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Summary of Contents for FLY DS108
- Page 1 DS108 Maintenance Manual For internal use only 2011-8-20 Document Name ：DS108 Maintenance Manual Version：V1.0 Draft date：2011-8-20 Document code：...
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Page 2: Table Of Contents
Table of Contents 1 Product performance is introduced ---------------------------3 2 The machine disassemble chart and parts lists ---------------4 3 Assemble and disassemble guidelines -------------------------5 4 Circuit diagram, detailed instructions ---------------------12 5 Notes on Failure Handling ----------------------------------13 6 Fault repairs -----------------------------------------------14 7 Troubleshooting --------------------------------------------16... -
Page 3: Product Performance Is Introduced
Product performance is introduced 1.1Product overall introduction GSM/GPRS 850/1800/1900 or 900/1800/1900 MHz（0ptional） WAP/MMS MP3 player Voice Recorder FM Radio-internal antenna Micro USB 2.0 JAVA 2.2 QCIF MTK 6252A platform Appearance... -
Page 4: The Machine Disassemble Chart And Parts Lists
The machine disassemble chart and parts lists 2.1 DS108 GSM digital telephone decomposition figure Assemble and disassemble guidelines 3.1 Assemble introduction 1. Assemble PCBA. a：Assemble Dome; refer to the four holes in Dome. Reference holes... - Page 5 b：Solder LCD; refer to the sign on the main board, then stick the gasket under LCD d: lie the LCM to main board Gasket Mylar tap e. Solder vibrator and speaker, torch, notice to the polar, as figure.
- Page 6 f. Assemble Speaker trestle as below turn put Speaker into trestle，Assemble holder to PCBA —vibrator—fasten screw . g. Assemble GSM antenna, then fasten the screw.
- Page 7 h. Solder microphone 2. Assemble cover a：Assemble keypad，Receiver, as figure Here first...
- Page 8 b: Put PCBA in to cover, notice on the hook and microphone. c: Assemble torch lens d: Assemble B cover ①button B cover ②Fasten Screws ③Fill the plug...
- Page 9 3.1Disassemble introduction Disassembly process is opposite to assembly process...
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Page 10: Circuit Diagram, Detailed Instructions
Circuit diagram, detailed instructions J501 IO connector X301 Crystal J603 T-Card J302 Battery SSP-T7-F slot slot U701 FM IC RDA5802HS U102 RF PA RPF88162B U901 BT chip U201 J701 SIM Slot U401 Flash Rom MT6252A Camera pad Lens pad Key backlight Base band... - Page 11 Flash Room FM band...
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Page 12: Notes On Failure Handling
Dual SIM 5 Notes on Failure Handling Notes: The PCBA repairing is a very important procedure during the final production of cellular phones. The speed and quality of repairing decides the yield and production efficiency. The repair idea is very important for a good repairing technician. Make sure not to heat a board right away once a phone reaches at hand. -
Page 13: Fault Repairs
6. Fault repair 6.1Base band MTK uses relatively high integration and has limited peripheral independent elements. Check whether there is any additional element, missing or wrong element before hot air gun is used. If visual detection fails to find problem, use some equipments to find failure positions。... -
Page 14: Troubleshooting
(3) 30~90MA: if the software, 26M and 32K are all normal, the cause can be incomplete soldering. Check CPU and Flash Startup process： When the Power-On button is pressed, PWRKEY will detect a low voltage. The internal PMIC will turn on the LDOs which provide power-supply to base band 30ms later; then the RESET circuit of the PMIC will generate the reset signal 200ms later to make the base band chip run the power-on software 6.2Fail to download... - Page 15 7.1Configuration defect For structural parts of the fault, please refer to phone the disassembly procedures for the corresponding change。 7.2 Unable to power on the phone...
- Page 16 7.3 Ring tone Fault...
- Page 17 7.4 LCD display fault...
- Page 18 7.5 Failure to Charge...
- Page 19 7.6 Failure to identify SIM card...
- Page 20 7.7 Main Microphone fault...
- Page 21 7.8 Keypad fault Keypad doesn’t work correctly Check : DOME is pasted and Paste the DOME or keymat is assembled correctly assemble keymat again Is there any dirty on keypad Clean keypad surface and surface? test Is sidekey soldered well? Solder or replace sidekey No short circuit Replace new mainboard...
- Page 22 7.9 Receiver fault No voice in receiver Is receiver ok ? Replace new receiver No broken wire Check receiver connector for Solder receiver connector soldering defect Check receiver circuit for any Mark the mainboard with fault analysis result Replace new mainboard...
- Page 23 7.10 Vibrator fault...
- Page 24 7.11 FM fault...
- Page 25 7.12 Bluetooth fault Bluetooth can’t work Software version is correct Re-download software Is BT antenna assembled Re-assemble BT antenna correctly? Check BT circuit Mark the mainboard with No short circuit or open circuit analysis result Replace new mainboard...
- Page 26 7.13 No RF Signal No RF signal Is RF antenna assembled correctly? Re-assemble BT anntena Is the phone set into Flying Return to Normal mode mode? Mark the mainboard with Check RF circuit for any fault analysis result Replace new mainboard...
- Page 27 7.14 Failure to read T-flash card Failure to read T-flash card Is T-flash card inserted correctly? Re-insert T-flash card Check: the T-flash card is ok? Replace new card Clean socket or replace Check card socket is clean and socket no physical fault Mark the mainboard with Check card circuit for any fault analysis result...
- Page 28 1.1.1 7.15 Earphone Fault ---END---...
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