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
configure 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
YES
Can the D3.3V2 output volt-
age (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.
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
Can the NET3.3V output volt-
age (3.3 V) to Q1071 (FET-SW)
be confirmed?
Can the NET1.25V output volt-
age (1.25 V) to U1070 (DC-DC
Conv.) be confirmed?
Is E_POWER1 (U1018 uCOM
132 pin) "Hi" ?
Is E_POWER4 (U1018 uCOM
135 pin) "Hi" ?
The circuit of E_POWER1
between U1018 and Q1071
are faulty.
The circuit of E_POWER4 be-
tween U1018 and U1070 are
faulty.
The circuit around Q1071
(FET-SW) is faulty.
The circuit around U1070(DC-
DC.Conv.) is faulty.
Go to next page.
76
Caution in
servicing
Electrical
Mechanical
Repair Information
Updating
