Samsung SGH-S300 User manual

SGH-S300
SERVICE
Manual
GSM TELEPHO NE C O N TEN TS
1. Specification
2. Exploded View s and Parts List
3. Ele c tric a l P a rts List
4. B lock Diagram s
5. PC B Diagram s
6. Flow Chart of Troubleshooting and
CircuitDiagram s
GS M TELEPH O N E

SAMSUNG Proprietary-Contents may change without notice
1. SGH-S300 Specification
1-1
GSM 900
Phase 1
EG SM 900
Phase 2
D C S1800
P hase 1 PC S1900
Freq. B and[M H z]
Uplink/Downlink
890~915
935~960
880~915
925~960
1710~1785
1805~1880
1850~1910
1930~1990
A R FC N range 1~124 0~124 &
975~1023 512~885 512~810
T x/R x spacing 45M H z 45M H z 95M H z 80M H z
M od. B it rate/
B it P e rio d
270.833kbps
3.692us
270.833kbps
3.692us
270.833kbps
3.692us
270.833kbps
3.692us
Tim e Slot
Period/Fram e Period
576.9us
4.615m s
576.9us
4.615m s
576.9us
4.615m s
576.9us
4.615m s
M odulation 0.3G M SK 0.3G M SK 0.3G M SK 0.3G M SK
MS Power 33dB m ~13dB m 33dB m ~5dB m 30dB m ~0dB m 30dB m ~0dB m
Pow er C lass 5pcl ~ 15pcl 5pcl ~ 19pcl 0pcl ~ 15pcl 0pcl ~ 15pcl
S e n sitiv ity -102dB m -102dB m -100dB m -100dB m
TD M A M ux 8 8 8 8
C ell R adius 35K m 35K m 2K m -
1. G S M G en eral S pecification

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1-2
SGH-S300 Specification
TXPower
control level GSM 900
533¡2dB m
631¡2dB m
729¡2dB m
827¡2dB m
925¡2dB m
10 23¡2dB m
11 21¡2dB m
12 19¡2dB m
13 17¡2dB m
14 15¡2dB m
15 13¡2dB m
16 11¡3dB m
17 9¡3dB m
18 7¡3dB m
19 5¡3dB m
TX Power
control level D C S1800
030¡3dB m
128¡3dB m
226¡3dB m
324¡3dB m
422¡3dB m
520¡3dB m
618¡3dB m
716¡3dB m
814¡3dB m
912¡4dB m
10 10¡4dB m
11 8¡4dB m
12 6¡4dB m
13 4¡4dB m
14 2¡5dB m
15 0¡5dB m
TX Power
con trol level PC S1900
030¡3dB m
128¡3dB m
226¡3dB m
324¡3dB m
422¡3dB m
520¡3dB m
618¡3dB m
716¡3dB m
814¡3dB m
912¡4dB m
10 10¡4dB m
11 8¡4dB m
12 6¡4dB m
13 4¡4dB m
14 2¡5dB m
15 0¡5dB m
2. G S M T X p ow er class

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6. SGH-S300 Flow Chart of Troubleshooting and CircuitDiagram s
6-1
1
.Baseband
1. P ow er O N
Check the current
consum tion m ore than
100m A
Check the
Vbat(battery+O)
Voltag e m o r e th an
3.3V
Dow nloader again
NO
Charge the Battery
NO
Check U 100 and C113
NO
YES
YES
YES
YES
'
Pow er O n' does not
work
C heck the pin
15 of U 100 ismore
than 2.8V
U100 pin 46,39
=2.8V
U 100 pin13
=1.8V
Check the clock signal
at
pin4 of U 801
Freq=13M H z ?
Vrms¡˘¡300m V ?
Vpp is around
900m V pp
Check the clock generation circuit
(re lated to O SC 801 and U 801)
NO
'
Pow er O n' does not
work
YES
END
YES
Check U 114 and C116
NO
Check U 112
NO

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6-2
SGH-S300 Flow Chart of Troubleshooting and CircuitDiagram s
2.Initial
3. Sim Part
Che ck the sign al a t the
pin28ofU100is
"H igh" w hen the phone
isbooton
Check the pin 22 of
U 100 is"High"
C heck U 100
NO
Check the U 700
NO
Check th e s o ld e re d s ta tu s o f
O SC801, R803, U 100
NO
YES
YES
YES
I
n itial F ailure
C heck the pin4 of
OSC801 isaround2.8V
C h ec k a nd re so lder LC D connector C N 200
ifthere is s olde r b ridh e be tw e en the p ins
EN D
YES
Check the SIM
co nn ec tor's (CN100)
connector's to S IM card
C he ck the circ uit relate d to
U 100
NO
r
esolder or change C N 100
NO
Che ck the related circuitof
C N 100
NO
YES
YES
YES
Phone can't a cce ss S IM ca rd
C he ck the circ uit a ro un d U 60 1 o utp ut
and voltag e sup ply c ircu itry
EN D
YES
Check the pin 1 of CN 100.
Voltage=3V?
C he ck the circu it aro un d C N 1 0 0 inp ut
circ u itry
C he ck the related circuitof
U 601 and U 100
NO

