Road Rover i10 Platform Service Manual
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Road Rover i10 Platform Service Manual

Vw platform
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Summary of Contents for Road Rover i10 Platform

  • Page 1 Service Manual for VW...

  • Page 2: Table Of Contents

    Contents Contents Hardware Navigation Board 1.Main power supply circuits on navigation board………………………………… …………………..… I10 Platform Preview 2.Main chips on navigation board…………………………………………………………………………………33 Structure and Design ……………………………………………………………………………………… ………. 1. U8 CPU………………………………………………………………………………………………………………………33 Connecters and Pin Diagram ………………………………………………………………………………….…02 2.U12、U13、U31、U32 DDR RAM（256M）………………………………………………………………...34 Cables ………………………………………………………………………………………………………………….…02 3.Flash (256M) ………………………………………………………………………………………………………………34 System Configuration………………………………………………………………………………………………..03...

  • Page 3: Basic Information

    General regulation………………………………………………………………………………………………………………46 Structure & Design General troubleshooting methods………………………………………………………………………………………46 All the units based on I10 platform adopt a brand new structure engineering design, Common failure and solutions ……………………………………………………………………………………………47 which makes the products have a better look , a better performance. 1.Cannot power on (black screen) ………………………………………………………………………………………47 2.All functions have no sound……………………………………………………………………………………………..50...

  • Page 4: System Configuration

    PLATFORM PLATFORM www.roadrover.cn/e www.roadrover.cn/e Connecters & PIN Diagram 5. Subwoofer pre-out cable---Pre-outs for subwoofer Amp Control and center signal; provide a trigger for external amplifier. This cable is special for car audio tuning Center out to realize a real 5.1 channel sound effect. Sub-woofer 6.

  • Page 5: Main Board

    PLATFORM PLATFORM www.roadrover.cn/e www.roadrover.cn/e Functions and Features Fundamental Performance and Parameter 1. Standard power interface, no damage to plug with the original car a. CD (internal amplifier output, standard output) 2. Support dual antenna interface, transfer-free SNR: ≧92B 3. Adopt Germany FAKARA standard radio connector, enhance the sensitivity and DYNAMIC: ≧90Db stability for the GPS reception.

  • Page 6: U13（Lm3S1793）Microcontroller（Mcu

    PLATFORM PLATFORM www.roadrover.cn/e www.roadrover.cn/e 1. U13（LM3S1793）Microcontroller（MCU） B+12v input to U6 1. Function: Control the power supply and all the functions for the whole system. MCU3.3V 2. Normal Operating Conditions: 2.1 Power supply circuit 2.2 Cr ystal oscillator oscillation circuit 2.3 Reset circuit 2.4 ACC detection circuit 2.5 Correct Software b.

  • Page 7: Mcu Situation Analysis After Working Properly

    PLATFORM PLATFORM www.roadrover.cn/e www.roadrover.cn/e U15 Reset IC 3.3V 2. System main power supply The system main power supply is composed of T_5V、12V、9V、+5V、+7.5V、-7.5V、 +5V、VCC 5V a. System power supply T_5V T5V is the power supply for front panel, CCD circuit, AV switching chip(U26), Q1 stabilizing circuit, DSP voltage-stabilizing circuit, fan power supply circuit, and USB/ iPod circuit.
  • Page 8 PLATFORM PLATFORM www.roadrover.cn/e www.roadrover.cn/e c. System power supply circuit M_+9V f. Radio power supply RADIO_+5V After the MOSFET Q1, there is a 12V offered to U4, then U4 will give a 9V to radio When U30 get a normal 9V at 1st and 2nd pin, it will provide a stable 5V for radio and DVD part as a driver power supply.

