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 5998 guests online.
Categories
Information
Featured Product
Home >> RICOH >> AFICIO 450 Service Manual
 
 0 item(s) in your cart 

RICOH AFICIO 450
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 RICOH AFICIO 450 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
 GALAXY MESA 9000 NORDMENDE Service Manual by Tuth Manfred;
Vielen Dank, das war eine prima Sache. Habe das Serviceheft nach 3 Stunden herunterladen können. Qualität OK. Hat mir mit Erfolg bei der Fehlersuche und Reparatur meines Nordmende Galaxy Mesa 9000 geholfen. Ich kann diesen Service bestens weiterempfehlen A very good service. Thank You!
 1257 DUAL Service Manual by jerry martens;
everything i needed. it was easy to get. and this site is now my go to site for manuals.
 BEOMASTER 6000 BANG&OLUFSEN Service Manual by Ronaldus Suykerbuyk;
Quality as promised it arrived fast. No problems what so ever
 MDS-B3 SONY Service Manual by Seb Petrescu;
Good scan, very handy and it also includes the user manual. 122 pages in total.
 SX-PR602 TECHNICS Service Manual by Snorre Toenset;
This manual was exactly what I needed. Detailed, useful and delivered as promised.

Text excerpt from page 38 (click to view)
IMAGE PROCESSING

26 March 1998

Grayscale processing
As stated on the previous page, this process generates up to 256 image density levels for each pixel. To realize this, this machine uses a form of pulse width modulation. In this machine, pulse width modulation consists of the following processes: � Laser diode pulse positioning � Laser diode power/pulse width modulation Laser diode power and pulse width modulation is done by the laser diode drive board (LDDR). Briefly, the width of the laser pulse for a pixel depends on the output level (from 0 to 255) required for the pixel. This machine can also change the laser pulse position (at the left side of the pixel, at the center, or at the right side) automatically, depending on the location of the image pixel so that the edges of characters and lines become clearer. There is no SP mode adjustment for this, unlike in some earlier models.

Binary picture processing
Each video signal level is converted from 8-bit to 1-bit (black and white image data) in accordance with a threshold value. The threshold value can be adjusted with SP 4-904-12.

Error diffusion
This is used only in text/photo mode. The error diffusion process reduces the difference in contrast between light and dark areas of a halftone image. Each pixel is corrected using the difference between it and the surrounding pixels. The corrected pixels are then compared with an error diffusion matrix. Separate error diffusion matrixes are used for copy mode and fax mode. 1. Grayscale processing mode The output image signal level has 9 levels (from white to black). There is only one matrix available. 2. Binary picture processing mode The output image signal level has just 2 levels (white and black).

2-16

You might also want to buy

$4.99

AFICIO 450 RICOH
Owner's Manual

Complete owner's manual in digital format. The manual will be available for download as PDF file aft…
>
Parse Time: 0.612 - Number of Queries: 116 - Query Time: 0.329