Konica Minolta 2300 Service Manual page 165

(13) FATAL ERROR CODE 1AH / SERVICE CALL 1A FUSER UNIT: Incorrect fusing
roller high temperature
(14) FATAL ERROR CODE 1BH / SERVICE CALL 1B FUSER UNIT: 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 / SERVICE CALL 21 TRANS DET SENS: 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 / SERVICE CALL 29 MEM MALF COUNTER: Malfunc-
tion of the EEPROM (memory counter error)
(17) FATAL ERROR CODE 2AH / SERVICE CALL 2A MEM MALF DATA: Malfunction
of the EEPROM (memory data error)
(18) FATAL ERROR CODE 2BH / SERVICE CALL 2B MEM MALF ACCESS: Malfunc-
tion 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
Master board (PWB-A)
Controller control board (PWB-P)
Result Remedy
Clean TH1.
YES
Replace the fusing
unit.
HEATER
Replace PU.
NO
Replace PWB-A
Master board (PWB-A)
Controller control board (PWB-P)
WARNING DIAGRAM
Reference
page
Control signal
149 PC3_REM
- -
- -
Master board (PWB-A)
165
WARNING DIAGRAM
Control Location(electrical
signal component)
2-D
Location(electrical
component)
5-D
-
-