Oki Data CONFIDENTIAL
2. TROUBLESHOOTING PROCEDURES
45762101TH Rev.1
2-70
2.6 Fuse Checking
Table 7-6 Fuse Errors
Fuse Name Error Description Insert Point Resistance
CU/PU board
(MRM)
F1 Error 310(Cover Open)
occurs while printing.
2ND, POWFAN2, HVFAN,
FUSECUT, HVIF
1
Ω
or less
F2 No show on display.
Cover Open is shown on
display while printing.
HEAD, TAG, EXIT, WRSNS,
TONER, RCO, INSNS,
PAP, OPE, EXITM, THERM,
IDTHERM
F3 No show on display. and
POW LED brink first.
POWSU, USB POWER
SWITCH, RESET IC
F4 Machine does not work. USB POWER SWITCH
F5 Wireless LAN does not
work.
POWSU, USB POWER
SWITCH
F7 Power OFF/ON 923 Error
is shown on display.
Power save control, Clutch
Driver, Motor Driver
F9 OP is not displayed. OPE
F10 No show on display. and
POW LED brink first.
LED HEAD, LDO Regulator,
Board GOG-2(2ND Tray),
Power save1, Power save2,
FAN Driver
F11 Power Save button does
not work.
OPE
F12 HEAD missing. Fatal
error 134.
LED HEAD
F501 White papers are printed LED HEAD
F502 Scanner unit does not
work.
Scanner unit
Fuse Name Error Description Insert Point Resistance
SU board
(MSU)
F1 Service Call "Lamp
Error Please call
service.<03>"
CIS 1
Ω
or less
F2 Freeze up while
initializing.
RSET IC, I2C EXPANDER,
FAX, RTC
F3 Document jam occurs
while copying.
FAX, SOLENOID, CLUTCH
F4 Service Call "Power
OFF/ON Carridge Error
<02>"
ADF motor, FB motor
F5 Scanner unit doesn't
start up while initializing.
Graphic OP, FAX, OP-AMP,
SPEAKER
F6 Freeze up while
initializing. No display on
the operator panel.
USB to SD card, USB HUB,
Reset IC, FBS (HP Sensor),
ADFS(Sensor*4), LED Drive,
AFE, CIS1(CFA69)
F7 Scanner unit doesn't
start up while initializing.
Graphic OP, RSET IC, I2C
EXPANDER
F8 No display on the
operator panel.
USB to SD card, USB HUB,
Reset IC, FBS (HP Sensor),
ADFS(Sensor*4), LED Drive,
AFE, CIS1(CFA69)
F9 Scanner unit doesn't
start up while initializing.
Graphic OP, FAX, OP-AMP,
SPEAKER, USB Power SW
F10 No error after initializing,
but unavailable of Host
USB.
USB Power SW
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