Motorola MOTOTRBO XPR 7550e - Page 55

Troubleshooting Charts 5-25
Figure 5-25.Troubleshooting Flow Chart for Bluetooth/WiFi (Sheet 1 of 2)
BT/WIFI not
working.
CPCAP_SW3
(E8103)=1.8V
No
Check SW3_1.8V from
power management IC
(U3000)
DC_SW_BP_3.6V
(E8100)=3.6V?
No
Yes
Inspect 3.6V Switching
Regulator (U3270)
Yes
DIG_PND_IC
(R8112)=1.8V?
Yes
V_SUP_3V3
(E8102)=3.3V
No
DC_LIN_5V
(R8104)=5V?
No
Inspect 5V Digital
Supply (U3311)
Yes
Change 3.3V LDO
(U8100)
Yes
No
Inspect SW or
uProcessor (U1000)
A