Canon AS-100M, AS-100C Field Service Manual

Canon

FIELD SERVICE

MANUAL

CONTENTS

Chapter 1

Outline

Chapter 2 Specifications

Chapter 3

Disassembly/Reassembly and Nomenclature of

Each Section

Chapter A

Installation

Chapter 5

Replacement and Ajustment of Units

Chapter 6

Periodic Maintenance

Chapter 7

Troubleshooting

Chapter 8

Appendix

PREFACE

Differences between first and this version and as shown in following

table:

Model No.

OXXXXX

Model No.

1XXXXX

Three P.C.B.'s in MAIN UNIT

1. CPU P.C.B.

(1) Basic memory of

256KB

(2) Optional memory

1) Chip expansion
(memory)

....

128KB each

2. I/O CONT P.C.B.

3. CRT CONT-X P.C.B.

Two P.C.B.'s in MAIN UNIT

1. CPU+I/O-CONT P.C.B.

(1) Original Formen CPU+I/O-CONT

(2) Basic memory 128KB

(3) Optional memory

1) Expansion board
(memory)

....

128KB,

256KB or 384KB

2) RS 232C-2 expansion

3) RTC expansion

2. CRT-CONT2-X

(1) Gate array

(2) Option (B/W display)

1) Chip expansion (VRAM)

....

32KB

(3) Additional functions of

optional memory is for
B/W display

1) Partial high brightness

2) Partial blink

1. Memory chip expansion
128KB

2. RS232C on I/O MOTHER

3. CENTRONICS interface

4. COMMUNICATION interface

5. POINTING DEVICE

1. Memory board expansion 128KB,
256KB or 384KB

2. RS232C on I/O MOTHER
RS232C-2 on CPU+I/O-CONT

3. CNT I/F-2 on I/O MOTHER

(CENTRONICS)

4. SIO on I/O MOTHER

(Communication)

5. VIDEO RAM chip expansion 32KB
for B/W display

6. POINTING DEVICE

7. RTC

8. CURRENT LOOP

9. 5" HARD DISK

FAN

Below

CRT

Rear
Cover

FAN

Below

CRT

Rear
Cover

B/W display

None None B/W display None

1

Color
display

1

None

Color ^
display

1

UNIT

CRT UNIT B/W

, Normal brightness

UNIT

CRT UNIT B/W

. Normal brightness
. Partial high brightness
. Partial blink

Introduction

This service manual is applicable only to the specified models as shown

below. Abbreviations of models are listed in Table 1.1.1.

Model No.

f ?

□ □ □ □

Sequential numbers

Voltage No.n

1: Fixed

n: 2 120V

3 230V
A + 2A0V
5 -*• 115V

Chapter 1 Outline

1.1 Configurations

1.1.1 System configuration

1.1.2 Models

1.1.3 Software configuration

1 * 2 D e s c r i p t i o n o f F u n c t i o n s

1.2.1 CPU

1.2.2 I/O CONT (I/O Controller)

1.2.3 DISPLAY CONT (Display Controller)

1.2.4 KEYBOARD

1.2.5 5" FDD

1.2.6 8" FDD

1.2.7 PRINTER

1.2.8 I/O MOTHER (option)

1.2.9 RS232C (option)

1.2.10 CENTRONICS (option)

1.2.11 COMMUNICATION (option)

1.2.12.CURRENT LOOP (option)

1.2.13 5" HARD DISK (option)

Chapter 1 Outline

1.1 Configurations

1.1.1 System Configuration

m a i n u n i t

DI SP LA Y

CONT

£

W.ON LY

m i

VRAM
32KBx3

(COLOR)

or

32KBxl

(B/W)

C

rcRr\

B/ W or )

OLOR /

PO WE R
SU PP LY

CPU ♦ I/O-CONT

MAIN
MEMOR Y
128 K B

! RS232C-2*

» S

-----

'

MAX.^12KB_|

RTC "|*I

T-

OPT4

"f r

-----

i r

-- --

-

• i I'

! I OPT3 11 OPT2

>l M
l| II

- 1. L

__________S!________

J O PTS R S232C-2 only

SERI AL BUS

t:

>

(3.6Kb/s)

CE NI TRO NI C S BU S

(142Kb/s)

OP T2. OPT3. OPT4. ARE
USER SE LECTION AC COR DIN G
TO THE FOLLOWING.

