Yamaha RX-V671 Service Manual page 51

C1-12. I2C EEPROM
Communication and bus line connection between microprocessor (IC81) and EEPROM (IC83) are checked.
C1-13. BUS RAM
Communication and bus line connection between RAM (IC902, IC903) and BF (NETWORK microprocessor,
IC901) are checked.
C1-14. SYNC SERIAL
Communication and bus line connection between microprocessor (IC81) and BF (NETWORK microprocessor,
IC901) are checked.
C1-15. CLOCK GENERATION
Reading CLOCK IC (IC908) is checked.
C1-16. APL ID CHECK
APPLE coprocessor (IC908) device ID is checked.
OK: No error detected
NG: An error is detected
--: Checking
OK: No error detected
NG: An error is detected
--: Checking
OK: No error detected
NG: An error is detected
--: Checking
OK: No error detected
NG: An error is detected
--: Checking
OK: No error detected
NG: An error is detected
--: Checking
RX-V671/HTR-6064/RX-A710
51