Maintenance
Panel test
This test automatically toggles each pixel of the touchscreen through every contrast level
beginning with the darkest and on to the brightest. This test continues until you press "Stop"
.
Button test
The Button Test verifies the operation of the buttons on the operator panel. When you select
Button Test, a diagram of the operator panel appears on the panel. When you press a button on
the operator panel, the corresponding touchscreen key is emphasized. Touch "Back" to cancel the
test.
DRAM test
The purpose of this test is to check the validity of DRAM memory, both standard and optional. The
test writes patterns of data to DRAM to verify that each bit in memory can be set and read
correctly.
To run the DRAM Test:
1. Touch
to select DRAM Test from the menu. The message "DRAM Test Testing…"
displays. Then the message "Resetting" Printer appears, and the power indicator light blinks
red.
2. Turn the machine off and on. While the DRAM test executes, the power indicator blinks
green.The following type of message appears:
DRAM Test <### P:###### F:####
 xxx represents the installed DRAM size.
 P:###### represents the number of times the memory test has passed and finished
successfully. Initially 000000 displays with the maximum pass count being 999,999.
 F:##### represents the number of times the memory test has failed and finished with
errors. Initially 0000 displays with the maximum fail count being 99,999. Initially only four
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