Ricoh FAX2500L SPECIFICATIONS PIF60

PRINTER INTERFACE KIT

TYPE 60

SERVICE MANUAL

This manual contains proprietary in formation that is protected by copyright.
No part of this publication may be rep rod uced in any form without the express
written consent of Ricoh Compan y Ltd .

The contents of th is ma nual are subject to change without notice.
Every effort has been made to ensure the accuracy of this manual. However,

Ricoh Compay Ltd. makes no expre ss or imp lied warranty of any kind in re­gard to the contents of the manua l, and can assume no liab ility fo r any erro rs
or their consequences.

T ra demark Notices

EPSON FX-850 is a trademark of Seiko Epso n Corp oration.
HP LaserJet III is a trad ema rk o f Hewle tt -Packard Company.
Hewlett-Pckard, PCL (Printer Control Language), and GL (Graphic
Language) are trademarks o f Hewle tt -Pa ckard Company.
LAYOUT is a trademark of Clan Systems.
IBM, IBM Proprinter XL2 4E , and IB M P erso na l Compu ter are trademarks of
International Business Machines Corporation.
Centronics is a trademark of Centronics Data Compu te r Corpo ration.

Aug. 11, 1993 OVERALL INFORMATION

SPECIFICATIONS

11. OVERALL INFORMATION

1.1. SPECIFICATIONS

Items Specifications

Printing Resolution 300 dpi
Printing Speed 10 ppm (L T / A4 )
First Page Printout TIme Less than 20 s
Paper Size Letter, Legal, A4
Controller CPU 68000 (16.6 MHz)
RAM Capacity Standard - 1.0 MB

Upgradable to 5.0 MB with an optional memory board
ROM Font - 6.5 MB, Program - 0.5 MB
Host PC Interface 1 Serial Port - RS232C

1 Parallel Port - Centronics
Emulation Modes HP LaserJet III (PCL5)

EPSON LQ, FX (ESC/P)

IBM Proprinter
Printable Area

1/4 inch

(6.4 mm)

1/4 inch

(6.4 mm)

1/4 inch

(6.4 mm)

1/4 inch

(6.4 mm)

Others IC Card Slot - 1

Font Cartridge Slot - 1

Printable Area

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OVERALL INFORMATION Aug. 11, 1993
OVERALL SYSTEM CONTROL

1.2. OVERALL SYSTEM CONTROL

Serial I/F

Parallel I/F

To Printer
Mechanism

Printer Data I/F

Interface

Controller

LIF

Memory

Controller

Oscillator

24.1 MHz

ADDRESS/DATA BUS

Page

Optional

Memory

ADDRESS/DATA BUS

PIF

FCU

CPU

CPU

CPU

Font

ROM

LIOP

IC Card

Font Cartridge

LCD/LED Data

To/ From

Operation Panel

The printer interface kit consists of two PCB s, th e printe r cont rolle r board
(Controller) and the printer interface board (PIF).

1.2.1. Printer Data Path

Through the serial and/or parallel interfa ce(s), the Cont rolle r han dsh ake s wit h
the host(s) and receives print data, using one of the available emulation
modes. Then the CPU creates an imaginary page in the memory using the
fonts stored in the font ROM a nd th e f on t ca rtridge. After one page of print
data has been created, the Controller sends the video data through the video
interface to the LIF on the FCU for print ing . The PIF supplies the 24.1 MHz
clock signal to the LIF for 300 dpi printing.

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Aug. 11, 1993 OVERALL INFORMATION

POWER DISTRIBUTION

1.2.2. LCD/LED Data Path

The three LEDs on the operation panel are always dedicated to the Control­ler. They indicate the status during printing, and are directly co nt rolled by the
Controller.
In Printer Mode (Function 35), the LCD display and four one-touch dial keys
are dedicated to the Controller to access SelecTyp e functions. Within the Se­lecType functions, some settings are not ava ilable because of limitations to
the machine’s hardware. So, the CPU on the PIF monitors the functio n sta tus
and the settings to indicat e on the LCD, and mod ifies the data if necessary
(e.g., Half Letter size paper will not be displayed as a possible paper size ).

