Yamaha RX-V681 Service Manual page 70

RX-V681/RX-A760
S4. ROM VERSION/CHECKSUM
The firmware version and checksum values are displayed.
The checksum is obtained by adding the data at every 8-bit and expressing the result as a hexadecimal notation.
* Numeric values in the figure are given as reference only.
S4-1
SYS-VER. 0.31
S4-2
FAC-VER. 0.31
S4-3
M-VER.00031
S4-4
M-SUM.0704
S4-5
FR-V.00026
S4-6
FR-S.7292
S4-7
N-VER.0042
S4-8
N-SUM.A0DCBC18
S4-9
D1-V. 1.02r1
S4-10
D1-S.2968AE90
S4-11
D2-V. 0.70A1
S4-12
D2-S.BF76BB66
70
S4-1. SYSTEM VERSION
The firmware version is displayed.
S4-2. FACTORY PRESET
The factory preset version is displayed.
S4-3. MICROPROCESSOR VERSION
The firmware version of MICROPROCESSOR (IC90 on DIGITAL (1) P.C.B.) is displayed.
S4-4. MICROPROCESSOR CHECKSUM
The checksum value of MICROPROCESSOR (IC90 on DIGITAL (1) P.C.B.) is displayed.
S4-5. FLASH ROM VERSION
The firmware version of FLASH ROM (IC86 on DIGITAL (1) P.C.B.) is displayed.
S4-6. FLASH ROM CHECKSUM
The checksum value of FLASH ROM (IC86 on DIGITAL (1) P.C.B.) is displayed.
S4-7. NETWORK MODULE VERSION
The firmware version of Network module is displayed.
S4-8 NETWORK MODULE CHECKSUM
The checksum value of Network module is displayed.
S4-9. DSP1 VERSION
The firmware version of DSP1 (IC931 on DIGITAL (1) P.C.B.) is displayed.
S4-10. DSP1 CHECKSUM
The checksum value of DSP1 (IC931 on DIGITAL (1) P.C.B.) is displayed.
S4-11. DSP2 VERSION
The firmware version of DSP2 (IC932 on DIGITAL (1) P.C.B.) is displayed.
S4-12. DSP2 CHECKSUM
The checksum value of DSP2 (IC932 on DIGITAL (1) P.C.B.) is displayed.