Updating Firmware; Required Tools; Preparation And Precautions Before Starting The Operation; Writing To The Microprocessor - Yamaha RX-V661 Service Manual

RX-V661/HTR-6060/DSP-AX761
I UPDATING FIRMWARE /
After replacing the DSP P.C.B. and microprocessor (IC81)
on the DSP P.C.B. with the replacement parts, update the
firmware according to the following procedure.
* The TI flash ROM (IC51) on the DSP P.C.B. is not sup-
plied as a replacement part.
G Required tools
• Windows 98/2000/Me/XP, PC with a serial port
(RS232C)
• Firmware downloader program
FlashSta.exe (Ver. 2.0): for microprocessor
DSP_FLASHER.exe (Ver. 2.41): for DSP (TI flash ROM)
• Firmware
For microprocessor:
Vx61_xxxx.mot
Vx61_xxxx.id
For DSP (TI flash ROM):
Vx61data1_Verxx_xxx.hex
• RS232C cross cable "D-sub 9 pin female"
(Specifications)
Pin No.2 RxD
Pin No.3 TxD
Pin No.5 GND
Pin No.7 RTS
Pin No.8 CTS
• RS232C conversion adapter (Part No. AAX77610)
• Flexible Flat Cable 9P, 250mm, P=1.25 (Part No.
MF109250)
G Preparation and precautions before starting
the operation
• Download firmware upgrading program and firm-
ware from the specified source to the same folder
of the PC.
• Prepare the above specified RS232C cross cable.
• While writing, keep the other application software
on the PC closed.
It is also recommended to keep the software on the
task tray closed as well.
G Operation Procedures

Writing to the microprocessor

• Writing firmware
1. Turn off the power of main unit and disconnect the
power cable from the AC outlet.
2. Set the switch (SW301) of RS232C conversion
adapter to the "FLASH UCOM" side. (Fig. 1)
18
Pin No.2 RxD
Pin No.3 TxD
Pin No.5 GND
Pin No.7 RTS
Pin No.8 CTS
Pin No.2 RxD
Pin No.3 TxD
Pin No.5 GND
Pin No.7 RTS
Pin No.8 CTS
Pin No.2 RxD
Pin No.3 TxD
Pin No.5 GND
Pin No.7 RTS
Pin No.8 CTS