IBM 3112, Service Manual

Page: 69 / 184

bh1s.bk : bh1saids.doc 53 Thu Apr 20 12:42:16 1995
Diagnostic Aids
53
Print Test Page
You can run the Print Test even if the printer is not attached to a
computer. Use this test to check print and graphics quality and the
version numbers of printer microcode. The first page of this test
feeds from tray 1. Following pages continue to feed from this tray
unless you change the paper source.
To run the Print Test:
1. Turn the printer on.
2. Select [MENUS].
3. Select [TESTS MENU].
4. Select [Print Test Page].
5. Select either [Single] for one page or [Continuous] for
continuous test pages.
6. Select [Stop] when you want the continuous test to end.
Print Test with RIP Board Removed
Most meter measurements required during printer service will be on
the engine board connectors, which are inaccessible with the RIP
board in place. The printer has a service mode which allows you to
test the printer without the RIP board installed. This verifies that the
motors, sensors, printhead, and electrophotographic process are
working correctly. In this mode, the operator panel has minimal
function; service codes are not displayed and most error-handling is
disabled (during normal operation these functions are handled by
the RIP board).
Remove the RIP board and the inner EMC shield together and
power on the printer (See “RIP Board, Inner EMC Shield, and
Engine Board Removal” on page 91). The operator panel will have
one button active which starts and stops the print test. The test
consists of horizontal lines spaced about an inch apart down the
page. This is a continuous print test; to print a single page press the
start button twice.