AR-PB2A (serv.man7). ARPB2A-Service Manual - Sharp Copying Equipment Service Manual (repair manual). Page 28

Setting

Behavior

Automatic 
Switching

Between
Jobs

When receiving data is detected through
a port, sensing data receipt from each
port, considers the port as current (port
automatic sensing processing), and
processes the data received only through
the current port. Then until the job ends
in the situation described below in 1) or
2), the data through the current port is
only processed. After the print job ends,
the port automatic sensing processing
restarts.

1) The print job is completed by the

job-end command.

2) The current port gets into the state of

waiting for data receipt, and after no
data is received for a certain time (I/O
time-out value), print job ends by the
I/O time-out.

After I/O
Time-out

When receiving data is detected through
a port, sensing data receipt from each
port, considers the port as current (port
automatic sensing processing) and
processes the data received only through
the current port. Then until the I/O
time-out in the situation described below
in 1), the data through the current port is
only processed. After the I/O time-out,
the port automatic sensing processing
restarts.

1) The current port gets into the state of

waiting for data receipt, and after no
data is received for a certain time (I/O
time-out value), the print job ends by
the I/O time-out. (When the print job
has not been completed , it ends
simultaneously.

Fixed

Disables
P1284 Port

Receives data only through the Network
(NIC) port.

Disables
Network
(NIC) Port

Receives data only through the P1284
port.

Note: In the I/O time-out, the count starts at the point that data is not

acquired via the receiving buffer. When receiving the data until
the I/O time-out, the count is reset to stop.
In the between jobs setting of the automatic switching, the
conditions that a print job will be completed are as follows.

Job Start

Job End

Common

• PJL JOB command

↔

• PJL EOJ command
• I/O Timeout

PCL

• PJL ENTER 

LANGUAGE 
command (PCL)

• Jobs starting with the 

PCL data

↔

•  UEL command
•  <ESC>E
• I/O Timeout

PS

• PJL ENTER 

LANGUAGE 
command 
 (POSTSCRIPT)

• Jobs starting with the 

PostScript data.

↔

• UEL command
•  <Ctrl-D>
• I/O Timeout

Receiving Port

Job End Data

Job1:

NIC Port

Yes

Job2:

1284 Port

No

Job3:

NIC Port

Yes

1) Automatic Switching - Between Jobs

2) Automatic - After I/O Time Out

The following ROM are supported.

EPROM:

Boot & Simulation Program

Flash ROM: Program &Font data

Boot ROM is selectable between EPROM and Flash ROM #5 using
the jumper switching.

Flash ROM #5

4MB

Main Program

Flash ROM #5

3MB

PCL Roman 80 Fonts
PS Roman 80 Fonts

Flash ROM #5

1MB

Boot/Simulation Program

Switch, LED

Function

Switch

RESET switch
(SW102)

Processor and peripheral device
initialization 

ABORT switch
(SW101)

MMI* generation to processor

LED

POWER-LED
(D114)

PWB power ON. Lighted when
supplying power.

RUN-LED
(D113)

Processor operating status.
Lights up when operating.

Software
status

STO-LED
(D109)

Lights UPD71055-A port 0 bit 4 at
"0."

ST1-LED
(D110)

Lights UPD71055-A port 0 bit 5 at
"0."

ST2-LED
(D111)

Lights UPD71055-A port 0 bit 6 at
"0."

ST3-LED
(D112)

Lights UPD71055-A port 0 bit 7 at
"0."

Job End Data

Wait

1284

NIC

Job1

Receive Job1

Receive Job3

Job2

Job3

Receive Job2

Receive to Buffer

I/O Timeout

1284

NIC

Job1

Receive Job1

Receive Job3

Receive Job2

Job2

Job3

I/O Timeout

I/O Timeout

Receive to Buffer

AR-PB2A

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