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There are currently no product reviews.
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This is exactly the service manual I needed.
Complete with all schematics, partslists, PCB layouts and alignment instructions.
This manual covers both the T-4970 en T-488F Onkyo tuner.
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IF PRINTED CIRQUIT BOARD WIRING VIEW WAS ONE TONE LIGHTER, THEN 5 STAR RANK HAS TO BE MY CHOISE.
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Very usefull, good quality drawings !
Muito útil encontrei todas as informações necessárias.
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Wanting to repair a neighbours tape recorder I needed the necessary information, it makes it easier. Although the service manual is described as "Language : English" To my dismay I found that it is entirely written in German, a language I do not understand. At least I now have the schematics which will help of sorts. I may not use this service again due to the laguage difficulty after all when it states English you do not expect it to be entirely in another language.
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GOOD SERVICE MANUAL.I ALWAYS BUY THERE IF I FIND WHAT I AM LOKING
9. UPDATE FIRMWARE
Software for CPU and DSP can be updated. Have *SR9200CDR 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 (Q671) on P604. SR9200&8200 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 flash 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. 2. 3. 4. 5. 6. 7. Put the �DSP upgrade� folder into anywhere on your PC's hard disc. Connect PC and the unit with the RS-232C cable. Turn on the unit. Press ENTER, MUTE and MULTI-SPK buttons simultaneously more than 5 seconds to turn the unit into Loading Mode. �LOADING MODE� will be shown on FLD. Launch �UpgradeDSP.exe� on PC. 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 �LOADING� 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.
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