Dell 5210n Mono Laser Printer, Service Manual

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Diagnostic aids
3-11
Motor Test (duplex)
This test lets you test the duplex option paper feed drive system, and verify that the power and velocity values
are acceptable. The duplex runs the DC motor at high speed and low speed, taking an average of the power
(PWM) required for each speed and calculating the KE value.
To run the Motor Test (duplex):
1.
Select
Motor Test
from DUPLEX TESTS.
The power indicator light
blinks,
and the message Motor Test Testing displays.
2.
When the motor stops, the results are displayed.
•
AA—00 indicates success, and any other value indicates failure.
•
BB—average PWM for the high speed portion of the test. The results should be in the range of 20
through 3F inclusively (hex)
•
CC—average PWM for the low speed portion of the test The results should be in the range of 3A
through 5D inclusively (hex)
•
DD—
minimum PWM for the low speed portion of the test. The results should be in the range of 11
through 1F inclusively (hex)
•
Ignore bytes
EE
and
FF
.
If the test fails, remove the drive belt from the duplex DC motor, and run the motor test again. For the duplex DC
motor to pass the test, the following results must display:
•
AA = 00
•
BB = in the range of 29 through 3E inclusively (hex)
•
CC = in the range of 35 through 51 inclusively (hex)
•
DD = in the range of 0C through 13 inclusively (hex)
For the duplex drive system to pass the test, the following results must display:
•
AA = 00
•
BB = in the range of 29 through 3F inclusively (hex)
•
CC = in the range of 3A through 5D inclusively (hex)
•
DD = in the range of 11 through 1F inclusively (hex)
3.
Press
Back
( ) o r
Stop
( ) to exit the test.
DUPLEX MOTOR
AA BB CC DD EE FF