Northern Telecom BCS35 Replacement Manual page 56

40 Error Control II and Error Control II Jumper circuit packs
Procedure 5–2
Replacing Error control II Jumper circuit pack
Step
1
2
3
4
5
297-1001-536 Standard 01.03 August 1996
CAUTION
Since all DPP circuit packs are static sensitive, observe
all precautionary measures.
CAUTION
Wear a wrist grounding strap when working with the
DPP. Jacks at the lower right of the Rover Interface
panel (B chassis) and the lower right of the Switch and
Status Panel (A chassis) are provided to accept the
banana plug connection on the end of the grounding
strap.
Description
Make sure the DPP is in A ONLY
processor mode.
Remove power from the B chassis by
pressing the red rocker switch to 0.
Replace the Error Control II Jumper
circuit pack in the B chassis.
Return power to the B chassis using
the rocker switch on the power supply.
Key to AP processor mode.
Notes
Press A/B to A.
Press O/P to O.
Turn mode insert key and release.
Slot 5.
Wait for power–up activity to end and
the message "S/W Loaded" to print.
Press O/P to P and key.
(continued)