RADIOMETER TCM3 - Page 40

2. TCM3
Error Codes, Continued
Soft Errors
(continued)
Hard Errors
TCM3 and TCM30 Service Manual
Same as for error 11.
Error Cause | Service Action
Code
4 No detection of change in pCO, _| Recalibrate. Replace the electrode
signal after READY. and then recalibrate
5 The electrode power dissipation | Raise the ambient temperature
has exceeded 600 mW for more _{ and recalibrate.
than 2 minutes due to too low
ambient temperature.
Defective electrode. Replace the electrode.
The table lists the error codes as. well as the possible causes and Service actions.
Error Cause Service Action
Code
10 Temperature error. Either higher | Change the electrode. If the
than 45.6 °C or lower than 5 °C. | electrode is OK, checkout and
adjust the monitor.
и Temperature difference between | Same as for error 10.
the two thermistors (E5277 and
E5280 only) exceeds 0.6 °C.
12 Parity error. Reset the microcomputer by
switching off and on the monitor.
if the error persists, replace the
Main PCB.
3 Microcomputer hardware error. Checkout and adjust the monitor.
If the error persists, replace the
Main PCB.
14 EPROM checksum error. Same as for error 12.
15 Software error. Same as for error 12.
16 Software deadlock. Same as for error 12.
99 Software version 5.6 only: Same as for error 10.