Ricoh G147 Service Manual page 170

Lower tray lower limit sensor defective
Finisher lower tray shift motor error
The lower tray did not reach the home
734 D
position within 1.25 sec. after the
lower tray shift motor turned on.
Watchdog error
The bus is being held by another
device, or a CPU-device infinite
loop has occurred. A module that
818 C
the watchdog is monitoring has
not closed properly at the
conclusion of its task, or the
module cannot continue
processing.
819 C Fatal kernel error
Due to a control error, a RAM overflow
occurred during system processing. One of
the following messages was displayed on
the operation panel.
0x696e
0x766d
G147
"init died"
"vm_pageout: VM is full"
4-20
Lower tray shift motor
connector or harness loose,
broken, defective
Lower tray shift motor defective
or overloaded due to an
obstruction
Lower tray shift sensor harness
or connector loose, broken,
defective
Lower tray shift sensor
defective
System program defective; switch
off/on, or change the controller
firmware if the problem cannot be
solved
Controller board defective
Controller option malfunction
System program defective
Controller board defective
Optional board defective
Replace controller firmware
SM