Yamaha RX-V675 Service Manual page 49

C2. NETWORK IC CHECK
This menu is used to check the communication and bus line connection between devices related to network.
C2-1. ALL
The synthetic judgment result of sub-menu C2-2 to C2-5 is displayed.
C2-2. LINK CHECK
LAN cable connection is checked.
Connect between NETWORK jack of this unit and LAN port of broadband router with a network cable.
*
When the network condition varies while sub-menu is displayed (e.g., the network is deactivated once), the
correct result will not be displayed. In that case, once turn off the power to this unit, then start up the self-
diagnostic function again and select this menu.
C2-3. PHY (Ethernet PHYceiver) TEST
Communication and bus line connection between PHY (IC955) and NETWORK microprocessor (IC951) are
checked.
C2-4. BUS RAM
Communication and bus line connection between SDRAM (IC952) and NETWORK microprocessor (IC951) are
checked.
C 2 - 1
A L L : O K E x t . J I G
When test result using the "C2-2. LINK CHECK" menu is
NG, the sub-menu C2-2 is NG, "Ext. JIG" is displayed.
OK: No error detected
NG: An error is detected
--: Checking
C 2 - 2
L I N K C H K : O K
OK: Normal
NG: Disconnected
--: Checking
C 2 - 3
P H Y T E S T : O K
OK: No error detected
NG: An error is detected
--: Checking
C 2 - 4
R A M B U S : O K
OK: No error detected
NG: An error is detected
--: Checking
RX-V675/HTR-6066/RX-A730/TSR-6750
49