Lexmark X850E - LVPS Cooling Fan Failure; Sensor (Exit 1 Media Shift HP) Failure

2-158 MFP Service Manual
7500-XXX
917.00 LVPS cooling fan failure
918.00 Sensor (exit 1 media shift HP) failure
Step Check Yes No
1 Check the LVPS cooling fan for proper installation.
Is the LVPS cooling fan installed properly?
Go to step 2. Install the LVPS
cooling fan
properly.
2 Visually check the LVPS cooling fan for rotation.
Is the LVPS cooling fan visually rotating?
Go to step 3. Go to step 4.
3 Check the LVPS cooling fan connection.
Is the LVPS cooling fan connected properly?
Replace the LVPS
cooling fan.
Go to “LVPS
cooling fan
removal” on
page 4-121.
Replace the
connection.
4 Perform a print test.
Does the error remains?
Replace the LVPS
card assembly.
Go to “LVPS card
assembly
removal” on
page 4-119.
Problem solved.
Step Check Yes No
1 Check the sensor (exit 1 media shift HP) for operation.
1. Enter the Diagnostics Menu.
2. Touch BASE SENSOR TEST.
3. Touch Media Path.
4. Touch Exit1 shift HP.
Move the shift assembly, with your finger, in a side to side
motion.
Does the display, on the operator panel, change every time
the sensing area is blocked?
Go to step 3. Go to step 2.
2 Check the sensor (exit 1 media shift HP) for connection.
Is the sensor (exit 1 media shift HP) connected?
Replace the
sensor (exit 1
media shift HP).
Go to “Exit 1
media shift
assembly
removal” on
page 4-105.
Replace the
connection.
3 Check the media shift motor for operation.
1. Enter the Diagnostics Menu.
2. Touch MOTOR TESTS.
3. Touch Printer Motor Test.
4. Touch Exit1 shift motor.
Note: A continuous operation check is allowed up to twice
for each direction.
Does the motor operate normally?
Go to step 5. Go to step 4.