Sony DCR-TRV250 (serv.man4) Service Manual ▷ View online
DCR-TRV250
6-43
COVER
COVER
6-3. VIDEO SECTION ADJUSTMENTS
3-1.
PREPARATIONS BEFORE ADJUSTMENTS
Use the following measuring instruments for video section adjust-
ments.
ments.
3-1-1.
Equipment to Required
1) TV monitor
2) Oscilloscope (dual-phenomenon, band width above 30 MHz
2) Oscilloscope (dual-phenomenon, band width above 30 MHz
with delay mode) (Unless specified otherwise, use a 10 : 1
probe)
probe)
3) Frequency counter
4) Digital voltmeter
5) Audio level meter
6) Regulated power supply
7) Digital8 alignment tapes
4) Digital voltmeter
5) Audio level meter
6) Regulated power supply
7) Digital8 alignment tapes
• SW/OL standard (WR5-2D)
Parts code: 8-967-993-22
• Audio operation check for NTSC (WR5-3ND)
Parts code: 8-967-993-32
• System operation check for NTSC (WR5-5ND)
Parts code: 8-967-993-42
8) Adjustment remote commander (J-6082-053-B)
9) CPC jig connector (J-6082-539-A) (Note)
10) I/F unit for LANC control (J-6082-521-A) (Note)
9) CPC jig connector (J-6082-539-A) (Note)
10) I/F unit for LANC control (J-6082-521-A) (Note)
Note:
The “Jig Modification” is necessary for connecting the ad-
justment remote commander to this set.
justment remote commander to this set.
[Jig Modification]
Connect the LANC SIG pin of the I/F unit for LANC control to the land of pin 1 of the CPC jig connector with a jumper wire.
This modification is required in the DCR-TRV250 only. Be sure to disconnect the jumper wire when using the I/F unit for LANC control
or CPC jig connector on other models.
This modification is required in the DCR-TRV250 only. Be sure to disconnect the jumper wire when using the I/F unit for LANC control
or CPC jig connector on other models.
1
CPC jig connector
(J-6082-539-A)
LANC jack
LANC
jack
jack
The other side
CX2000
CN1
I/F unit for LANC control
(J-6082-521-A)
(J-6082-521-A)
Fig. 6-3-1
DCR-TRV250
6-44
3-1-2.
Precautions on Adjusting
1) Connect the adjustment remote commander to CN1011 of VC-
305 board via I/F unit for LANC control (J-6082-521-A) and
CPC jig connector (J-6082-539-A). The “Jig Modification” is
necessary for connecting the adjustment remote commander
to this set.
Modify the jig by referring to page 6-43.
To operate the adjustment remote commander, connect the AC
power adapter to the DC IN jack of I/F unit for LANC control,
or connect the L series Info-LITHIUM battery to the battery
terminal of I/F unit for LANC control.
CPC jig connector (J-6082-539-A). The “Jig Modification” is
necessary for connecting the adjustment remote commander
to this set.
Modify the jig by referring to page 6-43.
To operate the adjustment remote commander, connect the AC
power adapter to the DC IN jack of I/F unit for LANC control,
or connect the L series Info-LITHIUM battery to the battery
terminal of I/F unit for LANC control.
2) The adjustments of this unit are performed in the VTR mode
or camera mode.
To set to the VTR mode, set the power switch to “VCR” or set
the “Forced VTR Power ON mode” using the adjustment re-
mote commander (Note 1).
To set to the camera mode, set the power switch to “CAM-
ERA” or set the “Forced Camera Power ON mode” using the
adjustment remote commander (Note 2).
After completing adjustments, be sure to exit the “Forced VTR
Power ON Mode” or “Forced Camera Power ON Mode”. (Note
3).
To set to the VTR mode, set the power switch to “VCR” or set
the “Forced VTR Power ON mode” using the adjustment re-
mote commander (Note 1).
To set to the camera mode, set the power switch to “CAM-
ERA” or set the “Forced Camera Power ON mode” using the
adjustment remote commander (Note 2).
After completing adjustments, be sure to exit the “Forced VTR
Power ON Mode” or “Forced Camera Power ON Mode”. (Note
3).
3) The front panel block (SI-035 board, microphone unit, video
light) need not be connected. To remove, disconnect the fol-
lowing connector.
lowing connector.
