DOWNLOAD Sony DCR-TRV238E / DCR-TRV239E (serv.man2) Service Manual ↓ Size: 5.44 MB | Pages: 127 in PDF or view online for FREE

Model
DCR-TRV238E DCR-TRV239E (serv.man2)
Pages
127
Size
5.44 MB
Type
PDF
Document
Service Manual
Brand
Device
Movie / LEVEL 2
File
dcr-trv238e-dcr-trv239e-sm2.pdf
Date

Sony DCR-TRV238E / DCR-TRV239E (serv.man2) Service Manual ▷ View online

5-35
DCR-TRV238E/TRV239E
5-3. VIDEO SECTION ADJUSTMENT
3-1.
PREPARATIONS BEFORE ADJUSTMENTS
Use the following measuring instruments for video section
adjustments.
3-1-1.
Equipment to Required
1)
TV monitor
2)
Oscilloscope (dual-phenomenon, band width above 30 MHz
with delay mode) (Unless specified otherwise, use a 10 : 1
probe.)
3)
Frequency counter
4)
Pattern generator with video output terminal
5)
Digital voltmeter
6)
Audio generator
7)
Audio level meter
8)
Audio distortion meter
9)
Audio attenuator
10) Regulated power supply
11) Digital8 alignment tapes
• SW/OL standard (WR5-2D)
Parts code: 8-967-993-22
• Audio operation check for PAL (WR5-3CD)
Parts code: 8-967-993-37
• System operation check for PAL (WR5-5CD)
Parts code: 8-967-993-47
12) Hi8/standard8 alignment tapes
• For tracking adjustment (WR5-1CP)
Parts code : 8-967-995-07
• For video frequency characteristics adjustment (WR5-7CE)
Parts code : 8-967-995-18
• For checking Standard 8 mode operations
For LP (WR5-4CL)
Parts code : 8-967-995-56
For SP (WR5-5CSP)
Parts code : 8-967-995-47
Note :
The following alignment tapes can also be used.
1) WR5-3CL (8-967-995-36)
2) WR5-4CSP (8-967-995-46)
• For checking Hi8 mode operations
For LP (WR5-8CLE)
Parts code : 8-967-995-57
For SP (WR5-8CSE)
Parts code : 8-967-995-48
• For Checking AFM stereo operations (WR5-9CS)
Parts code : 8-967-995-28
• For BPF adjustment (WR5-11CS)
Parts code : 8-967-995-76
13) Adjustment remote commander (J-6082-053-B)
14) CPC-13 jig (J-6082-443-A)
5-36
DCR-TRV238E/TRV239E
3-1-2.
Precautions on Adjusting
Note1:
Before performing the adjustments, check the data of page: 0,
address: 10 is “00”. If not, set data: 00 to this address.
1)
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
PLAYER” or set the “Forced VTR Power ON mode” using the
adjustment remote commander (Note2).
To set to the Camera mode, set the power switch to “CAMERA”
or set the “Forced Camera Power ON mode” using the
adjustment remote commander (Note3).
After completing adjustments, be sure to exit the “Forced VTR
Power ON Mode” or “Forced Camera Power ON Mode”.
(Note4)
2)
The front panel block (SI-032 board (Microphone amp, remote
commander receiver), FP-411 flexible (MIC jack, Head phone
jack, LANC jack, MF photo sensor)) must be assembled for
connecting the adjustment remote commander.
To remove it, disconnect the following connector.
VC-276 board CN1103 (30P 0.5mm)
3)
As removing the cabinet (R) assembly (removing CN1110 of
the VC-276 board) means removing the lithium 3V power
supply (BT001 on the CF-2500 block), 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-
diagnosis data (data of page: 2, address: B0 to C6) and the data
on history use (data of page: 2, address: A5 to AA). (Refer to
“5-4.Service Mode”.)
4)
The cabinet (R) assembly (CF-2500 block, LCD bock) need
not be connected to operate the VTR block. (Use the adjustment
remote commander, to operate the VTR block.) When removing
the cabinet (R) assembly, disconnect the following connector.
1. VC-276 board CN1110 (22P, 0.5mm)
2. VC-276 board CN1106 (20P, 0.8mm)
5)
The viewfinder block is need not be connected. To remove it,
disconnect the following connector.
VC-276 board CN7001 (20P, 0.5mm)
6)
The lens block (CD-357 board) need not be connected. To
remove, disconnect the following connectors.
