Sim Related Faults; Insert Sim Card Fault - Nokia NHM-8NX Series Troubleshooting Instructions

NHM-8NX
Troubleshooting Instructions

SIM related faults

Insert SIM card fault

The hardware of the SIM interface from UEM (D200) to the SIM connector (X387) can be
tested without a SIM card. When the power is switched on the phone first check for a
1,8V SIM card and then a 3V SIM card. The phone will try this four times, whereafter it
will display "Insert SIM card".
Check for SIM voltage during power-up
Ch1 : VSIM
Ch2 : RESET
Page 12
Display shows :
"Insert SIM Card"
Yes
X387
Verify that phone checks for
No
1,8V-SIM, and then 3V-SIM
during power-up.
(See illustration below)
Yes
SIM Interface OK
Ch3 : CLOCK
Ch4 : DATA
ãNokia Corporation
PAMS Technical Documentation
Check :
X387, R386, PWB.
Else defective D200*
Issue 1 05/02