Power Up: DLP-531
363-205-401
Page 2 of 2
Issue 7, March 1997
8.
Do all fans operate while FAN TEST button is pressed?
If YES, then STOP. YOU HAVE COMPLETED THIS PROCEDURE.
If NO, then continue with Step 9.
9.
Does
−
48V FAN H or
−
48V FAN L fuse on BFU blow again?
If YES, then continue with Step 10.
If NO, then proceed to Step 11.
10. Check wiring using SD-7C118-02 and SD-7C150-01. Repeat procedure from
Step 3 after locating and correcting trouble.
11. Replace A/FCU.
12. Press FAN TEST button on A/FCU.
Response:
All fans should operate while button is pressed.
13. Do all fans operate while FAN TEST button is pressed?
If YES, then STOP. YOU HAVE COMPLETED THIS PROCEDURE.
If NO, then continue with Step 14.
14. Replace A/FCU with A/FCU removed previously.
15. Is FAN ALARM indicator on fan shelf lighted?
If YES, then continue with Step 16.
If NO, then proceed to Step 17.
16. Replace fan shelf and repeat from Step 3.
17. Check wiring to fan shelf per SD-7C118-02 and SD-7C150-01. Repeat proce-
dure from Step 3 after locating and correcting trouble.