[ 2 ] Error codes shown in the "MACHINE ERROR X X" message- Page 193

Confidential

9-5

[ 2 ]  Error codes shown in the "MACHINE ERROR X X" message 

Error Code 

(Hex) 

Symptom Probable 

Cause 

Solution 

56 

The back cover is opened. 

The back cover is 
opened. 

Close the back cover. 

57-5A Not 

used. 

New toner actuator 
lever broken

Replace the new toner 
actuator. 

5B 

New toner sensor 
Error 
(New toner sensor stays on)

New toner sensor 
defective

Replace the new toner 
sensor. 

5C Not 

used. 

5D-69 Not 

used. 

Thermistor defective 

Replace the thermistor. 

6A 

Heater warming-up timeout  
error.  (Heater does not reach 
60 

˚

С

 w

ithin 11 second.) 

Halogen lamp defective 

Replace the halogen lamp.

Thermistor defective 

Replace the thermistor. 

6B 

Heater warming-up timeout  
error.  (Heater does not reach 
100 

˚

С

 w

ithin 15 second.) 

Halogen lamp defective 

Replace the halogen lamp.

Thermistor defective 

Replace the thermistor. 

6C 

Heater temperature exceeds  
the maximum high  
temperature.  (270

˚

С

 or more 

is detected for 1sec.) 

Power supply PCB  
defective 

Replace the power supply 
PCB. 

6D Not 

used. 

Halogen lamp defective 

Replace the halogen lamp.

6E 

Heater temperature does not  
go up enough. 

Power supply PCB  
defective 

Replace the power supply 
PCB. 

Thermistor defective 

Replace the thermistor. 

6F 

Heater hard limiter operates. 

Power supply PCB  
defective 

Replace the power supply 
PCB. 

70 Not 

used. 

Laser unit detective 

Replace the laser unit 

71 

Scanner motor does not 
synchronize with the reference 
clock. 

Main PCB detective 

Replace the main PCB 

Laser unit detective 

Replace the laser unit 

72 

Cannot detect Beam Detect 
signal.  

Main PCB detective 

Replace the main PCB 

73 

The drum unit is not mounted.
(Not used) 

Toner sensor defective 

Replace the toner sensor. 

74 Toner 

empty 

Toner empty 

Replace the toner  
cartridge. 

75 

In casing temperature error. 

Thermistor in the Frame 
L ASSY defective 

Replace the Thermistor in 
the Frame L ASSY.