5” F DD

FDD BUS f62Kb

MAX. 4 DEVICE S

(USER S ELECTION)

APPL IABLE CONBINATION
OF 5” FDD AN D 8” FD D
ARE FOLLOWING.

I I

----

GT 1

5 3 I

FDD

*1

*2

OPT 4

OPT 3

OPT 2

RS232C

O

0

O

COMMUNICATI ON

O

CENT RONICS

O

CURR ENT LOOP

O

o

o

H.D ISK I/F

O

*3

*2

I * o ' *

l! f II

i

__V__

I *

I

■ »
*5” FDDx2 1

rf '

5*'. FDD
5" FDD + 8"
8" FDD
8" FDD + 8" FDD

I t.-.jp, | 4

1 I** I s »I 9 I

-----

1

I I !a • * * I •

18” FDDx2 *

*3

* i lO ' •

L18

5t r HARD DISK \ |

POWE R S U pPl f

I
i

•

J

APPLIABLE CONBIANTION
OF 5" HAR D D ISK AND 8" FDD
ARE FOLLOWING

5'* HA RD DISK
S'* HAR D DI SK + 5” FDD
5” HA RD DISK + 8" FDD

J . OPTIO N

m mm mm* m m mmm 4

VRAM : VIDEO RAM

*1 AVAIL ABL E AT APR. IN 1983

*2 A VAI LABL E A T MAY IN 1983

Fig. 1.1.1 System Configurations

1-1

1.1.2 Models

Table 1.1.1

Abbrevia
tion

Model

Symbol

Configuration & outline

Remarks

MAIN
UNIT

AS-100C

E21-0021

. 12n color graphic display

. Standard 256KB main memory .

. The interfaces respectively for printer,

keyboard, and floppy disk are incorporated.

AS-100M

E21-0011

. 12" B/W graphic display

. Standard 256KB main memory

. The interfaces respectively for the printer,

keyboard, and floppy disk are incorporated.

KEYBOARD

AS KEYBOARD ASCII A-llll

E21-0040

. ASCII Key + 10-key

5" FDD

Minifloppy disk A-1300

E71-0050

. 2 sides, double density, double tracks,

mini drive x 2

. File capacity: 1.4MB (max)

8" FDD

Floppy disk A-1330

E71-0061

• 2 sides, double desntiy, standard slim
drive x 2

. File capacity: 2.5MB (max)

PRINTER

Dot impact printer A-1200 E71-0081

. 9-pin wire dot, serial

.. 80 characters, 120CPS

. 480-dot image print

DP-7RG and
X-8220A are

applicable

Color printer A-1210 E63-0011

. 4-nozzle inkjet

. 80 characters, 40 CPS

. 560-dot image print

. 7-color print

Note: KSR for AP400/500 is applicable

Option Model Symbol Configuration & outline

Remarks

Optional memory A-1020

E71-0270

• 128KB RAM board

To CPU+I/0-
CONT P.C.B.

