mensor PCS 400 - Error Symptoms and Solutions; Table 5.1 - Error Symptoms and Solutions

Error Symptoms and Solutions
Table 5.1 - Error Symptoms and Solutions
Continued on next page...
Symptoms and Clues Possible Cause Try This
1
SYSTEM DOES NOT BOOT;
DISPLAY IS BLANK
CLUE: The display is powered by
five volts from the electrical module
through the display connector. If the
five volts is present, the cursor will
appear on the upper left of the
display.
The three pin display connec-
tor
É or its wires may be
disconnected from the front
panel or from the COM2 port
inside the electrical module.
---------------------
The power supply is shorted
out.
---------------------
The power supply in the
electrical module has failed.
Reconnect connector or wires.
-------------------------
Verify there are no loose parts or
circuit cards inside the electrical
module.
--------------------------
Return the PCS 400 or the electrical
module to Mensor for repair.
2
SYSTEM DOES NOT BOOT;
DISPLAY HAS A CURSOR IN
UPPER LEFT CORNER
CLUE: The display is receiving
power but the PCS 400 is not
loading and starting its program.
Circuit cards have popped out
of their connectors.
----------------------
The CPU board has lost its
battery backed CMOS data
(BIOS); The battery may be
discharged. See Figure 5.1,
Note 2.
----------------------
Program disk not loaded
properly.
Verify there are no loose parts or
circuit cards inside the electrical
module.
--------------------------
Remove rear panel and verify that
the program disk is fully seated in
the disk drive
12 .
3
SYSTEM DOES NOT BOOT; DIS-
PLAY SHOWS INITIALIZATION
SCREEN
CLUE: The PCS 400 is loading its
program correctly but it can’t
communicate with the primary
transducer in the pneumatics
module.
The cable connecting the
electrical module to the
transducer is disconnected or
shorted.
----------------------
The calibration of the main
transducer has been
corrupted.
Check the 50-pin connector
Ä
on the electrical module. Check the
25-pin connector
Á on the top
of the main transducer. Make sure
the other connectors on the cable
which goes to the main transducer
are not shorted against something.
--------------------------
Contact Mensor for help in
determining if this is the problem.
PCS 400 MAINTENANCE
www.mensor.com 5-3