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DEFINITY Enterprise Communications Server Release 6
Maintenance for R6vs/si
555-230-127
Issue 1
August 1997
Routine Maintenance Procedures
Page 5-9Troubleshooting Control Cabinet Power Units
5
NOTE:
When powering up, the DEFINITY ADUXI System automatically
reboots. This sequence may show an MD or MJ ADX alarm in the
display until the system how powered up. When the system has
completed its power up sequence, the display reads: ADX.
Troubleshooting Control Cabinet
Power Units
1. Check that the translation card is in the TN777B circuit pack and enter the
save translation command.
2. On the Processor circuit pack in the PPN, set the EMER XFER (Emergency
Transfer) switch to ON. This locks the system in the Transfer Mode until
the trouble is cleared.
!
WARNING:
Electrostatic discharge can destroy or severely damage integrated
circuits or circuit packs. Always wear the electrostatic discharge
(ESD) wrist grounding strap when handling circuit packs. Connect
the wrist strap to one of the metal tabs located on the lower left or
right side of one of the carriers.
3. Unlatch the locking lever and unseat the power unit.
4. Unseat all the
control
circuit packs.
5. Reseat the power unit. If the yellow LED on the suspect power unit lights
immediately, the control circuit packs can be presumed to be healthy. If
the yellow LED on the suspect power unit does not light immediately,
continue with the next step.
6. Reseat the circuit packs one at a time while observing the LED on the
power unit.
a. If the yellow LED on the power unit lights when a specific circuit
pack is reseated, unseat and reseat the same circuit pack again to
rule out a transient problem. If the yellow LED lights again, the
problem is with the circuit pack, and the power unit is functioning
properly. Replace the defective circuit pack.
b. If the yellow LED on the suspect power unit does not light during
the reseating of the control circuit packs, continue with the next
step.
7. Unseat all
port
circuit packs.
8. Reseat the port circuit packs one at a time following the same steps
outlined above for control circuit packs.
9. If none of the control or port circuit packs appears to be defective, replace
the power unit.