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SGH-S300 Flow Chart of Troubleshooting and CircuitDiagram s
6- 3
4. C harging Part
Check U 100
NO
Check the U 700
NO
Check the Q 101
NO
YES
YES
YES
Abn orm al c ha rg ing part
EN D
YES
Check the pin 17,18 of
CN302 VEXT is > 4V?
C heck the pin 2 of U 103
is"LOW"?
C heck the pin 3 of Q 101
is"LOW"?
C heck the pin 5 of U 102
is"3.2~ 4.2"?
Check if ICHRG is1V
(du ring ch arging ) an d
arou nd 1 80 m V (full
ch arging )
YES
Check the U 102
NO
Resolder or change R 111
NO

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6-4
SGH-S300 Flow Chart of Troubleshooting and CircuitDiagram s
5.M icrophone Part
6. Speaker P art
Check the reference
voltage on m ic path
C418 =2.5V
R e ass em blag e m icrophone
NO
r
esolder or change
C400,R 428,R 409,R 405,R 406)
NO
Check U 700
NO
YES
YES
Microphone does not w ork
EN D
YES
Che ck the asse m bled
sta tu s o f m icrop ho n e.
Ismicrophone ok?
R e solde r and ch e ck th e bo ard
to board connector
NO
Check U 601
NO
Cha ng e or re so lder
U 700, R201, R202
NO
YES
YES
YES
Speaker does not w ork
EN D
C heck the connection
statu s sp k to C N 20 0
Check the PIN 1 of
U402='High' ?
Check U700,R201,R202
Is s pe ak er o k?
YES
Change Speaker
NO

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SGH-S300 Flow Chart of Troubleshooting and CircuitDiagram s
6- 5
7.Back Light
END
Select backlight "O N " m ode
NO
Check the U 601
NO
YES
YES
YES
Back light does not w ork
YES
Back lig h t "O N " m o d e in
the m eue?
Check the PIN 3 of
200-1 = 2.8V ?
C heck the connection
fro m C N 2 0 2 to L C D
Module
YES
Rep lace FPCB CONNECTOR
NO
Cha ng e L C D M o du le
NO
Ch eck th e so ld ere d sta tus of EL pad
LCD backlight on?

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6-6
SGH-S300 Flow Chart of Troubleshooting and CircuitDiagram s
8.Alert T on e
Check th e co nn ec tion
from C N 200-1 to LC D
Module
C he ck the circ uit relate d to
U 400,U 401
NO
Change Speaker
NO
Cha ng e L C D M o du le
NO
YES
YES
Abn orm al A lert tone
END
YES
Check the P IN 17, 18 of
CN200-1
Is th ere alert w ave?
A lert isok?
A lert ton e O n by p ush ing the key
*# 02 8 9#

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SGH-S300 Flow Chart of Troubleshooting and CircuitDiagram s
6- 7
2
.RF
1. G S M R eceiver
CONTINUOS RX ON
RF IN PU T : 62CH
Cell pow er : -50dB m
NORM AL CONDITION
ca tch the channel?
F1002 CHECK
pin13 ¡ˆ -65dB m ?
F1002 CHECK
pin1,2 ¡ˆ-65dB m ?
U901 CHECK
pin21,22 ¡ˆ-65dB m ?
CHECK
C1012,L 1015,C 1002 contact?
NO
CN1001
re s o lder or change
NO
F1002
res olde r o r cha ng e
NO
C1007,L 1001,C 1011
re s o lder or change
NO
YES
YES
YES
U901
pin 1 2,13 ¡ ˆ
20dBm ?
U 902 CH EC K
pin5,25,28 : 3V ?
U 902 CH EC K
pin7:13MHz?
OSC801 CHECK
pin3:13MHz?
V p-p : 950m V ?
OSC801 CHECK
pin4:clean
3V ?
U901 CHECK
pin14,23,26,32 :
3V ?
U 901 Pin3,4
V p-p:240m V ? U900 CHECK
pin 6 ,20 : 2.8V ?
U 901 Pin1,2
V p-p:250m V ?
U 900
Pin 2 ,3 ,4 ,5
V p-p:100m V ?
U100,PIN 39,C116
ch ec k o r res olde r
U902
change or resolde r
C808, R805
re solde r
OSC801
ch an ge
U100,PIN 46,C114
res olde r o r cha ng e
U900
res olde r o r cha ng e
L1006,C 1015,C 1019
re s o lder or change
NONO
NO
NO NO
NO
NO
NO
NO
NO
YES
YES YES
YES YES YES
YES
YES
YES
YES
YES

