64 Service Manual (AA-RS2ED-TE, July 2004)

Diagnostics

112 Director 2/64 Service Manual

Inspect both fan modules at the rear of the director. Fan module LEDs can be

inspected through the hexagonal cooling vents of the radio frequency interference

(RFI) shield.

Does inspection of a director fan module indicate a failure? Indicators include:

■ The amber LED is illuminated but not blinking (beaconing) on one or both fan

modules.

■ One or more cooling fans are not rotating.

YES NO

↓ Go to step 6.

One or more cooling fans failed, and one or both fan modules must be removed

and replaced (“RRP: Redundant Fan Module” on page 252).

■ If one or more fans in a module are operating, do not remove the fan module

unless the replacement is immediately available.

■ If a multiple fan failure caused a thermal shutdown, power on the director

after the fan modules are replaced (“Power-On Procedure” on page 200).

Note: Do not remove a fan module unless the replacement module is available.

Operation of the director with only one fan module for an extended period may cause

one or more thermal sensors to post event codes.

Are the fan modules functioning?

NO YES

↓ The director is operational. Exit MAP.

Contact the next level of support. Exit MAP.