Oki C7400 Maintenance Manual page 103

2-2 Paper Loading Jam (Multipurpose Tray)
• Has the paper loading jam occurred immediately after power-on?
• Yes Is the paper jammed at the entrance cassette sensor or the entrance MT sensor?
Yes Remove the jammed paper.
A
• No Does the entrance MT sensor lever move properly?
No Replace the defective sensor lever.
• Yes Does the entrance MT sensor operate properly?
(Operate each sensor lever to check that the sensor operates correctly on the switch scan
test in the system maintenance mode or check the signals on the FSENS connector pin of
the engine board (71K PWB).)
Pin 2: Entrance MT sensor
No Replace the sensor board (R71 PWB) after checking the signal cable connection.
• Yes Replace the engine board after checking the signal cable connection.
• No Has the paper loading jam occurred immediately after the paper drawing into the tray?
• Yes Has the paper reached the entrance MT sensor?
Yes Go to
• No Replace the multipurpose tray Assy.
• No Is the registration motor running?
• No Is 32V output to the fuse FU3 of the engine board?
No Replace the low voltage unit.
• Yes Replace the engine board after checking the cable connection.
• Yes Replace the engine board after checking the cable connection.
41316401TH Rev.9
A
.
Oki Data CONFIDENTIAL
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