Olivetti d-Copia 18MF Service Manual

2-1-10
(2-2) Charging the drum
The following shows a simplified diagram of the electrophotographic components in relation to the engine system.
Charging the drum is done by the main charger unit.
Figure 2-1-10 Charging the drum
As the drum rotates in a clean (neutral) state, its photoconductive layer is given a uniform, positive (+) corona charge
dispersed by the main charger wire.
Due to high-voltage scorotron charging, the charging wire can get contaminated by oxidization after a long run.
Therefore, it must be cleaned periodically from time to time. Cleaning the charging wire prevents print quality problems
such as black streaks.
High voltage PWB
MHVDR1
Main charging output
Main charger unit
Drum
Main charger
wire
Bias
PWB
Engine PWB
YC8-10YC1-A4
MHVDR2
YC7-8YC1-A9
YC-M
Zener
PWB
Service Manual Y104230-6

Olivetti d-Copia 18MF Specifications

General

Resolution color	600 x 600 DPI
Maximum resolution	1800 x 600 DPI
Time to first page (color, normal)	9.5 s
Print speed (black, normal quality, A4/US Letter)	18 ppm
Scan speed	18 sec/page
Dimensions (WxDxH)	496 x 421 x 385 mm
Networking features	Ethernet 10Base-T/100Base-TX
All-in-one functions	Copy, Fax, Scan
Maximum internal memory	0.320 GB
Color all-in-one functions	scan, n
Compatible operating systems	Windows 95, 98, Me, NT 4.x, 2000, XP Apple Mac OS 9.x/OS X 10.x Unix, Linux
Grayscale levels	256
Faxing	Mono faxing
Modem speed	33.6 Kbit/s
Fax coding methods	JBIG, MH, MMR (Fax coding method), MR
Fax speed dialing (max numbers)	100
Total input capacity	250 sheets
Total output capacity	150 sheets
Internal memory	86 MB
Processor model	750CXr
Processor family	PowerPC
Mac compatibility	Yes
Maximum print size	216 x 297 mm
Non-ISO print media sizes	Folio
ISO A-series sizes (A0...A9)	A4, A5
ISO B-series sizes (B0...B9)	B5
Maximum ISO A-series paper size	A4
Supported network protocols (IPv4)	TCP/IP
Standard interfaces	USB 2.0
USB 2.0 ports quantity	1
Sustainability certificates	ENERGY STAR
Market positioning	Home & office