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

3.

ENGINE CONTROLLER MODE

This section describes the operation and setting procedures for each engine test in the
Engine Controller Mode.
In order to go into the Engine Controller Mode, turn on the printer while holding down the
Secure Print, Back, Set buttons.
3.1

Configuration of Operational Mode

This printer has the various functions as set out in Table 5-2 for the user to easily understand
the operation status of the printer engine during maintenance work.
(1) Normal Mode: After removing the main PCB from the printer and pressing the Ready
NOTE:
Be sure to remove the main controller PCB before the printer goes into the Engine Normal
Mode. If you fail to do so, the printer goes into sleep mode.
(2) Service Mode: After turning on the printer in the off-line status, the printer goes into
button under the Engine Controller Mode, the printer goes into the
Engine Normal Mode.
This mode provides functions to indicate the operation status of the
printer and also messages relating to normal operations which the
operator is controlling.
Service Mode.
This mode is a unique mode for the serviceman only and provides
additional functions (codes 31 through 37) to confirm the operational
status during maintenance work and '39 FACTORY MODE' to confirm
and set the operational status of the main components.
5-11
HL-3450CN SERVICE MANUAL