Minolta magicolor 2300 Series Service Manual page 134

(13) FATAL ERROR CODE 1AH: Incorrect fusing roller high temperature
(14) FATAL ERROR CODE 1BH: Disconnection at thermistor
<Remedy>
Electrical components for detection of the malfunction
Thermistor (TH1)
Step Check
Is there a short circuit at TH1?
1 (between CN18-1 and -2 on
the thermistor)
(15) FATAL ERROR CODE 21H: Malfunction of the OHP detecting sensor
<Remedy>
Electrical components for detection of the malfunction
OHP detecting sensor (PC3A)
Step Remedy
1 Check PC3A operation.
2 Replace PWB-A.
3 Replace PWB-P.
(16) FATAL ERROR CODE 29H: Malfunction of the EEPROM (memory counter error)
(17) FATAL ERROR CODE 2AH: Malfunction of the EEPROM (memory data error)
(18) FATAL ERROR CODE 2BH: Malfunction of the EEPROM (memory access error)
(19) FATAL ERROR CODE 2CH: Malfunction of the EEPROM (memory recognition
error)
<Remedy>
Electrical components for detection of the malfunction
EEPROM
Step Remedy
1 Replace the EEPROM.
2 Replace PWB-A.
Master board (PWB-A)
Controller control board (PWB-P)
Result Remedy
Clean TH1.
YES
Replace the fusing
unit.
Replace PU.
NO
Replace PWB-A
Master board (PWB-A)
Controller control board (PWB-P)
Reference
page
Control signal
T-1 PC3_REM
- -
- -
Master board (PWB-A)
WARNING DIAGRAM
Reference
page
Control signal
- -
- -
134
WARNING DIAGRAM
Control Location(electrical
signal component)
HEATER 2-D
WARNING DIAGRAM
Location(electrical
component)
5-D
-
-
Location(electrical com-
ponent)
-
-