Lexmark T63 Series, Service Manual

Page: 133 / 345

Diagnostic aids
3-5
4060- xxx
Duplex Motor Test
This test lets you test the duplex option paper feed drive system, and verify that the power and
velocity values are acceptable.
To run the Duplex Motor Test:
1.
Select Motor Test from the Duplex Tests menu. The duplex motor test continues to run until the
printer is powered off.
•
The power indicator blinks while the test is running.
•
The duplex option runs the motor at a high speed and then a low speed and takes an
average of the power required for each speed.
•
After all the information is computed, the motor turns off.
DUPLEX MOTOR AA BB CC DD EE FF
appears on the printer display.
To pass the test the following results must display:
AA = 00
BB = in the range of 20 through 3F inclusively (hex)
CC = in the range of 3A through 5D inclusively (hex)
DD = 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)
2.
Press Return/Stop to exit the test.
Duplex Feed 1 Test
This test feeds a blank sheet of paper to the duplex paper stop position 1.
To run the Duplex Feed 1 Test:
Select Duplex Feed 1 from the Duplex Test menu.
•
The power indicator blinks while the paper is feeding.
•
“Duplex Feed 1/Feeding” message displays while the paper is feeding through the printer.
•
“Duplex Feed 1/Clear Paper” message displays when the paper reaches paper stop position 1
and the power indicator turns on solid.