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6-8
SGH-S300 Flow Chart of Troubleshooting and CircuitDiagram s
2.DCS Receiver
CONTINUOS RX ON
RF INPUT :698CH
Cell pow er : -50dB m
NORM AL CONDITION
c atch the ch an ne l?
F1002 C H EC K
pin13 ¡ˆ-65dB m ?
F1002 C H EC K
pin6 ¡ˆ -65dB m ?
U901 CHECK
pin17,18 ¡ˆ-65dB m ?
CHECK
C 1012,L1015,C1002 contact?
NO
CN 1001
reso lder or change
NO
F1002
re s o lder or change
NO
C1014,C 1017,L1002
re s o lder or change
NO
YES
YES
YES
U90 1
pin 12,13 ¡ˆ
20dB m ?
U902 CHECK
pin5 ,25 ,28 :3V?
U 902 CH EC K
pin7:13MHz?
O SC801 CH E CK
pin 3 : 13 M H z ?
V p-p : 950m V ?
OSC801 CHECK
pin 4 : clean 3 V ?
U901 CHECK
pin14,23,26,32 :
3V ?
U 9 01 P in3 ,4
V p-p:240m V ? U 900 CH EC K
pin 6 ,20 : 2.8V ?
U 9 01 P in1 ,2
V p-p:250m V ?
U 900 Pin2,3,4,5
V p-p:100m V ?
U 100, PIN 39, C116
check or resolder
U 902
ch ang e or re so lder
C 808, R805
res olde r
O SC801
ch an ge
U 100, PIN 46, C114
re s o lder or change
U 900
re s o lder or change
L1006,C 1015,C 1019
reso lder or change
NONO
NO
NO NO
NO
NO
NO
NO
NO
YES
YES YES
YES YES YES
YES
YES
YES
YES
YES

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SGH-S300 Flow Chart of Troubleshooting and CircuitDiagram s
6- 9
3. P C S R eceiver
CONTINUOS RX ON
RF INPUT :698CH
Cell pow er : -50dB m
N ORM AL CONDITION
catc h th e c ha nn el?
F1002 C H EC K
pin13 ¡ˆ -65dBm ?
F1002 C H EC K
pin6 ¡ˆ-65dB m ?
F1005 C H EC K
pin4,6 ¡ˆ -65dB m ?
U901 CHECK
pin17,18 ¡ˆ -65dBm ?
CHECK
C 1012,L1015,C 1002 contact?
NO
CN1001
re s o lder or change
NO
F1002
re s o lder or change
NO
F1005
re s o lder or change
NO
L1006,C 1015,C1019
res olde r o r cha ng e
NO
YES
YES
YES
YES
U901
pin 1 2,13 ¡ ˆ
U 902 CH EC K
pin5,25,28 : 3V ?
U902 CHECK
pin 7 : 13 M H z?
OSC 801
CHECK
pin3:13MHz?
OSC801
CHECK
pin4:clean
U 901 CH EC K
pin14,23,26,32 :
U 901 Pin3,4
V p-p:240m V ? U900 CHECK
pin 6 ,20 : 2.8V ?
U 901 Pin1,2
V p-p:250m V ?
U900
Pin2,3,4,5
U 100, PIN 39, C116
check or resolder
U 902
ch ang e or re so lder
C 808, R805
res olde r
O SC801
ch an ge
U 100, PIN 46, C114
re s o lder or change
U 900
re s o lder or change
L1006,C 1015,C 1019
reso lder or change
NONO
NO
NO NO
NO
NO
NO
NO
NO
YES
YES YES
YES
YES YES
YES
YES
YES
YES
YES

