Self Test Screen - Laversab 6600 User Manual

3.4

SELF TEST SCREEN

As part of the start up procedure, it is recommended that a Self Test be performed on the 6600.
Before performing the Self Test you must follow the start up procedure explained in section
3.1. The Main Operating Screen must be displayed on the Remote unit. There should be no
errors displayed on line 4 of the display. If there are errors on line 4 of the display, press
CANCEL to clear each error as it appears, until line 4 is clear.
Now press the NEXT SCREEN key two times. The display will show the screen shown below.
There are seven tests performed on the system. These tests check every subsystem for
acceptable operation. If a malfunction is detected in any part of a subsystem, that subsystem
is flagged as defective. Once a defective subsystem is detected, the self test function is
aborted. Therefore, if more than one subsystem is defective, the first defective subsystem will
cause the tests to abort, thereby preventing the user from detecting the flaws in the other
malfunctioning subsystems.
The tests are performed on the following subsystems:
1. System ROM.
2. System RAM.
3. Ps1 and Ps2 pressure measurement systems
4. Pt pressure measurement system
5. Pressure and Vacuum pump assembly
6. Ps1 and Ps2 pressure control system
7. Pt pressure control system.
To start the Self Test, please make sure that at least one port of each of the Pt, Ps1 and Ps2
outputs are open to ambient, and then press GO. The status of each test will be displayed on
the screen as shown below.
ROM OK
Ps1, Ps2 measurement system OK
Pt measurement system OK
After the pump section test has passed successfully, the screen is cleared and the status of the
remaining tests is displayed as shown below.
SELF TESTS
Please vent Pt, Ps1 and Ps2 ports
to ambient, then press "GO"
RAM OK
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