  • Page 9: Data Bus Works Properly

    PLATFORM PLATFORM www.roadrover.cn/e www.roadrover.cn/e i. System power supply CAN_VCC(5V) A short Summar y for MCU U8 gets the normal B+12V at 3rd pin, it will provide a 5V voltage for CANBUS Here is a short summar y and some extra information for MCU. transceiver, remote control receiver.
  • Page 10 PLATFORM PLATFORM www.roadrover.cn/e www.roadrover.cn/e 2.2 DSP serial data bus DSP serial data bus is controlled by MCU, all the functions share the same way to communicate with MCU. 3.3V MCU CANBUS Port DSP CANBUS Port 3.3V 2.3 DSP reset The DSP reset is controlled by MCU, there is a 3.3V voltage at reset pin of the MCU, 2.1 DSP power supply circuit when you press the reset button, the voltage there will be changed to low level, The main power supply circuit for DSP audio processing chip can be divided...
  • Page 11 PLATFORM PLATFORM www.roadrover.cn/e www.roadrover.cn/e d. Other Audio Source Processing 2.1 Radio Power Supply Circuit Besides, there are still some other audio sources like AV, TV, CDC, XM Radio， A 5V voltage power supply is needed for the digital radio chip. When Q1 is phone，AUX and iPod to be processed.
  • Page 12 PLATFORM PLATFORM www.roadrover.cn/e www.roadrover.cn/e So，that means the radio chip must work with DSP chip. If the DSP module cannot 5. U26(R2S11002AFT) AV Switcher work normally, the radio cannot scan for any station. 1. Function: Switch and transform the audio and video signals. radio antenna Speaker 2.
  • Page 13 PLATFORM PLATFORM www.roadrover.cn/e www.roadrover.cn/e 2.2 Serial Data Bus The AV switcher is controlled by MCU as well via data bus. Pin 51 and 52 is the data bus port. Data bus Voltage: 3.3V AV Switcher Summar y Responsible for some audio and video input, process and convert. a.
  • Page 14 PLATFORM PLATFORM www.roadrover.cn/e www.roadrover.cn/e b. -7.5V It will process the middle/bass audio signal from DSP, then offer the signal to Bipolar diode external amplifier. T_5V -7.5V for operational amplifier U17 2. Normal operating conditions: 2.1 Correct Power Supply 2.2 Audio signal input and output 2.2 Audio Signal Input and Output Here are 4 audio channels inputs and outputs.

  • Page 15: Dvd Power Supply

    PLATFORM PLATFORM www.roadrover.cn/e www.roadrover.cn/e 2. Normal operating conditions: 2.3 CCD Trigger 2.1 Correct Power supply When the vehicle is reversing, the reversing lamp will light up, this is because 2.2 Correct CCD camera power supply there is a +12V voltage provided for the lamp. Meanwhile，the high level will 2.3 CCD trigger works properly go to 1st pin of Q6 and reverse port will become low level trigger.

  • Page 16: Hand Brake Circuit Analysis

    PLATFORM PLATFORM www.roadrover.cn/e www.roadrover.cn/e There are 4 voltage supplies for DVD loader. They are 5V, 3.3V, 1.8V and 9V. 10. Hand Brake Circuit Analysis 5V power supply for DVD loader and 2 MOSFET When you pull up the hand brake, the pink BRAKE wire of our system will be BATT 12V 1.8V for main short circuit with GND, then the base of Q13 will get a voltage which is lower...

  • Page 17: Swc(Steering Wheel Control) Circuit

    PLATFORM PLATFORM www.roadrover.cn/e www.roadrover.cn/e b. Single Infrared Receiving Serial Port 14. ILL (Illumination) Circuit IR-OUT a. Illumination Trigger Circuit IR 3.3V from MCU （Port 63） When headlamp or dashboard lights is switched on, the ILL wire (LAMP_IN) gets a 12V voltage. Then the base of Q8 will get a 0.6V voltage (0V when ILL is off ), then 2nd and 3rd Q8 will be in conductive state, POT_LAMP of the MCU will be short circuit to GND, ILL detection port become low level.

  • Page 18: Main Power Supply Circuits On Navigation Board

    PLATFORM PLATFORM www.roadrover.cn/e www.roadrover.cn/e Navigation Board 1. Main Power Supply Circuit On Navigation Board The navigation board needs a 5V power supply, this voltage will be supplied to U1，U2，U3，U4，U6，U7. a. Power Supply Circuit---U1. When Q2 get a 3.3V power supply, it will be breakover. Then U1 get the 5V DDR RAM FLASH storage power supply, it will offer a stable 3.3V for CPU, FLASH, USB, audio processing...

