Sony PLM-S700E Service Manual page 19

VIDEO BLOCK
To adjust the video block, connect a pattern generator as shown
below. As video input signals for adjustment, enter video output
signals (color bar signals), unless otherwise specified.
Pattern Generator
VIDEO IN jack (J1002)
Preparation:
PAL
Sub-Color
(NTSC)
Switch the PAL
Signal mode (NTSC)
[4fsc FreeRun Adjustment]
Condition:
Input signal No signal
YC-148 board CN1003 pin 4
Measurement point
Measuring equipment Frequency Counter
Adjustment page F
Adjustment address 55
Specification value 17.73450 MHz ± 20 Hz (PAL)
Connection:
YC-148 Board
CN1003 pin 4\
(4FSC)
Adjustment Procedure:
(1) Connect a frequency counter to the CN1003 pin 4 on the
YC-148 board.
(2) Set (or confirm) data: 01 to page: 0, address: 01.
(Cancel F page protect)
(3) On page: F, address: 55, change data with the PLAY and
STOP buttons and press the PAUSE button to write data so
that the frequency counter reading satisfies the specification
value.
Adjustment and Adjustment Parts: YC-148 board (see page 3-15)
Set
Page Address Data
F 54 5B
(F) (54) (80)
F 14 01
(F) (14) (00)
Frequency Counter
+
–
[Video Mute Level Adjustment]
Condition:
Input signal
Measurement point
Measuring equipment
Adjustment page
Adjustment address
Specification value
Connection:
YC-148 Board
CN1003 pin 7 (YOUT)
CN1003 pin 1 (GND)
Adjustment Procedure:
(1) Connect a oscilloscope to the CN1003 pin 7 on the YC-148
board.
(2) Set (or confirm) data: 01 to page 0, address 01. (Cancel F
page protect)
(3) On page F, address: 52, change data with the PLAY and STOP
buttons and press the PAUSE button to write data so that the
A level of wafeform on the oscilloscope satisfies the speci-
fication value.
11H
9H 10H
Adjustment and Adjustment Parts: YC-148 board (see page 3-15)
3-7
All black (IRE 0%) signal (No set up)
YC-148 board CN1003 pin 7
Oscilloscope
F
52
0 ± 0.03 Vp-p
Oscilloscope
(DC range)
+
–
24H
25H
A