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 6043 guests 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
 NEMOS 32 LOEWE Service Manual by Matteo Vannini;
Incredibly clear!!!! Well done, complete and wonderful. It could not better than this!!!!
 PA-770 AKAI Service Manual by Franz Steinberger;
Thank You for fast delivery for the sheme. Everything allright. Thanks & best regards Franz
 SE9000 SAMSUNG Service Manual by Matteo Vannini;
again you did a very good job. It was fast too. Photocopy are really readable and clear
 1081 COMMODORE Service Manual by Marco Antonio Romero Garcia;
Probably it never existed a 1081 official service manual from Commodore, it's look more like a NAPCEC service manual & diagrams compilation of the 1084 series and his variants, like the nap6523, 8cm505, 1084S, 1084P and obviously the 1081. It's more complete than other scans and the quality of the scans also are far superior. It has two circuit diagrams variants of the 1081, mono and stereo versions. It doesn't include a diagram for the Philips CM8500 or CM8501, they look like the 1081 but they are slightly different.
 KDL-S40A12U SONY Service Manual by Matteo Vannini;
Rapid, clear well done as all the scheme I downloaded from this site. Great job very functional and very useful

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: 0.16 - Number of Queries: 111 - Query Time: 0.044