Yamaha RX-V681, Service Manual

Page: 51 / 170

51
RX-V681/RX-A760
RX-V681/RX-A7
60
C1-5. FPGA RAM
SDRAM (IC 5 3)
ʼ
s reading/writing are checked
C1-6. DIR BUS
Communication and bus line connection between microprocessor (IC90) and DIR (IC942) are checked.
C1-7. DSP BUS
Communication and bus line connection between microprocessor (IC90) and DSP1 (IC931)/DSP2 (IC932) are
checked.
C1-8. EEPROM
EEPROM (IC82)
ʼ
s reading is checked.
C1-9. INVALID ITEM
Not for service.
C1-10. INVALID ITEM
Not for service.
C1-11. INVALID ITEM
Not for service.
OK: No error detected
NG: An error is detected
C1-5
FPGA_RAM:OK
OK: No error detected
NG: An error is detected
C1-6
DIR B:OK
OK: No error detected
NG: An error is detected
C1-8
EEPROM:OK
C1-9
INVALID ITEM
C1-10
INVALID ITEM
C1-11
INVALID ITEM
OK: No error detected
NG: An error is detected
C1-7
DSP B:OK,OK
DSP1 DSP2