VC-305 board CN1002 (28P, 0.5 mm)
4) As removing the cabinet (R) assembly (removing CN1007 of
the VC-305 board) means removing the lithium 3 V power
supply (CF-3000 block BT001), data such as date, time, user-
set menus will be lost. After completing adjustments, reset these
data. If the cabinet (R) assembly has been removed, the self-
diagnosis data, data on history of use (total drum rotation time
etc.) will be lost. Before removing, note down the self-diagno-
sis data (data of page: 7, address: B0 to C6) and the data on
history use (data of page: 7, address: A7 to A9 and C8 to CF).
(Refer to “6-4.Service Mode”.)
supply (CF-3000 block BT001), data such as date, time, user-
set menus will be lost. After completing adjustments, reset these
data. If the cabinet (R) assembly has been removed, the self-
diagnosis data, data on history of use (total drum rotation time
etc.) will be lost. Before removing, note down the self-diagno-
sis data (data of page: 7, address: B0 to C6) and the data on
history use (data of page: 7, address: A7 to A9 and C8 to CF).
(Refer to “6-4.Service Mode”.)
5) The cabinet (R) assembly (CF-3000 block, FK-3000 block,
PD-180 board, LCD block) need not be connected to operate
the VTR block. (Note 4) When removing the cabinet (R) as-
sembly, disconnect the following connectors.
the VTR block. (Note 4) When removing the cabinet (R) as-
sembly, disconnect the following connectors.
1. VC-305 board CN1007 (18P, 0.5 mm)
2. VC-305 board CN1003 (20P, 0.8 mm)
2. VC-305 board CN1003 (20P, 0.8 mm)
6) The lens block (CD-418 board) need not be connected. To re-
move, disconnect the following connectors.
1. VC-305 board CN1501 (14P, 0.5 mm)
2. VC-305 board CN1551 (24P, 0.5 mm)
2. VC-305 board CN1551 (24P, 0.5 mm)
7) The EVF block need not be connected. To remove, disconnect
the following connectors.
VC-305 board CN1005 (20P, 0.5 mm)
8) By setting the “Forced VTR Power ON mode” or “Forced Cam-
era Power ON mode”, the video section can be operate even if
the control switch block (SS-3000) has been removed. When
removing the control switch block (SS-3000), disconnect the
following connector.
the control switch block (SS-3000) has been removed. When
removing the control switch block (SS-3000), disconnect the
following connector.
VC-305 board CN1009 (12P, 0.8 mm)
Note 1:
Setting the “Forced VTR Power ON” mode (VTR mode)
1) Select page: 0, address: 01, and set data: 01.
2) Select page: D, address: 10, set data: 02, and press
1) Select page: 0, address: 01, and set data: 01.
2) Select page: D, address: 10, set data: 02, and press
the PAUSE button.
The above procedure will enable the VTR power to be
turned on with the control switch block (SS-3000) re-
moved.
After completing adjustments, be sure to exit the “Forced
VTR Power ON mode”.
turned on with the control switch block (SS-3000) re-
moved.
After completing adjustments, be sure to exit the “Forced
VTR Power ON mode”.
Note 2:
Setting the “Forced Camera Power ON” mode (Camera
mode)
1) Select page: 0, address: 01, and set data: 01.
2) Select page: D, address: 10, set data: 01, and press
mode)
1) Select page: 0, address: 01, and set data: 01.
2) Select page: D, address: 10, set data: 01, and press
the PAUSE button.
The above procedure will enable the camera power to be
turned on with the control switch block (SS-3000) re-
moved.
After completing adjustments, be sure to exit the “Forced
Camera Power ON mode”.
turned on with the control switch block (SS-3000) re-
moved.
After completing adjustments, be sure to exit the “Forced
Camera Power ON mode”.
Note 3:
Exiting the “Forced Power ON” mode
1) Select page: 0, address: 01, and set data: 01.
2) Select page: D, address: 10, set data: 00, and press
1) Select page: 0, address: 01, and set data: 01.
2) Select page: D, address: 10, set data: 00, and press
the PAUSE button.
3) Select page: 0, address: 01, and set data: 00.
Note 4:
When the FK-3000 block or the CF-3000 block is re-
moved, the VTR does an unusual movement for one
minute after the power is turned on. So, operate the VTR
by the adjustment remote commander (with the HOLD
switch set in the OFF position) after it passes for more
than one minute.
moved, the VTR does an unusual movement for one
minute after the power is turned on. So, operate the VTR
by the adjustment remote commander (with the HOLD
switch set in the OFF position) after it passes for more
than one minute.
