Maintenance Manual

Maintenance Manual

3.2.2 Receiver Circuit

Figure 3.2.2 Receiver circuit

Receiver connect U200 pin T4/U4

Step 1. whether SMD component of Receiver Circuit is correct, not damaged and missing;

Step 2. whether IC U200 is damaged.

3.2.3 Speaker Circuit

Figure 3.2.3: Speaker circuit

Internal Audio PA(Class AB) is built-in BB IC chipset, which output power is no more than

0.7W.

Step 1. whether SMD component of SPK Circuit is correct, not damaged and missing;

Step 2. whether PCB route is connecting;

Step 3. whether IC U200 is damaged.