Power Up: DLP-518 363-205-401
Page 2 of 4 Issue 7, March 1997
2. Verify that each fuse holder on faceplate of
PRU
contains an 80G (0.5A) fuse
(red bead) and that fuses are not blown (fuse is blown when bead protrudes
from hole in faceplate). If a fuse is blown, use
WECO 553A
Extractor Tool
(Techni-Tool No. 594TE170) or
WECO 319B
(KS-6305) Extractor Tool
(Techni-Tool No. 490PL020) to remove it.
3. Is a
PRU
present in
PRU1
slot in bulk power shelf?
If
YES,
then proceed to Step
5.
If
NO,
then continue with Step
4.
4. Insert
AUG1 PRU
into
PRU1
slot in bulk power shelf and proceed to Step
6
.
5. Insert
AUG1 PRU
into
PRU2
slot in bulk power shelf.
6. Do any fuses on
PRU
blow?
If
YES,
then continue with Step
7.
If
NO,
then proceed to Step
12.
7. Replace blown fuse(s) on
PRU
using
WECO 553A
Extractor Tool (Techni-Tool
No. 594TE170) or
WECO 319B
(KS-6305) Extractor Tool (Techni-Tool No.
490PL020).
8. Do any fuses on
PRU
blow?
If
YES,
then continue with Step
9.
If
NO,
then proceed to Step
12.
9. Check wiring using SD-7C119-01.
10. Is wiring correct?
If
YES,
then get another
PRU
and proceed to Step
2.
If
NO,
then continue with Step
11.
11. Repair wiring and replace blown fuses in
PRU
.
12. Condition digital multimeter (DMM) to measure DC volts.
13. On
PRU
, connect DMM test leads to −
48
jack and
FR GND
jack.
14. Does DMM indicate between −42 and −56 volts?
If
YES,
then proceed to Step
16.
If
NO,
then continue with Step
15.
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