Nokia 2600 服务手册
ISSUE 1 09/2004
COMPANY CONFIDENTIAL
13
Copyright © 2004 Nokia. All Rights Reserved.
RH-59/60
Nokia Customer Care
■
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”.
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”.
Figure 6:SIM troubleshooting
Figure 7:Signal diagram
Check for SIM voltage during power-up
Ch1 : VSIM
Ch2 : RESET
Ch2 : RESET
Ch3 : CLOCK
Ch4 : DATA
Ch4 : DATA
Display shows :
"Insert SIM Card"
Check :
X387, R386, PWB.
Else defective D200*
X387
Verify that phone checks for
1,8V-SIM, and then 3V-SIM
during power-up.
(See illustration below)
Yes
No
Yes
SIM Interface OK