Human Humalyzer 2000 - Error Messages

12
Error Messages
Rev. B
Error messages are displayed when the instrument fails to operate correctly. They are intended to
help the operator locate the problem. If error messages appear frequently, a hardware problem is
usually indicated.
The following error messages indicate possible interface or component problems.
Lamp Failure
Lamp Output Low
Printer Paper Jam
Printer Not Ready
Waste is Full! XX
Empty Waste-Press Enter
Filter Wheel Err
Vacuum Leak
The lamp does not appear to illuminated at all. Low voltages
were detected for all filter positions. See the section "Photom-
eter" under "Troubleshooting".
The lamp does not appear to be illuminated sufficiently. Low
voltages were detected for some filter positions. This is possibly
due to degraded filters. See the section "Photometer" under
"Troubleshooting".
The internal printer paper path is obstructed. Clear the paper
path. If the paper path is clear, Check the 14-pin DIP cable
connecting the printer PCB to the interface PCB.
The external printer attached to the parallel port or serial port is
out of paper or otherwise unable to print. If chronic, this may
indicate an incorrectly wired external cable.
The waste material has reached the level sensors. If the waste
bottle is empty, check the sensor cable, jack, and internal wiring
for shorts. On the pump control PCB, check U2A, Q2 and U3:
Check the cable from the pump control PCB to the main PCB.
See "Waste is Full !", above.
The instrument cannot correctly detect pulses from the filter
wheel. Check the photometer LED board and the phototransistors
Q12 and Q13 on the photometer PCB. See the section "Photom-
eter" under "Troubleshooting".
The self-check routine was unable to achieve vacuum within the
prescribed length of time. Check for leaks at the waste bottle and
at all connections.
Humalyzer 2000) Service Manual