Tektronix Phaser 840, Service Manual

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4 Phaser 840 and 850 Color Printers
Phaser 850 printer overview
The Phaser 850 Color Printer is an Adobe PostScript Level 3 (Version 3010) color,
solid-ink printer. It also supports color PCL 5C at 600 x 600 dots-per-inch
resolution. The Phaser 850 printer prints at a number of resolutions: A 13.9 page-
per-minute (ppm) Fast Color Mode, a standard 7.9 ppm mode, an Enhanced
mode of 450 x 818 dpi (with dot-size switching) at 4 ppm and a High-Resolution/
Photo mode of 600 x 1200 dpi at 2.2 ppm. The printer also includes a 6.3 ppm Fast
Transparency Mode and a 3.4 ppm Standard Transparency Mode.
All printer models but the standard version feature built-in, automatic two-sided
printing.
Standard Phaser 850N. The base Phaser 850 printer features 136 built-in fonts, and
is equipped with 32 Mbytes of RAM. It can be upgraded to configurations of 64,
128, 192, and 256 Mbytes of RAM using combinations of two 32-, and 64-, and
128-Mbyte RAM DIMMs.
The Phaser 850DP.
The Phaser 850DP printer option upgrades the printer to
64 Mbytes of RAM and includes additional features like 2-sided printing, job
pipelining and First Page Preview mode.
The Phaser 850DX. The extended features DX option has all the features of the
Phaser 850DP printer but includes additional RAM to bring the printer to
128 Mbytes of RAM. It also includes a High-capacity Paper Tray and an internal
IDE hard drive.
Like the Phaser 840 printer, all printers support four available paper trays. They
also support the optional 500-sheet High-capacity Paper Tray Assembly. The
printer can also print seven sizes of handfed envelopes.
A 200-MHz PowerPC processor oversees print engine operations and PostScript
image processing. The printer features a 10/100BaseT Ethernet port (with
support for EtherTalk, Novell NetWare/NDS, TCP/IP, DHCP and Windows Peer-
to-Peer). A USB high-speed serial port is also provided. A rear panel slot allows
customers to install a Token Ring card supporting TokenTalk, Novell NetWare/
NDS and TCP/IP. When inserted, this card also disables the standard 10/
100baseT port. LocalTalk and 10Base2 are not supported by the Phaser 850
printer. A second rear panel slot accommodates an internal IDE hard drive for
print job collation, job accounting, font storage and PDF direct printing.
An integral bi-directional parallel port (IEEE 1284C with ECP mode) supports
printing and also allows connecting a parallel interface scanner for optical
copying support.
Like the Phaser 840 printer, the Phaser 850 printer supports Job Accounting.