MAINTENANCE
PREVENTIVE MAINTENANCE PROCEDURES
I-E96-506B1 6 - 5
Checking Power Module Outputs
To check modular power supply outputs on IEPEP01 and
IEPEP02 power entry panel systems, check the bus voltages on
the system power bus bar. There are test jacks on the bus
monitor module for checking bus voltages on IEPEP03 power
entry panel systems. Appendix C contains complete modular
power system wiring diagrams.
CHECKING BUS VOLTAGES ON IEPEP01 AND IEPEP02
SYSTEMS
1. Verify all power module status LEDs are green.
2. If any of the status LEDs are not green, refer to Section 5 to
troubleshoot and correct the problem before proceeding.
3. Measure the bus voltages at the system power bus bar.
Appendix C shows wiring diagrams of the IEPEP01 and
IEPEP02 power entry panels and bus bars. This test should be
done with the system loaded.
4. Use a digital voltmeter to measure +5, +15, and -15 VDC
with respect to DC common.
5. Measure 24 VDC with respect to I/O common using a digi-
tal voltmeter.
6. The measured voltages should be within the specifications
under module voltage requirements in Table 1-4.
7. If the module bus voltages are not within specification, ver-
ify that the system is properly sized. Refer to Appendix B for
the power system sizing procedure.
CHECKING BUS VOLTAGES ON IEPEP03 SYSTEMS
1. Verify all power module status LEDs are green.
2. If any of the status LEDs are not green, refer to Section 5 to
troubleshoot and correct the problem before proceeding.
3. Measure the bus voltages at the test jacks on the bus mon-
itor module. This test should be done with the system loaded.
4. Use a digital voltmeter to measure +5, +15, and -15 VDC
with respect to DC common.
5. Measure 24 VDC with respect to I/O common using a digi-
tal voltmeter.
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