Yamaha RX-Z11 Service Manual page 32

RX-Z11/DSP-Z11
Writing to Sub-microprocessor
* When you need to update firmware of the sub-micro-
processor, be sure to write the latest firmware.
G Required tools
• Windows 98/2000/Me/XP, PC with a serial port
(RS232C)
• Firmware downloader program
FlashSta.exe (Ver. 2.0): for microprocessor
• Firmware
Z11_SubCPU_Vxxxx.s2
Z11_SubCPU_Vxxxx.id
• 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)
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.
32
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