Lexmark X543 Service Manual

Diagnostic information2-17
Lexmark confidential until announce7525xxx
122.16 Service
Fuser ErrorEWC Error—Estimated power is at or 
above maximum power.Go to “Fuser service check” on 
page 2-41.
141.xx Ser vice
Staging MotorStaging motor error. Go to “Autocompensator mechanism 
service check” on page 2-32
141.01 Service
Staging MotorStaging motor has exceeded the ramp 
up table.Go to “Autocompensator mechanism 
service check” on page 2-32
141.02 Service
Staging MotorStaging motor has exceeded number 
of...

2-18Service Manual 7525xxxLexmark confidential until announce
152.04 Service
Cyan Cartridge MotorTimeout waiting for SAP BLDC motor 
FG.Go to “Main drive gear assembly (EP 
drive) service check” on page 2-43. 
152.05 Service
Cyan Cartridge MotorLost lock for motor. Go to “Main drive gear assembly (EP 
drive) service check” on page 2-43. 
152.06 Service
Cyan Cartridge MotorExcessive SAP BLDC PWM. Go to “Main drive gear assembly (EP 
drive) service check” on page 2-43. 
152.07 Service
Cyan Cartridge...

Diagnostic information2-19
Lexmark confidential until announce7525xxx
154.05 Service
Yellow Cartridge 
MotorLost lock for motor. Go to “Main drive gear assembly (EP 
drive) service check” on page 2-43. 
154.06 Service
Yellow Cartridge 
MotorExcessive SAP BLDC PWM. Go to “Main drive gear assembly (EP 
drive) service check” on page 2-43. 
154.07 Service
Yellow Cartridge 
MotorMotor stalled in time-based 
commutation.
8xx service errors
840.01 Scanner 
disabledThe scanner is disabled and can’t be...

2-20Service Manual 7525xxxLexmark confidential until announce
845Front scan module cable failure or SCC 
card failureCCD channel failure. Check each 
channel(mono, R, G, B) for identical values 
indicating bad cable and/or SCC card. 
Excessive noise test for the dark data 
indicating some sort of CCD or analog 
electronics issue on that channel or 
channels.
Go to “CCD service check” on 
page 2-65
845.01Rear scan module cable failure or SCC 
card failureCCD channel failure. Check each 
channel(mono, R,...

Diagnostic information2-21
Lexmark confidential until announce7525xxx
847.01Fax Storage The amount of flash storage available on 
the device is too small. Note: The NAND 
Flash par tition can shrink as bit failures 
cause blocks to be invalidated. Go to 
“Format Fax Storage” on page 3-34. If 
the issue is not fixed, replace the controller 
board. Go to “Controller board removal” 
on page 4-16.
847.02Fax Storage The devices’ flash partition is invalid or 
unavailable. Go to “Format Fax Storage” 
on page...

2-22Service Manual 7525xxxLexmark confidential until announce
914.xx Ser vice
PC Pick MotorThe DC pick has no encoder feedback. Go to “Autocompensator mechanism 
service check” on page 2-35
917.xx Ser vice
Transfer RollThere is a problem with the transfer 
roll.Go to Go to “Transfer roll service check” 
on page 2-61. 
920.xx Ser vice
Fuser ErrorThe fuser is below temperature when 
printing.Go to “920.xx–923.xx—Fuser 
temperature incorrect” on page 2-32.
921.xx Ser vice
Fuser ErrorThe fuser is below...

Diagnostic information2-23
Lexmark confidential until announce7525xxx
940.xx Ser vice
LV Power SupplyA RIP to engine communication failure. 
The zero crossing signal used for fuser 
control in the low-voltage (LV) power 
supply has failed, or the wrong low-
voltage power supply has been 
installed.
940.00 Service
Cyan TMC SensorThe cyan cartridge toner meter cycle 
(TMC) switch error.
940.00 Service
Magenta TMC 
SensorThe magenta cartridge toner meter 
cycle (TMC) switch error.
940.00 Service
Yellow TMC...

2-24Service Manual 7525xxxLexmark confidential until announce
955.xx Ser vice
Code CRC The Code ROM or NAND flash failed 
the Cyclic Redundancy Check (CRC) 
check or the NAND experienced an 
uncorrectible multi-bit failure.  
indicates the source of the failure and 
has one of the following values: 
CRC Failure: The source is a 
failing package indicated by Pn 
where n is the package number. 
This error could occur on a 
controller with ROM or NAND flash 
and could occur as a result of the 
CRC check...

Diagnostic information2-25
Lexmark confidential until announce7525xxx
959.22 Service
System BoardChallenge Secret Failure. ASIC/SP mismatch
Replace controller board. See“Controller 
board removal” on page 4-16.
959.23 Service
System BoardHardware control self test failure during 
initialization.Replace controller board. See“Controller 
board removal” on page 4-16.
959.24 Service
System BoardEEPROM Retention Error (write failure) Replace controller board. See“Controller 
board removal” on page 4-16....

2-26Service Manual 7525xxxLexmark confidential until announce
978.xx Ser vice
Standard Network
or
978.xx Ser vice
Network Card xBad checksum while programming 
network port.Check the following:
 Make sure you have downloaded the 
code in binary mode, not ASCII.
 Reprogram the Network card.
 If the problem persists, and if installed, 
check the network card for correct 
installation.
 If correctly installed, replace the 
network card.
If a network card is not installed, replace 
the controller board....