Cannot Connect To The Network - Marantz SR6011 Service Manual

5. Network / Bluetooth / USB

5.1. Cannot connect to the network

Check the connection environment
Is the LAN cable correctly inserted?
YES
Check the setting
Are the network settings of this unit correct?
YES
Are peripheral devices such as the router and
hub connected to this unit correctly?
YES
Are the router settings correct?
YES
Checking the unit
Can the voltage (5V) be confirmed between pin
2 and pin 5 of CN903?
YES
NO
Insert the LAN cable correctly and then turn on
the power again.
NO
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.
NO
Connect the peripheral devices correctly.
NO
Check the instruction manual of the router and
configure the settings correctly.
Check that there are no connection restrictions
by MAC addresses, etc.
NO
The circuit between the AC inlet and CN903 is
faulty.
Check the SMPS PCB.
NO
Can the output voltage (3.3V)
Is D5V_POWER (IC151 uCOM
to IC112 (DC-DC Conv.) be
136 pin) "Hi" ?
confirmed?
YES
NO
Can the output voltage (3.3 V)
Is E_POWER1 (IC151 uCOM
to Q1101 (FET-SW) be con-
132 pin) "Hi" ?
firmed?
YES
NO
Can the output voltage (1.25
Is E_POWER4 (IC151 uCOM
V) to IC115(DC-DC Conv.) be
135 pin) "Hi" ?
confirmed?
YES
93
NO
The circuit of D5V_POWER
between IC151 and IC112 are
faulty.
YES
The circuit around IC112 (DC-
DC.Conv.) is faulty.
NO
The circuit of E_POWER1 be-
tween IC151 and Q1101 are
faulty.
YES
The circuit around Q1101
(FET-SW) is faulty.
NO
The circuit of E_POWER4
between IC115 and IC151 are
faulty.
YES
The circuit around IC151 (DC-
DC.Conv.) is faulty.
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