Lexmark X 850 Owners Manual

Diagnostic information2-33
7500-XXX
950.30 
through 
950.60
Service 
NVRAM 
mismatchEPROM mismatch failure This error code indicates a mismatch between the 
RIP card assembly and the interconnect card 
assembly.
Warning: In the event of replacement of any one of 
the following components:
• Operator panel assembly (universal)
• Operator panel controller card assembly
• RIP card assembly
• Interconnect card assembly
Only replace one component at a time. Replace the 
required component, and perform a POR...

2-34MFP Service Manual 7500-XXX
956.01
Service 
system boardRIP card assembly processor 
over temperature failureThe RIP card assembly has exceeded safe 
operating temperature.
Go to “956.01 RIP card assembly processor over 
temperature failure” on page 2-176.
956.02
Service 
system boardRIP card assembly cooling 
fan failureThe RIP card assembly cooling fan is not 
functioning properly.
Go to “956.02 RIP card assembly cooling fan 
failure” on page 2-176.
956.03
Service 
system boardRIP card assembly...

Diagnostic information2-35
7500-XXX
981.02
Service 
finisher errorStacker bin lower limit failure The stacker bin abnormally lowers beyond the 
specified lower limit position (full stack).
Refer to the Options Service Manual.
982.00
Service 
finisher errorSensor (front tamper HP) on 
failureThe sensor (front tamper HP) is not turned on after 
the front tamper starts moving to the front tamper 
home position.
Refer to the Options Service Manual.
982.01
Service 
finisher errorSensor (front tamper HP) off...

2-36MFP Service Manual 7500-XXX
986.00
Service 
finisher errorSensor (eject clamp HP) on 
failureThe sensor (eject clamp HP) is not turned on within 
500 ms after the eject clamp up starts.
Refer to the Options Service Manual.
986.01
Service 
finisher errorSensor (eject clamp HP) off 
failureThe sensor (eject clamp HP) is not turned off within 
200 ms after the eject clamp down starts.
Refer to the Options Service Manual.
987.00
Service 
finisher errorSensor (media eject shaft 
HP) on failureThe sensor...

Diagnostic information2-37
7500-XXX
995.00
Service 
finisher NVFinisher NVM R/W failure A read/write error occurred on the NVM of the 
finisher controller card assembly.
Refer to the Options Service Manual.
996.00
Service wrong 
finisher Finisher type failure An incorrect type of finisher is connected.
Refer to the Options Service Manual.
997.00
Service wrong 
duplexDuplex controller card 
assembly type failureA duplex controller card assembly of a different 
specification is installed.
Go to “997.00...

2-38MFP Service Manual 7500-XXX
Close door D Duplex left door open The duplex left cover is open.
Go to “Duplex left door assembly open” on 
page 2-181.
Close door E Exit 2 left door open The exit 2 left door is open.
Go to “Exit 2 left door assembly open” on 
page 2-181.
Close door G Finisher front door open. The finisher front door is open.
Refer to the Options Service Manual.
Close door J Printer front door open. The printer front door assembly is open.
Go to “Printer front door open” on page 2-188....

Diagnostic information2-39
7500-XXX
Remove 
paper from 
standard 
output binStandard bin 2 full. Media in standard bin 2 is at maximum capacity.
Go to “Standard bin 2 full” on page 2-191.
Scanner ADF 
cover openSwitch (ADF left cover 
interlock) openThe system detected that the switch (ADF left cover 
interlock) is open.
Go to “Switch (ADF left cover interlock) open” 
on page 2-193.
Scanner 
missing - 
cable 
unpluggedScanner missing failure The scanner unit assembly is unplugged or missing.
Go to...

2-40MFP Service Manual 7500-XXX
Service checks 
200.00 Sensor (registration) off jam (too long) 
Step Check Yes No
1 Check the media position.
Open the printer left door assembly and visually check it.
Does the media touch the sensor (registration)?Remove the 
media.Go to step 2.
2 Check the roll.
Open the printer left door assembly and check it.
Is the transport roll assembly free of excess wear and 
contamination?Go to step 3. Clean or replace 
the transport roll 
assembly.
Go to “Transfer 
roll...

Diagnostic information2-41
7500-XXX
200.01 Sensor (registration) static on jam 
Step Check Yes No
1 Check the media position.
Open the printer left door assembly and visually check it.
Does the media touch the sensor (registration)?Remove the 
media.Go to step 2.
2 Check the sensor (registration) for proper operation.
1. Enter the Diagnostics Menu.
2. Touch BASE SENSOR TEST.
3. Touch Media Path.
4. Touch Registration. 
Open the printer left door assembly and check it.
Does the display, on the operator...

2-42MFP Service Manual 7500-XXX
201.00 Sensor (fuser exit) on jam 
Step Check Yes No
1 Check the media position.
Does the media touch the sensor (fuser exit)?
Open the printer left door assembly and visually check it.Remove the 
media.Go to step 2.
2 Check the fuser exit actuator.
Does the fuser exit actuator appear to be binding or sticking 
in its normal resting position and not allowing media to 
pass?Replace the fuser 
exit actuator.
Go to “Sensor 
(fuser exit) 
removal” on 
page 4-103.Go to step 3....