Brother HL-1260 service manual Software1 Trap Turn off the printer. Wait a

Service Call Message	Meaning	Action
99 SERVICE 12	Software1 Trap	Turn off the printer. Wait a
		few seconds, then turn it on
		again. If it's still displayed
		on the LCD, replace the
		Main PCB.
99 SERVICE 13	Software2 Trap	Turn off the printer. Wait a
		few seconds, then turn it on
		again. If it's still displayed
		on the LCD, replace the
		Main PCB.

*"L" means "Long".

*"S" means "Short".

*"I" means "Instruction".

*"D" means "Data".

Note: When the service error reads on the LCD, it means that there is an CPU error. The possible cause is an hardware failure of the CPU or a program's bug, which caused CPU error in correspondence.

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