Video Controller Mode; Configuration Of Operational Mode - Brother HL-3450CN Service Manual

CHAPTER 5 CONTROL PANEL OPERATION
2.

VIDEO CONTROLLER MODE

This section describes the operation and maintenance functions in the Video Controller
Mode.
2.1

Configuration of Operational Mode

This printer has various functions as set out in Table 5-1 for users to easily perform general
test printing, general settings and some maintenance work.
(1) Normal Mode:
(2) Line Test Mode:
(3) DRAM Test Mode: This mode is provided to test installed DIMM(s) on the main (video
(4) Test Print Mode:
(5) NVRAM Reset Mode:
Power on
+ button + - button + Power on
Go button + + button + Power on
Press the –, + and Set buttons in
this order while holding down the
Go button.
Set button + Power on
After turning on the printer, the printer goes into Normal Mode.
This mode provides normal printing for the end user. The following
section describes the toner save mode and the power save mode.
For other modes, refer to the user's guide.
This mode provides a self-test for each function in the Video
Controller Mode mainly for use when replacing the main (video
controller) PCB.
Whenever the video controller is replaced, these checks should be
carried out.
This mode provides performance tests for the engine LCD, control
panel buttons and various sensors.
controller) PCB.
This mode allows you to print the selected test pattern in order to
check the engine.
This mode forces the NVRAM values of the video controller to be
reset to the factory settings.
When replacing the main PCB, the NVRAM value is automatically
reset to the factory setting. However, this mode is effective when the
video controller does not work due to errors.
Table 5-1
5-4
Normal Mode
Line Test Mode
DRAM Test Mode
Test Print Mode
NVRAM Reset Mode