The solution when Error Code 76,77,78 shown in the machine: - Page 194

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The solution when Error Code 76,77,78 shown in the machine:   

                      It’s possible that the temperature of the heater rises when these kinds of error occur. Therefore, the 

heater is programmed to turn off the power for 10 minutes after the switch is on for the safety 
concern when the error occurs.  

To help the heater work properly, it’s necessary to follow the operating procedures as below after 
taking measures against the cause of the error.    

1.  Turn off the switch. Wait until the temperature of the heater lowers enough.                       

2.  Turn on the switch. 

3.  Display the maintenance mode, then switch to the desired mode or keep the power on for 10 

minutes. 

Error Code 

(Hex) 

Symptom Probable 

Cause 

Solution 

Thermistor in the fixing 
unit defective 

Replace the thermistor in 
the fixing unit. 

PS PCB unit defective 

Replace PS PCB unit. 

76 

Heater overheats. 

Main PCB defective 

Replace the main PCB. 

77 

The power supply is turned  
off when the error 76 or 78  
occurs. 

--- --- 

Poor connection in the 
harness of the halogen 
lamp 

Reinsert and adjust the 
harness 

Halogen lamp defective

Replace halogen lamp. 

Thermistor defective 

Replace the thermistor  

PS PCB unit defective 

Replace PS PCB unit. 

78 

Temperature of the heater does 
not rise.

Main PCB defective 

Replace the main PCB. 

79 

In casing temperature sensor  
harness disconnected or  
broken. (Not used.) 

Main PCB defective 

Replace the main PCB. 

7A 

Main motor does not  
synchronize with the reference 
clock. 

Main motor defective 

Replace the main motor. 

7B 

ASIC error on the main PCB. 
(Not used.) 

7C-7F Not 

used.