REMOVE COVER BY UNSCREWING AND REMOVING 11 SCREWS
THAT MOUNT COVER TO CHASSIS AND FRONT PANEL.
REMOVE 4 SETS OF HARDWARE THAT HOLD THE LEXAN COVER
TO THE HIGH VOLTAGE BOARD, AND REMOVE COVER.
CHANGE POSITION OF JP4 JUMPERS ON FRONT PANEL BOARD
TO MATCH POLARITY OF UNIT, i.e 2 JUMPERS MUST BE ON "N"
POSITIONS FOR NEGATIVE UNITS AND ON "P" POSITIONS FOR
POSITIVE UNITS.
TURN UNIT OFF, UNPLUG LINE CORD FROM AC OUTLET AND
WAIT FOR 5 MINUTES BEFORE PROCEEDING TO CHANGE THE
POLARITY OF UNIT.
1
4
2
REINSTALL LEXAN COVER AND RELATED HARDWARE.
REINSTALL POWER SUPPLY'S COVER AND ALL HARDWARE BEFORE
5
3
HIGH VOLTAGE BOARD
PARTIAL VIEW A-A
6
3
FOR POSITIVE POLARITY:
BLACK WIRE ON J4 AND WHITE WIRE ON J5.
FOR NEGATIVE POLARITY:
WHITE WIRE ON J4 AND BLACK WIRE ON J5.
SWAP BLACK AND WHITE WIRES BETWEEN J4 AND J5 AS FOLLOWS:
4
TURNING UNIT ON.
POSITIVE CONFIGURATION
SHOWN
10W to 300W, 1kV to 8kV Chassis
Figure 5.3-Polarity Reversal Procedure
1kV-8kV chassis
10-300 Watt
A
A
NOTE: JP4 NOT USED ON
SUPPLIES EQUIPPED WITH BFP OPTION
POLARITY
POSITIVE
NEGATIVE
SW1-1
CLOSED
OPEN
SW1 AND SW2 SWITCH SETTINGS
TABLE 1
SET SW1 AND SW2 DIP SWITCHES ACCORDING TO TABLE 1
6
7
5
SW1-2
CLOSED
OPEN
SW1-3
CLOSED
OPEN
SW1-4
CLOSED
OPEN
SW1-5
CLOSED
OPEN
SW1-6
CLOSED
OPEN
SW2-1
CLOSED
OPEN
SW2-2 SW2-3 SW2-4 SW2-5 SW2-6
CLOSED
OPEN
CLOSED
OPEN
CLOSED
OPEN
CLOSED
OPEN
CLOSED
OPEN
NOTE: POWER SUPPLIES THAT UTILIZE CONTROL BOARD
P/N 450050-XXX DO NOT REQUIRE STEP 5.
MULTIPLIER
HIGH VOLTAGE
JB1
PARTIAL VIEW A-A
POSITIVE CONFIGURATION
SHOWN
8
POSITIONS FOR NEGATIVE UNITS AND ON "P" POSITIONS FOR
TO MATCH POLARITY OF UNIT, i.e 2 JUMPERS MUST BE ON "N"
CHANGE POSITION OF JP4 JUMPERS ON FRONT PANEL BOARD
POSITIVE UNITS.
8
WAIT FOR 5 MINUTES BEFORE PROCEEDING TO CHANGE THE
TURN UNIT OFF, UNPLUG LINE CORD FROM AC OUTLET AND
REMOVE COVER BY UNSCREWING AND REMOVING 11 SCREWS
THAT MOUNT COVER TO CHASSIS AND FRONT PANEL.
POLARITY OF UNIT.
1
UNPLUG HIGH VOLTAGE LEADS FROM ASSEMBLY.
UNPLUG CABLE FROM JB1 AND REMOVE CABLE SHIELD
REMOVE 2 SCREWS THAT HOLD THE POLYETHYLENE ENCLOSURE
AND 2 SCREWS THAT MOUNT THE BOARD TO THE CHASSIS
CAREFULLY TILT UP AND SLIDE OUT MULTIPLIER.
INSTALL NEW MULTIPLIER BY FOLLOWING STEPS 6 THRU 2 IN
INSTALL COVER AND ALL HARDWARE BACK BEFORE TURNING
UNPLUG CONNECTOR FROM JB2.
FROM FASTON TAB ON BOARD.
REVERSE.
UNIT ON.
Figure 5.4-Polarity Reversal Procedure
10W to 300W, 10kV to 130kV Chassis
10-300 Watt
10kV-130kV chassis
JB2
2
3
4
5
6
7
9
3
5
4
2
5
6
A
A
NOTE: JP4 NOT USED ON
SUPPLIES EQUIPPED WITH BFP OPTION
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