Yamaha RX-V681 Service Manual page 28

RX-V681/RX-A760
● Operation Procedures
1. Insert the USB storage device to the USB jack. (Fig. 1)
2. While pressing the "PURE DIRECT" key, connect the power cable to the AC outlet. (Fig. 1)
"MAIN ZONE " key
Power cable
AC outlet
3. The USB UPDATE mode is activated and "USB UPDATE" is displayed. Writing of the firmware starts automatically.
(Fig. 2)
Writing is started.
USB UPDATE
If "ERROR! xxxxxx" is displayed during writing of the firmware, refer to "List of Error Messages" to determine the
*
cause and perform the updating procedure again from the beginning.
4. When writing of the firmware is completed, "UPDATE SUCCESS", "PLEASE..." and "POWER OFF!" are displayed
repeatedly. (Fig. 3)
Writing is completed.
UPDATE SUCCESS
5. Press the "MAIN ZONE z" key to turn off the power. (Fig. 1)
6. Remove the USB storage device from the USB jack. (Fig. 1)
7. Start up the self-diagnostic function and check that the firmware version and checksum are the same as written
ones. (For details, refer to "Confirmation of firmware version and checksum")
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USB storage device
Fig. 1
Writing being executed.
VERIFYING...
S1: Network module section
S2: MAIN (IC90 on DIGITAL P.C.B.) section
S3: Flash ROM for DSP1 (IC926 on DIGITAL P.C.B.) section
S4: Flash ROM for DSP2 (IC930 on DIGITAL P.C.B.) section
S5: Flash ROM for DSP3 section (Not available)
S6: Flash ROM for MAIN (IC86 on DIGITAL P.C.B.) section
Fig. 2
PLEASE...
Fig. 3
"PURE DIRECT" key
USB jack
Sx-X:XX%
POWER Off!