Optional memory A-1021 E71-0280

• 256KB RAM board

Optional memory A-1022

E71-0290 • 384KB RAM board

RTC Real time clock A-1002

E71-0310

• With calendar, watch and battery

RS 232C-2

Serial data interface
A-1500II

• RS-232-C interface

VRAM

Video memory A-1004

E71-0320

• For B/W display To CRT-C0NT2-
B/W

I/O MOTHER Expansion board A-1010

E71-0210

• I/O optional MOTHER board

To A-1011

RS232C

Serial data interface
A-1500

E71-0150

• RS-232C interface

CENTRONICS

Parallel data interface
A-1502

E71-0190

• CENTRONICS interface

COMMUNICA

TION

Communication interface
A-1503

E71-0180

• Transmission

5" HARD
DISK

Hard disk A-1350

E71-0331

•'5" hard disk + mini drive x 1

• File capacity of hard disk 8.4MB

• Transfer rate of hard disk max. 500KB

H.DISK I/F:
to A-1011

P.D.

Pointing device A-1100

E71-0260 • Smooth cursor shift device

CURRENT
LOOP

Current loop interface
A-1505

S13-1010

Interface of data transmission by current
mode

*1 Available from April 1983

*2 Available from May 1983

1.1.3 Software Configuration

CP/M -86

SINGLE

USER

SING LE
TASK

ON-LINE
EMULATOR '

UT ILITY
PROGRAMS

/I ncl u ded on \
'CP/M-86 d is k '

LOCAL AREA
NETWORK

MS-DOS

n j

o Act r

oW- bAb lL -

Stan da rd L evel

(C ol o r G ra p hi c, De vi ce H and le r)

------

Extended Le ve l

(5 -In c h Hard D isk S u pp o rt)

c

St an dar d Le ve l ( M at r ix )

Ext end ed L ev el

(C ol o r G ra phic, IS AM)

TZ

St an d ar d Le vel ( IS AM)

Ext end ed L ev el

(C ol o r G ra p hi c)

------

Level I

(T able H andl in g , G rap h)

— — Le ve l H

( F ile H a n dling )

------

Level m

(O N-LIN E, Wordp ro ce ss1ng

------

BSC 1 .2. 3

------

3780

------

3270

------

MCX2CPM

[ F i le C on v erter fr om MCX (CX-1 O S) to t f/M -8 6 ]

------

VOLCOPY

(H ig h-S pe e d Media C op y)

------

FORMAT

(M ed ia F or m at ter)

------

MS2CPM

( F il e Co nve rte r from MS-DOS to C P/M -8 6)

------

SORT/MERGE U t i l i t y

St and ar d Level

Extend ed L ev el

(5 -In ch H ard D i sk Su ppo rt )

St and a rd Le vel

(Gen er al G r ap h ic , Scr ee n E d i tor)

Ext end ed Leve l

(Advanced G r ap h ic )

Level 0 COBOL

St an d ar d L ev el

1-4

1.2 Functional Description

'With AS-100M and AS-100C, the 16-bit y processor 8088 dat bus =

8 bits is used as a CPU. To assure each model of good universality

over programming, both CP/M-86 and MS-DOS of a general-use type

are applied for operating system.

The CRT display (B/W or color) is of a full graphic design.

It displays all images including characters with picture dots.

CNl

&O

•H

fa

1-5

Functional Block Diagram

1.2.1 CPU

16-bit processor 8088 executes the microprogram which has been

loaded previously from floppy disks into the system memory RAM ,

and the ROM (8KB) to control the entire functions.

Setting of system media

Power ON

Start of ROM (8KB)

. Initialization of hardware other than FDD

• controller

. Initial checks (1) RAM check

(2) ROM check
(3) Timer check
(A) Key check

. Clearing of VRAM in display controller

. Initialization of hardware for FDD

controller

. OS loading from the system media into RAM by

DMA controller

I '

Operation of OS (CP/M-86, MS-DOS)

. Henceforth management under OS.

System memory map under the OS

00000H

System ^
memory

(512KB)

80000H'’

90000H

FE000H

FFFFFH

Basic

256KB

00000H

BIOS

/ / / S ' / / / / y Z ' / / s

y/memo ry

OS

VRAM (32KB)

SUB

' / / / / / / / / / / / / / ;

SYSTEM

i f l i f l i z

User

y / Z / / . Y / V / Y / / ,

area

ROM (8KB)

V 7 A Option

Firmware to link
OS to hardwares

32 KB

Fig. 1.2.2 System Memory Configuration

1-6

I SYSTEM BÜSl

A system bus is used for 16-bit processor 8088 to control the entire

system. The system bus consists of a 20-bit address bus with 1 MB

address space, 8-bit data bus, and a control bus for read/write

control and system bus controlled by a microprogram.