SAMSUNG Proprietary-Contents may change without notice
6-10
SGH-S300 Flow Chart of Troubleshooting and CircuitDiagram s
4.GSM Transm itter
F1002 pin 13
about2~3dBm?
F1002
pin11:2.8V
U 1001 pin9
pin 3~ 4dBm ?
U 700,U 701
che ck & ch ang e
F1002
che ck & ch ang e
CN 1001, C 1012
che ck & ch ang e
U 1001
pin 4 : 3.7 V ?
BATTERY,U100
ch ec k & ch an ge
U 1001
pin2:1.2V
U 1001pin2:0
V and pin3:3V
U 1001pin6:
1.2V?
U 1001 pin7
: -5dBm?
U 1001
change & resolder
U700
ch ec k & ch an ge
U901
pin1 4 ,23,26,32
2.8V ?
U901
pin9 ,10,12,13:
-20dB m ?
U 902
pin 7 13M H z
V p-p :950m V
U902
pin9,10,11,13
3V ?
U 901
ch ang e or
res olde r
U901
pin5 ,6,7,8
1.7 V
U 1001
che ck & ch ang e
U700
ch an g e
U 100 pin46,C114
change or
reso lder
U700
ch ec k & ch an ge
U 100 pin39,c116
ch ang e or
res olde r
OSC 801
pin 3 :13M H z?
Vp-p :950mV
OSC 801
pin4:3V ?
U 902
ch ang e or
res olde r
U 901
pin5,25,28
3V ?
U 100 pin39,c116
change or
reso lder
OSC 801
change or
reso lder
NONO
NO
NO
NO
NO
NO
NO
NO
NO NO
NO NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES YES
YES
YES
YES
YES
CONTINUS TX ON
CONDITION
MSTX level 19
CH : 62
RB W : 100K H z
VBW :100KHz
SPA N : 10M H z
REF LEV . : 10dB m
ATT. :20dB

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SGH-S300 Flow Chart of Troubleshooting and CircuitDiagram s
6- 11
5.DCS Transmitter
F1002 pin13
about 2~3 dBm?
F1002
pin9:2.8V?
U 1001 pin11
pin 3~ 4dBm ?
U 700,U 701
ch ec k & ch an ge
F 1002
c he ck & cha ng e
CN1001,C1012
ch ec k & ch an ge
U 1001
pin 4 : 3.7 V ?
BATTERY, U100
ch ec k & ch an ge
U 1001
pin5:3V?
U 1001
pin2,3:3V ?
U 1001
pin 6 : 1.2 V ?
U 1001 pin 1
about : -5dB m ?
U 1001
ch ang e & re solde r
U700
ch ec k & ch an ge
U901
pin14,23,26,32 :
2.8V ?
U901
pin9 ,10,12,13 :
-20dB m ?
U902
pin7:13MHz?
Vp-p :950mV
U902
pin9,10,11,13 :
3V ?
U901
ch an ge o r reso lder
U901
pin5 ,6,7,8:
1.7V :
U 1001
ch ec k & ch an ge
U 700
cha ng e
U100 pin46,C 114
ch an ge o r reso lder
U700
ch ec k & ch an ge
U 100 pin39,c116
ch ang e or re so lder
OSC 801
pin3:13MHz?
Vp-p :950mV
O SC801
pin4:3V ?
U902
c han g e o r re solde r
U901
pin5 ,25,28 :
3V ?
U 100 pin39,c116
ch ang e or re so lder
O SC801
ch ang e or re so lder
NONO
NO
NO
NO
NO
NO
NO
NO
NO NO
NO NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES YES
YES
YES
YES
YES
CONTINU S TX ON CONDITION
MSTX level 12
CH : 698
RB W : 100K H z
VBW : 100KHz
SPA N : 10M H z
RE F LEV . : 10dB m
ATT. :20dB

SAMSUNG Proprietary-Contents may change without notice
6-12
SGH-S300 Flow Chart of Troubleshooting and CircuitDiagram s
6.PCS Transm itter
F1002 pin13
about 2~ 3 dB m ?
F1002
pin 9 : 2.8 V ?
U 1001 pin11
pin 3~ 4dBm ?
U700,U702
check & change
F1002
c he ck & ch ang e
C N 1001
c he ck & ch ang e
U 1001
pin4:3.7V?
BATTERY,U 100
c he ck & ch ang e
U 1001
pin5:3V?
U 1001
pin 2,3 :3 V?
U 1001
pin6:1.2V?
U 1001 pin 1
about : -5dBm ?
U 1001
ch ang e & res olde r
U700
c he ck & ch ang e
U 901
pin1 4 ,23,26,32 :
2.8V ?
U901
pin9 ,10,12,13 :
-20dB m ?
U 902
pin7:13MHz?
V p-p : 950m V
U902
pin9 ,10,11,13 :
3V ?
U 901
ch an ge or reso lder
U 901
pin5,6,7,8:
1.7V :
U1001
check & change
U700
change
U 100 pin46,C114
ch an g e o r re solde r
U700
ch ec k & ch an ge
U 100 pin39,c116
change or resolder
OSC801
pin 3 :13MHz?
V p-p : 950m V
OSC801
pin4:3V ?
U 902
ch an ge o r reso lder
U 901
pin5 ,25,28 :
3V ?
U 100 pin39,c116
change or resolder
O SC801
change or resolder
NONO
NO
NO
NO
NO
NO
NO
NO
NO NO
NO NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES YES
YES
YES
YES
YES
CONTINUS TX ON CONDITION
MS T X lev el 12
CH : 698
RB W : 100K H z
VBW :100KH z
SPA N : 10M H z
REF LEV.: 10dBm
ATT.: 20dB

