Gary QuartanaMotorola Confidential Proprietary V80 Trouble Shooting Guide Jul 17, 2003 ~10ns Power...

Gary Quartana Motorola Confidential Proprietary

V80 Trouble Shooting Guide

Jul 17, 2003

~10ns

Power up time

URTS1 GPIO control

TPS851 output

V80

Troubleshooting Guide

Rev 1.0

3/29/04

Gary Quartana

• Bluetooth• Rotator Detection• Ambient Light Sensor

Gary Quartana Motorola Confidential ProprietaryJul 17, 2003

Power up time (timescale x 4)Power up settling time

TPS851 output


Bluetooth

Test procedure for Failure Analysis

1. BT_Init failure2. BT_TxPower failure3. BT_Audio_Loopback failure4. BT_Crystal_Trim failure5. BT_Host_Wake failure6. BT_Connection_Test failure


Power up time (timescale expanded)

TPS851 output

URTS1 GPIO control


Bluetooth

Neptune LTS/LTE

95L14BlueToothModule

PCAP

BTRF_REG = 1.8VDC

UART2

SAP

BLUEWAKE 26MHz

XTAL

BLUE HOST WAKE

26MHz

XTAL

IO_REG = 2.775VDC

System Block Diagram

32KHz


Data output settle time Lights On (lower lux)

TPS851 output

URTS1 GPIO control


Bluetooth

BTRF_REG – 1.875V

IO_REG – 2.775V

32KHz clock

26MHz clock

IO_REG – 2.775V

Pin 25 PA Output

UART test points

Host_W/Wake/ClkEn test points

27

341 9

17

10

1826


Data output settle time Lights On

TPS851 output

URTS1 GPIO control


BluetoothTest procedure for Failure Analysis

BT_Init failure

1. Check UART signal activity (TPBLUE_TX, TPBLUE_RX, TPBLUE_CTS. TPBLUE_RTS – 2.775V)

2. Check for BTRF_REG (C360 – 2.875V) and IO_REG (C361 – 2.775V)

3. Check 26MHz crystal input (C7630, C7629)

4. Check 32kHz crystal input (R321)

5. Check Host_Wake and Wake signal activity (TPBLUE_HW, TPBLUE_W – 2.775V)

6. Check left side of L14 BT module for good solderability of pins 27-347. Check bottom side of L14 BT module for good solderability of pins 1-9

32kHz R32126MHz C7629 26MHz C7630 12M Signaling

Enlarge Images Below For Viewing

1

3 3 4

5

Use Radiocomm v7.1.1 or later BT section under CIT tab

5



TPS851 output

URTS1 GPIO control



BT_TxPower failure

1. Check DC Impedance on TP300 BT antenna pad (6 to 7kohm)

2. Check metal BT antenna on back housing (look for bent or damaged part, good GND and TP100 connection)

3. Generate CW wave and probe BT antenna pad for signal on spectrum analyzer4. Check 26MHz crystal input (C7630, C7629)

5. Check UART signal activity (TPBLUE_TX, TPBLUE_RX, TPBLUE_CTS. TPBLUE_RTS – 2.775V)

26MHz C7629 26MHz C7630


1

4 4

3


12M Signaling

5



TPS851 output

URTS1 GPIO control



BT_Audio_Loopback failure

1. Check Audio Loopback (Click ‘Execute’ to generate 1kHz tone at level 2FFF and check that the response is not all zeros (0’s) )

2. Check BTRF_REG (1.875V)


4. Check left side of L14 BT module for good solderability of pins 27-34

26MHz C7629 26MHz C7630


1

3 3


Audio Loopback

1


TPS851 output

URTS1 GPIO control



BT_Crystal_Trim failure



3. Inspect Y5802 crystal for any damage

26MHz C7629 26MHz C7630


1

3 2


2


TPS851 output

URTS1 GPIO control



BT_Host_Wake failure



3. Check pins 9 and 11 for good solderability on module4. Check Host_Wake and Wake signal activity (TPBLUE_HW, TPBLUE_W – 2.775V)

26MHz C7629 26MHz C7630


1

3 2


2

4

412M Signaling


TPS851 output



BT_Connection_Test failure

Perform BT_Init and BT_TxPower failure analysis

• BT should pass connection test if all other tests pass • Else, check antenna in test fixture for proper signal strength

1



Data output settle time Lights Off

TPS851 output

URTS1 GPIO control


Rotator Detection


• Check for IO_Reg present on Vcc cap connected to pin 6 of each sensor(2.775V on C1780, C1701, C1771)

• Check output of sensor on pin 1 when magnet placed over top of IC(2.775V Logic high when no magnet, 0V Logic low when magnet placed over top of sensor IC)(C1770, C1711, C1781)

Radiocomm (SUSPEND): CIT tab (Get Flip State)

1. Rotate blade to 180 degrees and verify sensor functionality by checking the FLIP state for ‘Open’ or a return string of 0x01.2. Rotate blade to 90 degrees and verify sensor functionality by checking the FLIP state for a return string of 0x02.3. Rotate blade to 0 degrees and verify sensor functionality by checking the FLIP state for ‘Closed’ or a return string of 0x00.

U1770, U1700 & U1780



URTS1 GPIO control


Ambient Light Sensor


• Check for 2.775V on R838 when toggling GPIO URTS1 PE0 high(C801 and pin 1 of Q801 on keypad)

• Check for valid voltage levels on R834 and pin 5 when under office lighting(Voltage levels increase as ambient light increases)

Use Radiocomm v7.1.1 or later1) SUSPEND2) Run URTS1_high test script (this turns GPIO power on to the light sensor)



URTS1 GPIO control


Ambient Light Sensor


1) SUSPEND2) Run URTS1_high test script (this turns power on to the light sensor)3) Click GSM tab 14) Go to A/D section and click “manual entry” in the dropdown box5) Click Execute6) Another popup window will come up for the AD_CONV value. Enter 30 and click OK7) You will see the hex value of the A/D sampled voltage seen by Neptune8) 0000 indicates a dark environment or sensor turned off, non zero value (ex: 03FF high) indicates bright environment9) Values will change depending on the intensity of light entering the light hole on front housing

Use Radiocomm v7.1.1 or later

Test Scripts given to factory or follow 12M

Gary QuartanaMotorola Confidential Proprietary V80 Trouble Shooting Guide Jul 17, 2003 ~10ns Power...

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