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Section 6, Troubleshooting
Table 6-3. AIM/AIM Plus Alarm Codes 008 - 143
Code
Cause
Troubleshooting (repair as required)
143-HRDWRE
Hardware reset.
If the power is turned off or lost after the pump has been
RESET
Pump did not go
on for only a short time the supercap may not fully charge,
:
through the power
| and therefore the pump is unable to complete its
loss code.
processing. Weak batteries may make the supercap
charging take longer, thus increasing the chances of this
alarm occurring.
Check the voltage of the batteries and change both
batteries if required. Power off, wait one minute, then
power on again to clear alarm. if alarm does not reoccur, it
has been cleared.
if alarm reoccurs, power off the pump and access the test
mode as described in Section 5.3.2.3, Entering the
Service Test Mode. Select 02 CLEAR EXT RAM
then 03 CLEAR ERR LOG. Power off, wait one
minute, then power on again. If alarm does not
reoccur, it has been cleared.
If alarm reoccurs, check address or data pins on CPU
U19 or EPROM U15 or other failures which would
cause the supervisory circuit to reset the main
microprocessor. Also check C53.
6.3.3
Servo Calibration Failure Codes
When unable to complete the motor servo calibration, the pump may display a failure code. Refer to
Table 6-5. Troubleshooting, for possible error sources and solutions.
Table 6-4. Servo Calibration Failure Codes
Code
Reason for Failure
1
The minimum duty cycle required is over 60 (on a 0-255 scale).
The pump is detecting encoder signals when the pump should be off.
Less than ten encoder signals were detected when the duty cycle was greater than 60.
The motor current is zero.
The motor delivers less than 450 mL/hr when the duty cycle is 250.
430-600035-002 (Rev. 11/99)
6-14
AIM/AIM Plus Technical Service Manual
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Table of Contents
Troubleshooting