SAMSUNG Proprietary-Contents may change without notice
SGH-S300 Flow Chart of Trouble shooting and CircuitDiagram s
6-13
C
56
3
4
B
67 8
1 78
D
2
2
Changed by Date Changed
PWR_SW1
MFG ENGR CHK
5
Engineer
B
R&D CHK
Drawn by
E
DOC CTRL CHK
QA CHK
E
Drawing Number
4
TITLE:
COMPANY NAME
Address
POWER
Size
D
REV Sheeto f
F
City
user12 2002.11.13 6:01:19 pm
SEOYH
SEOYH
A
11 0
SGH-S300
A3
F
1
3
A
C
Time Changed
2.2UF
C115
VBA T
2.2UF
C114 C101
2.2UF
C124
100NF
VOSC
47PF
C102
R100
1.2K
VRTC
100PF
C118
VBA T
TH1X5
C128
1UF
100NF
C104
0
C107
33PF
R106
2.2UF
100NF
C125
R101
C111
1
3
2
0
2
5
6
3
1
4
Q100
R111
U103
C126
10UF
10V
0
C109 47NF
VCCB
C108
100NF
100NF
C119
C105
2.2UF
C106
33PF
VCC_1.8A
VBA T
R112
47K,1%
2.2UF
C116 C117
2.2UF
R113
3K
VSENSE
VPA C
DRIVE
6
GND
2
1 ISENSE
PROG
43 VCC
5
10V
U102
2
NE
G
1
PO
S
C127
10UF
VSIM
60
18
_CS
51
_RESET_I
27
28 _RESET_O
33
_RTC_ALM
M1
VLDO_1 13
VLDO_2 15
46
VLDO_3
VLDO_4 44
VLDO_5 39
VLDO_7
52
35
VREF
12
VRTC
5
VDDQ
4
VEXT
VIB_DRV
8
VL4S_A 43
42
VL4S_B
38
VL5S_A
VL5S_B
37
VLDO_6 49
6
VBAT
14
VDD12
VDD3 47
45
VDD4 40
VDD5 48
VDD6
VDD7 53
VDDCP
58
16 SDI
SIM_CLK
62
63 SIM_IO
61 SIM_RST
UC_CLK
65
64 UC_IO
66 UC_RST
VACC
7
LED_DRV
11
PSW1BUF
30
31
PSW2BUF
PWR_KEEP
32
50 PWR_SW2
RING_DRV
9
19
RING_PWM
17 SCLK
GND
70
71
GND
GND
72
36
GNDA
GNDA
55
GNDCP
56
10
GNDD1
GNDQ
41
21 EN_4/EN_4S
EN_5
22
EN_5S
23
24 EN_6
EN_7
25
26 EN_R
67 EOR_ACC
69
GND
3
CFET_DRV
CHG_DET
29
CHG_STAT1
2
57 CPCN
59 CPCP
CREF
34
1
CHG_STAT0
EN_3
20
U100
ACC_ALM
68
BAT_TEMP
54
390K
R110
330K
C112
2.2UF
R102
D100
3
1
2
2.2UF
C120
C113
2.2UF
2.4
VRF VCCA
5
6
4
R103
Q101
3
1
2
4
REF_BYP
C103
33PF
U101
EN 3
2
GND
1
IN
5
OUT
VCCD VRTC
TP101
5 5
6
6
7
GG
89
GG
10
CN100
11
22
33 4 4
C123
2.2UF
VBA T
CHG_ON ICHRG
TA_VEXT
TA_VEXT
VIB_EN
LCDVIB_EN
CHG_DET
RESET_INT
PWR_ON
JIG_ON
RTCALARM
EN_VRF
EN_VPAC
XOENA
UP_SDI
UP_SCLK
UP_CS
PWR_KEEP
TA_VEXT
KEY_ROW(0)
KEY_COL(2)
BACKLIGHT
RST
VREF
SIMRST
SIMCLK
SIMDATA

