Nortel Meridian 1 Hardware Replacement Manual page 50

Page 50 of 250 Replacing equipment
553-3001-520 Standard 17.00 January 2002
Procedure 1:
Replace the NT4N64, or the A0810496 Call Processor (CP PII)
card
1 Check that the Core containing the CP PII card to be replaced is
inactive:
a. The LCD/LED display panel across the top of the Core/Net
module core cards has two rows of LEDs.
If either of the LEDs (top = red or bottom = green) is on for any of
the cards, that side is in a test or idle state.
b. If the Core containing the CP PII card is active, switch cores in LD
135:
LD 135
SCPU
2 In LD 135, split the CPU Cores:
SPLIT
3 Remove all cables connected to the CPU being replaced.
4 Use a small-bladed screwdriver to remove the screws from the CP PII
card.
5 To remove the card, hold the card by the faceplate latches and gently
pull it out of the slot.
6 To install the replacement card, hold the card by the faceplate latches
and gently push it into the slot until the connectors make contact with
the backplane.
7 Gently push the latches forward to set the card and lock it in place.
CAUTION
Damage to Equipment
Never force the card into the slot. It the card gets
stuck, remove it and try again.
8 Use a small-bladed screwdriver to replace the screws on the card.
9 Replace all cables on the replaced CP PII card.
To load the program.
Switch.Core (if necessary).