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CABINET (Cabinet Sensors)
Issue 4 May 2002
10-327
555-233-123
Replacement Procedures for AHD1 Fan Speed
Controller Circuit Packs and Fans
AHD1 Fan Speed Controller Circuit Pack
Replacement Procedure
NOTE:
The procedures in this section pertain only to non-variable speed (standard)
fans.
1. Refer to Chapter 5, “Routine Maintenance Procedures”, for details on
removing power from the system.
2. Remove the fan assembly cover by pulling the cover outward.
3. Loosen and remove the retaining screw nearest the power plug on the front
fan located to the extreme left.
4. Disconnect the power plug from the fan.
5. Loosen and remove the other retaining screw on the fan.
6. Remove the fan from the fan assembly.
!
CAUTION:
DO NOT TOUCH! Resistors on the circuit pack are hot.
7. Lift the latch on the AHD1 fan speed controller circuit pack.
8. Using the latch as a handle, pull the circuit pack up and out of its holder.
9. Insert a replacement AHD1 circuit pack, and push down on the latch until
the latch snaps in place.
10. Position the fan, and reconnect the fan power plug.
11. Insert and tighten the retaining screws.
12. Replace the fan assembly cover.
13. Refer to Chapter 5, “Routine Maintenance Procedures”, for details on
restoring power to the switch.
Summary of Contents for Definity SI
Page 1: ...0DLQWHQDQFH IRU YD D 1 7 6HUYHU 6 Volumes 1 2 and 3 555 233 123 Issue 4 May 2002...
Page 62: ...Maintenance Architecture 555 233 123 1 26 Issue 4 May 2002...
Page 92: ...Management Terminals 555 233 123 3 26 Issue 4 May 2002...
Page 204: ...Routine Maintenance Procedures 555 233 123 5 100 Issue 4 May 2002...
Page 250: ...LED Interpretation 555 233 123 7 10 Issue 4 May 2002...
Page 2804: ...Maintenance Object Repair Procedures 555 233 123 10 2018 Issue 4 May 2002...