Unomat/TRXhb/TRXhb
56
Self diagnosis
If any of the following readings is outside the indicated limits the unit will annunciate
MALFUNCTION.
Press key 9 during the self diagnosis procedure to show test data.
Action
Test
Limits of reading
Defect.board
Self diagnosis check points
Press 9
REF. 1.27V
> 122 < 133
processor
Press 9
REF. 0.0V
< 2
analogue
Press 9
C.J. COMP.INT
> 1100 < 1617
analogue/check connect
Press 9
mA IN ZERO
< 200
power
End self diagnosis check point ...
Continue to check the proper working of the battery conditions levels.
Battery condition levels:
Connect an adjustable power supply to the battery eliminator jack. Vary the voltage near to the
indicated levels and find the level of annunciation.
Press 9
Battery levels check for alkaline
Normal
> 4.5 V
Start-up
< 4.5 V > 3.9 V
Low
< 3.9 V > 3.2 V
Replace
< 3.2 V
Press 9
Battery levels check for NiCd
Normal
> 5.0 V
Start
< 5.0 V > 4.8 V
Low
< 4.8 V > 4.0 V
Charge
< 4.0 V
End battery condition levels
Press 9 Unit comes back into normal operation mode.
