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Sharp pc-2500 Service Manual page 2

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The
ALL
RESET switch has to be depressed
after
the
execution
of the test program
because
the
data and
pro-
gram in each ROM are not assured of its contents
after the
test.
ROM
to be tested
Key
operation
OK status
(RUM mode)
CPU internal
ROM
CALL&802AI
ENTER
I
11147
(8KB)
CPU enternal ROM1
CALL&8027
I
ENTER
I
10127
(32KB)
CPU external
ROM2
CALL&84F91
ENTER
I
38524
(32KB)
Internally implemented memory test program
The checksum test
program ROM is contained
internally to
test the
BKB CPU
internal
ROM and 32KB
x
2
external
RO
Ms.
2. TEST
PROGRAM
FFFFH
8000H
7000H
6000H
4000H
8KB
ROM
(CPU
internal
)
I
7000H
I
I
DISP 1
I
8KB
RAM
------------
I
7200H
ACK 1
l
Card image
DISP 2
I
------------
16 KB
I
7400H
ACK2
RAM card
1
D!SP
3
I
-----------
7600H
ACK 3
I
8KB RAM
I
DISP 4
I
Card
------------
7800H
ACK 4
I
DISP 5
I
--------
----
7AOOH
ACK 5
4KB
RAM
KEY PORT 1
------------
7COOH KEY PORT 2
~---
___
-~~K_6_
7EOOH
8000H
32 KB ROM
32 KB ROM
ROM
1
ROM 2
BASIC INTERPRETER
Bundled software
2000H
RAM map
OOOOH
o
Graph
printing:
About
11
times,
when
the grap
described in
Page 304 is printed
continuously.
o
Operating temperature:
5
to 40°C
o
Physical dimensions: 297(W) x 210(D) x 18
(depth
in
front) and 45.5 (depth in rear) mm
o
Weight.
About 1.3kg
o
Accessories:
Tape recorder interfacing cable, AC
adaptor
(EA-150). write pen (one each of black, blue,
green,
and
red).
paper
roll
(one
roll),
instruction manual.
-2-
Serial 1/0 functions
Transmission
method:
Asynchronous,
half-duplex
mode
only
Baud
rate:
300,
600,
1200 bps
Parity
check:
Odd,
even,
none
Word size: 7
or
8 bits
Stop
bit:
1
or
2
bits
Connector:
15-pin
connector
for connection
with
external
device
Output signal level: CMOS level (4 ~ 6 volts)
Interfacing signals:
Input
RD,
CS, CD
Output
SD, RS, RR, ER
Others
SG,
FG, VC
Auto power off: About 14.5
minutes
Power
consumption:
6V .....
(DC),
6W
Power
supply:
Internal
rechargeable
battery
(charge
source:
1
OOVAC, 50.60Hz,
with the AC
adaptor
EA-150
in use)
Rechargeable battery operating
time:
About 100
hours
o
Continuous
displaying:
Displaying
"5"
on
48 display
positions (2 rows) under the temperature of
20°C.
o
Intermittent
operation:
The refreshed battery will last
for about
1.5 months, when
operated
one hour per
day,
provided
that
calculator
operation
or
programmed
operation is done 10 minutes out of one hour
with
the
rest of
the
time
(50 minutes)
operated
to display,
without operating the
printer.
o
Printer in operation: About 450
digits,
provided that 20
digits of "5" are printed continuously
under the tem-
perature of 20°C with the character size "b".
Printer:
Printer type: X and Y axis plotting
Print colors: 4 colors of
black, blue, green,
red
(Option:
EA-850C)
Character size:
15
kinds
of
0.8mm x 1.2mm ~ 12mm
x 18mm
Minimum
pen moving
di
s
tance:
0.2mm
Print
speed:
7
characters/second,
maximum
(for
printing with standard character size
"b")
Recording
paper. Paper roll
of less
than
25mm
diameter and 114mm width. (Option:
EA-515P)
Pen moving speed: 73mm/second for X and Y
direc-
tions, 103mm/second for
45°
direction
Dot size:
Display:
Liquid crystal display
1. Text display
5 x 7 dot matrix display (24 positions x 4 rows)
Character size:
3.35(W)
x 4.71
(H)
mm
Character
pitch:
4.08(W)
x 5.44(H) mm (single
dot space)
2. Graphic display
150
x
32
full
dots display
Dot
size:
0.63 square meters
Dot
pitch:
0.68mm
(for
both
directions)
-
PC-
2500

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