1. VC-276 board CN1501 (16P, 0.5mm)
2. VC-276 board CN1551 (24P, 0.5mm)
7)
By setting the “Forced VTR Power ON mode” or “Forced
Camera Power ON mode”, the video section can be operate
even if the cabinet (L) assembly (SS-1380 block) has been
removed. When removing the cabinet (L) assembly, disconnect
the following connector.
1. VC-276 board CN1109 (12P 0.8mm)
Note2:
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 the PAUSE
button.
The above procedure will enable the VTR power to be turned on
with the cabinet (L) assembly (SS-1380 block) removed.
After completing adjustments, be sure to exit the “Forced VTR
Power ON mode”.
Note3:
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 the PAUSE
button.
The above procedure will enable the camera power to be turned
on with the cabinet (L) assembly (SS-1380 block) removed.
After completing adjustments, be sure to exit the “Forced Camera
Power ON mode”.
Note4:
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 the PAUSE
button.
3) Select page: 0, address: 01, and set data: 00.
5-37
DCR-TRV238E/TRV239E
3-1-3.
Adjusting Connectors
Some of the adjusting points of the video section are concentrated
at VC-276 board CN1108. Connect the measuring instruments via
the CPC-13 jig (J-6082-443-A). The following table lists the pin
numbers and signal names of CN1108.
Table 5-3-1.
3-1-4.
Connecting the Equipment
Connect the measuring instruments as shown in Fig. 5-3-2 and
perform the adjustments.
Fig. 5-3-2.
Adjustment
remote
commander
LANC jack
Main unit
AUDIO/VIDEO jack
TV monitor
VIDEO
(Yellow)
AUDIO L (White)
AUDIO R (Red)
Pin No.
1
2
3
4
5
6
7
8
9
10
Signal Name
REG GND
N. C.
BPF MONI
N. C.
PB RF
REG GND
N. C.
RF SWP
N. C.
N. C.
Pin No.
11
12
13
14
15
16
17
18
19
20
Signal Name
VCO
EVF VG
RF SWP
N. C.
CAP FG
RF MON
N. C.
REG GND
REG GND
REG GND
CN1108
20
1
Remove the 
CPC lid
Fig. 5-3-1.
5-38
DCR-TRV238E/TRV239E
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 specified,
use whichever type.
Digital8 alignment tape
Name
Usage
SW/OL standard
Switching position adjustment
(WR5-2D)
Audio operation check
Audio system adjustment
(WR5-3CD),
System operation check
Operation check
(WR5-5CD)
Hi8/standard 8 alignment tape
Fig. 5-3-3. Color Bar Signal of the Alignment Tape
3-1-6.
Input/output Level and Impedance
Video input/output
Special stereo minijack, 1Vp-p, 75
, unbalanced, sync negative
S video input/output
4-pin mini DIN
Luminance signal: 1Vp-p, 75
, unbalanced, sync negative
Chrominance signal: 0.300Vp-p, 75
, unbalanced
Audio input/output
Special stereo minijack:
Input: –7.5dBs, input impedance more than 47k
Output: –7.5dBs, (at load impedance 47k
), impedance less
than 2.2k
Tape type
ME ......... Particle type metal tape
MP .......... Evaporated type metal tape
Color bar signal waveform
Name
Tracking
WR5-1CP
Video frequency
characteristics
WR5-7CE
Operation check
(SP mode)
WR5-5CSP
Operation check
(SP mode)
WR5-8CSE
Operation check
(LP mode)
WR5-4CL
Operation check
(LP mode)
WR5-8CLE
AFM stereo
Operation check
WR5-9CS
BPF adjustment
WR5-11CS
Record
-ing
mode
Standard 8
Hi8
Standard 8
Hi8
Standard 8
Hi8
Standard 8
Standard 8
Tape
type
MP
ME
MP
ME
MP
ME
MP
MP
Tape
speed
SP
LP
SP
SP
LP
LP
SP
SP
Usage
Tape path
adjustment
Switching
position
adjustment
Frequency
characteristics
adjustment
Checking
operations
AFM stereo
Checking
operations
BPF
adjustment
Fig.5-3-3. shows the 75% color bar signals recorded on the alignment
tape.
Note:
Measure using the VIDEO terminal (Terminated at 75
).
1V
0.7V
0.3V
White (100%)
Y
ello
w
Cy
an
Green
Magenta
Red
Blue
Burst signal
Horizontal sync signal
0.3V
(100%)
Y
ello
w
Cy
an
Green
Magenta
Red
Blue
White
Blac
k
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