Yamaha RX-V671 Service Manual page 49

C1-3. BUS FPGA
Communication and bus line connection between microprocessor (IC81) and FPGA (IC51) are checked.
OK : No error detected
NG : An error is detected
C1-4. I2C
The I2C (Inter integrated route) bus line connection is checked.
0 : No error detected
1 : An error is detected
C1-5. FPGA RAM
Reading/writing SDRAM (IC52) are checked.
OK : No error detected
NG : An error is detected
C1-6. BUS DIR
Communication and bus line connection between microprocessor (IC81) and DIR (IC924) are checked.
OK : No error detected
NG : An error is detected
RX-V671/HTR-6064/RX-A710
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Error detection of HDMI transmitter (IC61)
Error detection of Video encoder (IC22)
Error detection of Video decoder (IC21)
Error detection of HDMI receiver (IC3)
Error detection of HDMI switch 2 (IC2)
Error detection of HDMI switch 1 (IC1)
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