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 !

Saturday, 30 March 2019

YAMAHA YST MS30 – YST MS35D – POWERED MULTI-MEDIA SPEAKERS - SCHEMATIC

YAMAHA YST MS30 – YST MS35D – POWERED MULTI-MEDIA SPEAKERS - SCHEMATIC

YST MS30 – YST MS35D – YAMAHA - POWERED MULTI-MEDIA SPEAKERS - SCHEMATIC – USB port operating check - PWB - Wiring Diagram 
Used ICs: ZJY51RS-M5PA (USB in) _ UDA1321PS/N101(      System Control) _ Upc4750HA (Input) _ TDA7370BV(Power Amplifier)
SPECIFICATIONS
Output Power
Satellite 6W+6W (1kHz, 4 ohms at T.H.D.=10%)
Subwoofer 18W (100Hz, 4 ohms at T.H.D.=10%)
Frequency Response
Satellite + Subwoofer 45Hz to 20kHz
Speaker Unit
Satellite : 5cm(2") cone (JA05U8), Magnetic Shielding Type
Subwoofer: 12cm(5") cone (JA1286), Magnetic Shielding Type
Power Supply(AC adapter)
U, C models AC120V/60Hz
A models AC240V/50Hz
B, G models AC230V/50Hz
USB PORT OPERATION CHECK
The YST-MS35D has a USB port. This USB port operation is checked be necessary whether or not normal state.
Installing and verifying the YST-MS35D speaker device drivers
Follow these steps to install the Yamaha YST-MS35D speaker device drivers in your Windows 98 system using the included CD-ROM, and verify that Windows 98 recognizes the installed device drivers and that CD audio, sound generated while using software, and system sounds from the personal computer will be output via the USB port. 
Measuring instruments
 Personal Computer (Windows 98)
 CD-ROM (Accessory)
 USB Cable (Accessory)
 AC adapter (Accessory)
System requirements
For digital audio streaming using a USB connection:
OS: Microsoft Windows 98
CPU: 200 MHz or faster Intel Pentium MMX processor or equivalent
HDD: At least 10 MB available space
CD-ROM drive for driver installation
USB port compatible with USB standards ver 1.0
Installing the speaker device drivers
* Do not connect the PC and the subwoofer using the USB cable before installing the YST-MS35D device drivers.
* Make sure that no other CD-ROM is loaded in the CD-ROM drive and that you quit all application programs.
* Have your Windows 98 CD-ROM ready when you install the Yamaha YST-MS35D speaker device drivers. You may need it in some cases.
* The installation procedure may differ from the following instructions depending on the system environment. Follow the instructions that appear in the dialogue box.
1 Connect the YST-MS35D speakers and connect the AC adapter to the AC receptacle. At this time, do not connect the subwoofer to the computer using the USB cable.
2 Turn on your PC and start Windows 98.
3 Insert the YAMAHA YST-MS35D CD-ROM into the CD-ROM or DVD-ROM drive.  If the Windows 98 Auto run feature is turned on, the installation start up screen appears automatically.
4 Continue with the installation as prompted.  If the Windows 98 Auto run feature is not turned on, you must start the installation manually, as explained below.
5 Double-click the My Computer icon. The My Computer window opens.
6 Double-click the “Yamaha” CD-ROM icon. The installation start up screen appears.
7 Continue with the installation as prompted.
8 After the installation is completed, connect the sub-woofer to the computer using the USB cable.
Verifying the installation of device drivers
After you have installed the device drivers as explained in the previous section, follow the steps below to verify that Windows 98 recognizes these drivers.
* Select “Start,” then select “Settings --> Control Panel” from the menu.
* Double-click “System” in the control Panel to display the “System Properties” panel, select the “Device Manager” tab, then select “View devices by type.”
* Click the plus sign (+) for “Human Interface Devices,” “Sound, video and game controllers,” and “Universal Serial Bus Controller” in the device list, and check to see if “Human Interface Devices,” “YAMAHA YST-MS35D USB Audio,” and “YAMAHA YST-MS35D USB Composite Device”
Note: If an exclamation point (!), or a question mark (?) appears to the left of the USB device name,
check the following:
* Make sure that you have installed the drivers from the included CD-ROM.
* Check to see if the USB cable is connected securely.
* The AC adapter plug is connected to the AC receptacle.
AMPLIFIER SCHEMATIC & PWB 
CLICK ON THE PICTURES TO MAGNIFY
Posted By: FRANK at 05:04
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