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DUAL BAND Mobile
ELECTRONICS
Cellular Phone
SGH-N300




SERVICE Manual



DUAL BAND Mobile Cellular Phone CONTENTS
1. Exploded Views and Parts List

2. PCB Diagrams

3. Electrical Parts List

4. Block Diagrams

5. Flow Chart of Troubleshooting
ELECTRONICS




Samsung Electronics Co.,Ltd.
Printed in Korea
06/2001 Rev 1.0
GH68-02097A
1. Exploded Views and Parts List
1-1 Main
1-2 Main Parts List
1-3 Travel Adapter
1-4 Travel Adapter Parts List
1-5 Ciger Light Adapter
1-6 Ciger Light Adapter Parts List
1-7 Test Jig
1-8 Earphone
1-9 Data Kit
1-10 Desk Top Charger

2. PCB Diagrams
2-1 Main Top
2-2 Main Bottom

3. Electrical Parts List
3-1 Main Parts List Top
3-2 Main Parts List Bottom

4. Block Diagrams
4-1 Main Base Band
4-2 Main RF

5. Flow Chart of Troubleshooting
5-1 Power ON
5-2 Initial
5-3 Charging Part
5-4 Sim Part
5-5 Microphone Part
5-6 Speaker Part
5-7 Key Data Input
5-8 Alert tone
5-9 Ring Indicator
5-10 Back Light
5-11 GSM Receiver
5-12 GSM Transmitter
5-13 DCS Receiver
5-14 DCS Transmitter
1. Exploded Views and Parts List

1-1 Main



1-3
1
1-2


1-4
4

1-5
1-1
1-6
1-8
1-7
5


6
8
7

2

2-1




2-2 9
10

12 11
13


14
15


16
17
18
3-2
3-3
19


20
3-1
3
21

3-4 3-5

22
23


24




1-1 Exploded Views and Parts List
1-2 Main Parts List


NO SEC CODE DESCRIPTION COLOR SVC Q`TY REMARKS
GH75-00757B FRONT-COVER ASSY SILVER 1
1-1 GH72-02228B FRONT-COVER SNA 1
1-2 GH75-00760B FLIP-COVER ASSY 1
1-3 GH72-02229B DUMMY-FRONT SNA 1
1 1-4 GH72-01851A REFLECTOR-LED SNA 1
1-5 GH74-01369A SPONGE-SPEAKER SNA 1
1-6 GH72-01203B WEB-KEY SNA 1
1-7 GH75-00350A HINGE-ASSY SNA 1
1-8 GH72-01852A WINDOW-LCD SNA 1
GH07-00070A LCD-ASSY 1
2 2-1 3003-001025 MIC 1
2-2 GH72-01856A SHIELD-FRONT SNA 1
GH75-00762A REAR-COVER ASSY D/GRAY 1
3-1 GH72-01855A REAR-COVER SNA 1
3-2 GH74-00466A TAPE-MOTOR SNA 1
3
3-3 GH73-00511A COVER-EARPHONE SNA 1
3-4 GH72-02364A SIM-COVER 1
3-5 GH72-01205A LOCKER-MAIN SNA 1
4 GH75-01076A VOLUME-KEY ASSY 1
5 GH71-10639A STRIP-FINGER 4
6 GH72-02230A KEY-PAD 1
7 GH73-00628A HOLDER-MIC 1
8 GH74-01329A SPONGE-STIFFER 1
9 GH74-01328A SPONGE-SPEAKER 1
10 3001-001192 SPEAKER 1
11 GH73-00348B HOLDER-BUZZER 1
12 6001-001285 SCREW M1.4*3 3
13 GH92-00981A PBA 1
14 GH73-00350A RUBBER-CONNECTOR 1
15 GH72-01858A SHIELD-R/F 1
16 GH31-00019A VIBRATION 1
17 GH71-00483A BRACKET-ANT 1
18 GH73-00079A CAP-MOBILE 1
19 GH42-00102A ANTENNA 1
20 6001-001345 SCREW M1.7*6 1
21 GH75-00540C LOGO-BADGE 1
22 6001-001148 SCREW M2*5 4
23 GH68-01777A LABEL-MAIN 1
24 GH43-00291A BATTERY-STD 1




Exploded Views and Parts List 1-2
1-3 Travel Adapter




1-4 Travel Adapter Parts List


TYPE SEC CODE REMARK
A GH44-00119C CHINA
B GH44-00119A EUROPE
C GH44-00119B UNITED KINGDOM
D Gh44-00119D AUSTRALIA




1-3 Exploded Views and Parts List
1-5 Ciger Light Adapter




1-6 Ciger Light Adapter Parts List


DESCRIPTION SEC CODE REMARK
Ciger Light Adapter GH44-00040A BLACK




Exploded Views and Parts List 1-4
1-7 Test Jig




TEST JIG GH80-10508A




TEST JIG CABLE GH39-00081A




RF JIG CABLE GH39-00002A



1-5 Exploded Views and Parts List
1-7-1 Test Jig




DC
POWER
SUPPLY


8922 or 8960
WIRELESS COMMUNICATION
TEST SET




RF JIG CABLE




TEST JIG CABLE
232 CABLE




Note PC




Exploded Views and Parts List 1-6
1-8 Earphone




EARPHONE GH59-00225A




1-9 Data Kit




DATA KIT GH39-30533A




1-7 Exploded Views and Parts List
1-10 Desk Top Charger




DESK TOP CHARGER GH44-00206A



Exploded Views and Parts List 1-8
2. PCB Diagrams

2-1 Main Top




PCB Diagrams & Schematic Diagrams 2-1
2-2 Main Bottom




PCB Diagrams & Schematic Diagrams 2-2
3. Electrical Parts List

3-1 Main Parts List Top


REFERENCE SEC CODE PART DESCRIPTION VENDOR PART NUMBER

1 AU101 3002-001110