Service manual

Chapter 5
5-9
F-5-11
Before D-RAM test, output all image data in image memory. When D-RAM test is performed, all image data are cleared.
5.5.4.3 Print Test
5.5.4.3.1 PRINT Test
0008-1980
The Print Test menu is selected by pressing the numeric key 3 from the test mode menu.
In this test, various print patterns are output from the printer. As service print patterns, press the numeric key 2 from the Print Test menu to select "3-2: BLACK"
or press the numeric key 6 to select "3-6: ENDURANCE". Do not use the other patterns. They are for development and factory use.
Check for white stripes and unevenness on the Black pattern, and check for image shrinkig, stretching, soiling, and black strips on the Endurance pattern.
F-5-12
Memo
After completion of the print test, if the printing was normal, copy a document. If there is any defect in the copied image, there is a defect in the scan
section.
5.5.4.4 Modem Test
5.5.4.4.1 Modem Tests
0008-1981
The Modem Test menu is selected by pressing the numeric key 4 from the test mode menu.
These tests test modem and NCU transmission and reception. The modem tests check whether signals are sent correctly from the modem by comparing the sound
of the signals from the speaker with the sounds from a normal modem.
End this test by pressing the Stop/Reset key.
Error
Restart by pressing
Start button
DRAM TEST 40960KB
.......
DRAM TEST 40960KB
complete (no error)
WRT=33CC RD=33EC
ADR=BF840201
DRAM TEST 40960KB
complete (error)
40960KB: D-RAM total memory capacity (bytes)
✽ : Indicates an address for which write testing is complete.
. : Indicates an address for which read testing is complete.
Operating
Normal end
(Normal end)
Error display
WRT : data written
RD : data read
ADR : address