SAMSUNG Proprietary-Contents may change without notice
SGH-S300 Flow Chart of Trouble shooting and CircuitDiagram s
6-14
A
Sheet
Time Changed
2
F
DOC CTRL CHK
D
1
D
C
A
3
REV
1 54
E
7
of
Size
Engineer
E
F
Changed by
MFG ENGR CHK
6
2
SGH-S300
A3
8
EMI FILTER
Date Changed
8
TITLE:
COMPANY NAME
5
3
6
Address
JTAG CON
KEY
C
LCD CONNECTOR
2
IRDA
City
BB
4
R&D CHK
QA CHK
7
Drawing Number
Drawn by
KEYPAD
3
12
SEOYH
SEOYH
6:01:42 pm
2002.11.13
user12 10
47
R227
47
R228
47
R229
47
R230
2
ZD209
2
KEYPAD
12
KEYPAD
RIGHT
1
1I1 I22
KEYPAD
1
12
7
OUT
OUT 8
8
KEYPAD
12
DOW N
KEY-TACT3
9
GG
10
IN
1
IN
2
3 IN
4 IN
OUT 5
6
OUT
100NF
C208
F203
T6
VBA T
T4
T5
T2
T3
T1
180
180
R21
7
2
R21
4
KEYPAD
*
1
STO
KEYPAD
12
ZD205
IN
3
IN
4
5
OUT
OUT
6
OUT
7
8
OUT
F204
G
91 0
G
1 IN
2 IN
IN
4 IN
OUT
5
6
OUT
7
OUT
OUT
8
F201
9
GG
10
IN
1
IN
2
3
R20
4
180
100PF
C207
LED20
2
180
R21
3
C205
330NF
180
R20
5
R200
0
6
KEYPAD
12
LED20
3
180
R21
1
VBA T
LED21
1
R223
LED21
4
R222
47
C206
100NF
47
R21
6
180
ZD208
ZD207
U20 0
34 5
12
R20
6
180
I
KEY-TACT3
1
I1 I22
LED20
1
2 IN
IN
3
IN
4
5
OUT
6
OUT
OUT
7
8
OUT
F200
G
91 0
G
1 IN
ZD206
180
R20
3
R21
0
180
LEDC
4
RXD
SD
5
TXD
3
6 VCC
12
LED200
7 GND
LEDA
1
2
KEYPAD
LEFT
12
KEYPAD
PW R
KEYPAD
5
12
C209
100PF
C213
100PF
100PF
C212C211
100PF
100PF
C210
SEND
KEYPAD
12
ZD210
KEYPAD-5PHI
MENU
12
ZD201
ZD204
4
KEYPAD
12
0
R202
12
R201
R225
47
R226
R224
47
VCCD
47
ZD211
KEYPAD
9
12
180
R20
7
9 9
KEYPAD
7
12
33
33
34 34
4
4
5 5
6
6
7 7
8
8
25
25
26 26
27
27
28 28
29
29
3 3
30 30
31
31
32 32
19
19
2
2
20 20
21
21
22 22
23
23
24 24 11
11
12 12
13
13
14 14
15 15
16
16
17 1718 18
CN200
1 1
10
10
LED20
5
LED20
9
ZD203
LED20
8
34 5
12
U20 1
KEY-TACT3
SHARP
I1 12 I2
100PF
C1046
12
IN
4 IN
OUT 5
OUT 6
OUT 7
OUT 8
CLEAR
KEYPAD
F202
9
GG
10
IN
1
2 IN
3
VCCD
68
R221
180
ZD202
0
KEYPAD
12
R20
8
R231
LED21
2
47
C200
LED21
5
KEY-TACT3
UP
I1 1 2 I 2
33NF
LED20
6
LED20
4
1UF
C204
VBA T
CP_TMS
CP_TCK
CP_TDO
IRDA_EN
IRDA_RX
IRDA_TX
CP_WEN
KEY_COL(0)
KEY_COL(1)
KEY_COL(0:4)
KEY_ROW(0)
KEY_ROW(1)
KEY_COL(4)
KEY_COL(2)
KEY_COL(3)
KEY_ROW(3)
PWR_ON
MSPK+
AOUTAP
SPK1N
BACKLIGHT
RESET_INT
CP_TDI
LED_EN
D(4)_FO
D(6)_FO
RED_LED
EL_EN
D(0)_FO
D(2)_FO
GREEN_LED
BLUE_LED
KEY_ROW(4)
KEY_ROW(2)
MSPK-
GLCD_EN_FO
CP_WEN_FO
CLCD_EN_FO
CP_WEN_FO
GLCD_EN_FO
A(2)_FO
D(7)_FO
D(7)_FO
D(5)_FO
D(3)_FO
D(1)_FO
D(6)_FO
D(4)_FO
D(2)_FO
D(0)_FO
RST
EL_ENEL_EN
LED_ENLED_EN
LCDVIB_EN
LCDVIB_EN
LCDVIB_EN
D(8)_FO
D(10)_FO
D(12)_FO
D(14)_FO
D(9)_FO
D(11)_FO
D(13)_FO
D(15)_FO D(9)_FO
D(11)_FO
D(13)_FO
D(15)_FO
CLCD_EN_FO
A(2)_FOD(8)
D(10)
D(12)
D(14)
D(9)
D(11)
D(13)
D(15)
D(3)
D(1)
KEY_ROW(0:4)
D(8)_FO
D(10)_FO
D(12)_FO
D(14)_FO
D(3)_FO
D(1)_FO
D(5)_FO
D(2)
D(4)
D(6)
A(2)
D(7)
D(5)
CP_WEN
D(0)
GLCD_EN
CLCD_EN

