Sharp AR-P13 Service Manual page 101

1.2 Network Connection
Printer Board
Not used
PowerPC 603e
Program
ROM SIMM
8Mbyte
3
SDRAM
16Mbyte
(1) The Print Server Card receives the print data and command signals from a computer through LAN Interface. A transmitting
request is sent to Double Finger (U25) through the Print Server Card Interface (J2).
(2) The received print data and command signals are transmitted to PowerPC 603e (U24) through the Print Server Card Interface
by Double Finger.
(3) PowerPC 603e processes and analyzes the print data relying on the command signals and the print settings saved in
EEPROM (U7). When printing with Internal Font, the font data are retrieved from Program ROM SIMM.
The analyzed print data are transmitted and saved in SDRAM (U51,52) by Double Finger.
(4) The saved data are transmitted to the RECTOR (U13) by Double Finger.
(5) The RECTOR (U13) compresses the print data. The compressed data are transmitted to PLD (U3) by Double Finger.
(6) The PLD transmits the print data via PCI I/F Controller (U2) to the System Board of the machine in DMA through the
Engine Interface (J1,5). System Board comes into operation to activate the Printer Engine and the transmitted print data
are printed.
U7
EEPROM
4Kbit
U24
U51,52
4
U13
RECTOR
U26
PARALLEL
CONTROLLER
2
U25
DOUBLE FINGER
5 6
U3
PLD
Controller
3-2
U2
PCI
I/F
Computer
1
Print
Server
Card
AR-650
System
Board
Printer
Engine