Motorola Mototrbo - 2.0 Power-Up Troubleshooting Chart

1-2 Power-Up Troubleshooting Chart
2.0 Power-Up Troubleshooting Chart
19.2MHz @
TP_19.2MHz?
120MHz @ this
location?
Power-Up
Self Check
To FGU’s troubleshoot
chart for TCXO
No
Yes
No
No
Check All LDOs
1.8V @ E3108
2.8V @ E3107
1.8V @ E3109
2.8V @ E3110
3.3V @ E3106
1.8V @ E3105
1.2V @ E3104
3.65V @ E3103
2.0V @ VR3104-pin3
Analyze U1009 &
U1000 ckts
Check OMAP (U1001) &
MDDR (U2001) IC solder
connections.
Yes
Check Flash & SDRAM
Voltages
1.8V @ C2021 & C2005
Check OMAP (U1001) &
NAND (U2000) IC solder
connections
Yes
Apply power to radio so that DC
voltage is measured 13.6V at
RAW_BAT testpoint
19.2MHz @
C1011?
Check if correct bootloader &
firmware loaded.
Controller
OK