Inspection Mode; Entering Inspection Mode - Brother HL-1850 Service Manual

CHAPTER 6 TROUBLESHOOTING
9.

INSPECTION MODE

9.1

Entering Inspection Mode

Select the inspection mode you want to use following the steps below;
(1) Turn off the power switch of the printer
(2) Turn on the power switch while holding down the Go switch and the Set switch.
(3) Release the both switches when the message “GO TEST MODE” appears on the LCD
display.
(4) Holding down the Go switch will cause the 16 black square symbol appear in order on the
LCD display from the left to the right as the figure shown below, and when you release the
switch, a mode is selected:
Inspection Mode List
Where you release
the ‘Go’ switch
2nd Square
10th Square
11th Square
12th Square
13th Square
14th Square
15th Square
16th Square
Left
1st Square Prints a test sample page. Prints a test print page when the NV-
RAM setting is OFF. (When “NV_DEMO” value is “0”.)
Prints the Print Configuration page and a font list.
3rd Square Returns to the factory default settings.
4th Square NVRAM hex dump mode (Not used when the NV-RAM setting is
OFF; when “NV_DISPMAINT” value is “0”.)
5th Square Writes the main program.
6th Square Not used
7th Square Writes the engine patch program.
8th Square Not used
9th Square Writes the message patch program.
Prints a continuous grid pattern test page.
Prints fusing test print pages in three different modes;
grid
4% density pattern print mode
Not used
Factory check mode Do not use this mode.
Not used
Sensor check mode (See
Fig. 6-36
Type of inspection
horizontal stripes 100% density
9.2 ‘Sensor Check
6-66
Right
Mode’)