Yamaha RX-Z7 Service Manual page 61

Ext loopback test
This menu is used to check the NETWORK connector.
With the power to this unit turned off, short between pins
No. 1 (Tx+) and No. 3 (Rx+) and between pins No. 2 (Tx-)
and No. 6 (Rx-) of the NETWORK connector.
(Be sure to turn off the power to this unit when shorting
these pins.)
Start up the self-diagnostic function and select this menu.
Note) Be sure to return the shorted pins to their origi-
nal condition after executing this test.
PHY TEST
Connection between PHY (IC118 D-VIDEO P.C.B.) and
VNP2 (IC105 D-VIDEO P.C.B.) is checked.
Line noise measurement 10Mbps
The line noise 10Mbps is measured.
Line noise measurement 100Mbps
The line noise 100Mbps is measured.
8 7 6 5 4 3 2 1
OK: Normal
NG: Abnormal
OK: Normal
NG: Abnormal
RX-Z7/DSP-Z7
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