DCR-TRV250
6-45
3-1-3.
Adjusting Connectors
Some of the adjusting points of the video section are concentrated
at VC-305 board CN1011. Connect the measuring instruments via
I/F unit for LANC control (J-6082-521-A) and CPC jig connector
(J-6082-539-A).
The following table shows the pin No. and signal name of CN1011.
at VC-305 board CN1011. Connect the measuring instruments via
I/F unit for LANC control (J-6082-521-A) and CPC jig connector
(J-6082-539-A).
The following table shows the pin No. and signal name of CN1011.
Pin No.
Signal Name
Pin No.
Signal Name
1
FRRV
9
RF MON
2
8 mm PB RF
10
REG GND
3
BPF MONI
11
N. C.
4
CAP FG
12
N. C.
5
RF SWP
13
XLANC POWER ON
6
REG GND
14
EVF VG
7
XLANC JACK IN
15
VCO
8
REG GND
16
LANC SIG
Table 6-3-1
The following table lists the test point of I/F unit of for LANC
control.
control.
Pin No.
Signal Name
Pin No.
Signal Name
BL
15
EVF VCO
14
EVF VG
BL 4.75
9
PB RF (MON)
3
BPF MONI
6, 8, 10
GND
TMS
7
REC RF (RF IN)
TDI
TDO
5
SWP
TCK
4
CAP FG
2
IR VIDEO
Note:
Pin No. are those of CN1011.
Table 6-3-2
3-1-4. Connecting the Equipment
Connect the measuring instruments as shown in Fig. 6-3-3 and
perform the adjustments.
perform the adjustments.
Fig. 6-3-2
Connecting the TV Monitor and Adjustment Remote Commander
Fig. 6-3-3
Note 1:
The “Jig Modification” is necessary for connecting the adjustment remote commander to this set.
Modify the jig by referring to page 6-43.
Modify the jig by referring to page 6-43.
Note 2:
Use either the AC power adaptor or the InfoLITHIUM battery as the power supply of I/F unit for LANC control.
L series
Info
LITHIUM
battery
(7.2Vdc)
Info
LITHIUM
battery
(7.2Vdc)
Video
(yellow)
(yellow)
Color monitor
Audio R (red)
Audio L (white)
I/F unit for
LANC control
(J-6082-521-A)
LANC control
(J-6082-521-A)
CPC jig connector
(J-6082-539-A)
(J-6082-539-A)
Adjustment
remote commander
remote commander
AC power adaptor
LANC
jack
jack
A/V OUT jack
MAIN UNIT
VC-305 BOARD
CN1011
CN1011
CN1011
16
1
Conductor
side
side
DCR-TRV250
6-46
3-1-5. Alignment Tape
The following table lists alignment tapes which are available.
Use the tape specified in the signal column for each adjustment. If
the type of tape to be used for checking operations is not speci-
fied, use whichever type.
Use the tape specified in the signal column for each adjustment. If
the type of tape to be used for checking operations is not speci-
fied, use whichever type.
Fig. 6-3-4 Shows the color bar signals recorded on the alignment
tape.
tape.
Note:
Measure using the VIDEO terminal (Terminated at 75
Ω).
Table 6-3-3
Fig. 6-3-4 Color Bar Signal of the Alignment Tape
1 V
0.714 V
0.286 V
White (75%)
White (100%)
Y
ello
w
Cy
an
Green
Magenta
Red
Blue
Burst signal
0.286 V
Q
I
Horizontal sync signal
(75%)
White
Y
ello
w
Cy
an
Green
Magenta
Red
Blue
Q
I
White
(100%)
Black
Color bar signal waveform
Color bar pattern
3-1-6. Input/output Level and Impedance
S video output
4-pin mini DIN
Luminance signal:
Luminance signal:
1 Vp-p, 75
Ω, unbalanced, sync negative
Chrominance signal:
0.286 Vp-p, 75
Ω, unbalanced
Digital8 alignment tape
Name
Usage
SW/OL standard (WR5-2D) Switching position adjustment
Audio operation check
WR5-3ND
Audio system adjustment
System operation check
WR5-5ND
Operation check
Audio/Video output
AV MINIJACK
Video
Video
1 Vp-p, 75
Ω, unbalanced, sync negative
Audio
327 mV, (at load impedance 47 k
Ω)
Output impedance less than 2.2 k
Ω
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