4026-0XX

Exit Sensor Service Check

 

FRU

Action

 

 

 

 

1

Engine Board

Disconnect the exit sensor cable from the

 

 

engine board. Check for +4.5 V dc to +5.5 V dc

 

 

at CN8-1. If incorrect, replace the engine board.

 

 

 

 

2

Exit Sensor

Be sure the exit sensor is snapped in place and

 

 

the cable is firmly connected.

 

 

 

 

3

Exit Sensor

Check the flag for damage and free movement

 

Flag

and replace as necessary. Be sure the exit sen-

 

 

sor spring is properly installed and not discon-

 

 

nected, damaged, or missing.

 

 

Reconnect the exit sensor cable and check the

 

 

voltage at CN8-3 on the engine board as you

 

 

press the exit sensor flag. The voltage should

 

 

change as the flag is moved in and out of the

 

 

sensor. If incorrect, replace the exit sensor.

 

 

 

 

4

Exit Sensor

Check the continuity of the cable. If incorrect,

 

Cable

replace the exit sensor cable.

 

 

 

 

Fan Service Check

 

 

 

 

 

 

 

FRU

Action

 

 

 

 

 

1

Engine Board

Turn the printer power off. Disconnect CN11

 

 

 

on the engine board. Turn the printer on and

 

 

 

measure the voltage between CN11-1 and

 

 

 

CN11-2. The voltage should read approxi-

 

 

 

mately +24 V dc. If incorrect, replace the

 

 

 

engine board.

 

 

 

If correct, turn the printer off and connect

 

 

 

CN11. Monitor the voltage between ground

 

 

 

and CN11-1 (FAN*) immediately as you power

 

 

 

on the printer. The voltage should go from +24

 

 

 

V dc with the fan motor off to approximately 0

 

 

 

V dc when the motor turns on. If incorrect,

 

 

 

replace the fan motor and cable assembly.

 

 

 

 

 

2

Fan Motor/

Be sure the fan is properly installed if the fan

 

 

Cable

is noisy. If correct, replace the fan motor

 

 

 

assembly.

 

 

 

 

 

Diagnostic Information 2-17

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Lexmark 4026-0XX manual Exit Sensor Service Check, Fan Service Check

4026-0XX specifications

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