Yamaha RX-A760, Service Manual

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RX-V681/RX-A760
RX-V681/RX-A7
60
●
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)
3. The USB UPDATE mode is activated and “ USB UPDATE ” is displayed. Writing of the firmware starts automatically.
(Fig. 2)
* 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)
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
”
)
Writing is completed.
Fig. 3
UPDATE SUCCESS PLEASE... POWER Off!
Writing is started. Writing being executed.
Fig. 2
USB UPDATE VERIFYING... Sx-X:XX%
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. 1
USB storage device
"PURE DIRECT" key
USB jack
"MAIN ZONE " key
Power cable
AC outlet