Service Manual
Page 237
... print mode (grid, zip, black) NV-RAM value dump mode ROM code reprogramming mode (only when flash memory is ON. LED Toner Drum Paper Status Toner + Drum Drum + Paper Paper + Status Type ...is performed when USB I/F is connected with PC, PC requires the driver for 100msec. (No-lighting indicates an unusual state.) After checking of all 6 sensors, Toner LED is lit if no... NV-RAM value dump mode. HL-5030/5040/5050/5070N SERVICE MANUAL 1.3 Inspection Mode The printer incorporates various inspection modes such as shown below ; (1) Turn off the power switch of the printer. (2) Open the front cover...
... print mode (grid, zip, black) NV-RAM value dump mode ROM code reprogramming mode (only when flash memory is ON. LED Toner Drum Paper Status Toner + Drum Drum + Paper Paper + Status Type ...is performed when USB I/F is connected with PC, PC requires the driver for 100msec. (No-lighting indicates an unusual state.) After checking of all 6 sensors, Toner LED is lit if no... NV-RAM value dump mode. HL-5030/5040/5050/5070N SERVICE MANUAL 1.3 Inspection Mode The printer incorporates various inspection modes such as shown below ; (1) Turn off the power switch of the printer. (2) Open the front cover...