Confidential
1.4.24 Color test pattern (Function code 71) ............................................................ 5-52
1.4.25 Sensitivity adjustment of density sensor (Function code 72)......................... 5-54
1.4.26 Setting by country (Function code 74)........................................................... 5-55
1.4.27 Printout of maintenance information (Function code 77)............................... 5-57
1.4.28 Operational check of fans (Function code 78)...............................................5-58
1.4.29 Display of the machine history (log) (Function code 80) ............................... 5-59
1.4.30 Error code indication (Function code 82)....................................................... 5-64
1.4.31 Developing bias voltage correction (Function code 83)................................. 5-65
1.4.32 Sending communication error list (Function code 87) ................................... 5-66
1.4.33 Counter reset after replacing the fuser unit and paper feeding kit
(Function code 88)......................................................................................... 5-66
1.4.34 Exit from the maintenance mode (Function code 99).................................... 5-67
2. OTHER SERVICE FUNCTIONS...............................................................5-68
2.1 Developer Roller Counter Reset Function................................................................5-68
2.2 Parts Life Reset Function ......................................................................................... 5-69
2.3 Deletion of User Setting Information, etc..................................................................5-70
2.4 How to Recover from Errors of the Fuser Unit .........................................................5-71
2.5 Drum Cleaning..........................................................................................................5-72
2.6 Deep Sleep Function ................................................................................................ 5-73
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