Kyocera 300ci Service Manual page 278

2JZ/2JX/2JV/2H7-6
Code
F040 Engine PWB communication error
F041 Scanner PWB communication error
Engine ROM checksum error
F050
F090 Fax control PWB communication
error
1-4-60
Contents
Causes Check procedures/corrective measures
Firmware upgrade Only for engine firmware, execute upgrading
error using USB memory in which software for 40/
40, 50/40 ppm model and for 25/25, 30/30
ppm model are stored individually.
Defective main Replace the main PWB and check for cor-
PWB. rect operation.
Defective engine Replace the engine PWB and check for cor-
PWB. rect operation.
Defective main Replace the main PWB and check for cor-
PWB. rect operation.
Defective ISM Replace the ISM PWB and check for correct
PWB. operation.
Defective engine Replace the engine PWB and check for cor-
PWB. rect operation.
Defective main Replace the main PWB and check for cor-
PWB. rect operation.
Remarks