Oki C9400 Maintenance Manual page 77

Equipment plane view
S/C-121
FAN#2
S/C-121
AC SW
S/C
120 Error detected at cooling fan for Engine
PCB(PCB-K73 PU board).
121 Error detected at two Power Unit cooling
fans./ Error detected at Power Unit
temperature rise./ Error detected at
charge output or Interface signals in
High-voltage Power Unit.
122 Error detected at fan for a heater exhaust
gas.
41388601TH Rev.6
FAN#5
S/C-51
CUboaud FAN#3
S/C-122
Power
Supply Unit
S/C-unspecified
FAN#1
S/C-121
Figure 5.5.1 A Power Supply-related Error
Description
PU
S/C-121
High-voltage
Power Supply
Notice: S/C---> Service Call
Action
Change FAN#4.
Change FAN#1 or / and FAN#2 when a error occurs
and the FAN#1 or FAN#2 are not turnning. In this case,
please also check contents of 5.5.2 LCD message
troubleshooting-6Fan motor error. If Both FAN#1 and
FAN#2 are turnning, change a Belt-Unit. If an error
occurs also with this means, change a High-Voltage
Power Supply Unit. If an error occurs also with this
means, change a Power Supply Unit.
Change FAN#3.
Oki Data CONFIDENTIAL
S/C-120
FAN#4
77 /