Table of Contents
Advertisement
Quick Links
Advertisement
Table of Contents
Subscribe to Our Youtube Channel
Related Manuals for Prestigio PAP5000
Summary of Contents for Prestigio PAP5000
- Page 1 PAP5000 Maintenance Manual Table of Contents...
-
Page 2: Table Of Contents
1. Circuit diagram instruction ......................3 1.1 Main board explored view .............. 3 1.2 Detailed Description of Circuit Chart ..........5 1.3 Base band circuit ................5 1.4 Function circuit ................6 2．Fault maintenance ........................8 2.1 fault repair .................. -
Page 3: Circuit Diagram Instruction
1. Circuit diagram instruction 1.1 Main board explored view Earphone connector 32.768 crystal USB connector Back camera connector Front camera connetor Touch IC RF transceiver G_RF W_PA W_RF FLASH PMIC KB connector MTK6577 G_PA... - Page 4 Battery connector SIM card connector LCD connector T card connector Backup battery MT6620 chip TP connector...
-
Page 5: Detailed Description Of Circuit Chart
1.2 Detailed Description of Circuit Chart RF filter U205 RF filter U204 PA U202 RF transceiver PA Key pad U203 U201 light sensor PA U101 CAM RF filter U102 T ‐ card RF filter SIM 1 U104 SIM 2 W/F/G/B 4 in 1 chip 1.3 Base band circuit Base Band adopts MT6577... -
Page 6: Function Circuit
WIFI MT6620 Module PS/ALS G-sensor MT6577 MT6577 internal schematic block diagram 1.4 Function circuit GPS、WIFI、BT、 FM circuit:... - Page 7 Dual SIM circuit: T-Flash Card circuit...
-
Page 8: Fault Maintenance
2．Fault maintenance Note: 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 e fficiency. The r epair 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 9: Fault Repair
2.1 fault repair Base 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。 (1) Below 20MA: indicates that power starts working but the next action is not performed. - Page 10 (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 Fail to download...
- Page 11 Bluetooth failure Please refer to the details of Bluetooth circuit description in Part 1. First perform visual examination to check whether there are missing pieces on related circuits or significant deviation. Then perform circuit analysis according to the maintenance process.
-
Page 13: Trouble Shooting And Flow Chart
3 Trouble shooting and flow chart 3.1 Unable to power on the handset... -
Page 14: No Ring Tone
3.2 No ring tone... -
Page 15: Lcd Display Fault
3.3 LCD display fault... -
Page 16: Charging Fault
3.4 Charging fault... -
Page 17: Camera Fault
3.5 Camera fault Failure to use camera Check camera for damage Replace new camera Check if camera is soldered or Solder camera connector assembled well or Re-assemble camera Mark the mainboard Check camera circuit for fault with analysis result Replace new mainboard... -
Page 18: Fail To Identify Sim Card
3.6 Fail to identify SIM card... -
Page 19: Mic Fault
3.7 MIC fault... -
Page 20: Keypad Fault
3.8 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 21: Receiver Fault
3.9 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 22: Vibrate Fault
3.10 Vibrate fault Vibrator fault or No vibration Is vibrator soldered well ? Solder vibrator or replace vibrator Check : Wire of vibrator Replace vibrator isn’t broken Check vibrator circuit Mark the mainboard with No short circuit or open circuit analysis result Replace new mainboard... -
Page 23: Fm Fault
3.11 FM fault... -
Page 24: No Signal
3.12 No 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 25: Failure To Identify T-Flash Card
3.13 Failure to identify 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 26: Earphone Fault
3.14 Earphone fault Failure to use earphone Check: earphone is ok? Replace new earphone No damage Check earphone connector for Solder earphone connector soldering defect Is there any foreign matter in Clean or replace connector earphone connector? Check earphone circuit for any Mark the mainboard with fault analysis result... -
Page 27: Unable To Use Usb
3.15 Unable to use USB Uable to use USB Check : USB cable is ok, no pin of Replace new USB cable connector is broken Check if USB connector is Solder or replace USB solder ok, no short circuit connector Replace new mainboard...
Need help?
Do you have a question about the PAP5000 and is the answer not in the manual?
Questions and answers