The memory area appropriated for 8088 processor is divided into

two as shown in Fig. 1.2.3; One is the system memory area and the

other is I/O memory area.

This memory area division is performed automatically within the same

address area of 20 bits - 1 MB by a microprogram.

00000H

0000H

System
memory
area

I/O memory
area (64 KB)

(1 MB)

FFFFH

FFFFFH

ROM
RAM

Hardware memory area for I/O

controller
Example: Hardware address
for DMA and FDD controller.

VRAM in DISPLAY-
CONT

Fig. 1.2.3

1-7

SYSTEM BUS

— PIC: To control priority sequence over

I/O interruption from either I/O CONT
or I/O MOTHER (option), as well as to
inform the higher interrupt to the pro
cessor.

— DMA: For control of DMA data transfer between

an option device and FDD controller in
I/O CONT and system memory.

— ROM: A 8RB read-only-memory for hardware initia

lizing, initial checking, OS loading, and
p-debugger.

— RAM: A system memory with a capacity of 256KB

expandable by 128KB up to 512KB

--

I/O CONT: See 1-2-2

Option involved in the CUP

System memory (RAM) ... Up to 512KB (max.) by expansion of each

bord 128, 256, 384KB.

Real Time Clock (RTC) ... Data and time control. It functions by

backup of battery when power OFF.

1.2.2 I/O CONT •

I/O CONT modifies the system bus into the I/O bus in order to

control the circuit of device, option device and desplay controller

which are connected to I/O bus.

Device controllers inside I/O controller is connected to I/O bus,

and address is designated to a certain I/O memory area.

Modified is connected with DISPLAY CONT and optional device

controller as I/O BUS.

1-8

SYSTEM BUS m P CONTI With FDC yPD765AC, four floppy disk

drive FDD is controlled via DMA data
transfer. FDD units connected to
this FDD CONT are 5" FDD 5" x 2 and 8"
FDD 8" x 2.

— I CENTRO CONT]

— I TIMER

— I BAUD RATE

Respective interfaces of these FDD
units are different from each other,
so each of these units has its
interface circuit.

Controls the centronics interface of

8-bit parallel data bus and allows

connection of mainly the printer with
a centronics interface.

Software timer for firmware of CPU.

Provides three different frequency
pulse signals which varied by
firmware of CPU.

— I KEY INPUT

Output to change tone of speaker
output and a data transfer clock pulse
to RS 232C of *1.

Converts Key matrix code which is
to be serially transferred from the
keyboard,and, then to the parallel
code.

Converted parallel code is directly
transferred to CPU.

— I SPEAKER AMP I

— T_ RS232C-T]

I/O BUS

Firmware of CPU converts it to
internal code and controls the repeat

function.

500 Hz 4 KHz sound generating circuit

RS232C-2 serial interface (option)

Bus driver and bus control

Option in I/O CONT

RS232C-2

------

Serial data interface output to 0PT5 port.

1-9

1.2.3 DISPLAY CONT

When video memory data (VRAM) [black/white display: 32KB x 1

(VRAM-B) and color display: 32KB x 3 (VRAM-B.G.R)]

Black/white or color display gives a full graphic presentation

of characters or figures. Display control too graphic display

controller (GDC) is yPD 7220D. 32KB x 1 or 32KB x 3 VRAM is

accessable on a time sharing basis either the GDC or the CPU

via the I/O bus.

Picture structure of both black/white and color display is as

shown in Fig. ].2.4.

