Update Firmware; Download Firmware For Dsp (Mode 1); Download Firmware For Cpu (Mode 2) - Marantz SR7300 Service Manual

10. UPDATE FIRMWARE

Software for CPU and DSP can be updated.
Have *SR7300CDR update disc.
There are two mode of download, regarding to the target of software as bellow.
Mode 1: Download DSP's software to 4M Flash-ROM.
This mode is to update the software for DSP.
The target devise is 4M Flash-ROM (Q601) on P604.
SR7300 need to be set download condition, by three front keys.
Mode 2: Download CPU's software to internal Flash-ROM.
This mode is to update the software for DSP.
The target devise is internal fl ash ROM of CPU (QU01) on P604.
The unit needs to be set to writing condition, by pushing internal switch from back-panel.
The following items are required for updating.
RS232C Dsub-9 pin cable (female to female/Straight type)
PC (Windows 98, NT, ME, 2000) with RS-232C port.
Upgrade software to CPU.
Upgrade software to DSP.
Use RS232C Dsub-9 pin cable (female to female/Straight type) to connect PC and the unit.
COM port on PC needs to be set by dialog box for each program. COM port can be set from COM1 to COM5.

Download Firmware for DSP (Mode 1)

1. Put the "DSP upgrade" folder into anywhere on your PC's hard disc.
2. Connect PC and the unit with the RS-232C cable.
3. Turn on the unit.
4. Press ENTER, MUTE and CD buttons simultaneously more than 5 seconds to turn the unit into Loading Mode.
5. "LOADING MODE" will be shown on FLD.
6. Launch "UpgradeDSP.exe" on PC.
7. Set the Baud Rate to 38400 then click Start communication button. If the connection is made successfully, a dialog box
saying "Success to connect" appears and "CONNECTED" is displayed on FLD.
8. Click Send the DSP codes button on the dialog box. Progress status of downloading will be shown on PC and OADING
is displayed on FLD.
9. If downloading is completed successfully, "COMPLETED" is displayed on FLD. And a dialog box saying "Finished the
DSP code transmitting" appears. Click OK and then click CLOSE to close the application.
10. Turn off the unit.

Download Firmware for CPU (Mode 2)

1. Put the "CPU upgrade" folder into anywhere on your PC's hard disc.
2. Connect PC and the unit with the RS-232C cable.
3. Insert a thin rot to the hole and push the switch (SA50) inside to turn on the switch.
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