Samsung GT-i9001 Service Manual page 69
Gsm telephone
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Also See for GT-i9001:
- Quick start manual (31 pages) ,
- User manual (152 pages) ,
- User manual (147 pages)
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Level 3 Repair
8-3-15. GSM1800, GSM1900 RX
NORMAL CONDITION
catch the channel?
Check L103 ≤ -65dBm ?
Check the Voltage at
C111 =2.8V
Check
L112,L113, L114,L115
≥ -65dBm ?
Check the voltage at
{C316 = 2.2V?}
{C319,C320,C322,C323,C3
26,C327,C330,C333=1.3V?
Check the freq. at
OSC500 : 19.2MHz ?
GSM1800/1900 Receiver is O.K?
END
NO
YES
NO
NO
YES
NO
YES
NO
}
YES
NO
YES
NO
YES
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CHECK soldered
RFS100, L103,L104,C112
resolder or change
U501
resolder or change
F100,L112,L113,L114,L115
resolder or change
U501
change or resolder
OSC500
resolder or change
U300
8-40
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