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Service Manual
ASUS P320 Level 3 4 Trouble
shooting Guide
Ver 1.0
1
ASUS Proprietary

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Table of Contents

   Also See for Asus P320

   Summary of Contents for Asus P320

  • Page 1 華 碩 電 腦 華 碩 電 腦 ■ Service Manual ASUS P320 Level 3 4 Trouble shooting Guide Ver 1.0 ASUS Proprietary...
  • Page 2: Table Of Contents

    ECEIVER AILED 5. RF REPAIR REQUIREMENT..............25 5.1 S :..............25 OFTWARE REQUIREMENTS 5.2 H : ..............25 ARDWARE REQUIREMENTS 5.3 E ....................25 QUIPMENT 6. RF BLOCK DIAGRAM ................26 6.1 GSM/EDGE....................26 6.2 GPS ......................26 ASUS Proprietary...
  • Page 3 7.3 BT / W ....................29 8. GSM TROUBLE SHOOTING..............30 8.1 M ................ 30 ETHODS FOR DEBUGGING 8.2 AFC F ....................33 8.3 APC F (TX)..................34 8.4 AGC F (RX)..................35 9. GPS TROUBLE SHOOTING..............36 ASUS Proprietary...
  • Page 4: Over View

    華 碩 電 腦 華 碩 電 腦 ■ Service Manual 1. Over view 1.1 S S S S ystem block diagram ystem block diagram ystem block diagram ystem block diagram Figure 1. System Block Diagram ASUS Proprietary...
  • Page 5: Power Domain Block

    華 碩 電 腦 華 碩 電 腦 ■ Service Manual 1.2 Power Domain Power Domain Block Block Power Domain Power Domain Block Block Figure 2. Power Block Diagram ASUS Proprietary...
  • Page 6: Key Features

    J2ME (CLDC 1.1 + MIDP2.0) OMA 1.0 (optional) PIM & Utilities Contacts, Notes, Calendar, Tasks, Alarm, Calculator, File Manager, and MSN Ringtone 128-ch Polyphonic ringer & MP3 Others ASUS Today, Profile Manager, Theme Manager, UrTime , Newstation, ASUS Backup, etc. ASUS Proprietary...
  • Page 7: Appearance

    華 碩 電 腦 華 碩 電 腦 ■ Service Manual 1. 1. 1. 1.4 4 4 4 Appearance Appearance Appearance Appearance ASUS Proprietary...
  • Page 8: Placement Top View

    1 1 1 1 ..5 5 5 5 Placement TOP View Placement TOP View Placement TOP View Placement TOP View 1.15-Pin Debug Connector 2. Receiver 3.3-Color LED 4. Power Key Switch 5. Micro SD Card Socket 6. Power 7. Reset Key Switch 8. Backup Battery ASUS Proprietary...
  • Page 9: Placement Bottom View

    華 碩 電 腦 華 碩 電 腦 ■ Service Manual 1. 1. 1. 1.6 6 6 6 Placement Bottom View Placement Bottom View Placement Bottom View Placement Bottom View ASUS Proprietary...
  • Page 10 17. TWL3027 (E-Syren) PMU IC 18. LCM Connector 19. Charger IC 20. One NAND 21. Camera Key Switch 22. BT/ WiFi Combo Module 23. BT/ WiFi Chip Antenna 24. Reset Key Switch 25. Mini USB Connector 26. Microphone ASUS Proprietary...
  • Page 11: System Boot Up Sequence

    2.1 Power/ Clock/ Reset Ramp Process Power/ Clock/ Reset Ramp Process Power/ Clock/ Reset Ramp Process Power/ Clock/ Reset Ramp Process 2.2 Power On Reset Generation Power On Reset Generation Power On Reset Generation Power On Reset Generation ASUS Proprietary...
  • Page 12: Equipment / Tools

