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 311 guests and 
2 members online.
Categories
Information
Featured Product
Home >> HITACHI >> CST258PC Service Manual
 
 0 item(s) in your cart 

HITACHI CST258PC
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 HITACHI CST258PC 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: English

Not yet ready
You must purchase it first

Customer Reviews
There are currently no product reviews.
Other Reviews
 PDS550 BRAUN Service Manual by HELMUTH wILLERS;
This is a fantastic site, ad I have been a returning satisfied cusumer! Thanx for a great sevice!
 A-8870 ONKYO Service Manual by FREDERIC LIETARD;
Je suis audiophile belge, électronicien et créateur d'enceintes acoustiques. J'ai apprécié la qualité des documents fournis. Ils sont très lisibles, ils peuvent être agrandis sans problème et ils sont complets. Pour moi, c'est parfait. Pour cette qualité, je suis d'accord de payer. Et le système de paiement et d'envoi est simple. Merci, continuez comme cela. Frédéric
 T7 SANSUI Service Manual by Gary Ramey;
The cover page was a little scary, very dark but readable. The remainder of the document was better copy and easily readable. Why would I give 5 Stars? (1) PRICE, (2) AUTHENTICITY, It was the real deal, filled with service information, including the specific information I required. (3) PRIVACY, I didn't start to get slammed with spam. (4) EASY TRANSACTION. Painless. (5) COMPLETE, I have found several manuals here, that I could find nowhere else. (6) I will be a repeat customer!
 TX301 PIONEER Service Manual by Campobasso Maurizio;
Well done!!! I found what I need to have, indeed! Furthermore, due to my hobby is repairing vintage equipments, I added this web site in my desk toolbar because I have in mind to search further service manuals. Thanks a lot www.owner-manuals.com ! Regards, Maurizio
 JP-S7 JVC Service Manual by MESUT BALCI;
Again very good service manual, this time very fast download. AAAAA+

Text excerpt from page 133 (click to view)
CIRCUIT DESCRIPTION A8/D8 SUB PSU CONSOLE {A527590}.
Speaker Box & Chassis removal Remove glass door by unscrewing hinges with a Phillips screw driver. Unscrew two screws on underside of speaker box, and slide speaker box out of console. Unhook 4-way extension block and put to one side. Remove 13 screws from rear of speaker box and two more from underside of speaker box. Remove chassis from speaker box. Unscrew two black screw from PHONO sockets, and one yellow screw fixing main PCB to plastic frame 38V rail is rectified via D17 & smoothed by C99 the voltage is then stepped down from R35 & R25 divider network. The 38V rail also provides the regulation via IC8 providing feedback via IC4 to pin 1 of IC10.

Feedback operation Increase in load demand by secondary rails results in higher voltage feedback on cathode of IC8 in turn rising the voltage on pin 1 of IC10, this voltage is compared to the sawtooth generated on pin 4 via R76 & C95, this produces the gate drive square pulse with larger off time therefore the larger the load demand the larger the duty cycle and vice versa.

Circuit Description The mains is switched on via the relay R54 , the relay is on when the 18v audio signal is up {TV on }. At this point the A.C mains is rectified by D8,D10,11,12 which produces approximately 340v D.C across C58, this is then applied to the drain of Q4 via the primary winding of T1 . Initially the voltage on pin 7 of IC10 will rise to approximately 16v via R15 , D24, and C54 this allows the internal circuitry of IC10 to generate a sawtooth waveform at pin 4 from which a square wave output is obtained at pin 6 . This output is applied to the gate of Q4 turning the mosfet on and off , generating the outputs in the secondary windings of T1. After initial power up pin 7 of IC10 is supplied from the bias winding pin 4 of T1 via D31 for continued operation hence R15 unable to provide running current demand for IC10 [20mA]. A current sense circuit consisting of R74, R75 & 79 feeds back a voltage to pin 3 of IC10,this voltage is compared with an internal reference voltage , of approximately 0.8V should the applied voltage exceed the reference, the pulse width is limited from output pin 6 [chip in over current mode] .In this way Q4 is offered protection from changes in primary current. Secondary overvoltage protection is offered also by R77 , should the feedback be disabled then the secondary voltage will be limited to safe levels, the output from pin 6 will be limited by the internal error amplifier and internal reference . R21 and C31 act as a soft start circuit , this limits the pulse width output from pin 6 during the initial start up period , allowing a gradual rise to full power . ZD3 & 4 will go short if Q4 should go short, protecting IC10. The secondary voltage induced in T1 winding 12/16 is rectified by D15 producing 38V which is smoothed by C40 . Winding 13/16 produces 32V when rectified by D29 & smoothed by C87. The 38V rail is also used to provide a 5V low current rail for muting of the audio amplifiers , in this case the

You might also want to buy

$4.99

CST258PC HITACHI
Owner's Manual

Complete owner's manual in digital format. The manual will be available for download as PDF file aft…
>
Parse Time: 0.166 - Number of Queries: 110 - Query Time: 0.03