Updating Firmware - Yamaha RX-V3900 Service Manual

RX-V3900/DSP-AX3900

■ UPDATING FIRMWARE /

Note) The user memories (sound field parameters, system
memory, tuner presetting, etc.) are kept stored even
when you write the firmware.
When replacing the following parts, be sure to write the
latest firmware.
P.C.B. Ass'y DSP, FUNCTION or D-VIDEO P.C.B.s
IC540 (DSP flash ROM) of DSP P.C.B.
IC402 (Main microprocessor) of FUNCTION P.C.B.
IC103 (VNP2 flash ROM) of D-VIDEO P.C.B.
● Required tools
• USB flash memory
• Firmware (RXV3900-xxxx.bin)
● Operation procedures
1. Download the latest firmware from the specified
download source to PC.
2. Copy the latest firmware into the root folder of the
USB flash memory.
Note) When the firmware is copied into the sub-
folder, it is not possible to write data in it.
3. Insert the USB flash memory to the USB terminal
of this unit. (Fig. 1)
4. Press the "MASTER ON/OFF" switch of this unit
inward to the ON position. (Fig. 1)
5. Connect the power cable to the AC outlet while
pressing the "INFO" key of this unit.
Writing of the firmware is started. (Fig. 2)
"MASTER ON / OFF" switch
Writing is started. /
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"INFO" key
Fig. 1
Writing being executed. /
Fig. 2
Writing of the firmware mode
USB terminal
Writing is completed. /