Motorola Confidential Proprietary Gopi - Logic. – 9.15am Budi - Camera - 9.30am Gary - Blue-tooth, Rotator - 10am Lee Ming - RX. 10.30am David - TX. 11am.

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Presentation transcript:

Motorola Confidential Proprietary Gopi - Logic. – 9.15am Budi - Camera am Gary - Blue-tooth, Rotator - 10am Lee Ming - RX am David - TX. 11am Leng - PM/P-Flex/Keypad 11.30am Pang - Audio 12pm AOB pm V80 Analyzing Training

Motorola Confidential Proprietary V80 Logic 26MHz Crystal CKO = 52MHz Testpoint Neptune powersupply Pins/bypass caps Decoder IC, not used For V80 PSRAM Mode Resistor

Motorola Confidential Proprietary V80 Memory U700 Flash Memory Size: 256Mbit (24 address lines) PSRAM Memory Size: 64Mbit (22 address lines) Flash and PSRAM in a single chip High voltage programming test point. Can be used to check if the flash is getting power R897 PSRAM Mode Resistor. Without this resistor, phone will not turn on C702, C703, C700,C701 Power supply bypass caps. Vbuck = 1.87V Two suppliers: Intel and STM

Motorola Confidential Proprietary Neptune Voltages Signal NameTypical VdcCap to ProbeComments VDDA2.775VC806 VDD_CP5VC819 VDD1,2,3,4,REG_ BYP_CORE 1.875VC810,C826,C827, C829 AVDD1 to VC811,C812,C813 BVDD,CVDD, DVDD, JVDD 2.775VC815,C816,C817 FVDD1.875V LVDD1.55VC807 QVDD1.875VC814 VDD_TXRX2.775V

Motorola Confidential Proprietary CKO Capture

Motorola Confidential Proprietary Neptune STANDBY Level shifter IC U801 – Level shifter IC Purpose: Shift the the input voltage of 1.575V to an output voltage of 2.775V. Neptune outputs the “STANDBY” signal to PCAP V 2.775V

Motorola Confidential Proprietary V80 Testpoints Short IO_REG and WDOG testpoints for No power up failure troubleshoot Good Phone Without shorting WDOG and IO_REG, WDOG must be at 2.775V at all times 2.775V

Motorola Confidential Proprietary Troubleshooting Tips The radio draws 40mA to 60mA of current when the flash is blank (empty flash/ not programmed) A bricked phone will draw more current than a blank flash phone When a phone bricks and if the IMEI is not programmed, you can save the phone by using the erase_rom.shx file If IMEI is already programmed and phone bricks, replace the flash with a empty flash Place a short between WDOG and IO_REG before starting a No power up troubleshooting