Sony BVP-550, Maintenance Manual

Page: 84 / 924

4-32(E)
BVP-550
BVP-550P
4-4. Overall Electrical Alignment
4. Connect the oscilloscope to the TP54 (GND:TP53)/
Extension board extending VA-163.
Adjustment point :
1
RV200 (C4)/VA-163
Specifications : B = 880
±
5 mV
5. Connect the oscilloscope to the TP72 (GND:TP71)/
Extension board extending VA-163.
Specifications
: Adjust the iris control of the
lens.
A = 125 mV
6. Connect the oscilloscope to the TP52 (GND:TP51)/
Extension board extending VA-163.
Adjustment point :
1
RV300 (D4)/VA-163
Specifications : B = 880
±
5 mV
7. Connect the oscilloscope to the TP70 (GND:TP69)/
Extension board extending VA-163.
Specifications
: Adjust the iris control of the
lens.
A = 125 mV
8. Connect the oscilloscope to the TP50 (GND:TP49)/
Extension board extending VA-163.
Adjustment point :
1
RV400 (F4)/VA-163
Specifications : B = 880
±
5 mV
VA
TEST
R GAIN
R
G GAIN
R
B
B GAIN
1 2 3 4
F
G
E
D
B
C
A
VA-163 BOARD (COMPONENT SIDE)
CT200
RV200
CT300
CT400
RV400
RV300
4-4-11. VA MOD Adjustment
Equipment : Waveform monitor
Test point : TEST OUT connector
Preparations:
Connect the waveform monitor to the TEST OUT connec-
tor.
GAIN switch (on the side panel)
→
L (0 dB)
Iris of the lens
: CLOSE
RGB/ENC switch (on the side panel)
→
RGB
R/G/B switch (on the side panel)
→
R
Adjustment procedures:
1. VA MOD [R] Adjustment
MENU setting
:
MENU : Maintenance
PAGE : White Shading (M2)
ITEM : H Saw [R]
→
99
Adjustment point:
MENU : System config
PAGE : PR/VA/TEST (S3)
ITEM : VA MOD [R]
Specifications
: Flatten the portion A.
Adjust so that the level at portion A
does not fluctuate even if the setting
value for H Saw [R] varies from 99
to –99.
(
×
5)