Read Panasonic WJ-SX155 Service Manual Simplified online
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8
Adjust L2001 to obtain 2.5 V ± 0.3 V DC.
8
Change the connection of the Video Signal Generator
from the Camera Input Connector 2 to 3.
8
Connect the Digital Voltmeter to TP2002.
8
Turn L2002 to fully clockwise direction.
8
Adjust L2002 to obtain 2.5 V ± 0.3 V DC.
8
Change the connection of the Video Signal Generator
from the Camera Input Connector 3 to 4.
8
Connect the Digital Voltmeter to TP2003.
8
Turn L2003 to fully clockwise direction.
8
Adjust L2003 to obtain 2.5 V ± 0.3 V DC.
(3). G/L PLL DC Level Adjustment (Rec Out)
Test Point:
TP2200 (REC G/L PLL DC-1)
TP2201 (REC G/L PLL DC-2)
TP2202 (REC G/L PLL DC-3)
TP2203 (REC G/L PLL DC-4)
Multiplexer Board
Adjust:
L2200 (REC G/L PLL DC-1)
L2201 (REC G/L PLL DC-2)
L2202 (REC G/L PLL DC-3)
L2203 (REC G/L PLL DC-4)
Multiplexer Board
8
Change the connection of the Video Signal Generator
from the Camera Input Connector 4 to 1.
8
Connect the Digital Voltmeter to TP2200.
8
Turn L2200 to fully clockwise direction.
8
Adjust L2200 to obtain 2.5 V ± 0.3 V DC.
8
Connect the Digital Voltmeter to TP2201.
8
Turn L2201 to fully clockwise direction.
8
Adjust L2201 to obtain 2.5 V ± 0.3 V DC.
8
Connect the Digital Voltmeter to TP2202.
8
Turn L2202 to fully clockwise direction.
8
Adjust L2202 to obtain 2.5 V ± 0.3 V DC.
8
Connect the Digital Voltmeter to TP2203.
8
Turn L2203 to fully clockwise direction.
8
Adjust L2203 to obtain 2.5 V ± 0.3 V DC.
(4). Monitor Out Level Adjustment
Test Point:
Monitor Output Connector 1
Rear Panel
Adjust:
VR2000 (MONI BURST)
Multiplexer Board
VR2001 (MONI ID)
Multiplexer Board
8
Disconnect all input signals.
8
Connect the terminated Oscilloscope with 75
Ω
to the
Monitor Output Connector 1 on the rear panel.
8
Trigger the Oscilloscope with H rate.
8
Set the Mode Selector on the front panel of the WJ-SX155
as shown in Fig. 3-3.
Fig 3-3
8
Disconnect the flexible flat cable from CN76 on the Rear
Board of the WJ-SX155.
8
Turn on the power of the WJ-SX155, then the WJ-SX155
will start in the Adjustment Mode.
4. Adjustment Procedure
8
Refer to the Location of the Test Points and Adjusting
Controls on the page 2-8.
8
These adjustment should be done in numerical order.
(1). 13.5MHz Frequency Adjustment
Test Point:
TP2207 (13.5MHz)
Multiplexer Board
Adjust:
CT2200 (13.5MHz)
Multiplexer Board
8
Disconnect all input signals.
8
Connect the Frequency Counter to TP2207 and TP1306
(GND).
8
Adjust CT2200 to obtain 13.500 000 MHz ± 18 Hz.
(2). G/L PLL DC Level Adjustment (Monitor Out)
Test Point:
TP2000 (MONI G/L PLL DC-1)
TP2001 (MONI G/L PLL DC-2)
TP2002 (MONI G/L PLL DC-3)
TP2003 (MONI G/L PLL DC-4)
Multiplexer Board
Adjust:
L2000 (MONI G/L PLL DC-1)
L2001 (MONI G/L PLL DC-2)
L2002 (MONI G/L PLL DC-3)
L2003 (MONI G/L PLL DC-4)
Multiplexer Board
8
Supply the Ramp signal to the Camera Input Connector 1
on the rear panel.
8
Connect the Digital Voltmeter to TP2000.
8
Turn L2000 to fully clockwise direction.
8
Adjust L2000 to obtain 2.0 V ± 0.3 V DC.
8
Change the connection of the Video Signal Generator
from the Camera Input Connector 1 to 2.
8
Connect the Digital Voltmeter to TP2001.
8
Turn L2001 to fully clockwise direction.
1
2
3
4
OFF
OFF
OFF
OFF
MODE SELECTOR SETTING
ON
1
2
3
4
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