NEC SV8500, Operation And Maintenance Manual

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CHAPTER 5 Operation Procedure for System with PIR
1.6 Replacement Procedure of PWR (Power) Circuit Card
This section explains the replacement procedure of the PWR circuit card. DC-DC PWR
and DC-DC DPWR circuit cards are mounted on Slot 01 and 03 of the PIR, supplying
the power to the circuit cards mounted on the PIR. Replacement procedure of each PWR
circuit card is shown below.
Note: When the PWR is not provided in dual configuration, the corresponding PIR cannot
be used during PWR replacement.
[Start]
STEP 1 Turn ON (upward) MB key on the PWR and DPWR (DC-DC) circuit card to be replaced.
• OPE lamp on the card goes off.
STEP 2 Turn OFF (downward) the -48V switch of the circuit card to be replaced.
STEP 3 Disconnect the power cable of the -48V connector.
STEP 4 Pull out the circuit card mounted on the slot.
STEP 5 Turn ON (upward) MB key on the new PWR/DPWR circuit card.
STEP 6 Insert new circuit card into the PIR.
• OPE lamp of the new circuit card remains off.
STEP 7 Connect the power cable to the -48V connector.
STEP 8 Turn ON (upward) the -48V switch of the new circuit card.
STEP 9 Turn OFF (downward) MB key on the new circuit card.
• OPE lamp on the new circuit card lights green.
[End]
ATTENTION
Contents
Static Sensitive
Handling
Precautions Required