Adjustment Address
25
Specified value
NTSC model
A = (REC chroma signal level)
A = (REC chroma signal level)
× 0.292
± 0.9 mVp-p (Note 1)
PAL model
A = (REC chroma signal level)
A = (REC chroma signal level)
× 0.309
± 0.9 mVp-p (Note 1)
Note 1:
Check that the data of page: 0, address: 10 is “00”.
Note 2:
REC chroma signal level is noted down at step 9 of “REC
C Current Check”
C Current Check”
Adjusting method:
Order Page Address Data
Procedure
1
Close the cassette compartment
without inserting cassette.
without inserting cassette.
2
Set to the VTR recording
mode. (Note 3)
mode. (Note 3)
3
0
01
01
4
3
92
20
5
3
01
41
Press PAUSE button.
6
C
25
Change the data and set the
REC AFM signal level (A) to
the specified value.
REC AFM signal level (A) to
the specified value.
7
C
25
Press PAUSE button.
8
3
01
00
Press PAUSE button.
9
3
92
00
10
0
01
00
11
Perform “Processing after
Completed Adjustment”.
Completed Adjustment”.
Note 3:
Use the REC buttons of the adjustment remote com-
mander (with HOLD switch set in the OFF position).
mander (with HOLD switch set in the OFF position).
Fig. 6-3-10
A
0.67
µ
sec
Center of the luminance line width
CCD-TRV128/TRV228/TRV228E/TRV328/TRV428/TRV428E
6-37
3-5.
AUDIO SYSTEM ADJUSTMENTS
Before performing the audio system adjustments, check that the
data of page: 0, address: 10 is “00”.
If not, select page: 0, address: 10, and set data “00”.
data of page: 0, address: 10 is “00”.
If not, select page: 0, address: 10, and set data “00”.
[Connecting the measuring instruments for the audio]
Connect the audio system measuring instruments in addition to
the video system measuring instruments as shown in Fig. 6-3-11.
the video system measuring instruments as shown in Fig. 6-3-11.
Fig. 6-3-11
Main unit
47 k
Ω
47 k
Ω
: 1-249-437-11
Audio level meter
or distortion meter
TV monitor
A/V OUT
jack
Video
Audio
In Playback
1. BPF f
0
Adjustment (VC-341 board)
Set the BPF passing frequency of IC801 so that the AFM signal
can separate from the playback RF signal properly. If deviated,
the noises and distortions will increase during high volume play-
back.
can separate from the playback RF signal properly. If deviated,
the noises and distortions will increase during high volume play-
back.
Mode
VTR playback (PLAY/EDIT mode)
Signal
Alignment tape
For BPF adjustment
(WR5-11NS (NTSC))
(WR5-11CS (PAL))
(WR5-11NS (NTSC))
(WR5-11CS (PAL))
Measurement Point
Audio terminal of A/V OUT jack
Measuring Instrument
Distortion meter
Adjustment Page
C
Adjustment Address
30
Specified value
The distortion rate should be
minimum.
minimum.
Note:
Check that the data of page: 0, address: 10 is “00”.
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
2
C
30
Change the data and minimize
the distortion rate.
the distortion rate.
3
C
30
Press PAUSE button.
4
0
01
00
2. 1.5 MHz Deviation Adjustment (VC-341 board)
Adjust to the optimum 1.5 MHz audio FM signal deviation.
If the adjustment is not correct, its playback level will differ from
that other units.
If the adjustment is not correct, its playback level will differ from
that other units.
Mode
VTR playback (PLAY/EDIT mode)
Signal
Alignment tape
For checking operation
(WR5-5NSP (NTSC))
(WR5-5CSP (PAL))
(WR5-5NSP (NTSC))
(WR5-5CSP (PAL))
Measurement Point
Audio terminal of A/V OUT jack
Measuring Instrument
Audio level meter
Adjustment Page
C
Adjustment Address
2F
Specified value
–7.5
± 2.0 dBs
Note 1:
Check that the data of page: 0, address: 10 is “00”.
Note 2:
Perform “BPF f
0
Adjustment” before this adjustment.
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
2
C
2F
Change the data and set the
400 Hz audio signal level to
the specified value.
400 Hz audio signal level to
the specified value.
3
C
2F
Press PAUSE button.
4
0
01
00
CCD-TRV128/TRV228/TRV228E/TRV328/TRV428/TRV428E
6-38
6-4. SERVICE MODE
4-1.
ADJUSTMENT REMOTE COMMANDER
The adjustment remote commander is used for changing the cal-
culation coefficient in signal processing, EVR data, etc. The ad-
justment remote commander performs bi-directional
communication with the unit using the remote commander signal
line (LANC). The resultant data of this bi-directional communica-
tion is written in the non-volatile memory.
culation coefficient in signal processing, EVR data, etc. The ad-
justment remote commander performs bi-directional
communication with the unit using the remote commander signal
line (LANC). The resultant data of this bi-directional communica-
tion is written in the non-volatile memory.
1.
Using the Adjustment Remote Commander
1) Connect the adjustment remote commander to CN007 of VC-
341 board via I/F unit for LANC control (J-6082-521-A) and
CPC jig connector (J-6082-539-A).
CPC jig connector (J-6082-539-A).
2) Set the HOLD switch of the adjustment remote commander to
“HOLD” (SERVICE position). If it has been properly con-
nected, the LCD on the adjustment remote commander will
display as shown in Fig. 6-4-1.
nected, the LCD on the adjustment remote commander will
display as shown in Fig. 6-4-1.
Fig. 6-4-1
3) Operate the adjustment remote commander as follows.
• Changing the page
The page increases when the EDIT SEARCH+ button is
pressed, and decreases when the EDIT SEARCH– button is
pressed. There are altogether 16 pages, from 0 to F.
pressed, and decreases when the EDIT SEARCH– button is
pressed. There are altogether 16 pages, from 0 to F.
• Changing the address
The address increases when the FF (M) button is pressed,
and decreases when the REW (m) button is pressed. There
are altogether 256 addresses, from 00 to FF.
and decreases when the REW (m) button is pressed. There
are altogether 256 addresses, from 00 to FF.
• Changing the data (Data setting)
The data increases when the PLAY (N) button is pressed,
and decreases when the STOP (x) button is pressed. There
are altogether 256 data, from 00 to FF.
and decreases when the STOP (x) button is pressed. There
are altogether 256 data, from 00 to FF.
• Writing the adjustment data
The PAUSE button must be pressed to write the adjustment
data in the nonvolatile memory. (The new adjusting data will
not be recorded in the nonvolatile memory if this step is not
performed)
data in the nonvolatile memory. (The new adjusting data will
not be recorded in the nonvolatile memory if this step is not
performed)
4) After completing all adjustments, turn off the main power sup-
ply (8.4 V) once.
Page
Data
Address
Hexadecimal
notation
notation
LCD Display
Decimal notation
conversion value
conversion value
0 1 2 3 4 5 6 7 8 9 A B C D E F
0 1 2 3 4 5 6 7 8 9 A b c d E F
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
2. Precautions Upon Using
the Adjustment Remote Commander
Mishandling of the adjustment remote commander may erase the
correct adjustment data at times. To prevent this, it is recommended
that all adjustment data be noted down before beginning adjust-
ments and new adjustment data after each adjustment.
correct adjustment data at times. To prevent this, it is recommended
that all adjustment data be noted down before beginning adjust-
ments and new adjustment data after each adjustment.
Click on the first or last page to see other CCD-TRV128 / CCD-TRV228 / CCD-TRV228E / CCD-TRV328 / CCD-TRV428 / CCD-TRV428E (serv.man2) service manuals if exist.