Check the connection environment
YES
YES
YES
YES
YES
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?
Set the IP address, etc. correctly.
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.
Connect the peripheral devices correctly.
Check the instruction manual of the router and config-
ure the settings correctly.
Check that there are no connection restrictions by MAC
addresses, etc.
NO
NO
NO
5. Network / Bluetooth / USB
5.1. Cannot connect to the network
Is the LAN cable correctly inserted?
Insert the LAN cable correctly and then turn on the pow-
er again.
NO
Check the connection environment
Checking the unit
YES
YES
Can the D3.3V2 output voltage (3.3 V)
to U1067 (DC-DC Conv.) be confirmed?
Can the voltage (5V) be confirmed between pin 2 and pin 5 of
CN4141?
Is D5V_POWER (U1018 uCOM 136 pin)
"Hi" ?
The circuit of D5V_POWER between
U1018 and U1067 are faulty.
The circuit around U1067 (DC-DC.
Conv.) is faulty.
The circuit between the AC inlet and CN4141 is faulty.
Check the SMPS PCB.
NO
NO
NO
YES
90
