Материал: Manual E530_1
SGH-E530 Flow Chart of Troubleshooting
2-1-7. LCD PART
LCD back light dose not work
Check the LCD CONNECTOR (CN501)
NO 
Check the LCD when folder opened
YES
It confirm LCD CN3 and |
over 3V |
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Battery linking situation. |
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No |
Check the voltage of LCD |
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IC7 pin#1, 12, 14, 15, 16 |
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under 3V
Change LCD IC7
Check the LCD CN4 connect.
Check the SUB LCD |
No |
Check the VCC EL |
Yes |
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when folder closed |
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Volt over the 16V? |
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YES |
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NO |
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Change the LCD IC9 |
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END
2-13
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
SGH-E530 Flow Chart of Troubleshooting
2-2.RF
2-1-1. EGSM RX
NORMAL CONDITION catch the channel?
YES
U103 pin#8 ≥ -65dBm
YES
pin#2,3 of U103 ≥ -65dBm
YES
pin#20, 21
of U102 ≥ 65dBm
YES
U102 pin#9, 32 = 2.8V
YES
U102 CHECK pin#8 = 13MHz Vp-p = 950mV
YES
pin#1,2,3,28 of U102 Vp-p = 120mV ?
YES
CHECK U401
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CONTINUOUS RX ON |
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RF INPUT : 62CH |
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AMP |
: -50dBm |
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NO |
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Check ANT1,C143 |
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ANT2, L101 contact |
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NO
Check C103, CN100
NO
Check U103
NO |
Check |
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C106,C109,L103 |
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NO |
Check |
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U401 pin#A13, #C421 |
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NO
Check OSC100
NO
Check U102
2-14
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
SGH-E530 Flow Chart of Troubleshooting
2-1-2. DCS RX
NORMAL CONDITION catch the channel?
YES
pin#8 of U103 ≥ -65dBm
YES
pin#4,5 of U103 ≥ -65dBm
YES
pin#18,19 of U102 ≥ -65dBm
YES
pin#9,32 of U102 = 2.8V
YES
At U102 pin#8 = 13MHz Vp-p = 950mV
YES
pin#1,2,3,28 Vp-p of U102 = 120mV
YES
Check U401
NO
NO
NO
NO
NO
NO
NO
CONTINUOUS RX ON
RF INPUT : 698CH
AMP : -50dBm
CHECK ANT1,C143
ANT2, L101 contact ?
Check C103,CN100
Check U103
Check C113, C117, L106
Check C421, pinA13 of U401
Check OSC100
Check U102
2-15
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
SGH-E530 Flow Chart of Troubleshooting
2-1-3. EGSM TX
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U103 pin#13 |
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NO |
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U103 |
NO |
U401 |
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= about 2~3 |
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pin#1 = 2.8V |
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check & change |
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YES |
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U101 pin#11= |
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C103,CN100 |
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NO |
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about 4~5dBm? |
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check&change |
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YES |
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U103 |
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check & change |
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NO |
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U101 |
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BATTERY |
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pin#6,17=3.7V |
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check & change |
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YES |
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U101 |
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NO |
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U401 |
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pin#20 = 1.6V |
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check |
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NO |
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YES |
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U101 pin#4 |
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about =-5dBm |
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YES |
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NO |
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U101 |
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pin#18 = 3V |
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YES |
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U101 |
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U401 |
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change or resolder |
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check |
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CONTINOUS TX ON CONDITION |
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TX POWER DAC : 600 CODE APPLIED |
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CH |
: 62 |
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RBW |
: 100KHz |
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VBW |
: 100KHz |
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SPAN |
: 10MHz |
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REF LEV : 10dBm |
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ATT |
: 20dB |
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NO |
U102 |
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pin#9,32 =2.8V |
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YES |
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U401 pinA13,C421 change or resolder
NO
U401 change or resolder
U102 |
NO |
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OSC100 |
pin#8 = 13MHz |
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Vp-p = 950mV |
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change or resolder |
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YES |
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U102
pin#4,5,6,7
=100mV
YES
U102 change or resolder
2-16
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
SGH-E530 Flow Chart of Troubleshooting
2-1-4. DCS TX
|
U103 pin#11 |
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NO |
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U103 |
NO |
U401 |
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= about 2~3 |
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pin#6 = 2.8V |
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check & change |
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dBm |
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YES |
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YES |
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U101 pin#15 |
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C103,CN100 |
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= about |
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check&change |
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NO |
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4~5dBm |
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YES |
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U103 |
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check & change |
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U101 |
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NO |
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BATTERY |
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pin#6,17= |
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3.7V |
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check & change |
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U101 |
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NO |
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U401 |
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pin#20 = 1.6V |
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check |
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NO |
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YES |
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U101 pin#3 |
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about =-5dBm |
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YES |
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U101 |
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NO |
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pin18=3V |
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U101 |
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U401 |
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change or resolder |
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check |
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NO |
U102 |
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pin#9,32 =2.8V |
U401 pinA13,C421 change or resolder
YES
U102 |
NO |
OSC100 |
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pin8 = 13MHz |
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Vp-p = 950mV |
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change or resolder |
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YES |
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CONTINOUS TX ON CONDITION |
||
TX POWER DAC : 600 CODE APPLIED |
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CH |
: 62 |
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RBW |
: 100KHz |
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VBW |
: 100KHz |
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SPAN |
: 10MHz |
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REF LEV : 10dBm |
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ATT |
: 20dB |
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NO |
U102 |
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pin#4,5,6,7 |
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=100mV |
YES
U401
change or resolder U102 change or resolder
2-17
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization