363-205-401 Power Up:
Issue 7, March 1997 Page 1 of 4
DLP-511
Install and Test Power Converter Unit (PCU) in
Facility Shelf
SUMMARY:
Install
PCU
in facility shelf and verify that
FAIL
indicator goes off and
remains off. Measure −42 to −56 V DC at
PCU
faceplate.
1. Get one
AUA11( ) PCU
and inspect for possible damage.
2. Insert
PCU
into
PCU
slot in facility (middle) shelf.
3.
NOTE:
FAIL
indicator on
PCU
may light momentarily when inserted into RT.
Does
FAIL
indicator on
PCU
go off and remain off?
If
YES,
then proceed to Step
8.
If
NO,
then continue with Step
4.
4. Replace
PCU
.
5.
NOTE:
FAIL
indicator on
PCU
may light momentarily when inserted into RT.
Does
FAIL
indicator on
PCU
go off and remain off?
If
YES,
then proceed to Step
8.
If
NO,
then continue with Step
6.
6. Replace
PCU
with
PCU
removed previously.
7. Use SD-7C117-01 or SD-7C117-02 to check bank wiring. Repeat procedure
from Step
3
after locating and correcting trouble.
8. Condition DMM to measure volts DC.
9. On
PCU
, connect DMM test leads to
GND
jack and −
48
jack.
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