Samsung SGH-X810 Schematics TSHOO
9.
Flow Chart of Troubleshooting
9-1 BASEBAND
9-1-1. Power ON
'Power On' does not work
Yes
Check the current
consumption more
than 100mA
Yes
Check the VBAT
more than 3.3V
Yes
Check the
VLDO7_1.8V
of U300 is more than
1.8V
Yes
Check VCCD
,VCCD_1.5
of U304=1.5
Yes
No
No
No
No
Download again
Charge the Battery
①
Check U300 and C311
②
Check C331 of U304
③
Check VRF of
U300=2.8V
Yes
Check C139
Freq = 13MHz
Vp-p > 0.8V
Yes
Check the initial operation
Yes
END
9-1
No
No
Check U300
and C313
④
Check the clock C139
Flow Chart of Troubleshooting
9-2
Flow Chart of Troubleshooting
UUPP__RRSSTT
SSIIMM__IIOO
SSIIMM__RRSSTT
SSIIMM__CCLLKK
LLEEDD
DDRRVV
22__
LLEEDD11__DDRRVV
RRIINNGG__DDRRVV
VVIIBB__DDRRVV
VVLLDDOO__77
VVLLDDOO__66
VVLL55SS__BB
VVLL55SS__AA
VVLLDDOO__55
VVLL44SS__BB
VVLL44SS__AA
VVLLDDOO__44
VVLLDDOO__33
VVLLDDOO__22
VVLLDDOO__11
CCSSNN__PPSSCC
SSCCLLKK__PPSSCC
SSDDOO__PPSSCC
SSDDII__PPSSCC
CCHH__BBDDRRVV
CCHH__IISSEENN
CCHH__RREESS
AADDCC__AAUUXX22
AADDCC__AAUUXX11
UUPP__IIOO
VVSSIIMM
VVRRTTCC
VVAACCCC
VVEEXXTT
VVBBAATT
VVRREEFF
CCRREEFF
RR1100
PP1100
JJ1111
KK1111
KK1144
KK1122
HH1111
GG1122
GG113
FF1133
FF115
CC1122
AA1144
CC99
DD1100
BB1100
BB1111
AA1122
BB1122
AA1133
JJ1122
GG1111
FF1144
KK88
LL88
NN77
MM77
EE1144
EE1133
EE1111
FF1122
DD1144
DD1155
EE1100
AA1100
EE99
HH1100
5
CC331188
SSIIMMRRSSTT
SSI
IMMDDAATTAA
SSIIMM__IIOO
SSIIMM__RRSSTT
SSIIMM__CCLLKK
VVSSIIMM
KKEEYY__BBLL11
MMOOTT
DDCCSS__TTXX__EENN
GGSSMM__TTXX__EENN
RR330044
VVCCCCBB
CC331100
UUPP__
UUPP__SSCCLLKK
UUPP__SSDDOO
UUPP__SSDDII
3
VVLLDDOO77__11..88VV
VVBBAATT
CCSS
CC331111
VVCCCCAA
CC331122
RRTTCCAALLAARRMM
CC331133
RR333311
VVRRFF
CC331144
VVCCCCDD
VVLLDDOO__11..55VV
88
00
33
DD
ZZ
CC331155
UU330022
VVOO
22
VVSS11
GGNNDD
33
CC333300
VVCCCCBB
11..55VV
CC331166
VVRRTTCC
RR330000
11
BBAATT330000
22
VVCCCCDD
VVBBAATT
22
CC332299
CCCCDD__11..55VV
VV
FF330000
11
33
UU330044
11
22
33
VVIINN
GGNNDD
EENN
SSWW
FFBB
LL330022
55
44
CC333311
9-3
Flow Chart of Troubleshooting
9-2-2. Initial
Initial Failure
Check VCCD,
VCCD_1.8V of U300
"High" when the phone
is boot on`
Check
the VCCD_1.6V of
U304 is "High"
Yes
Yes
No
No
①
Chec k U300
②
Chec k U304
Yes
LCD display is O.K?
Yes
Sound is O.K?
