4–14 Component Test Procedures
Publication 1336 IMPACT-6.2 – March 1998
Figure 4.6
Precharge Board Test
Precharge
Board
Fuses F1, F2,
and F3
AB0342A
!
ATTENTION: Disconnect and lock out power from
the drive before disassembling the drive. Failure to
disconnect power may result in death or serious injury.
Verify bus voltage by measuring the voltage between
+DC and –DC on terminal block TB1. Do not attempt
to service the drive until the bus voltage has discharged
to zero volts.
Test 6 – Testing the
Precharge Board
AB Spares
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