Symptom: 7022 does not complete Power-On Self-Test. At ~8.6 seconds is first appearance of "Konica" splash screen, which immediately flashes off and restarts the POST; subsequently the splash screen reappears for an instant every 7.5 seconds, then POST begins again. So of course it never gets to an error code.
The other visual clue is that the POWER SAVER ON/OFF button lights when power is turned on, then flashes off briefly 3 times within that 7.5 second period: once coincident with the flash of the splash screen (when POST restarts), then 4.5 seconds later, then 1.5 seconds, then 1.5 seconds - at which point the cycle begins again. [When the splash screen flashes on (and the POWER button flashes off, at the same time the LEDs for the COPY, FAX and SCAN/PRINT buttons flash on, so apparently it just gets to the point in POST of testing the control panel.] There are no audible clues; the fan starts normally, and POST does not complete to the point of initializing any other mechanical components.
Any ideas what might be wrong?
The other visual clue is that the POWER SAVER ON/OFF button lights when power is turned on, then flashes off briefly 3 times within that 7.5 second period: once coincident with the flash of the splash screen (when POST restarts), then 4.5 seconds later, then 1.5 seconds, then 1.5 seconds - at which point the cycle begins again. [When the splash screen flashes on (and the POWER button flashes off, at the same time the LEDs for the COPY, FAX and SCAN/PRINT buttons flash on, so apparently it just gets to the point in POST of testing the control panel.] There are no audible clues; the fan starts normally, and POST does not complete to the point of initializing any other mechanical components.
Any ideas what might be wrong?
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