Nortel Meridian 1 Replacement Manual page 85

2 If you need to switch CPUs:
LD 135 to load the program
STAT CPU to verify CPU status
SCPU to switch CPUs (if necessary)
**** to exit
3 Check the clock status:
LD 60
SSCK x (x= 0 or 1)
The associated clock must be in STANDBY. If you need to switch
clocks:
SWCK (if needed)
Note: Even numbered IGS cards are associated with clock 0. Odd
numbered IGS cards are associated with clock 1.
4 Software disable the IGS card:
LD 39
DISI IGS xx ("xx" refers to IGS card number 0-19)
ISR043 appears on the system terminal when the card is disabled. Busy
channels will not be disabled until the call is disconnected.
5 Software disable the second IGS card:
DISI IGS xx ("xx" refers to IGS card number 0-19)
ISR043 appears on the system terminal when the card is disabled. Busy
channels will not be disabled until the call is disconnected.
6 Faceplate disable the IGS cards.
To avoid interrupting service, set ENB/DIS switches to DIS before
disconnecting or connecting cables.
Replacing equipment
CAUTION
Page 85 of 362
Hardware replacement