    華 碩 電 腦 華 碩 電 腦 ■ Service Manual 3. Equipment / Tools ASUS Proprietary...
  • Page 13 華 碩 電 腦 華 碩 電 腦 ■ Service Manual 6. Headset (USB Port) ASUS Proprietary...
  • Page 14: Trouble Shooting Case

    華 碩 電 腦 華 碩 電 腦 ■ Service Manual 4. Trouble shooting case ASUS Proprietary...
  • Page 15: Can T Power On

    U1 and U5. 5 Remove the Memory U5, Re-download Image and Remount U5. Note 2: 1 Don’t provide Power to PCB, and measure the impedance of all power domain on the device. Note 3: 1 Re-download image. ASUS Proprietary...
  • Page 16: Display Failed

    1. Check LCD connector (CON9) => assembly, soldering issue 2. Replace LCD to golden sample => component issue 3. Check power supplied (R233, R232), LCM_RST# (R195), LCM_PWR_EN (R240) => soldering issue 4. Check communicated components between LCD and CPU (EMI1~5) => soldering issue. ASUS Proprietary...
  • Page 17: Touch Panel Failed

    1. Check LCD connector (CON9) => Assembly, Soldering issue 2. Replace LCD to golden sample => Component issue 3. Check if the Hold Key is locked => Assemble issue 4. Check U15. C184~C187 => Assembly, Soldering issue 5. Check Power R91=> Soldering issue ASUS Proprietary...
  • Page 18: Battery Connector Defectives

    Battery Battery connector connector defectives defectives 1. Check the Battery connect (CON7) => Soldering issue 2. Check signal, BAT HDQ (R102), U18 (Charger IC) => Soldering issue The Charger IC can get the current via CON7. ASUS Proprietary...
  • Page 19: Sim Card Failed

    1. Check Wireless-manager on the WM6, Phone function must be ON => Operation notice 2. Check antenna cover => Assembly issue 3. Check SIM socket (CON1) and peripherals => Soldering issue 4. Check E-Syren (U17) and peripherals => Soldering issue ASUS Proprietary...
  • Page 20: Micro Sd Card Failed

    1. Check Micro-SD socket (J5) => soldering issue. 2. Check communicated components between Micro-SD (J5) and CPU (U1), U346, U347 peripherals => Soldering . 3. Measure power supplied U21 and R209 => Solder issue. 4. Measure clock signal SDMMC_CLK (R159) => Check U1 and peripherals ASUS Proprietary...
  • Page 21: Audio Headphone Failed

    ■ Service Manual 4.7 Audio Headphone Failed Audio Headphone Failed Audio Headphone Failed Audio Headphone Failed 1. Check Mini USB Connector (J6) => SMT issue 2. Check switch (U33), Amplifier (U13), E-Syren (U17) and peripherals => SMT issue. ASUS Proprietary...
  • Page 22: Board Microphone Failed

    碩 電 腦 ■ Service Manual 4.8 Board Microphone Failed Board Microphone Failed Board Microphone Failed Board Microphone Failed 1. Check assembly rubber => Assembly issue. 2. Check Board Microphone (M1), E-Syren (U17) and peripherals => SMT issue. ASUS Proprietary...
  • Page 23: Speaker Failed

    4.9 Speaker Failed Speaker Failed Speaker Failed Speaker Failed 1. Check Speaker Entity and Spring => Assembly, SMT 2. Replace to golden sample => Component issue. 3. Check Power amplifier (U12), E-Syren (U17) and peripherals => SMT issue. ASUS Proprietary...
  • Page 24: Receiver Failed

    Receiver Failed Receiver Failed 1. Check Receiver Entity and Spring => Assembly, SMT 2. Replace to golden sample => Component issue 3. Check Receiver Pad ( REC1) , E-Syren (U17) and peripherals => SMT issue. Figure 21. WiFi circuit ASUS Proprietary...
  • Page 25: Rf Repair Requirement

