Block Diagram (Overall) - Gestetner A193 Service Manual

2. DETAILED SECTION DESCRIPTIONS

2.1 BLOCK DIAGRAM (OVERALL)

Printer Controller
E n h a n c e m e n t
LocalTalk
I/F
Macintosh
The printer controller is located between the host PC and the machine, and
performs the following functions.
Host Interface
• Receives data (consisting of image data and device control codes such as
tray selection, duplex print, and resolution selection)
• Sends the machine status, such as error conditions and the paper size
loaded in the trays, using the bi-directional parallel interface.
• Handshakes with the PC
NOTE: The printer status can be monitored only when the HostPanel or
WinPanel utility is installed on the PC, and the controller and the PC
are connected with a bi-centronics cable. If the utility is not installed,
or the other interfaces (RS-232C or LocalTalk) are used for
connection to the PC or Macintosh, this feature is not available.
SM
/VIDEO
Printer
Unit
H D D
SIMM Slots
RS-232C Bi-directional
Serial I/F Parallel I/F
P C - A T C o m p a t i b l e
1-3
B I C U
/FGATE
/BD
B D
Mother
B o a r d
L D D R
A643V501.wmf
(A643)