Frontier LP7500 Service Manual page 568

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No. 06087
Laser Control PCB system error.
Error message release
YES
Condition
An error occurs on the laser control PCB.
Suffix number
00001 (Unused)
00002 SD-RAM mounted on the laser control PCB is abnormal.
00003 The image data sent from the printer I/F main PCB to the laser control PCB via LVPECL and the image
information sent via ARCNET communication do not match.
00004 Pixel value of the main scanning direction of the image data is small or large.
00005 (Unused)
00006 Exposure does not complete even though a specified time has elapsed after starting the exposure.
00007 Pixel value of the main scanning direction of the image data is small or large.
00008 Lookup table data and shading table sent from the main PC cannot be transferred to the laser control PCB
successfully.
Communication between the printer I/F main PCB and laser control PCB via ARCNET line ended abnormally at
turning on the power supply.
• LUT data from the printer I/F main PCB is identified as abnormal.
• Shading data from the printer I/F main PCB is identified as abnormal.
00009 Received LUT magazine code and exposure-specified magazine code do not match at starting the printing
operation.
There are two communication: Printer I/F main PCB → laser and printer I/F main PCB → printer → laser.
00019
When exposing, these two communications have the same receipt number.
This message is shown if the receipt number is different between two communications.
00022 Cable connection error between the printer control PCB and laser control PCB occurs.
00024 The laser control PCB transferred the signal that image data transfer was completed, but the printer I/F main
PCB could not receive the signal.
Diagnosis
The countermeasure action and the failed part would differ depending on the suffix number (bit).
Suffix number (bit)
00002 Laser control PCB may be defective.
00006
00003 Check the cable connection between printer I/F main PCB and laser control PCB. (LVPECL)
• Perform Printer I/F Main PCB Self-Diagnostic.
• Failure in the laser control PCB
• Failure in the Printer I/F Main PCB
This error may occur if the ARCNET communication status is abnormal.
• For details about the diagnosis of ARCNET communication error, see
0004 It does not occur normally.
0007
66010
35930
66010
66005
46000
Condition
Condition
Countermeasure
46000
Error message: Printer 1
35940.
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