(color display only)

i--------------1

)=80x8=&40 bit '

AN: 80 characters x 25 lines

Fig. 1.2.4

For black/white and color displays, a pallet display

system is employed and eight different patterns made from 1 or

3 VRAMs enhances display performance. Fig. 1.2.5 shows pallet

display system concept.

I

t

--

R I

0 12... *79 (bytl

640 dots

31920

1-10

VRAM

D01234567

*1

Option

G picture for B/W display

Fig. 1.2.5

Eight different patterns previously set on pallets 0 <\» 7

are selected according to VRAM output -which is sent out

synchronously with the dot timing of a can sweep signal of

separately display.

Black/white display

Referring to Fig. 1.2.5, dot timing is as in Table 1.2.1.

Table 1.2.1

Bit

output

Selected pallet

Output to display

R

G B

-

- 0

Pallet 0

No display

-

~ . Pallet 1

Normal display

Option VRAM-G included

- 1 0

Pallet 2 Partial high brightness display

- 1 1

Pallet 2

•Partial normal brightness blink

Color display

Like the black/white display, depending on the contents of

selected pallets, six different chromatic signals, semi red,

red, semi green, green, semi blue and blue are output.

1-11

For a half-tone chromatic display, two chromatic signals of a

primary color and a semi color are required but no combination

is available between a primary and a semi color of same color

type.

Therefore, a display with 27 different colors is possible as shown

in Fig. 1.2.6.

— Sequence of color combination

27 combinations of 3 colors are
possible as indicated by the solid
line.

Referring to Fig. 1.2.5, eight different patterns are.selected in

advance on the pallets; therefore, eight colors be selected

differently from the 27 colors.

Option in DISPLAY CONT

VRAM

....

Optional chip of 32 KB x 1 for B/W display

1.2.A KEYBOARD

I/O CONT KEY BOARD

KEY

INPUT

CLOCK

-DAT^

-RESi

ROM(1KB)

Key dataRAM(64B)

CPU
80A1

Key matrix

KDO

/i

-------

vKey code

Pointing device

(optional)

O H CM

m

Fig. 1.2.7 Block diagram of the keyboard

1-12

8401 processor Is used for key code generation control and

has a 1KB ROM incorporated to control the timing of key code

generation, selected key code designation, and serial output.

The key matrix comprises of 13 sampling timings, KSO 'v KS12 and

key code KDO 'V KD7 of 8 bits, thus, 13 x 8 » 104 different keys

can be discriminated. Pointing device is connected onto key

matrix with eight keys of 104 appropriated for pointing device.

Concept of key code generation

Key -
pressing

Sampling

Confirmation of key release

when key code is same as

( D , key data IB 8th

bit is "0" are serially

transferred.

©

n _

I

Confirmation of key release
when key code is same

as (3) , key data IB 8th

bit is is "l" are _
serially transferred.

Key data are generated respectively when a key is pressed and

released, then, serially transferred to key input circuit.

CPU converts key data into internal codes. When key release time

exceeds 640ms, CPU automatically generates an internal code con

tinuously as repeat mode.

KEY BOARD option

Pointing device

......

Carsol control for graphic.

1.2.5 5" FDD

The 5" FDD has two built-in MDD-220 units and is connected to

I/O controller via FDD controller, using a star chain.

1-13

FDD Controller also drives the 8" FDD (YD-180 x 2) with same bus

line; therefore, 5" FDD incorporates an interface circuit con

sisting of VFO circuit, condition generator circuit, bus driver/

receiver circuit for common application of one same bus.

Power supply is provided from main unit separately from signal

bus.

1.2.6 8'! FDD

Except for the following, 8" FDD is the same as 5" FDD

(MDD220 x 2).

Drive YD-180 x 2 (daisy chain)

Interface circuit VFO circuit

Power source Built-in

1.2.7 PRINTER

Refer to PRINTER TECHNICAL GUIDE.

