HP 750 - Manual (Page 135)

Troubleshooting C4705-90000 8-17
Service Tests
The following is a list of all internal service tests available in the plotters. Instructions for
entering the service tests menu are given on page 8Ć20.
1 EEROM ' page 8Ć21
The purpose ofthis test is to clear or test the EEROM.
2 EEROM Clear Counters ' page 8Ć22
The purpose ofthis test is to reset the counters ofthe EEROM after periodic preventive
maintenance has been performed.
3 EEROM Model Type ' page 8Ć23
The purpose ofthis test is to set the correct plotter model (not applicable to the DesignJet
700). This test also allows you to view (get) which plotter model is currently set.
4 MIO ' page 8Ć24
The purpose ofthis test is to check ifthe MIO card is present and verify its functionality.
5 Main PCA ' page 8Ć25
The purpose ofthis test is to do an extended functionality check ofthe internal circuits of
the main PCA which are not involved with any other board.
6 MainĆCarriage Com ' page 8Ć26
The purpose ofthis test is to check all circuits involved in communicating between the
main PCA and the carriage.
7 Carriage ' page 8Ć27
The purpose ofthis test is to check the internal circuits ofthe carriage PCA.
8 Thermal Control ' page 8Ć28
The purpose of this test is to verify the functionality of the sense resistors and any
associated electronics.
9 TTOE ' page 8Ć29
The purpose ofthis test is to calibrate the Thermal TurnĆOn Energy for each cartridge.
10 Pen Continuity ' page 8Ć30
The purpose ofthis test is to check for proper interconnection between the cartridge(s)
and the carriage.
11 Pen ID ' page 8Ć31
The purpose ofthis test is to check the pen ID and the resistance values.