Instruction manual

12.0 TROUBLESHOOTING SM425 INSTRUCTION MANUAL
12.1.2.3 Error-3: A/D Converter Failure and Error-4: Writing-to-Memory Failure
• A/D Conver r Failure
emory Failure
It is sus ted that a failure has occurred in an operation writing to the memory (EEPROM)
mounted in the electronic circuits inside the converter.
ctive Actions >
once and then restart the converter. If the converter operates
ight have occurred due to a temporary drop in the supply voltage
(falling
event. C ify the converter and detector are
securely grounded.
If the error occurs again after restarting, an electronic circuit failure has likely occurred. Consult the
12.2 Alarms: Displays and Corrective Actions
The alarm indication blinks on the display to notify of an active alarm (Figure 12-3). Pressing the alarm
indication displays a description of the alarm. Alarms include those shown in Table 12-2.
te
The A/D converter circuit has failed.
• Writing-to m
pec
< Troubleshooting and Corre
Turn off the power to the converter
normally after restarting, an error m
below 85 V, the least amount of voltage required to operate the converter) or a noise induced
heck if there is a failure in the power supply system Ver
service personnel at Teledyne Monitor Labs.
12.2.1 What is an Alarm?
Figure 12-3 Alarm indication display
Figure 12-4 Alarm description display
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