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5. Network/Bluetooth/USB
5.1. Cannot connect to the network
Is the LAN cable correctly inserted?
Are the network settings of this unit correct?
Are peripheral devices such as the router and hub connected to
this unit correctly?
Are the router settings correct?
Can the voltage (5V) be confirmed between pin 2 and pin 5 of
CN903?
Can the output voltage (3.3V) to
IC112(DC-DC Conv.) be confirmed?
Check the connection environment
YES
Check the connection environment
YES
YES
YES
YES
Checking the unit
YES
NO
Is D5V_POWER (IC151 uCOM 136 pin)
"Hi" ?
YES
NO
Insert the LAN cable correctly and then turn on the power again.
Set the IP address, etc. correctly.
NO
When the static IP address is used, check that no other devices
have the same IP address and that the subnet mask settings are
correct.
NO
Connect the peripheral devices correctly.
Check the instruction manual of the router and configure the
NO
settings correctly.
Check that there are no connection restrictions by MAC address-
es, etc.
NO
The circuit between the AC inlet and CN903 is faulty. Check the
SMPS PCB.
NO
YES
103
The circuit of D5V_POWER between
IC151 and IC112 are faulty.
The circuit around IC112 (DC-DC.Conv.)
is faulty.
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