Yamaha RX-Z11 Service Manual page 67

16. USB CHECK
VNP2 TEST 1k
1kHz test tone is output.
VNP2 TEST 20Hz
20Hz test tone is output.
VNP2 TEST 20k
20kHz test tone is output.
VNP2 TEST2
1kHz test tone is output.
Test tone output /
USB
16.USB
VNP2 TEST 1k
16.USB
VNP2 TEST 20Hz
16.USB
VNP2 TEST 20k
16.USB
VNP2 TEST2
VNP2 (IC704 DSP P.C.B.)
The tone generator
DSP
NPGA1 (IC743 DSP P.C.B.)
RX-Z11/DSP-Z11
Test tone /
20Hz, 1kHz, 20kHz
TEST2
1kHz
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