REPAIRING AND NOT THROWING AWAY

REPAIRING AND NOT THROWING AWAY

Richtige Fernseher haben Röhren!

Richtige Fernseher haben Röhren!

In Brief: On this site you will find pictures and technical information about Service Modes, Circuit Diagrams, Firmware Update procedure, Disassemble procedure, Universal remote control set-up codes, Troubleshooting and more....

If you go into the profession, you will obtain or have access to a variety of tech tips databases HERE IT IS Master Electronics Repair !.

These are an excellent investment where the saying: 'time-is-money' rules. However, to learn, you need to develop a general troubleshooting approach - a logical, methodical, method of narrowing down the problem. A tech tip database might suggest: 'Replace C536' for a particular symptom. This is good advice for a specific problem on one model. However, what you really want to understand is why C536 was the cause and how to pinpoint the culprit in general even if you don't have a service manual or schematic and your tech tip database doesn't have an entry for your sick TV or VCR.

While schematics are nice, you won't always have them or be able to justify the purchase for a one-of repair. Therefore, in many cases, some reverse engineering will be necessary. The time will be well spent since even if you don't see another instance of the same model in your entire lifetime, you will have learned something in the process that can be applied to other equipment problems.
As always, when you get stuck, checking out a tech-tips database may quickly identify your problem and solution.In that case, you can greatly simplify your troubleshooting or at least confirm a diagnosis before ordering parts.

Happy repairing!
Today, the West is headed for the abyss. For the ultimate fate of our disposable society is for that society itself to be disposed of. And this will happen sooner, rather than later.

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..............The bitterness of poor quality is remembered long after the sweetness of todays funny gadgets low price has faded from memory........ . . . . . .....
Don't forget the past, the end of the world is upon us! Pretty soon it will all turn to dust!

©2010, 2011, 2012, 2013, 2014 Frank Sharp - You do not have permission to copy photos and words from this blog, and any content may be never used it for auctions or commercial purposes, however feel free to post anything you see here with a courtesy link back, btw a link to the original post here , is mandatory.
All posts are presented here for informative, historical and educative purposes as applicable within fair use. NOTHING HERE IS FOR SALE !

Friday 8 March 2019

MARANTZ SR7005 7.1 CHANNEL AV RECEIVER INITIALIZATION FIRMWARE UPDATE AND POWER AMP CIRCUIT

MARANTZ SR7005 7.1 CHANNEL AV RECEIVER INITIALIZATION FIRMWARE UPDATE AND POWER AMP CIRCUIT


 7.1 CHANNEL AV RECEIVER 

MARANTZ SR7005

INITIALIZATION FIRMWARE UPDATE AND POWER AMP CIRCUIT 


Initializing AV SURROUND RECEIVER
AV SURROUND RECEIVER initialization should be performed when the ucom, peripheral parts of ucom, and Digital P.W.B. are replaced.
1. Turn off the power using ON/STANDBY button.
2. Press ON/STANDBY button while simultaneously pressing SURROUND MODE and AUTO buttons.
3. Check that the entire display is flashing with an interval of about 1 second, and release your fingers from the 2 buttons and the microprocessor will be initialized.
SERVICE PRECAUTIONS
When the Flash Rom (U5302) on the HDMI PWB is replaced make sure, in order to maintain consistency with the Backup Memory, to clear the DUAL BACKUP MEMORY in the following way :
How to clear the Backup Memory
(1) Hold down the "SLEEP" and "AUTO" buttons at the same time for 3 seconds or more.
(2) The FL Display indicates "BACKUP CLEAR" while the memory is being cleared.
VERSION UPGRADE PROCEDURE OF FIRMWARE
How to update by DPMS
You can update by downloading the latest firmware from the Internet.
Connecting to the Network
(1) System Requirement
 Internet Connection by Broadband Circuit
Modem
Router
Ethernet cable (CAT-5 or greater recommended)
Settings

