
5-33Controller Cards
Original — December 1991 UM4.6:CS6003
Step 4: Press the calibrator RESET switch. The IN PROGRESS
indicator lights and remains lit until the card self-test is
finished. When finished, the COMPLETE indicator lights. If
the COMPLETE indicator fails to light within one minute, the
service transfer card requires repair.
Step 5: Press the CAL LOW switch.
Step 6: Connect the voltmeter between test points TP5 and TP3 on
the service transfer card. The voltmeter should read 4.000
± 0.0005 volts dc. If not, adjust the service transfer card DAC
1 REF (R43) potentiometer to obtain the proper reading.
Step 7: Connect the 400 ohm resistor between breakout terminals
+CO1 and –CO1.
Step 8: Connect the voltmeter between test points TP1 and TP3 on
the service transfer card. The voltmeter should read 8.000
± 0.0005 volts dc. If not, adjust the service transfer card DAC
2 SPAN (R37) potentiometer to obtain the proper reading.
Step 9: Connect the voltmeter between test points TP1 and TP2 on
the service transfer card. The voltmeter should read 2.000
± 0.0005 volts dc. If not adjust the service transfer card
CURRENT SENSE (R5) potentiometer to obtain the proper
reading.
Step 10: Connect the voltmeter between test points TP3 and TP4 on
the service transfer card. The voltmeter should read 0.176
± 0.0002 volts dc. If not, adjust the service transfer card REF
ADJ–14% (R30) potentiometer to obtain the proper reading.
Step 11: Disconnect the voltmeter and remove the 400 ohm resistor.
Step 12: Set the calibrator ON/OFF switch to OFF.
Step 13: Remove the service transfer card.
5.10.3 Functional Test
Step 1: Verify that the calibrator ON/OFF switch is OFF.
Step 2: Insert the service transfer card in the test slot labeled
CONFIG SVCE XFER IND.
Step 3: Insert the service transfer display station in the operator
station case.
Step 4: Connect the service transfer cable between the service
transfer display station and the connector on the front of the
service transfer card.
Step 5: Set the calibrator ON/OFF switch to ON.
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