M154/M155/M174/M175/A0A7/M287/M0BB iv SM
To Print the Test Page ........................................................................................... 5-33
5.2.4 TEST PATTERN PRINTING .............................................................................. 5-34
To Print the Test Pattern ........................................................................................ 5-34
5.3 UPDATING THE FIRMWARE ...................................................................................... 5-36
5.3.1 CHECKING THE MACHINE FIRMWARE VERSION ....................................... 5-36
5.3.2 UPDATING THE MAIN FIRMWARE ................................................................. 5-36
Procedure .............................................................................................................. 5-36
5.3.3 UPDATING THE BOOT LOADER FIRMWARE ................................................ 5-37
5.3.4 UPDATING FAILURE ........................................................................................ 5-37
5.3.5 FW UPDATE TOOL MESSAGES...................................................................... 5-38
FW Update Tool Messages: Information ............................................................... 5-38
FW Update Tool Messages: Error ......................................................................... 5-40
6. TROUBLESHOOTING................................................................... 6-1
6.1 SELF-DIAGNOSTIC MODE........................................................................................... 6-1
6.1.1 SELF-DIAGNOSTIC MODE AT POWER ON...................................................... 6-1
6.2 SERVICE CALL ............................................................................................................. 6-2
6.2.1 SUMMARY .......................................................................................................... 6-2
Fusing related SCs .................................................................................................. 6-2
6.2.2 ENGINE SC ......................................................................................................... 6-3
SC 2xx (Laser Optics Error) .................................................................................... 6-3
SC 4xx (Image Transfer and Transfer Error)........................................................... 6-5
SC 5xx (Motor and Fusing Error) ............................................................................ 6-6
SC 6xx (Communication and other Errors) ........................................................... 6-10
6.3 JAM DETECTION ........................................................................................................ 6-11
6.3.1 JAM SENSOR LAYOUT .................................................................................... 6-11
Paper Jam ............................................................................................................. 6-11
6.3.2 JAM MESSAGE LIST ........................................................................................ 6-11
Paper Jam ............................................................................................................. 6-12
6.4 IMAGE ADJUSTMENT ................................................................................................ 6-13
6.4.1 REGISTRATION ADJUSTMENT ...................................................................... 6-13
User Adjustment .................................................................................................... 6-13
Service Adjustment ................................................................................................ 6-13
6.5 IMAGE QUALITY ......................................................................................................... 6-16
6.5.1 OVERVIEW ....................................................................................................... 6-16
6.6 OTHER PROBLEMS.................................................................................................... 6-17
6.6.1 DARK LINES IN HALFTONE AREAS AT 75MM INTERVALS .......................... 6-17
6.7 TROUBLESHOOTING ................................................................................................. 6-18
6.7.1 JAM/PAPER FEED PROBLEM ......................................................................... 6-18
6.7.2 IMAGE QUALITY PROBLEM ............................................................................ 6-20
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