Sim Card Is Out Of Order - Nokia Mobile Phones NSE-5 Series Service Manual

PAMS
Technical Documentation

6. SIM card is out of order

The hardware of the SIM interface from MAD2Pr1 (D300) to the SIM
connector (X100) can be tested without SIM card.
When the power is switched on and if the BSI line (X102;1) is grounded by
resistor, all the used lines (VSIM, RST, CLK, DATA) rises up to 5 V four
times. Thus "Insert SIM card" faults can be found without SIM card.
The fault information "Card rejected" means that ATR message (the first
message is always sent from card to phone) is sent from card to phone
but the message is somehow corrupted, data signal levels are wrong etc.
or factory set values (stored to the EEPROM) are not correct.
Insert SIM card fault
Voltage < 1.5V on top of
R123 when BSI resistor is
connected
VSIM (C143), DATAO (C131),
SIMRSTO (C130) and SIMCLKO
(C129) lines rise up to 5V after
power on
SIMPWR (J321), SIMCardDet
(J325), SIMCardRst (J324),
SIMCLK (J323), SIMIOC (J322)
rise to 2.8V after power on
Faulty D300
If a 5V SIM card (or no SIM card) is used, the voltage will rise to 3Volts
and then 5Volts (the phone will try this 4 times).
Issue 1 07/99
No
Yes
No
Yes
No
Yes
Check X102, R115,
R123, C119
Check X100, R120,C143,
C116,C129,C130,C131
Faulty PCB, N100
Figure 12.
NSE–5
Troubleshooting
Page 15