Power Supply Control And Display Assembly - HP 3000 III Series Manual

HP 32435A Series III Power Supplies
If the PON indicator does not light, one or more of the DC volt-
ages has failed and the DC VOLTAGES indicator (s) that is lighted
indicates the DC voltage that has failed. (Use table 10-1 to de-
termine the power supply source.) If this occurs, all power sup-
plies except memory backup are shut down and their supply vol t-
ages are not available at the DC VOLTAGES test points.
If one or mor e of the DC vol tages fa il dur ing normal system cper-
ation, the PON indicator will no longer be lighted and the faulty
DC voltage(s) will be indicated by the lighted DC VOLTAGES indi-
cator(s). The PFW indicator will remain lighted.
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• • • • • • • • • • •
+15 +12B +5 CPU +5B +5-V1 +5-V2 +5-V3 TEMP -58 -5 -15 GND
e=====::J
DCVOLTAGES
~
_
•••
BCHG PFW PON
DC STATUS
LOGIC
ENABLE.
DISABLE
MEMORY
ENABLE.
DISABLE
DC POWER
C)
Figure 10-1. Power Supply Control and Display Assembly
10- 1.