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DUAL BAND Mobile SGH-A200 ELECTRONICS by Toko (www.gsm-free.com) 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 and Circuit Diagram...
1. Exploded Views and Parts List Main Main Parts List Travel Adapter Travel Adapter Parts List Ciger Light Adapter Ciger Light Adapter Parts List Test Jig Wearable EAR Microphone Data Kit 1-10 Battery Charger 2. PCB Diagrams Main Top 2-1-1 Main RF Top 2-1-2 Main Base Band Top Main Bottom 2-2-1 Main RF Bottom...
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1. Exploded Views and Parts List 1-1 Main Exploded Views and Parts List...
1-3 Travel Adapter 1-4 Travel Adapter Parts List TYPE SEC CODE REMARK GH44-00171A CHINA GH44-00184A EUROPE GH44-00171C UNITED KINGDOM Gh44-00171E TAIWAN Exploded Views and Parts List...
1-5 Ciger Light Adapter 1-6 Ciger Light Adapter Parts List DESCRIPTION SEC CODE REMARK Ciger Light Adapter Code GH44-00170A BLACK Exploded Views and Parts List...
1-7 Test Jig TEST JIG GH80-10508A TEST JIG CABLE GH39-00079A RF JIG CABLE GH39-00093A Exploded Views and Parts List...
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DM CABLE GH39-00080A 1-7-1 Test Jig POWER SUPPLY 8922 or 8960 WIRELESS COMMVNCATIONS TEST SET RF JIG CABLE 232 CABLE TEST JIG CABLE Exploded Views and Parts List...
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5. Flow Chart of Troubleshooting and Circuit Diagram 5-1 Power ON 'POWER ON'does not work Check the Battery Voltage Charge the Battery is more than 3.2V The node Check U116 and the path from +VBATT between D110 and BAT101 = 3V ? to BAT101 U117 pin 1,4,10 >...
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Flow chart of Troubleshooting and Circuit Diagram...
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5-2 Initial Initial Failure Check and repair the important U103 pin 4 = "H" ? signals of U108 as follows The node between R162 and C183 Check U112 = "H" (RST) R114 = "H" (BOOT) Resolder R114 Check all the other connection by Test S/W R673 = "H"...
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Flow chart of Troubleshooting and Circuit Diagram...
5-4 Sim Part Phone can't access SIM card R699 = 2.9 V ? Check the circuit related to U463 Check the circuit related to U463 pin1 = 3 V ? R421, R428, U649 U101 pin6 = 3 V ? Resolder R103 U101 pin 5 = "H"...
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Flow chart of Troubleshooting and Circuit Diagram...
5-5 Microphone Part Microphone does not work Check Resolder CN503 pin 10, 11 and the connection ZD109, ZD112 from CN503 pin 10, 11 U113, U115 pin 2 (AVCC) 2.9V? Check the circuit related to U463 Check the circuit Resolder the R174, R175, R176, from U108 to U113, U115 R177, C187, C188 and C204 Check the Key PCB...
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5-10 Flow chart of Troubleshooting and Circuit Diagram...
5-6 Speaker Part Speaker does not work Resoler J101 J101 pin 2, 3 = short J101 pin 2, 3, 6 = 1.5V? Replace the PBA CN 105 pin 22, 23 = 1.5V? Resolder CN105 Check the depression of Modify the SPK pins the SPK pins Is Speaker working? Replace the Speaker...
5-7 Key Data Input Check Initial operation the pin 19,20,21,22 and 23 Replace the PBA of CN503 low? When one of the keys is pushed, Resolder pin 19,20,21,22 and 23 one of pin 19,20,21,22 and 23 of of CN503 CN503 is high ? Key PCB is OK ? Replace the Key PCB 5-12...
5-8 Alert Tone Abnormal Alert tone Is there alert wave form on the ALERT by Test S/W R110 during alert tone test? Is there alert wave form on the Check the circuit related to Q102 Q102 pin 3 during alert tone test? U116 pin 5 3.3V? Check the circuit related to U116...
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RTC 3V3(From U116 pin5) BUZ+ C102 D104 Q102 BUZ- R110 From IC R109...
5-9 Ring Indicator Ring Indicator LED does not work Q101 pin 2 = "H"? GPO2 by Test S/W Q101 pin 3 = "L"? Replace Q101 Resolder CN503, LED CN503 pin 3 = "L"? Key PCB is OK? Replace the Key PCB Flow chart of Troubleshooting and Circuit Diagram 5-15...
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5-16 Flow chart of Troubleshooting and Circuit Diagram...
5-10 Back Light Backlight does not work Backlight "ON" mode Select backlight "ON" mode in the menu? R141 = "H" ? GPO1 by test S/W LCD BACKLIGHT KEY PCB LED Check the Check the CN105 pin 17 = "H" ? CN105 pin 17 LCD backlight on ? Replace EL sheet...