Brother International HL-2600CN Service Manual - Page 133

2.4 Test Print Mode This mode prints the specified pattern in order to check the engine. 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. 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. V-8