RICOH AFICIO 220 Repair Manual

$7.99

RICOH AFICIO 220 - It's a complete service manual, and it's in PDF format. It contains circuit diagrams ( schemas ) etc. It also usually contains parts catalog. After placing order we'll send You download instructions on Your email address. See below for delivery information

The manual is available only in language(s): English

Link to manual will be sent on Your email address after You place order.

This product was added to our catalog on Monday 07 May, 2007.

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Jeff Lewis - 07/24/2006

Received the Hitachi user manual. Happy happy happy! Thanks again.

Grace Towers - 05/22/2008

Very nice clear manual with specifications, exploded views and schematics, been searching for one of these for years. Thanks.

oleg volkozub - 09/25/2008

Very nice clear manual with specifications, thanks!

Henry Seiden - 02/26/2009

I downloaded this product and looked through it quickly with Adobe Reader v9. It is clean and a good copy. Some scanned pages are not perfectly square, but that is a minor complaint. The document schematics and board diagrams are easy to read, of good contrast. The whole file downloaded quickly. This is a good service! Sony charges about $100 for the printed version of the same manual. It is still available through their print-on-demand pro parts system, but why would you do that?

Othmar Herbst - 01/13/2008

PDF contains : - schematics, but a little un-sharp. - disassembly instructions, accurate drawings - description of test-modes

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Click to see text excerpt from the manual

DEVELOPMENT20 September 1999
Toner density sensor initial setting
The TD sensor initial setting procedure is performed automatically when the new
PCU is installed in the machine. During TD sensor initial setting, the TD sensor is
set so that the TD sensor output to the value of SP2-926 (default: 2.3V). This value
will be used as the standard reference voltage (Vts) of the TD sensor.
Toner density measurement
Toner density in the developer is detected once every copy cycle. The sensor
output voltage (Vt) during the detection cycle is compared with the standard
reference voltage (Vts) or the toner supply reference voltage (Vref).
Vsp/Vsg detection
The ID sensor detects the following voltages.
? Vsg: The ID sensor output when checking the drum surface
? Vsp: The ID sensor output when checking the ID sensor pattern
In this way, the reflectivity of both the drum surface and the pattern on the drum are
checked. This compensates for any variations in the reflectivity of the pattern on
the drum or the reflectivity of the drum surface.
The ID sensor pattern is made on the drum by charge roller and laser diode.
Vsp/Vsg is not detected every page or job; it is detected at the following times to
decide Vref.
? During warming up at power on
? If the machine starts warming up after a certain time (default: 30 minutes)
has passed since entering night mode or low power mode
The 30-minute interval can be changed using SP2-995.
Toner supply reference voltage (Vref) determination
The toner supply reference voltage (Vref) is the threshold voltage for the toner
supply determination. Vref is determined using the following data:
? ID sensor output (Vsp/Vsg)
? (Vts or the current Vref) - Vt
Toner supply determination
The reference voltage (Vts or Vref) is the threshold voltage for determining whether
or not to supply toner. If Vt becomes greater than the reference voltage, the
machine supplies additional toner.
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