Number Status Description ------- ------- --------------------------------------------------------------- 0001 Edit Remove Glamo (U1801) 0002 Discuss Remove NOR (U2501) 0003 Done Remove SHUTDOWN net and connect PMU.SHUTDOWN directly to GND 0004 Done Remove R1767 and R1768 and connect all PMU.EXTONx to R1766 0005 Done Simplify/remove BAT_ID/BATTEMP circuit (R1769) 0006 Done Either remove or populate R1701 (PMU.ADAPTSNS pull-down) 0007 Done Remove KEEPACT net and connect PMU.KEEPACT directly to IO_3V3 0008 Execute Remove external GPS antenna connector and circuit (CON7602) 0009 Done Remove LED transistors (Q1501 and Q1502) 0010 Execute Remove audio amplifier (U4101) 0011 Done Reduce number of varistors on USB_VBUS (C4902, C4909) 0012 Defer Add fuse to USB_VBUS 0013 Defer Increase rated current of B4902 0014 Defer Limit non-ESD overvoltage on USB_VBUS (U4905) 0015 Done Remove Calypso serial interface on headset (U4401) 0016 Done Remove upper acceleration sensor (U7801) 0017 Done Move Bluetooth module (U2) to main PCB 0018 Cancel Add beads/filters to audio signals leaving/entering can 0019 Discuss Consider applying buzz fix 0020 Cancel No common mode choke on stereo signals (B4102) 0021 Defer Use EMI-hardened microphone (MC4301) 0022 Done Apply bass fix 0023 Cancel Fix #1024 (C1009) 0024 Edit Improve GPS ground and PCB layout 0025 Done Connect CLKOUT1 to UEXTCLK (U1501) 0026 Execute Improve bus termination at sd-card 0027 Edit Renamed some nets for clarity 0028 Cancel Remove USB "charge path" power switch U4905 0029 Done Move 0R resistors next to PMU after caps 0030 Execute Replace Calypso with Telit GE865 0031 Done Use codec to detect jack insertion and HOLD button 0032 Execute Add EMI and ESD protection to headset jack 0033 Done Replace coupling capacitors for input/output lines 0034 Execute Route additional SPI/GPIO pins to debug connector 0035 Done Kill WLAN unused RF components 0036 Done Removal of decoupling capacitor C3020 0037 Done Route ROUT1/LOUT1 back to LINE1/LINE2 input 0038 Done Loudspeaker EMI filter 0039 Discuss Insert 0R resistors into SPI signals 0040 Discuss Remove backup battery (BAT1701) 0041 Discuss Test points and 0R resistors for camera interface 0042 Discuss Changing internal microphone to symmetrical configuration 0043 Discuss Assorted audio cleanup 0044 Discuss Current rating of backlight LED inductor (L1704) 0045 Edit Zero stock component replacements 0046 Edit reserved for more component replacements Open ECNs --------- 0001 GLAMO, CPU, LCM 0002 MEMORY, CPU 0008 GPS 0010 AUDIO 0019 AUDIO 0024 GPS 0026 SD-SIM 0027 General 0030 MODEM 0032 AUDIO 0034 IO 0039 CPU, LCM 0040 PMU, MODEM 0041 CPU 0042 AUDIO 0043 AUDIO 0044 PMU 0045 general