1.3. POWER DISTRIBUTI O N

Controller PIF FCU

To ICs

+5VD

DC/DC +24VS

+5VDMON

CPU +5V

+12V

Serial I/F

-12V

The PIF generates +5VD for the Controller. The +5VD line is returned to the
FCU as +5VDMON, so that the FCU can detect whether the printer inte rfa ce
is installed or not.
+5V for the PIF CPU, and ± 12V for the serial interfa ce on the Controlle r are
directly supplied by th e FCU.

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Aug 11th, 1993 DETAILED SECTION DESCRIPTIONS

INTERFACE SPECIFICATIONS

2. DETAILED SECTION DESCRIPTIONS

2.1. INTERFACE SPECIFICATIONS

2.1.1. Parallel Interface

1. Pin Assignments

The printer has an 8-bit parallel int erf ace. The pin assignments are as follows.

Signal

Pin

119

2 - 9 20 - 27 DATA1-8 IN Parallel data bits 1 to 8. A HIGH represents a ’1’.

10 28

11 29 BUSY OUT

12 30 PE OUT A HIGH indicates that the printer is out of paper.
13 - SLCOUT OUT Pulled up to 5 V through a 3.3 kΩ resistance.

14 -

16 - GND - Logic ground
17 - CH-GND - Printer’s chassis ground

19 - 30 - GND - Twisted pair return signal ground level

31 -

32 ­33 - GND - Logical ground

35 - + 5V - Pulled up to 5 V through a 3.3 kΩ resistance.

36 -

Return

Pin

Signal

STROBE IN

ACKNLG OUT

Autofeed IN

INIT IN

ERROR OUT

SLCIN in

Direct-

ion

Description

The strobe pulse from the host to read data in.
The received pulse width must be more than 0.5
µs. Normally HIGH; data reception starts when
the signal goes LOW.

A 10 µs pulse. LOW indicates that data has been
received and the printer is ready to receive more
data. This signal is output as a pair with BUSY.

A HIGH indicates that the printer cannot receive
data. The signal is high when data is entering,
when the printer is off line, and when there is a
printer error.

When LOW, paper is automatically fed when CR
is received (the active signal level can be
selected by a user adjustment). Sampling is
carried out when power is on or when the printer
is initialized at the operation panel.

When this goes low, the printer controller ignores
the STROBE signal.

This becomes low when the printer is out of
paper, off line, or in an error condition.

The DC1/DC3 control codes are valid only when
this signal is HIGH (SLCIN is OFF). This setting
can be changed with a user adjustment.
Sampling is only done when the power is on.

Pins 15, 18, and 34 are no t use d.

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DETAILED SECTION DESCRIPTIONS Aug 11th, 1993
INTERFACE SPECIFICATIONS

Notes: • All interface conditions are based on TTL level. Both the rise and

fall of each signal must be less than 0. 2 µs.

• Data transfer must be carried out by observing the ACKNLG or

BUSY signal. (Data transfer to the printer can be carried out only
after the receipt of the ACKNLG signal or when BUSY is LOW.)

• The "Direction" column refers to the direction of sign al flo w as

viewed from the printer.

• "Return Pin" denotes the twisted-pair return to be conn ect ed at sig-

nal ground level. For the int erf ace wirin g, a twiste d-p air cable
should be used for each signal an d the connection should be com­pleted on the return side. These cables should be shielded and
connected to th e cha ssis o f th e ho st computer and the printer.

2. Interface Timing

The following diagram shows the timing for the parallel interface.

AB

DATA 1-8

VALID VALID

A

STROBE

C

BUSY

ACKNLG

A: 0.2 microseconds minimum
B: 0.1 microseconds minimum
C: 0.15 microseconds maximum (normally 0.12)
D: 0.3 microseconds minimum (normally 0.5)
E: 0.07 microseconds maximum (normally 0.03)
F: 1 to 2 microseconds (normally 1.7)
G: Always at least zero

Signal Level: TTL Compatible

G

D

E

F

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