Brother DP-550CJ, Service Manual

Page: 98 / 194

REPAIR
SERVICE MANUAL
Troubleshooting
3-35
(4) To run Test "6" (all keys in Fig. 3.21, "A" and "B")
a) Starting from the top left of the keyboard, press all keys ("A" & "B") in the
sequence indicated below.
b) Then press SHIFT + Z, SHIFT + /, and CODE + SPACE. If there is no problem,
the message "KB TEST OK" will be printed, and the display will return to the
SELF Test menu.
NOTES:
•
After automatic carriage return, "KB TEST OK" is printed, and the display returns to the
SELF Test menu.
•
A paper check is performed before printing. If paper is set, the print test is executed; if
no paper is set, the ERROR pop-up window is displayed. If you select to continue
printing, paper is automatically inserted by the ACF and to execute the print test.
•
If the keys are pressed in the wrong sequence, a beep sounds. The test will continue
when the correct key is pressed.
•
At any time during the test, you may cancel by pressing RETURN twice to return to the
SELF Test menu.
Test Keys
Sequence