Maintenance Manual

Maintenance Manual

3.3 FM Module

3.3.1 FM Circuit

Figure 3.3.1 FM circuit (built-in)

Step 1. whether SMD peripheral component of FM is correct, not damaged and missing;

Step 2. whether PCB route is connecting;

Step 3. whether IC U200 is damaged.

3.4 BT Module

Internal BT module ,this module built-in U200-baseband chipset.

Figure 3.4.1 BT circuit

Bluetooth poor performance of the function, not active, not find BT device, next to match the circuit

in normal circumstances, poor bluetooth antenna can lead to poor.

Step 1. whether BT antenna is correctly placed according to guide;

Step 2. whether SMD component of BT Circuit is correct, not damaged and missing;

Step 3. whether PCB route is connecting;

Step 4. whether IC U200 is damaged.