HP LaserJet Enterprise 500 Maintenance Manual - Page 44

Data Protocol, Baud Rate, Data Bits

Page 44 highlights

Chapter 4 Troubleshooting Display Messages Message FIRMWARE ERROR FRAMING ERROR FREEFORM OFF FREEFORM ON: OFF HOLD KEY @ PWRUP Table 2. Message List Explanation Solution Application software tried to perform an illegal printer function or damaged memory is detected on the CMX controller board. If the message appears at power-up, replace the CMX controller board. Record the message and return it with defective CMX board. 1. Cycle power. Run the print job. If the message appears, download the emulation software again (page 129). 2. Cycle power. Run the print job again. If the message appears, replace the flash memory. 3. Cycle power. Run the print job again. If the message appears, replace the CMX controller board. Record the message and return it with defective CMX board. 4. Power on the printer. Run the print job again. If the message still appears, there is an application software error. Use your local support procedure to request assistance. The printed output may contain random ! (exclamation point) characters. This message can appear if a control panel key is stuck in the down position. Check the control panel for stuck key(s). This message appears if the freeform feature is enabled. This feature is for manufacturing use only and is never used by the customer or field maintenance personnel. 1. Make a configuration printout. Set printer serial interface parameters to match host configuration settings for Data Protocol, Baud Rate, Data Bits, Stop Bits, Parity, Data Terminal Ready, and Request to Send. 2. Send a print job to the printer. If the message appears, go to Communications Failures, page 83. 1. Release stuck keys. Determine and correct what made the key(s) stick. 2. Cycle power: power off the printer, wait 15 seconds, power on the printer. If the message appears, replace the control panel. 1. Power off the printer. Hold any control panel key down and power on the printer. Hold the key down until the printer powers up and the message FREEFORM OFF appears on the LCD. 2. If the message reappears after doing step 1, replace the CMX controller board. Record the message and return it with defective CMX board. 44

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44
Chapter
4
Troubleshooting Display Messages
FIRMWARE ERROR
Application software tried to
perform an illegal printer
function or damaged memory is
detected on the CMX controller
board. If the message appears
at power-up, replace the CMX
controller board. Record the
message and return it with
defective CMX board.
1.
Cycle power. Run the print job. If the
message appears, download the
emulation software again (page 129).
2.
Cycle power. Run the print job again.
If the message appears, replace the
flash memory.
3.
Cycle power. Run the print job again.
If the message appears, replace the
CMX controller board. Record the
message and return it with defective
CMX board.
4.
Power on the printer. Run the print
job again. If the message still
appears, there is an application
software error. Use your local support
procedure to request assistance.
FRAMING ERROR
The printed output may contain
random ! (exclamation point)
characters.
1.
Make a configuration printout. Set
printer serial interface parameters to
match host configuration settings for
Data Protocol, Baud Rate, Data Bits,
Stop Bits, Parity, Data Terminal
Ready, and Request to Send.
2.
Send a print job to the printer. If the
message appears, go to
Communications Failures
, page
83.
FREEFORM OFF
This message can appear if a
control panel key is stuck in the
down position. Check the
control panel for stuck key(s).
1.
Release stuck keys. Determine and
correct what made the key(s) stick.
2.
Cycle power: power off the printer,
wait 15 seconds, power on the
printer. If the message appears,
replace the control panel.
FREEFORM ON: OFF
HOLD KEY @ PWRUP
This message appears if the
freeform feature is enabled.
This feature is for
manufacturing use only and is
never used by the customer or
field maintenance personnel.
1.
Power off the printer. Hold any
control panel key down and power on
the printer. Hold the key down until
the printer powers up and the
message FREEFORM OFF appears
on the LCD.
2.
If the message reappears after doing
step 1, replace the CMX controller
board. Record the message and
return it with defective CMX board.
Table 2. Message List
Message
Explanation
Solution