Yes
END
No
No
③
Chec k SLC102 and LCD part
Chec k audio part
9-4
VVCCCCDD
Flow Chart of Troubleshooting
HHEERRAA__11..88
LLEEDD__VVOOUUTT
LLEEDD11
LLEEDD22
LLEEDD33
LLCCDD__DD((00))
LLCC
DD__DD
D__DD((44))
LLCCD
LLCCDD__DD((66
LLCCDD__DD((88))
LLCCDD__DD((110
LLCCDD__DD((1122))
LLCCDD__DD((1144))
RR110033
SSLLCC110022
11
22
11
22
33
33
44
44
55
55
66
66
77
7788
88
99
99
1100
1100
1111
1122
1111
1122
1133
1144
((22))
))
0))
CC115500
CC114488
CC114499
CC115511
CC115522
CC115533
15544
CC1
00
00
00
00
55
55
55
55
00
00
00
00
22
22
22
CC115555
VVRR111122
22
00
00
00
00
SS
SS
SS
SS
55
55
55
55
CC
CC
CC
CC
LL
LL
LL
LL
VV
VV
VV
VV
AA
AA
AA
AA
VVRR111155
VVRR111133
VVRR111144
1133
1144
1155
1166
1155
1166
1177
1188
1177
1188
1199
2200
1199
2200
2211
2211
2222
2222
2233
22332244
2244
2255
22552266
2266
2277
2288
2277
2288
2299
3300
2299
3300
3311
3311
CC117700
77
77
11
CC
CC116699
CC117711
CC114477
CC115566
RR113399
CC115577
CC115588
CC115599
CC116600
CC116611
CC116622
CC116633
LLCCDD__CCSS
FFLLAASSHH__RREESSEETT
LLCCDD__RRSS
LLCCDD__WWEENN
LLCCDD__DD((11))
LLCCDD__DD((33))
LLCCDD__DD((55))
LLCCDD__DD((77))
LLCCDD__DD((99))
LLCCDD__DD((1111))
LLCCDD__DD((1133))
LLCCDD__DD((1155))
9-5
Flow Chart of Troubleshooting
9-1-3. Sim Part
Phone can't access
SIM card
Check the pin 1 of
SIM300
Volt ag e = 3V
YES
NO
①
Check the circ uit related to
U300
Check the SIM
connec tor' s
(S IM30 0)
connec tor' s to SIM
card
YES
Check the circuit aroun d SIM300
input circuitry
YES
Check the circuit aroun d
U300 output
and voltage supply circuitry
YES
END
NO
NO
NO
②
resolder or change
SIM300
③
Check t he rela ted circuit of
SIM300
④
Check t he rela ted circuit of
U300
9-6
Flow Chart of Troubleshooting
SSIIMM330000
11
VVSSIIMM
SSIIMM__RRSSTT
SSIIMM__CCLLKK SSIIMM__IIOO
CC330066CC330044 CC330088CC330077CC330055
11
22
22
33
33
GGGG
1100
66
66
55
55
44
44
GG
GG
77
8899
9-7
Flow Chart of Troubleshooting
9-1-4. Charging Part
Abnormal c harging part
Yes
Battery Contact at
BTC402?
No
①
Battery Check BTC402
Yes
Charger input of
IFC401 ?
Yes
END
No
②
Check the IFC40 1
9-8
Flow Chart of Troubleshooting
JJIIGG__OONN
SSDDSS__TT
SSDDSS__RRXXDD
BBPP__VVFF
CCPP__TTDDOO
CCPP__TTDDII
CCPP__TTCCKK
CCPP__TTMMSS
DDLLCC__DDEETTEECCTT
UUSSBB__DD++
UUSSBB__DD--
VVLLDDOO77__11..88VV
RR442255
XXDD
RRSSTT
RR443355
66
VVBBAATT
11
00
00
44
DD
ZZ
RR442266
RR442277
RR442288
RR444466
RR442299
RR443300
RR443311
RR443322
RR443333
RR443344
66
55
00
00
44
44
DD
DD
ZZ
66
44
44
55
22
33
ZZDD441111
55
11
22
33
ZZDD441122
ZZ
UUSSBB__55VV
ZZDD441100
VVBBAATT
JJIIGG__OONN
SSDDSS__TTXXDD
SSDDSS__RRXXDD
TTRR__RRSSTT
CCPP__TTDDOO
CCPP__TTDDI
CCPP__TTCCKK
CCPP__
DDLLCC__DDEETTEECCTT
UUSSBB__VVBBUUSS
UUSSBB++
VVBBAATTTT
VVBBAATTTT
44
00
44
DD
ZZ
I
TTMM
SS
UUSSBB--
TTCC__EENN
IIFFCC440011
11
11
22
22
33
33
44
44
55
55
66
66
77
77
88
88
99
99
1100
1100
1111
1111
1122
1122
1133
1133
GGNNDD
1
144
1144
GGNNDD
1155
1155
1166
1166
1177
1177
1188
1188
1199
1199
2200
2200
2211
2211
2222
2222
2233
2233
2244
2244
GGNNDD
2255
2255
GGNNDD
2266
2266
GGNNDD
2277
2277
GGNNDD
2288
2288
CC444488
BBPP__VVFF
CC443322
VVBBAATTTT
BBPP__VVFF
TTDDZZ55..66ZZDD440011
CC443311
BBTTCC440022
11
11
22
22
33
33
44
44
9-9
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