Motorola Moto X Pure Edition User manual

Moto X Pure Edition/Moto X Style
Baseband TROUBLESHOOTING GUIDES
MOTOROLA CONFIDENTIAL
Moto X Pure Edition/Moto X Style
Baseband TROUBLESHOOTING GUIDES
V1.0
© 2009 Motorola Proprietary & Confidential

Moto X Pure Edition/Moto X Style
Baseband TROUBLESHOOTING GUIDES
MOTOROLA CONFIDENTIAL
TABLE OF CONTENTS
1. Overall Block Diagram ………………..………………………………………. 3
2. Snapshots of Main Board ………………………………………………...…… 5
3. Charging Troubleshooting …………………………………………………….. 9
4. LED/Proximity & IR Sensor/uSIM/SDCARD Troubleshooting ………….... 13
5. Sensors Troubleshooting …………………………………..…………...……. 22
6. Touch Troubleshooting …………………………..………………….………... 29
7. Display Troubleshooting ………………………………….…………..………. 34
8. Camera Troubleshooting ……………………………………………..………. 40
9. Audio and Vibrator Troubleshooting ………………………………..……….. 50
10. NFC Troubleshooting …………………………………………………………. 81

Moto X Pure Edition/Moto X Style
Baseband TROUBLESHOOTING GUIDES
MOTOROLA CONFIDENTIAL
OVERALL
BLOCK DIAGRAM

Moto X Pure Edition/Moto X Style
Baseband TROUBLESHOOTING GUIDES
MOTOROLA CONFIDENTIAL

Moto X Pure Edition/Moto X Style
Baseband TROUBLESHOOTING GUIDES
MOTOROLA CONFIDENTIAL
SNAPSHOTS OF
MAIN BOARD

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Top Side
(Battery side)
Bottom Side
(Display side)
Snapshots of Main PCB – Top and Bottom

Moto X Pure Edition/Moto X Style
Baseband TROUBLESHOOTING GUIDES
MOTOROLA CONFIDENTIAL
Main Board – Top Placement

Moto X Pure Edition/Moto X Style
Baseband TROUBLESHOOTING GUIDES
MOTOROLA CONFIDENTIAL
Main Board – Bottom Placement

Moto X Pure Edition/Moto X Style
Baseband TROUBLESHOOTING GUIDES
MOTOROLA CONFIDENTIAL
CHARGING
TROUBLESHOOTING

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Baseband TROUBLESHOOTING GUIDES
MOTOROLA CONFIDENTIAL
• Uses two charger ICs in parallel. The primary IC is U2500 and the secondary IC is
U540 (used for turbo charging only).
• Charge Path (1 of 2, primary charger IC):
USB Connector J500(pin1) -> Charger IC U2500(pin 193,194, 195,208,209,209,210) ->
L2509 -> Charger IC U2500(pin 174,189,204,205) -> Charger IC U2500(pin
173,188,202,203) -> R521 ->Battery Connector, J510 Pin 4
CHARGING TROUBLESHOOTING
Charger IC

Moto X Pure Edition/Moto X Style
Baseband TROUBLESHOOTING GUIDES
MOTOROLA CONFIDENTIAL
• Charge Path (2 of 2, secondary charger IC):
-> Charger IC U540(pin 40,41,42,47,48,49) -> Charger IC U5201(pin 2,9,16,23) ->
R521 -> Battery Connector J510(pin 4)
CHARGING TROUBLESHOOTING (cont’d)

Moto X Pure Edition/Moto X Style
Baseband TROUBLESHOOTING GUIDES
MOTOROLA CONFIDENTIAL
In the event of charging issues :
• Do visual inspection on USB connector and battery connector.
• Check charging voltages along the charging path.
• Measure USB_PWR charger input voltage at C541 (SMB1351 Input) and
C2518 (PMI8994 input). The voltage should be between 4.3V ~ 9.90V.
• Check B_PLUS voltage at C2510. It should be 4.35V or lower.
• Check battery voltage at J510 pin 4. It should be 4.40V or lower. If battery is
below 2.1V, there maybe a short in the circuit somewhere and the battery
protection circuit is triggered.
• Check battery ground path - J510 pin 1.
• Battery temperature should be between 0ºC ~ 45ºC to be fully charged. Read the
phone temperature using the following steps: Attach a USB cable to a powered on
phone. In a terminal window, type “adb root”, “adb shell”, “cat /sys/class/
power_supply/battery/temp”.
• The temperature will be returned with 3 digits, with no decimal so 25C will read
250.
CHARGING TROUBLESHOOTING (cont’d)

Moto X Pure Edition/Moto X Style
Baseband TROUBLESHOOTING GUIDES
MOTOROLA CONFIDENTIAL
LED/PROXIMITY &
IR SENSOR/USIM/uSD CARD
TROUBLESHOOTING

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Baseband TROUBLESHOOTING GUIDES
MOTOROLA CONFIDENTIAL
• SOL LED (White) is driven by U2000 PM8994 SOL_LED_SINK (PM8994_MPP8)
and B_PLUS
SOL (Sign of Life) LED
B+
PM8994_MPP8

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Baseband TROUBLESHOOTING GUIDES
MOTOROLA CONFIDENTIAL
In the event of SOL LED issue:
• Check voltage at LED Anode (pin 2) and Cathode (pin 1) of D610
• LED Vf @If,10mA = V_anode - V_cathode = 2.7V(typ.), 3.1V(max)
• If LED is working, Vf should be in the available range, about 2.8V.
White SOL LED
LED On LED Off
FTM power, w/o battery V_Anode: 3.15V~3.2V
V_Cathode: 0.3V
Vf = 2.8V
V_Anode: 3.15V~3.2V
V_Cathode: 0.95V
Vf = 2.2V
FTM power, w/
battery(3.8V)
V_Anode: VBatt+ 0.1V,
3.9V
V_Cathode: 1.05V
Vf = 2.85V
V_Anode: VBatt+ 0.1V,
3.9V
V_Cathode: 1.66V
Vf = 1.95V

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IR Proximity Sensor – Ambient Light Sensor
IR Proximity & Ambient Light Sensor circuit is located on a mainboard. In the event of
IR proximity or ambient light sensor issue at phone level:
• Visually check under a microscope if the grommet is placed on the sensor correctly (whether the
grommet blocks the lens opening)

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IR Sensor
There are 1 receiver sensor and 3 IR LEDs for operating IR sensor.
IR receiver sensor and 3 LED circuits are located on a mainboard. In the event of IR
sensor issue at phone level:
• Visually check under a microscope if the grommet is placed on the sensor correctly (whether
any of the grommets block the lens openings)

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Baseband TROUBLESHOOTING GUIDES
MOTOROLA CONFIDENTIAL
• Depending on the PCB board variant, there are up to 2 SIM connectors on PCB
board.
• Each SIM connector is operated independently with its own power, detection and
SIM bus interface.
SIM

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Baseband TROUBLESHOOTING GUIDES
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SIM (cont’d)
Secondary SIM: These components may be DNI depending on sku.

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Baseband TROUBLESHOOTING GUIDES
MOTOROLA CONFIDENTIAL
In the event of SIM issue:
• Do a thorough visual check on SIM connector M4201 and M4202 for any sign of
mechanical contact issues.
• Inspect all SIM circuit components on PCB.
• Check SIM power at C4203 (for primary SIM) and at C4223 (for secondary SIM)
and SIM card detection signal TRAY_DET at E4210. TRAY_DET is high when
tray is inserted.
• Check SIM bus interface signal activities during SIM access (UIMx_RST,
UIMx_CLK, UIMx_DATA).
SIM (cont’d)