Sony WLL-RX55, Руководство по обслуживанию

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3-12 (E)
WLL-RX55
3-3-5. STAIR CASE Adjustment
Tools
. Oscilloscope: Tektronix TDS3054B or equivalent
. Extension board: EX-854
(Sony Part No.: A-8344-228-A)
Preparations
1. Turn OFF the power of the unit, and extend the VA-
220 board using the EX-854 board.
2. Turn ON the power of the unit, and warm up the unit
for about ten minutes.
Adjustment Procedure
Equipment: Oscilloscope
Test Point: TP502 (GND : E4)/VA-220 board
Adjustment Point:
1
RV502/VA-220 board
1 RV501/VA-220 board
Specifications: A = 10.0
±
0.5 V p-p ( 1 RV502)
B = 0
±
0.5 V dc (
1
RV501)
Setting after Adjustment
Restore the VA-220 board to the original position.
3-3-6. RM PIX Level Check
Tools
. Master setup unit: MSU-700A, or MSU-750
. Oscilloscope: Tektronix TDS3054B or equivalent
.
Extension board: EX-854
(Sony Part No.: A-8344-228-A)
Preparations
1. Turn OFF the power of the unit, and extend the VA-
220 board using the EX-854 board.
2. Set the switch S701 on the VA-220 board to PIX.
(Refer to Section 1-7.)
3. Turn ON the power of the unit and peripheral equip-
ment, and warm them up for about ten minutes.
4. Menu setting:
MENU:
Setup
ITEM: WF SEQ
→
4
BARS
→
CB1
5. MSU-700A/750 setting:
BARS button
→
ON (Lit)
PICTURE MONITOR button
→
ENC (Lit)
Checking Procedure
Equipment: Oscilloscope
Test Point: TP703 (GND : E5)/VA-220 board
Specifications: 1.0
±
0.1 V p-p
Setting after Checking
. Menu setting:
MENU:
Setup
ITEM: WF SEQ
→
3
. Set the switch S701 on the VA-220 board to VIDEO.
(Refer to Section 1-7.)
.
Restore the VA-220 board to the original position.
B
GND
A
RV151
RV152
RV201
R
V202
RV203
RV204
RV205
RV206
R
V301
RV401
RV501
RV502
RV601
RV701
RV702
RV703
RV704 RV706 RV707
S501
S601
S701
TP31
TP33
TP34
TP35
TP201 TP202 TP203
TP301
TP402
TP501
TP502
TP602
TP701
TP702
TP703
TP801
TP802
TP803
E1
E2
E3
E4
E5
A
B C D E F G H J
1
2
3
4
5
VA-220 BOARD (A SIDE)
A