User Guide

PAMS
Technical Documentation
NME–3
Troubleshooting
Page 62
Issue 1 10/99
SIM fault
Check 3V power supply at
C400 (limits 2.8V to 3.2V)
Check 3V power
supply at C401 (lim-
its 2.8V to 3.2V)
No
Yes
No
Change V401
Check voltage at basis of
V400 (limits 0V to 0.5V)
Check 5V power
supply at C400 (lim-
its 4.8V to 5.2V)
No
Yes
Change V400
Check voltage at basis of
V400 (limits 0V to 0.5V)
Yes
Change V400
for 3V
for 5V
Check voltage of gate V401
limits 0V to 0.5V
Change MCU D300
No
Yes
Change MCU D300
No
Yes
Change D400
Yes
Change MCU D300
By no reaction