(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)

Master board (PWB-A)

Controller control board (PWB-P)

 

 

 

 

 

 

 

WARNING DIAGRAM

Step

Check

Result

Remedy

 

 

Control

Location(electrical

 

 

 

 

signal

component)

 

 

 

 

 

 

 

 

 

Clean TH1.

 

 

 

 

YES

 

 

 

 

Is there a short circuit at TH1?

Replace the fusing

 

 

1

(between CN18-1 and -2 on

 

unit.

HEATER

2-D

 

the thermistor)

NO

Replace PU.

 

 

 

 

 

 

 

 

 

Replace PWB-A

 

 

 

 

 

 

 

 

 

 

 

 

 

(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)

 

Master board (PWB-A)

 

 

 

Controller control board (PWB-P)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Reference

WARNING DIAGRAM

 

Step

Remedy

 

 

 

page

Control signal

Location(electrical

 

 

 

component)

 

 

 

 

 

 

 

 

 

 

 

 

 

1

Check PC3A operation.

149

PC3_REM

5-D

 

 

 

 

 

 

 

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)

165