Shopping cart is empty
 
English Polski Spanish 
Search For a Manual
 

(e.g. AA-V20EG JVC, ZX-7 Sony )
PayPal 1000+ rating Secure, Encrypted Checkout.
 
Who's Online
There currently are 5843 guests online.
Categories
Information
Featured Product
Home >> PANASONIC >> NNS744 Service Manual
 
 0 item(s) in your cart 

PANASONIC NNS744
Service Manual


Tweet about this product and get $1.00 of store credit for instant use!
  • Contains Circuit Diagrams
  • Download
  • PDF Format
  • Complete manual
  • Language: English
Price: $4.99

Description of PANASONIC NNS744 Service Manual

Complete service manual in digital format (PDF File). Service manuals usually contains circuit diagrams, printed circuit boards, repair tips, wiring diagrams, block diagrams and parts list. Service Manual ( sometimes called Repair Manual ) is used mainly by technicians.

If You just want to know how to use Your tv, video, mp3 player etc. You should look for Owner's Manual. After placing order we'll send You download instructions on Your email address.

The manual is available in languages:

Not yet ready
You must purchase it first

Customer Reviews
There are currently no product reviews.
Other Reviews
 CCD600 GRUNDIG Service Manual by Jari Väisänen;
This Service manual is very well scanned and its clean to read, no any anti-theft words that un-english could understand. I got my CCD600 working with this manual and it´s clear shematics :)
 HTD550 AIWA Service Manual by Dennis L Thorne;
I was very pleased with the service provided and was surprised at how good the quality was of the manual. I thought it may be a third generation copy or so, but it is as good as the websites that charge 3 times this much. I repair some electronics for family and friends without charge, so this is perfect for me. Thank you very much.
 ICF-7800W SONY Service Manual by Philip Biagioli;
The service was great and the document was also great. Highly recommend!!!! If anyone has a users manual... Please email me. need one. $ [email protected]
 CS-5275 KENWOOD Service Manual by Steve Cuthbertson;
I needed a service manual as the display on my oscilloscope was very dim. I thought I'd give owner-manuals.com a try, as they advertised a huge number of manuals. Sure enough they had one listed. I bought it hoping it would be useful... actually, I bought it hoping it would be readable! I've had manuals from online sources in the past, and been very disappointed. Not this time! An excellent manual, complete, and very readable. Using it I fixed my 'scope, and as such the manual was an investment that paid off manyfold. Do I have any complaints? One very minor one - The circuit diagrams could have been scanned at a higher resolution, as some of the details were a little difficult to make out - not impossible, just not as easy as my old eyes would like! Overall, I'm very satisfied with my manual, and I will certainly be using this company again. Well done.
 HSJ09 AIWA Service Manual by Julian D Hartheimer;
I Have looked for this manual for quiet a while now, I have finally found it here. I believe this is the only place they have them in a very nice scan, pages are very clear to read, some of the pages are a bit tilted but overall it is great to have this manual available for purchase. Thanks

Text excerpt from page 40 (click to view)
CAUTIONS TO BE OBSERVED WHEN TROUBLESHOOTING
Unlike many other appliances, the microwave oven is high-voltage, high current equipment. Though it is free from danger in ordinary use, extreme care should be taken during repair.

CAUTION Servicemen should remove their watches whenever working close to or replacing the magnetron. 1. Check the grounding
Do not operate on a 2-wire extension cord. The microwave oven is designed to be used when grounded. It is inoperative, therefore, to make sure it is grounded properly before beginning repair work.

WARNING Never touch any circuit wiring with your hand nor with an insulated tool during operation. 3. When parts must be replaced, remove the power plug from the outlet. 4.When the 18 Amp fuse is blown due to the operation of short switch: WARNING When the 18 Amp. fuse if blown due to the operation of short switch, you must replace Primary latch switch and short switch. Also replace power relay B (RY1) when the continuity check reads shorted contacts (1-2).
(A) This is mandatory. Refer to �Measurements and Adjustments� for these switches. (B) When replacing the fuse, confirm that it has the appropriate rating for these models. (C) When replacing faulty switches, be sure mounting tabs are not bent, broken or otherwise deficient in their ability to hold the switches.

2. Inverter Warnings

NEW H.V.

DANGER OF HIGH VOLTAGE AND HIGH TEMPERATURE (HOT/LIVE) OF THE INVERTER POWER SUPPLY (U)
This High Voltage Inverter Power Supply circuit supplies very high voltage and very high current for the magnetron tube. Though it is free from danger in ordinary use, extreme care should be taken during repair. As you can see, it looks like a TV flyback transformer, however the current is extremely large and so danger exists because of its high current and high voltages. The aluminum heat sink is also energized with high voltage (HOT), so do not touch when AC input terminal is connected to the power line because one of the IGBT switching power devices (Collector) is directly connected to the Aluminum heat sink. The Aluminum heat sink may be HOT from heat energy; therefore, extreme care should be taken during servicing and replacing. WARNING OF INVERTER POWER SUPPLY (U) GROUNDING Check the High Voltage Inverter Power Supply circuit grounding. This High Voltage Inverter Power Supply circuit board must have a proper chassis ground by the grounding bracket to the chassis ground; otherwise, this H.V. Inverter circuit board will expose very high voltage and cause extreme DANGER! Be sure to have proper grounding by the grounding plate and screws.

5.Avoid inserting nails, wire, etc. through any holes in the unit during operation.
Never insert a wire, nail or any other metal object through the lamp holes on the cavity or any other holes or gaps, because such objects may work as an antenna and cause microwave leakage.

WARNING OF DISCHARGING HIGH VOLTAGE CAPACITORS
Warning about the electric charge in the high voltage capacitors. For about 30 seconds after the oven is turned off, an electric charge remains in the high voltage capacitors in the inverter power supply circuit board. When replacing or checking parts, remove the power plug from the outlet and short the Inverter output terminal of the magnetron filament terminals to the chassis ground with an insulated handle screwdriver to discharge. Please make sure to touch chassis ground side first then short to the output terminals. WARNING
There is high-voltage present, with high-current capabilities in the circuits of the primary, and secondary windings, choke coil and heat sink of the Inverter. It is extremely dangerous to work on or near these circuits with oven energized. DO NOT measure the voltage in the high voltage circuit including filament voltage of magnetron.
- 11 -

MAGNETRON INSULATED HANDLE FILAMENT TERMINAL SCREWDRIVER
Touch chassis side first then short to the terminal of the magnetron filament terminal.

You might also want to buy

$4.99

NNS744 PANASONIC
Owner's Manual

Complete owner's manual in digital format. The manual will be available for download as PDF file aft…
>
Parse Time: 0.157 - Number of Queries: 108 - Query Time: 0.042