SAMSUNG Proprietary-Contents may change without notice
SGH-S300 Flow Chart of Trouble shooting and CircuitDiagram s
6-15
COMPANY NAME
Address
of
D
E
7
DEBUG_TXD
61
F
7
DEBUG_DSR
D
C
VEXT
B
A
B
83
GND
Drawn by
R&D CHK
DOC CTRL CHK
VTEST
Size
TITLE:
Changed by Date Changed
F
A
C
DEBUG_RXD
5
SDS_RXD
REV
1 62
BP_VF
VBATT
City
A3
DEBUG_DTR
VEXT
DEBUG_RI
VCCD
JIG_ON
DEBUG_DCD
DEBUG_RTS
SDS_TXD
DLC_DETECT
DEBUG_CTS
I/F CONNECTOR
MFG ENGR CHK
34
GND
GND
CF
GND
Drawing Number Sheet QA CHKTime Changed
Engineer
2
4
8
E
5
GND
VBA T
user12 2002.11.13 6:02:03 pm
SEOYH
SEOYH
31 0
SGH-S300
7
8
12
13
24
10
18
2
3
1KR309
47K
VCCD
14
R305
R307
23
D300
1K
1K
ZD302
R308
21
ZD300
15
20
16
17
ZD311
ZD303
ZD310ZD309
ZD313 ZD315
6
19
ZD318ZD317ZD312 ZD316ZD319
11
ZD314
100NF
CN302-1
1
C302
VCCD
4
R399 0
47K
R306
22
5
1KR310
9
DEBUG_DCD
1KR303
SDS_RXD
JIG_ON
SDS_TXD
DEBUG_RXD
DEBUG_TXD
BP_VF
TA_VEXT
DEBUG_CTS
DEBUG_RTS
DEBUG_DTR
DLC_DETECT
DEBUG_DSR
DEBUG_RI

