Sony DSR-20MD, Service Manual

Page: 150 / 225

5-58
5-3. VIDEO SECTION ADJUSTMENTS
When performing adjustments, refer to the layout dia-
grams for adjustment related parts on page 5-88.
3-1. PREPARATIONS BEFORE ADJUSTMENT
3-1-1. Equipment Used
1) TV monitor
2) Oscilloscope with 2-phenomenon, 30 MHz band, and delay
mode (Unless specified otherwise, use a 10 : 1 probe)
3) Frequency counter
4) Digital voltmeter
5) Audio generator
6) Audio level meter
7) Audio distortion meter
8) Audio attenuator
9) Pattern generator (with VIDEO OUTPUT terminal and exter-
nal sync function)
10) Digital camera recorder
NTSC : DCR-VX1000
PAL
: DCR-VX1000E
11) Vectorscope
12) Alignment tape
• SW/OL reference (XH2-3)
Parts code: 8-967-997-11
• Audio operation check for NTSC (XH5-3)
Parts code: 8-967-997-51
• System operation check for NTSC (XH5-5)
Parts code: 8-967-997-61
• Audio operation check for PAL (XH5-3P)
Parts code: 8-967-997-55
• System operation check for PAL (XH5-5P)
Parts code: 8-967-997-66
• BIST check for NTSC (XH5-6)
Parts code: 8-967-997-71
• BIST check for PAL (XH5-6P)
Parts code: 8-967-997-76
13) Adjusting remote control unit (J-6082-053-B)
14) Multi CPC-8 jig (J-6082-388-A). (CN775 of the RP-228 board)
15) Extension board
• For extension between CN101 of the RP-228 board and
CN412 of the JC-19 board.
• For extension between CN102 of the RP-228 board and
CN411 of the JC-19 board. (30P, 0.5 mm) (J-6082-270-A)
• For extension between CN771 of the RP-228 board and
drum (M901) (10P, 1 mm) (J-6082-064-A)
• For extension between CN002 of the CM-56 board and
CN501 of the VA-102 board (8P, 1 mm) (J-6082-058-A)
• For extension between CN006 of the CM-56 board and the
reel motor (M904) (15P, 1.25 mm) (J-6902-354-A)
• For extension between CN001 of the CM-56 board and
CN101 of the MD-63 board (16P, 1 mm) (J-6082-020-A)
16) Regulated power supply
NTAC : DSR-20MD
PAL
: DSR-20MDP
3-1-2. Connection of Equipment
According to the specification for the input terminal (S VIDEO
input, VIDEO input, or DV input), connect measuring equipment
as shown in Fig. 5-3-1, and make adjustment.
The input terminal is specified in ( ) of the signal column.
Any input terminal can be used unless otherwise specified.
To switch between S VIDEO INPUT and VIDEO INPUT, use the
VIDEO SELECT button on the front panel.
Note 1:
In adjustments specifying for the S VIDEO input to be
used, using the VIDEO input would disable the product
specifications of this unit from being satisfied. Always
use the input signal specified.
Note 2:
If adjustments are used with the VTR with the S video
output terminal as the signal source, the performance of
this unit may be affected by the VTR. Use a pattern gen-
erator with a Y/C separator terminal as much as possible.