5. Network / Bluetooth / USB
Check the setting
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
congure the settings correctly.
Check that there are no connection restrictions
by MAC addresses, etc.
5.1. Cannot connect to the network
Is the LAN cable correctly inserted?
Insert the LAN cable correctly and then turn on
the power again.
Check the connection environment
Checking the unit
YES
YES
YES
Can the output voltage (5V)
to Q8007 (FET-SW) be con-
rmed?
Can the voltage (5V) be conrmed between pin
2, 3 and pin 4, 5 of N6001?
Is NET5V_POWER (U6201
uCOM 48 pin) "Hi" ?
The circuit of NET5V_POWE
between U6201 and Q8007
are faulty.
The circuit around Q8007
(FET-SW) is faulty.
The circuit between the AC inlet and N6001 is
faulty.
Check the SMPS PCB.
YES
YES
NO
NO
NO
NO
NO
NO
NO
NO
NO
Can the output voltage (1.2 V)
to Q8009 (FET-SW) be con-
rmed?
Is NET3.3V_POWER (U6201
uCOM 135 pin) "Hi" ?
The circuit of NET3.3V_
POWER between U6201 and
Q8009 are faulty.
The circuit around Q8009
(FET-SW) is faulty.
Go to next page.
85
Caution in
servicing
Electrical Mechanical Repair Information Updating