Sony WLL-RX55, Maintenance Manual

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3-8 (E)
WLL-RX55
b
c
GND
a
WF OUTPUT
Waveform/Vector monitor
WF
REMOTE
WLL-RX55 Connector panel
CCA-5 CABLE
(max. 200 m)
Master serup unit
MSU-700A/750
3-3-2. GRBY Output Level Adjustment
n
Perform the adjustments in Sections 3-3-2 and 3-3-3
continuously.
Tools
. Master setup unit: MSU-700A, or MSU-750
. Oscilloscope: Tektronix TDS3054B or equivalent
.
Waveform/Vector monitor:
Tektronix 1750A or equivalent (for
NTSC)
Tektronix 1751A or equivalent (for
PAL)
.
Extension board: EX-854
(Sony Part No.: A-8344-228-A)
Connection
Preparations
1. Turn OFF the power of the unit, and connect the unit
and equipment as shown in the connection diagram.
2. Extend the VA-220 board using the EX-854 board.
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)
G Output Level Adjustment
1. G video level adjustment
Equipment:
Oscilloscope
Test Point: TP202 (GND : E3)/VA-220 board
Adjustment Point: 1 RV201/VA-220 board
Specifications: a = 500
±
10 mV p-p
2. MSU-700A/750 setting:
WAVEFORM MONITOR button
→
G (Lit)
3. WF level adjustment
Equipment:
Waveform monitor
Test Point: WF OUTPUT connector
Adjustment Point: 1 RV401/VA-220 board
Specifications: b = 100
±
1 IRE (for NTSC)
b = 700
±
10 mV (for PAL)
4. Measure the DC level c of the G signal.