Page 28 of 34 Equipment replacement
553-2601-500A
Standard 2.0
December 1994
Procedure 14
QPC706 Power Converter Circuit Pack replacement
1
See 553-2301-511 and load overlay 32 and disable loops on shelf
containing the QPC706 converter.
2
Set the ENB/DIS switch on the QPC659 circuit pack on the PE shelf
containing the QPC706 converter to DIS.
3
Set the PE breaker corresponding to the PE shelf on the QUX20 unit
to OFF (
).
4
Remove the QPC706 converter and install replacement.
5
Set the corresponding PE breaker on the QUX20 unit to ON.
6
Set the ENB/DIS switch on the QPC659 circuit pack on the PE shelf
to ENB.
7
Using overlay program 32, enable loops previously disabled.
CAUTION
The appropriate breaker must be OFF before attempting to replace a
QPC706 converter pack. See
for breaker assignments.