1.2.8 I/O MOTHER (option)

The I/O MOTHER is for optional interface and devices to be connected

to I/O bus. I/O mother keeps a 96KB system memory area for optional

use and a 3-port (0PT2, 0PT3, 0PT4) for optional interface addressed

in I/O memory area.

The following optional device and interface are connected to I/O

MOTHER.

o System memory area (90000H - A7FFFH) ... Option use

o I/O memory area

I/O memory area is normally allocated to meet the respective port

select and status read, for optional interface-use by three ports.

1-14

CPU recognizes the optional interface connected to each port

through status read, and I/O memory area is allocated for

individual interfaces via port select.

Table 1.2.2

Option port

Port select

Status read

A8 A7 A6 A5 A4 A3 A2 A1 AO

A8 A7 A6 A5 A4 A3 A3 Al A0

OPT 2

1 0 0 0 Addre8s

•L u u within port

10 1 1 -

OPT3 1 0 0 1 "

1 1 0 0 _

OPT4 . 10 1 0 "

1 1 0 1 -

Note: AO 'v A8 are address buses.

Optional port

Option interface

0PT2

RS232C CENTRONICS CURRENT LOOP

0PT3 RS232C

COMMUNICATION CURRENT LOOP

0PT4

RS232C

H.DISK I/F CURRENT LOOP

1.2.9 RS232C (option)

RS232C serial interface connected to I/O MOTHER.

1.2.10 CENTRONICS (Option)

CENTRONICS interface connected to I/O MOTHER.

1.2.11 COMMUNICATION (Option)

COMMUNICATION interface connected to I/O MOTHER

1.2.12 CURRENT LOOP (Option)

CURRENT LOOP interface connected to I/O MOTHER.

1-1 5

1.2.13 5" HARD DISK (option)

5" HARD DISK consists of a M4863 hard disk, a MDD220 and power

supply unit.

M4863 connects to H.DISK interface circuit which provides in

MAIN UNIT through the disk controller built-in M4863.

MDD-220 connects to FDD CONT through 5"FDD interface circuit.

1-16

Chapter 2 Specifications

2 . 1

MAIN UNIT

2 . 2

5" FDD

2.3

8" FDD

2.4

KEYBOARD

2.5

PRINTER

2.6

Option

I n t e r f a c e

2 . 7

O p t i o n ( O t h e r s )

2.8 General Specification

Chapter 2 Specifications

2.1 MAIN UNIT

Items

Size

(mm)

Description

«A

0

C O

<r
<o

400

15.7"

16.9"

429

__

370 -

14.6"

Remarks

Weight

Black/white: 19.5 k;j.y.0 kg

(431bs)

Color: 23 k;

kg

(50.7 lbs)

Power con
sumption

Black/white: 125W

Color: 150W

CPU

Processor

Control system

Clock

Interruption

ROM capacity

I/O bus

Speaker output

16-bit processor 8088

Microprogram

4 MHz

8 types

8K bytes

(1) Serial bus 36. KB/S
(2) Centronics bus 142 KB/S
(3) FDD bus 62 KB/S

500 Hz to 4 KHz, programmable

Size

12"

No. of dots

640 horizontal dots x 400
vertical dots

Character

AN: 80 characters x

25 lines

Other

functions

Ruled line drawing in
inter-line space, full
graphic smooth scrolling

Option B/W
VRAM 32KB x 1
can be added.
Additional
functions are
artial high
brightness
and partial
blink.
Screen inver
sion

CRT

o

u

04
O

2-1

Items

Description

Remarks

Color Green

Black/

white

VRAM 32 KB x 1

CRT

Other

function

Partial reverse

Color

8 colors selectable

from 27 colors.

O

H

O

CJ

Output
system

Pallet display system

VRAM

32KB x 3/screen

Capacity

256: KB max. 512 KB ' Option memory

MAIN MEMORY

Cycle time

330 ns

for every
expansion of
128 KB

Element

MOS LSI - 64 KB dynamic RAM

User memory

32 KB

Options

VRM set

128/256/384KB MEMORY BOARD

RS 232C-1/RS 232C-2 interface

Refer to 2.6.

