Oki OKIPAGE 10ex Troubleshooting Manual page 50

B-18 Paper feed jam occurs frequently.
• Is the main (drum) motor rotaing normally?
B-19 The key switch operation on the operator panel is disabled frequently.
• Is the clock signal (285kHz) being sent to Pin 6 of PANEL during key operations?
• Yes
• Yes
40990901TH Rev.1
• No Are the waveforms of DMPH1-P and DMPH2-P as shown in Section
3.9 (1) being sent to Pins 13 and 8 of IC9 (A2918SW) respectively?
• No Failure of IC1 (MHM2029-004K).
• Yes When the main (drum) motor is rotating, is DMON1-N at Pin 7 and 14
of IC9 (A2918SW) low?
• No Failure of IC1 (MHM2029-004K).
• Yes Is the voltage at Pin 5 of IC9 (A2918SW) +38V?
• No Replace FU1 (FUSE).
• Yes Replace IC9 (A2918SW).
• No Failure of the power supply board or mechanical parts.
• No Failure of IC1 (MHM2029-004K).
Is the data signal being sent to Pin 3 (PDATAOUT-P) of PANEL during key
operations?
• No Failure of IC1 (MHM2029-004K).
Verify the connection of PANEL.
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