Read Panasonic WJ-SX155 Service Manual Simplified online
For Adjustment Procedure of Main and Power Boards, refer
to the service manual of WJ-SX150/WJ-SX150A.
1. Test Equipments Required
The following Test Equipments are required for adjustment
of the Matrix Switcher WJ-SX155.
8
Underscanned Colour Video Monitor
8
Vectorscope
8
Video Signal Generator
Colour Bar Signal
Ramp Signal (without Carrier)
Raster Signal
8
Oscilloscope
8
Frequency Counter
8
Ceramic Screwdriver
8
Digital Voltmeter
8
Personal Computer
8
RS-232C Cross Cable
8
SX150 Test Tool
2. Disassembling Procedure for
Adjustment
8
Referring to Fig. 2-1, remove eleven screws that secure
the Upper Cover and remove the Upper Cover.
Fig. 2-1
3. Connection and Setting up for
Adjustment
3.1. Connection
8
Fig. 3-1 shows the connecting diagram for adjustment of
the WJ-SX155.
– 2-1 –
ADJUSTMENT PROCEDURE OF MULTIPLEXER BOARD
Fig 3-1
8
Connect the Underscanned Colour Video Monitor through
the Vectorscope to the Monitor Output Connector 1 or the
External Output Connector on the rear panel of the WJ-
SX155.
8
Terminate the input terminal of the Underscanned Colour
Video Monitor with 75
Ω
.
8
Connect the output terminal of the Video Signal Generator
to the Camera Input Connector 1-4 on the rear panel of
the WJ-SX155.
8
Connect the probe of the Digital Voltmeter, the
Oscilloscope or the Frequency Counter at the desired Test
Point in each adjustment step.
8
Connect the Serial port of the WJ-SX155 to the Serial port
of the PC with the RS-232C cross cable.
3.2. Setting Up
8
Turn off the power of the WJ-SX155.
8
Set SW4 on the Main Board of the WJ-SX155 as shown in
Fig. 3-2.
Fig 3-2
SERIAL
MONITOR OUT 1
or EXT OUT
or EXT OUT
WJ-SX155
Video
Signal
Generator
Signal
Generator
Underscanned
Colour Video Monitor
Colour Video Monitor
Personal
Computer
Computer
75
Ω
Vectorscope
CAMERA
1 – 4
Remove eleven screws.
Upper Cover
SW4 SETTING
1
2
3
4
5
6
7
8
2
3
4
5
6
7
8
O
N
N
1
2
3
4
5
6
7
8
2
3
4
5
6
7
8
ON
ON
OFF
OFF
ON
OFF
OFF
OFF
ON
OFF
OFF
ON
OFF
OFF
OFF
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