Brother International HL 1240 Service Manual - Page 36

CHAPTER 2 INSTALLATION AND BASIC OPERATION 5.2 Data (Toner) LED Indications The Data LED indicates the current status of the print data process. LED Printer status OFF The printer has no print data. Blinking The printer is receiving data from the computer or the printer is processing data in memory. ON Print data remains in the printer memory. If the Data LED is on for a long period of time and nothing has printed, you need to press the button to print the remaining data. This LED also works as the Toner LED with the Alarm LED. They blink simultaneously to indicate a toner error. See also Subsection 2.1 'Operator Calls' in CHAPTER 6 for details. Error Action Toner low Indicates that the toner cartridge is nearly empty. Purchase a new toner cartridge ready for when the 'Toner empty' error is indicated. Toner empty Replace the toner cartridge with a new one. 5.3 Drum LED Indications The Drum LED indicates the drum unit is nearly at the end of its life. LED Printer status OFF The drum unit can be used. ON The drum unit is nearly at the end of its life. It is recommended to obtain a new drum unit to replace the current one. 5.4 Alarm LED Indications The Alarm LED blinks (with no other LEDs) to indicate a printer error status such as "cover open" or "memory full". If any other error occurs, the printer indicates the error by blinking the Alarm LED with another LED or by printing an error report. Refer to Subsection 2.2 'Service Calls' in CHAPTER 6. 2-14