Brother HL-3450CN Series, Service Manual

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CHAPTER 5 CONTROL PANEL OPERATION
5-10
2.4 Test Print Mode
This mode prints the specified pattern in order to check the engine.
<Procedure>
1) Press the -, + Set buttons in this order while holding down the Go button to enter the
test print mode.
2) The ‘PRINT MENU’ message is displayed on the LCD. Select ‘single test print’ or
‘repeat test print’ by pressing the – or + button, then press the Set button.
3) If selecting ‘single test print’, select one of the following items by pressing the – or +
button, then press the Set button.
Single test print
TEST PTN=A – H Halftone Reproduction
TEST PTN=G – H Line Reproduction
TEST PTN=K2 Color Reproduction, registration and jitter
TEST PTN=STRIPE Fusing
TEST PTN=NORMAL Prints the test print page normally.
TEST PTN=GRID 10mm grid pattern (to check the magnification and
paper skew.)
TEST PTN=LINE Horizontal line with 2 dots and 3 spaces (to check the
pitch of paper feeding.)
TEST PTN=BLACK Prints the all black page. (to check the damage on the
fusing unit.)
TEST PTN=WHITE Prints the blank page. (to check the black spots or
dark printing.)
4) If selecting ‘repeat test print’, select one of the following items by pressing the – or +
button, then press the Set button.
Repeat test print (For the printed page, refer to ‘single test print’ described
above.)
TEST PTN=NORMAL
TEST PTN=GRID
TEST PTN=LINE
TEST PTN=BLACK
TEST PTN=WHITE
2.5 NVRAM Reset Mode
This mode forces the NVRAM value of the video controller to be reset to the factory settings.
<Procedure>
1) While holding down the Set button, turn on the power.
2) Hold down the Set button until “RAM SIZE” is displayed on the LCD panel and the
LEDs are all on momently.
3) The printer is reset to the factory setting.