CENTRONICS/COMMUNICATION interface

Refer to 2.6.

RTC

set

Refe-r to 2.7.

CURRENT LOOP interface
HARD DISK interface

Refer to 2.6.

Power Source

Input

Output

Effici
ency

Voltage

Frequency

Phase

+5V

+12V

-12V

Connector

AC115V +10%
AC120V +10%
AC230V +10%
AC240V +10%

48 * 440 Hz

Single phase, 2-wire

Max 8A OC provided

Max 2.5A

Max 0.1A

CN3: +5V, +12V, GND

CN4: +5V, +12V, GND

CN5: +5V, +12V, GND

60%

X

B elo v 20 0 m s

OC: Over

Current
Protec

tion

For main

unit

For options

For 5" FDD

Ab ove 20ms

2-2

2.2 5" FDD

Media: Canon-specified MDD. 512DD (512B/sector)

2-3

2.3 8" FDD

Item

Size (mm)

<r
cn

i

□

— 180—

Description

Remarks

Type

2-side,

drive x

double-density,

2

slim type floppy disk

Weight

Power con

sumption

Capacity

15 kg

50W

Total

Track

Sector

1.25MB

8KB

1024B

No. of tracks 77

No. of sectors 8

Recording
density

6816 BPI

Data transfer

speed

500 Kb/s

Recording
system

MFM

Access Time

Seek time

3ms

Settling time

15ms

Latency time

83ms

Error rate

10-12/B

10-6/SEEK

Power source

+24V: 3.0A

+5V: 3.6A

YD-180

1-drive speci

fications
henceforth

In case of
media given in
format of
1024B/sector

Built-in

Media: Canon specified MDD-256D (256B/sector)

2-4

2.4 KEYBOARD

Items

Description

Remarks

Size (mm)

- ^ - J P D J Option refer
to 2,7 .

4-i— — n s

4.5° *\, 8.5°
angle adjust
able

T"

m

00

i—l

c=] c=D c=i p

L

'

-

1 j

a on - T-

: 1 T

—

-

-----

H OU *

-

Weight

2.2 kg

Power con
sumption

Included in the CPU power consumption

Type of keys

See Fig. 2.4.1

Data transfer

speed

3.6 Kb/S

Fig. 2.4.1 Keyboard

2.5 PRINTER

Refer to "PRINTER TECHNICAL GUIDE".

2-5

2.6 Option Interfaces

RS232C

Items

Description

Remarks

Inter-conne c t ion
circuit

AA, AB, BA, BB, CA, CB, CC, CF, DD

(Conform to EIA RS-232-C and

CCITT V-24)

Signal level ±12V -

Data format

5,6, 7 or 8 bits + 1 or 2 stop bit

+ odd/even parity or none.

Data transfer speed

110 ^ 9600 BPS

(1) Asynchronous data transfer
(2) 2-wire or 4-wire public/leased

line

(3) Inter-connection (max, 15 m)

with terminal equipment

1CENTRONICS!

Item

Description

Interface

Conforms to interface produced by CENTRONICS Co.,

standard

Data format

Parallel data

Bit configuration ... 7 or 8 bits

I c o m m u n i c a t i o n !

e
O

•H *H

u C

cü a

o

Synchronization mode

SYN system/start-stop system

Baud rate

300, 600, 1200, 2400, 4800 9600

MODEM synchronization

•H tH

c o
3 M

Error control

CRC check horizontal/vertical parity

6 -u

g a
o o

Communication system

Half-duplex/full duplex

a u

Applicable lines

Public leased communication line

Line configuration

2-wire/4-wire system

Line interface

MODEM interface(JIS C6361)

2-6

I CURRENT LÖÖPl

Available soon

2-7