SAMSUNG SGH-E600 Service Manual Troubleshooting
2. SGH-E600/E608 Flow Chart of Troubleshooting and Circuit Diagrams
1.Baseband
1. Power ON
'Power On' does not
work
Check the current
consumtion more than
100mA
YES
Check the
Vbat(battery+O)
Voltage more than
3.3V
YES
Check the pin
11 of U100 is more
than 2.8V
YES
U100 pin 39
=2.8V
NO
NO
NO
NO
Downloader again
Charge the Battery
Check U100 and C108
Check U100 and C112
YES
U100 pin 9
=1.8V
YES
Checktheclocksignal
at
pin6 of OSC800
Freq=13MHz
Vrms°√300mV
Vpp is around
900mVpp
YES
'Power On' does not
work
END
NO
NO
Check C107
Check the clock generation circuit
(OSC800)
2-1
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SGH-E600/E608 Flow Chart of Troubleshooting and Circuit Diagrams
2. Initial
Initial Failure
Check the signal at the
pin19ofU100is
"High" when the phone
is boot on
YES
Check the pin 22 of
U100 is "High"
YES
Check the pin 4 of
OSC800 is around 2.8V
YES
Check and resolder LCD connector CN200
if there is solder bridhe between the pins
YES
NO
NO
NO
Check U100
Check the U700
Check the soldered status of
OSC800, L800, U100
3. Sim Part
END
Phone can't access SIM card
Check the pin 1 of CN100.
Voltage = 3V
YES
Check the SIM
connector's (CN100)
connector's to SIM card
YES
Check the circuit around CN100 input
circuitry
YES
Check the circuit around U600 output
and voltage supply circuitry
NO
NO
NO
NO
Check the circuit related to
resolder or change CN100
Check the related circuit of
Check the related circuit of
U100
CN100
U600 and U100
YES
END
2-2
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SGH-E600/E608 Flow Chart of Troubleshooting and Circuit Diagrams
1
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2-3
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SGH-E600/E608 Flow Chart of Troubleshooting and Circuit Diagrams
4. Charging Part
Abnormal charging part
Check the pin 17,18 of
CN300 VEXT is > 4V
YES
Check the pin 2 of Q103
is "LOW"
YES
Check the pin 3 of Q100
is "LOW"
YES
Check the pin 5 of U101
is "3.2~4.2V"
YES
Check if ICHRG is 1V
(during charging) and
around 180mV(full
charging)
YES
NO
NO
NO
NO
NO
Check U100
Check the U600
Check the Q100
Check the U101
Resolder or change R104
CHG_ON
END
Q100
6
5
3
TA_VEXT
2
1
VBA T
R10 6
3K
4
6
5
4 3
TA_VEXT
C117
10UF
10 V
PSC_RS T
U101
ISENSE
1
DRIVE
GN D
2
VSENS E
VC C
PROG
Q10 3
1
2
3
6
R105
47K,1%
5
4
2-4
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C116
10U F
10V
0 R104
ICHRG
5. Microphone Part
Microphone does not work
SGH-E600/E608 Flow Chart of Troubleshooting and Circuit Diagrams
Check the assembled
status of microphone.
YES
Check the reference
voltage on mic path
C412 = 2.5V
YES
Is microphone ok?
YES
END
NO
NO
NO
Reassemblage microphone
resolder or change
C406,R406,R408,R410,R412)
Check U700
2-5
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SGH-E600/E608 Flow Chart of Troubleshooting and Circuit Diagrams
0
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2-6
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