  • Page 19: Main Chips On Navigation Board

    PLATFORM PLATFORM www.roadrover.cn/e www.roadrover.cn/e f. Power Supply Circuit---U6 c. Power Supply Circuit---U3 When Q4 get the 3.3V power supply, it will be breakover. Then U3 get the 5V When D6 get a 5V input at the 1 and 3 pin, U6 will output a stable 3.3V at 5 power supply at 3rd pin, it will provide a 2.6V for Q3, Q3 becomes conductive, pin to D7 and as a power supply for the batter y on the navigation board.

  • Page 20: U12、U13、U31、U32 Ddr Ram（256M

    PLATFORM PLATFORM www.roadrover.cn/e www.roadrover.cn/e 4. U29 (Expanded Memor y) 4.1 Function: Expanded memor y is used to extend 32.768KHZ the memor y of the device, which you 12MHZ can store the mass storage files, e.g. music, video and picture etc. 4.2 Operating conditions: 2.

  • Page 21: Display Screen

    PLATFORM PLATFORM www.roadrover.cn/e www.roadrover.cn/e b. Clock Frequency The correct clock 1.6V frequency is 12MHZ 12MHZ for TW8816. 1.4V 12MHZ c. MCU Data Bus Control Make sure the MCU date bus is working properly. 3.3V 3.3V 6. Display Screen 6.1 Function: To transfer the signals to a direct image or video on the screen .

  • Page 22: Touch Screen

    PLATFORM PLATFORM www.roadrover.cn/e www.roadrover.cn/e b. Display screen power supply 2—booster circuit( +16V & -7V The booster circuit for the display screen can be divided into two parts. The anode power supply +16V and the cathode power supply -7V. the power supply is about 3.4V-4.0V, LCD screen power which depends on the size of the display screen System power supply 5.3V...

  • Page 23: Sd Card

    PLATFORM PLATFORM www.roadrover.cn/e www.roadrover.cn/e 8. USB c. Clock Oscillation Frequency 1V at this point 8.1 Function: Clock oscillator frequency 12MHz Mainly used for reading external USB device. It can support 2 USB devices 1.5V at this point working in the same time. 8.2 Operating conditions：...

  • Page 24: Bluetooth Audio Switching Chip

    PLATFORM PLATFORM www.roadrover.cn/e www.roadrover.cn/e 10.3 Bluetooth Audio Amplifier U27 Bluetooth antenna U27 is the stereo power amplifier for microphone audio. When you connected the Bluetooth to make a call, it will improve the sound and the quality, also can decrease the noise. The module has many power supply pins.

  • Page 25: U22 Gps Module

    PLATFORM PLATFORM www.roadrover.cn/e www.roadrover.cn/e 12. U22 GPS Module 11.2 Operating conditions: a. power supply circuit work correctly 12.1 Function: b. data bus controlling work correctly GPS module is a dual mode filter. It can receive the RF signal and do the filtering, then enlarge the signal for CPU.

  • Page 26: Troubleshooting Methods And Steps

    PLATFORM PLATFORM www.roadrover.cn/e www.roadrover.cn/e www.roadrover.cn/e Troubleshooting Methods & Steps Replacement When you do not know the detail information of the circuit, you can replace some part to see where on earth the problem is located. Common Failures and Solutions 1. General Regulation 1.
  • Page 27 PLATFORM PLATFORM www.roadrover.cn/e www.roadrover.cn/e www.roadrover.cn/e 1. When the system main power is normal but the unit still cannot be powered on. 1. The reset circuit. When the unit work normally, the U15 should be high level You have to check the power supply for MCU. The 5 pin of U1 is should be 3.3V. 3.3V, when press the RESET button, the U15 get the low level, reset the unit.

  • Page 28: All Functions Have No Sound

    PLATFORM PLATFORM www.roadrover.cn/e www.roadrover.cn/e www.roadrover.cn/e DSP 3.3V power supply 2. If the power supply for TFT board 5V is normal, and the unit is still black screen, measure the below check point. 51 pin of MCU 2V; DSP 1.8Vpower supply PC_POWER R 60 pin of MCU 3.3V PANEL LED PWM...

