Repair manual

3-4
TROUBLESHOOTING
B: Diagnostic Software / Hardware Procedure
Objective: This procedure is intended to describe the use and function of Diagnostic software and
hardware. The diagnostic program which runs on the host computer, sends ASCII
commands to the monitor to perform the specific tests. The bulk of the diagnostic tests
actually reside in the monitor program on the logic board. Typing "DP2DIAG” initiates
the tests and reports the results of each test.
If Diagnostics fails at any point in these tests, replace the logic board.
Tools and Equipment:
Polaroid Part #
IBM-XT or IBM-AT or compatable (IBM-AT is preferred)
(with bidirectional parallel port)
Diagnostic Software 13436
I/O Test Connector 13434
Monitor Test Connector 13435
Procedure:
At this section of the procedure, power should be disconnected and proper static prevention
methods should be utilized.
1. Remove the following, to access and isolate the logic board.
a. Cover of Digital Palette.
b. Monitor board (insulate to prevent shorting).
c. Connectors J11, J8, J7, J13 (I/O connectors for photocell photointerrupter, stepping
motor, front panel LED and front panel camera connector.)
2. Place the monitor test connector on J9 and J13.
3. Place the I/O test connector on J6, J7, J8 and J11.
4. Connect Digital Palette to the host computer via bidirectional parallel port and
then power the system on.
5. To initiate diagnostics, type ‘DP2DIAG’ at the DOS prompt. One command
line argument is required and two additional arguments are optional.