    High Frequency Probe with DC Block (connect with a 0603 1µF capacitor) 5.3 Equipment Equipment Equipment Equipment : Test Fixture /PC Cable + Open COM port tool Oscilloscope Communication tester:Agilent 8960, CMU200 or Anritsu 8820 Digital Multi Meter Power Supply Spectrum Analyzer (up to 3.0 GHz) ASUS Proprietary...
  • Page 26: Rf Block Diagram

    碩 電 腦 ■ Service Manual 6. RF Block Diagram 6 6 6 6 .1 .1 .1 .1 GSM/EDGE GSM/EDGE GSM/EDGE GSM/EDGE 6.2 GPS 6.2 GPS 6.2 GPS 6.2 GPS 6.3 BT/WiFi 6.3 BT/WiFi 6.3 BT/WiFi 6.3 BT/WiFi ASUS Proprietary...
  • Page 27: Rf Pcb Location

    碩 電 腦 華 碩 電 腦 ■ Service Manual 7. RF PCB Location GSM antenna fed-pin GSM RF GPS antenna fed-pin GPS Area GPS SiRF chip Transceiver GSM/EDGE OMAP850 Area E-Syren ALPS BT/WiFi combo module BT/WiFi area ASUS Proprietary...
  • Page 28: Gsm

    華 碩 電 腦 華 碩 電 腦 ■ Service Manual 7.1 GSM 7.1 GSM 7.1 GSM 7.1 GSM Power 6272 7.2 GPS SiRF Module ASUS Proprietary...
  • Page 29: Bt/ Wifi

    華 碩 電 腦 華 碩 電 腦 ■ Service Manual 7.3 BT / / / / WiFi 7.3 BT WiFi 7.3 BT 7.3 BT WiFi WiFi BT/ WiFi Combo wireless Module ASUS Proprietary...
  • Page 30: Gsm Trouble Shooting

    1. Calibration log file 2. Using debug tool AFC:Frequency calibration AGC:RX gain calibration APC:TX power calibration ( GSM & EDGE ) Debug Tool 8.2 RF Debug Tool 1. Double click the tool Build COM port and try to enter Test mode! ASUS Proprietary...
  • Page 31 華 碩 電 腦 ■ Service Manual 2. choose the IC -> Infineon SmartPM for P320 radio process type. 3. Transmit function and Receiver function group AFC Utility For GSM frequency test AGC Utility Auto Gain control for RX TX Utility1 APC test item...
  • Page 32 華 碩 電 腦 華 碩 電 腦 ■ Service Manual ASUS Proprietary...
  • Page 33: Afc Fail

    Service Manual 8.2 AFC Fail AFC Fail AFC Fail AFC Fail 1. Check RF connector firstly. 2. Check calibration log file. -AGC fail----check U1806 ( Re-heat on U1808 ). -APC pass----check OMAP850 (U1). -APC fail-----check E-SYREN (U17). connector U1808 ASUS Proprietary...
  • Page 34: Apc Fail (tx)

    ■ Service Manual 8.3 APC Fail (TX) APC Fail (TX) APC Fail (TX) APC Fail (TX) Check RF connector firstly Checking which band fail Using debug tool -Check U1806 (re-heat U1809) -Check TX trace connector U1806 U1809 U1808 ASUS Proprietary...
  • Page 35: Agc Fail (rx)

    AGC Fail (RX) AGC Fail (RX) AGC Fail (RX) Check RF connector firstly Read the g-magic value (200-212) -Too high: Check instrument setting -Too low: Using debug tool Check the U1806 (re-head) Check the RX trace connector U1806 U1809 U1808 ASUS Proprietary...
  • Page 36: Gps Trouble Shooting

    1. Compare to golden samples 2. Pass: check passive port 3. Fail: check GPS trace -Checking the CN value in passive port 1. Compare to golden samples 2. Pass ----check antenna pad 3. Fail------check GPS trace Active port ASUS Proprietary...

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