Motorola A3100 Troubleshooting Manual page 9

• White screen:
• Check LCM damage or not
• Check EMI filter (U4721) SMT
• Check panel voltage VDD 2.8V(C4921_1) & VDDIO 2.6V(C4918_1)
Service Engineeing & Optimization
Level 3 , Rev.1.0
Display Abnormal