Check for Update and Update
Check if the latest firmware exists. You can also check approximately how long it will take to complete an update.
(1) Press the MENU button on the remote control to display the GUI menu.
(2) Use the cursor buttons to select "Manual Setup" > "Option Setup" > "Firmware Update" > "Update Check".
(3) Press the ENTER buttom.
The latest version of the firmware uploaded to the web is displayed.
If the latest firmware version is on the web, proceed to (4).
If the latest firmware is already installed, press the MENU button to close the menu.
(4) Use the cursor buttons to select "Update", then press the ENTER button.
During update, the power indicator lights red and the GUI screen is shut down. And a rough remaining time is indicated on the display.
When updating is complete the power indicator turns off and normal status is resumed.
(5) Press the MENU button to close the menu
Cautions on Firmware Update
In order to use these functions, you must have the correct system requirements and settings for a broadband Internet connection.
Do not turn off the power until updating is completed.
Even with a broadband connection to the Internet, approximately about 1 hour is required for the updating procedure to be completed.
Once updating starts, normal operations on the SR7005 cannot be performed until updating is completed. Also, setting items of the GUI menu of SR7005 or setting items of the image adjustment may be initialized.
Make a note of the settings before updating, and set them again after updating.
How to update by DWF
Preparations before starting the operation2
(1) Personal Computer (Installed "DFW_0005_SR7005_(Rev.1.0.13)_exe").
(2) RS-232 cable (9P (Male), Straight).
Connection of the AV receiver
(1) Confirm the power on/off switch of the AV receiver is turning off.
(2) Connect the RS-232C cable from PC with the AV receiver

Turn on the AV receiver
Operate the following. Turn on the AV receiver.
(1) Connect the power cable to the AC outlet while simultaneously pushing the "CURSOR 0" button and the "RETURN" button of the front panel.
(2) Confirm the power indicator is green and “WRITTING” is displayed in the front panel.
Run the D&M Firmware Writer
Run the "DFW_0005_SR7005_(Rev.1.0.13)" on desktop of PC.
Communication check
(1) Click the “Check Comm.” button.
(2) When connection is good, then you can see the “Communication check OK.” message.
(3) If connection is not good, then you can see the “Communication error!” message.
Please confirm the following
(a) Check the connection of the AV receiver and PC. (refer to “2.2. Connection of the AV receiver” )
(b) Check the operation mode of the AV receiver. (refer to “2.3. Turn on the AV receiver”)
(c) Check the selection of the RS-232C port number of PC.
Download the firmware
(1) Click the "Load" button.
(2) Download the firmware from the specified download source to PC.
Complete the firmware updating
(1) Click the “Update” button.
(2) When writing of the firmware is completed, the power of this unit turns on automatically and you can see the “Update completed” message.
(3) If you can’t complete the firmware update, please retry the firmware update from “2.3. Turn on the AV receiver”.
Notice:
Please keep the following notice for firmware update.
(a) Keep the PC environment
(b) Avoid the communication cable from the electrical noise source.
(e.g. telephone cable, AC line, a fluorescent light)
(c) Don’t remove cable during update.
(d) Don’t turn off the power during update.
(e) Don’t run other PC application during update.
(f) Stop the resident program on PC (Virus checker and System check utilitu, etc)
(g) Stop the screen saver on PC.
(h) Stop the power save ability on PC.
(i) In case of laptop PC, Use the AC adaptor.
Confirming the firmware’s number after upgraded
After completion of the updating operation, the new version number can confirmed by starting up theSR7005 according to the following procedure.
With the following operation, the SR7005 can be set to the Flash ROM Version-Number Confiemation mode.
Turn on power switch while simultaneously pressing "STATUS" and "RETURN" buttons on the front panel. Every time the "STATUS" button is pressed, version number of the Model, Main, Sub, … are indicated on the front panel section in the following order.

POWER AMPLIFIER CIRCUIT DIAGRAM 
CLICK ON THE IMAGE TO ZOOM IN
Posted By: FRANK at 01:41
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