SAMSUNG Proprietary-Contents may change without notice
SGH-S300 Flow Chart of Trouble shooting and CircuitDiagram s
6-16
5
3
A
E
5
B
DOC CTRL CHK
A
Drawn by
E
City
AUDIO
F
user12 2002.11.13 6:02:25 pm
SEOYH
SEOYH
EAR_SPK_P
41 0
SGH-S300
A3
QA CHKD rawing Number
D
JACK_IN
EAR_MIC_P
3412 8
F
Changed by
Engineer
of
Size
Sheet
Date Changed Time Changed
D
6
MFG ENGR CHK
REV
C
R&D CHK
7
1
B
C
TITLE:
COMPANY NAME
4
Address
2 67 8
R405
8.2K
100K
/CS
29
3
/IRQ
/RD
31
/RST
4
28
/WR
R425
PLLC
6
17
SPOUT
1
SPOUT
2
18
15
SPVDD
SPVSS
16
7
VD
D
9
VREF
VSS
8
13
EQ2
EQ3
14
HPOUT-L/MONO 10
11
HPOUT-R
IOVDD
32
LED
2
19
MT
R
5
NC
26
D1
25
D2
D3
24 23
D4
D5
22
D6
21
D7
20
EQ1
12
U401
30 A0
1
CLKI
D0
27
33PF
C451
100PF
C407
0
R499
VBA T
C461
100PF
C455
33UF
C409
10PF
330NF
C400
1UF
C417
56K
R406
R409
4.7K
47PF
C458
4.7K
R414
330K
680
R410
R424
NC
C490
10PF
R402
C491
56K
0
R421
1 3
2
MAIN_MIC
Q400
68PF
C413
4
B0
3
1
B1
GND
2
6
SEL
5
VCC
VCCA
VCCD
U402
A
ZD401
C410
4.7UF
6.3V
3.3K
R427
1K
R413
10PF
R426
0
C452
1 1
2
2
3 3
4
4
5 5
NC
CN401
R460
C416
TH1
R428
680
27PF
47PF
C420
33K
R404
33K
R407
C411
1NF
180PF
C459
VCCD
100N F
C408
10PF
C454
10V
10UF
C453
VCCD
150KR403
C418
10UF
10V
C414
C412
0
R420
8.2K
VCCA
C456
VCCA
C415
68PF
C457
150PF R422
91K
100NF
C402
C404
4.7UF
ZD405
C403
22NF
6.3V
ZD404
C401
270PF
VCCD
VCCA
200K
C460
100NF
R423
C450
10PF
TH2 TH3
100NF
C419
D(0)
D(1)
D(7)
D(6)
D(5)
D(4)
D(3)
D(2)
AOUTAN
AOUTBP
AOUTBN
YMU_IRQ
HP_R
AUDIO_OUT_SEL
SPK1N
JACK_IN
VIB_E
N
HP_L
MICOUT
MICIN
AUXOUT
AUXIN
EAR_SWITCH
YMU_LED
MSPK-
CLK13M_YMU
MSPK+
RST
CP_WEN
CP_OEN
A(0)
YMU_EN

SAMSUNG Proprietary-Contents may change without notice
SGH-S300 Flow Chart of Trouble shooting and CircuitDiagram s
6-17
73
8
B
45
2
C
Sheeto f
COMPANY NAME
F
Drawing Number
1
E
B
DD
Address
City
C
3
A
6 8
7
F
Engineer
Drawn by
54
SEOYH
SEOYH
6:02:44 pm
2002.11.13
user12 105
Date Changed
SGH-S300
A3
QA CHK
E
MEMORY
1
6
R&D CHK
DOC CTRL CHK
MFG ENGR CHK
2
Changed by Time Changed
Size
TITLE:
REV
A
NC
C599
R599
NC
F4 _S-UB
_S-WEB8
VCCD
C4 _F-RY/BY
_F-WE
C3
_F-WP
E3
_F1-CEH7
H10 _F2-CE
G10 _S-CE1
_S-LB
F3
_S-OEF5
S-VCC
D9
T1
D5
T2
D6
T3
E7
F6
T4
_F-OE
H9
D4 _F-RSP
H2
NC4
NC5 H3
NC6 A10
A11
NC7
NC8 A12
NC9 H11
S-A17
C6
S-CE2D8
D3
A9
GND
GND H8
NC1 A1
H12
NC10
NC11 1
2
NC12
A2
NC2
NC3 H1
F7
DQ9
G4
F-A17
E5 F-A19
A3 F-A20
C5 F-A21
F-VCC
D10
E4
F-VPP
GND
B7
DQ15
DQ2
E9
E10
DQ3
DQ4
C9
C10
DQ5
C8
DQ6
B10
DQ7
DQ8
F8
B6 A9
DQ0
F9
F10
DQ1
DQ10 E8
E6
DQ11
D7
DQ12
C7
DQ13
DQ14 B9
A16
A18G3
A2G8
G7 A3
A4
H5
H4 A5
G6
A6
G5 A7
A8B4
A0
G9
A1
A10B5
A4 A11
A12A8
A7 A13
A14
A6
A5 A15
B3
U501
H6
100NF
C518
R507
0
100K
R506
VCCD
VCCD
R505
NC
C519
100NF
VCC D
C513
100NF
C504
0R508
33NF
A(22)
A(11)
A(2)
A(1)
D(0)
D(1)
D(10)
D(11)
D(12)
D(13)
D(14)
D(15)
D(2)
D(3)
D(4)
D(5)
D(6)
D(7)
D(8)
D(9)
MEM_RST
A(21)
A(1:22)
A(19)
A(10)
A(9)
A(8)
A(7)
A(6)
A(5)
A(4)
A(3)
A(17)
A(16)
A(15)
A(14)
A(13)
A(12)
MEM_RST
RST
FLASH_RESET
D(0:15)
UPPER_BYTE
A(0)
CP_CSRAMEN
CP_CSROM2EN
CP_WEN
CP_OEN
CP_CSROMEN
A(18)
A(20)