Samsung Electronics
5-7
Troubleshooting
Phone can’t access SIM card
After power ON,
U400 pin 4 and 5 = ‘H’?
Is there any
opened-connection between
U400 and U408?
After Power
ON, Check SIMDATA Signal
on U400 pin 3 in a
few second
After SIM card
insert, Check for the SIM CLK
signal on U400 pin 1
After SIM card insert,
U400 pin 2 (RST) = ‘H’?
Check the circuit around U412
(Serial E
2
PROM) and data stored in it
END
Check the related of U402
Resolder the connection
between U400 and U408
Check continuity from
U408 pin 14 to U400 pin 3
Check the continuity from
U408 pin 10 to U400 pin 1
Check the continuity from
U408 pin 9 to U400 pin 2
SIM CARD PART
No
Yes
Yes
No
No
Yes
No
Yes
No
Yes
Summary of Contents for SGH 600
Page 2: ...Samsung Electronics Co Ltd ELECTRONICS ...
Page 6: ...1 4 Samsung Electronics General Description MEMO ...
Page 20: ...3 4 Samsung Electronics Specification MEMO ...
Page 40: ...7 8 Samsung Electronics Electrical Parts List MEMO ...
Page 48: ...8 8 Samsung Electronics Exploded View and its Parts List 8 9 Hands Free Kit Diagram ...
Page 49: ...Samsung Electronics 8 9 Exploded View and its Parts List 8 10 Boost Kit ...
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