Oki OKIPAGE6w Troubleshooting Manual page 27

B-1 Initialization error and not restored
• Is the 16-MHz clock signal being put out to pin 3 of OCS1?
• No
t
• Yes Failure of IC6
B-2 Program ROM error
• Replace IC6)
B-3 Resident RAM error
• Are negative pulses being put out to Pin 4 , 23 (RAS0-N , CSA-N) of IC11?
• No
t
• Yes Are the signals at pins, 9 TO 12 , 14 TO 18 , 5
(DA00-P to DA09-P) of IC11 being changed?
• No
t
• Yes Replace IC11.
B-4 EEPROM error
• Replace IC4.
t
• OK?
t
• No Failure of IC6
B-5 Fuser error/ Thermistor Open error/ Thermistor Short error
• Is the heater on?
• No
t
• No Failure of IC6
B-6 Watchdog timer timeout occurs frequently.
Failure of IC6
Replace OSC1.
Failure of IC6
Failure of IC6
Is the voltage at Pin 40 (HEATON-P) of IC6(MSM65917) 5V?
• Yes
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