  • Page 29: Dvd Failure (Blue Screen/No Sound/No Image/No Color)

    PLATFORM PLATFORM www.roadrover.cn/e www.roadrover.cn/e www.roadrover.cn/e Solutions: Solutions: 1. DVD blue screen. Check the DVD power supply chip U9, the pin 2 and pin 4 Replace a new radio antenna to test the radio function, if it has nothing to do is the output 1.8V and the pin 3 is the 3.7V input.

  • Page 30: Tv/Aux/Ipod No Sound

    PLATFORM PLATFORM www.roadrover.cn/e www.roadrover.cn/e 2. When the power supply is normal, check pin 51, 52 of U26, they are the data bus to MCU, voltage should be 3.3V. 9V sustain for DVD motor 1. When the U26 is working correctly, and iPod/aux/TV has no sound. Check audio input pin 10, 11 to U26, make sure there is no open circuit.

  • Page 31: Handbrake Doesn't Work

    PLATFORM PLATFORM www.roadrover.cn/e www.roadrover.cn/e When the reverse trigger circuit is normal, MCU get the right detecting voltage, 1. When the handbrake cable is free, there is a 3.3V. If the voltage is not correct, then send a low level to the Q6. If it's a high level, that means MCU is defective, you have to check the Q13 to see if there is anything wrong with this triode.

  • Page 32: Cannot Recognize Usb Device

    PLATFORM PLATFORM www.roadrover.cn/e www.roadrover.cn/e 10. Cannot recognize USB device MCU provides a 3.3V for the receiver, if the receiver gets any signal from remote Reasons: control, it will be transmitted to MCU via this line. And MCU will work according a.
  • Page 33 PLATFORM PLATFORM www.roadrover.cn/e www.roadrover.cn/e 2. If the power supplies are normal, then check the clock frequency of the cr ystal oscillator.Y2 should be 32.768 KHz, and Y1 should be 12MHz. Navi part Display part 2. After confirming that NAVI part causes blurred screen/white screen, you 3.

  • Page 34: Bluetooth Cannot Be Connected/ Cannot Search Any Bluetooth Device

    PLATFORM PLATFORM www.roadrover.cn/e www.roadrover.cn/e 14.Bluetooth cannot be connected/ cannot search any Bluetooth device 2. U17 is the power supply chip for TW8816, pin 4 and pin 6 should be 3.3V and 1.8V for the TW8816, and the pin 2 is the power input 3.7V. Reasons: a.

  • Page 35: The Receiver Cannot Hear Any Sounds Or Noises Exist When Call Somebody Via Bluetooth

    PLATFORM PLATFORM www.roadrover.cn/e www.roadrover.cn/e 15.The receiver cannot hear any sounds or noises exist when you call somebody via Bluetooth Pin 1 ， pin 9 R & L output Reasons: channel a. The MIC is defective b. The voice signal amplifier chip is defective ，...

  • Page 36: Gps Cannot Get The Position

    PLATFORM PLATFORM www.roadrover.cn/e www.roadrover.cn/e b2.2. When the power supply is normal, then check the Temperature- Bluetooth Audio input compensation Cr ystal Oscillator (TCO), if you cannot see any wave, maybe the cr ystal oscillator or the GPS module is defective, then replace the oscillator to find out the failure point.

  • Page 37: Touch Screen Doesn't Work

    PLATFORM PLATFORM www.roadrover.cn/e www.roadrover.cn/e Any of them exists bad soldering, open circuit or short circuit will lead to the 20． Touch screen doesn't work screen color bias. Reasons: a. The touch screen is defective b. CPU is defective Measure the resistance value Solutions:...
  • Page 38 PLATFORM www.roadrover.cn/e b.When the headlamp detection circuit is working correctly, MCU will send a high level to the base of Q15. If there is no 5V high level for Q15, which means MCU is defective, replace it. If Q15 works properly, it will make the base of the Q14 connect to GND, then the Q14 starts work and provide a 12V for the LED lights on the front panel.

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