Service manual

GX30

2 – 66

CONFIDENTIAL

18. IrDA (Infrared) communication is not possible.

Set the distance and angle within the specification for the IrDA

communication.

Check in IrDA inspection mode.

Is 2.8 V supplied from Q104 pin 2? IC106 is defective.

Is 2.8 V applied to UN101 pin 6? Q104 is defective or UN101 pin 6 is soldered improperly.

R183 is defective.

Does the send signal (UN101 pin 5) send pulse waves period-

ically?

Is R183 good in appearance and mounted properly?

IC106 is defective.

R185 and C197 are defective.

Is 3.0 V supplied from VCC (UN101 pin 1)? Are R185 and C197 good in appearance and mounted prop-

erly?

IC106 is defective.

Is SD signal (UN101 pin 3) 0.2 V or lower? IC106 is defective.

Does the RxD signal (UN101 pin 4) send pulse waves periodi-

cally?

IrDA port (UN101) is defective.

Is UN101 good in appearance and mounted properly? IrDA port (UN101) is defective or mounted improperly.

Is communication possible after replacing IrDA port (UN101)? IC106 is defective.

IrDA port (UN101) is defective.

YES