Dell 5110cn Service Manual page 227

Motor, Clutch and Solenoid
name (Diag. Code)
Front Fan Motor (High)
(DO-45)
Front Fan Motor (Low)
(DO-46)
NOTE: The following procedures are for the technical staff. The
customer check is procedures 1, 4 and 5.
1) Turn on the power and enter the Diagnostic Mode.
2) Push the Side Button to open the Front Cover.
3) Cheat the safety Interlock System.
4) Execute the DO-45 or DO-46. Put the hand into inside of the
Front Cover, and confirm the air blows from the Front Fan.
(The customer can confirm the motor noise only.)
The rotational speed of the Front Fan Motor is as follows.
DO-46 (slow speed) < DO-45 (high speed)
2)-2
5) Press the "CANCEL" key to stop the test.
6) Remove the cheater.
7) Close the Front Cover.
2 - 49
Chapter 2 Operation of Diag.
Confirmation procedures
Front Fan Motor
2)-1
Ida_Sec02_040FA