Download Sharp CE-159 Service manual - PC

----SHARP----
SERVICE MANUAL
CE-159
WWW.
PC-1500
.INFO
SHARP CORPORATION
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SERVICE MANUAL
MODEL CE-159
RS-232C Interface
{PC-,1 500 Option)
I. Features .. . ..... .
2. Specifications . . • . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I
3. Precautio ns . . . . . . . . . . . . . . .
.. ... ... .. ... .. . ... ... ... ... ... l
4. Nomenclature and functions . . . . . . . . . • . . . . . . . . . . . . . . . . . . . . . . . . . 2
5. Cell life and replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
6. Mcrno.ry address
4
7 . Memory se t up swi tch . . . . . . . . . . . . . . . . . . . .. . .. . . . . . . . . . .. . . . . 4
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8. CE L59 circuit diagram . . .. . .. . .. . . . . . . .. . . . . . .. . .. . . . . . .. .. . . . . 5
9. CE I59 parts posit ion chart .. .. . .... . . . . . . . . .. . . .. . . . . ... . .. . . . . 6
10. _I_>arts _List & guidcM.. . .. . ..... . .. . .. .. . . .. . . . . . .. . . . . • . . .. . . • .... 7
Insert t h is manual into th e service manual " IPC-150 0 & Opti on"
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1. FEATURES
The CE·l 59 is a program module with an 8 K byte memory capacity RAM (o.apablc of
being entered or read) for use on the PC· 1500. It can be used to as.sign a part of the RAM
capacity as an area for exclusive use in readouts, allowing no entry of new data or pro·
gram change into the area . Even when disconnected from the PC· 1500. the CE· 159
retains the proyrarn contents in th is area due to it~ built-in lithium cell. This is available
for immediate use when reconnected to the computer.
Therefore, if programs are stored in several CE-159 modules, they can l>e executed only
by replacing the modules.
2.SPECIFICATIONS
Model:
Type:
Capacity:
Backup power source:
Battery life:
CE-159
RAM module
8 K bytes
1 DC 3V Lithium cell CR2032
About 5 year { If installed in the PC· 1500)
About 2 yca1s (If removed from the PC· 1500)
(When used at 25<iC ; Life varies w ith operation and environ·
ment.)
o•c to 40°c
40.9 mm {W} x 48.2 mm (0) x 8.5 mm {H)
1·5/8" (W) x 1·29/32" (DI x 11/32" {HI
12 g (0.03 lbs.I (including cell)
Housing case, 3 cover labels. Lithium cell (built into the
CE· 159) and Instruction Manual
Operating temperature:
Outside dtmcnsions:
Weight:
Accessories:
3. PRECAUTIONS
• The PC-1500 can accommodate only one module at a time.
There! o re. with the CE· 159 instal led, another module cannot be used on the PC-1 500.
• When the CE-159 is disconnected fr<>m the PC-1500. the programs and data stored
outside the exclusive readout areas cannot be retained.
If they are needed, record them on tap.e before disconnecting the CE-159 from the PC·
1500,
• With the CE- 159 connected to the PC·1500, the programs. data or reserved contents
prestored in the PC·1500 cannot be used,
Therefore, if needed, record them on tape before connecting the CE-159 to the PC·
1500.
• When the CE·l 59 is connected to the P'C· 1500, be sure to operate the following:
Cl or.r. ])@ @]
PRO mode designation
we I ENTER I
N E W 0 I ENTE• I operation
NE
The
will in itialize the state of the computer (The
initial setting \-.iill be executed).
•
Never touch the Capacity Set Switch when the Set Switch is turned to the "Setting"
( •mr:J ) posit ion ,
• L!J , ~j
Failure to observe th is may result in the following :
•
key operation or LIST command causes an incorrect display.
Executing LIST causes the pape r feed .
•
Part of the program is cleared .
1
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4. NOMENCLATURE AND FUNCTIONS
4, Terrninal cover
'2. CExclusivc Resdovt Area>
S.Ct swi ccti
1. Space cover
3 . Capacity set $witch
2. (Exclusive Readout Areal Set Switch
With the si.vitch posit ioned at the mark • . the me mo(y capacity desig·
nated by t he Capacity Set Switch can be set as an exclusive readou t
area.
With the switch positioned opposi te the mark •, the exclusive readout
area is reset, making the CE· 159 memory operable as RAM.
l·IID I
3. Capacity Set Switch
This switch designates the capacity for u se as on exclusive readout area.
Numbers rcpre· Setting the switch at positions 8, 6 and 4 designates 8 K bytes, 6 K
scnting the ca·
pacitv a:e ind•· bytes and 4 K bytes. respectively. With the Set Switch positioned at
cated on thP. the
the designated capacity becomes an exclusive readou t
area. T his switch may be in any posit ion when t he CE-159 is not used
to d esignate a r'I exc lusive readout area.
•mr::J.
4 . Terminal Cover
This cover p rotects the CE· 159 terminal when th e CE· 159 is not connected to t he PC·
1500. When connected. this te(minal cove( is housed inside the CE· 159.
IRAM Area and Exclusive Readouit Area
'T he RAM area and exc lusive readout a rea arc illustrated as follows:
©
~ 8
Used as only
RAM area
K
u~d
sivc
by tes
M e.xclo·
G>
readout
area
6 K bytes
used as exclu·
sive readout
area
+
····· ·· ·········
@
4
K bytes
u sed 3$ el<clu·
sive roodout
area
Exclu sivt
BASIC
readout
program
area
CE·t59
18 K bvtesl
· · " · · · · · · · · · · ·· 2 character
variables
pimensio"'3
.·
......··
··· ···· ········· variablts
PC·t500 \
(2 K bytes)
~---~
+
2
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RAM
area
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When the CE·159 is used as a RAM area, the reserve area can be secured inside the mod·
ule, as illustrated. (The reserve area inside the PC· 1500 can be cleared.) The BASIC
program is written from the CE· 159, while variables are secured from the PC· 1500.
With the CE· 159 connected to the PC· 1500, the total memory capacity becomes 10 K
bytes including the reserve area.
When U$Cd as a RAM area, this rnemory capacity makes it possible to write a program,
secure variables, char\ge and write the reserve contents.
When an e:xclusive readout area is set, writing or program change in this area becomes im·
possible. T herefore, only the remaining RAM area can be used as variable$. (The reserve
atea can also be made for exclusive use in readouts. making writing o r program change
impossible. t
5. CELL LIFE AND REPLACEMENT
Cell life
The life of a lithium cell in the CE· 159 is about 5 years at normal temperature (25°C)
when the CE· 159 is connected to the computer, Md about 2 years when disconnected
from the computer. The contents of the CE· t 59 can be therefore retained for these
periods of time, respectively.
The CE· 159 is provided with the following data label:
182 0 90 1
.,.,-,.
Year
!191!11
.- - .....
I
,
Month
Dav
This data indicates the day when the lit hium cell is placed in the CE.·159. The cell
life in the CE-159 is about 5 years or 2 years according to this date under normal tem·
perature (25°C}. However. it may be shortened depending on an operating environment
where the temperature is too high or too low. causing the program in the exclusiYe read·
out area to disappear. To prevent this, it is recornmended that you record the program
or data Or'1 tape for storage.
When battery power declines, the following will occur:
(1} Program execution is not pos.siblc.
(2) lncorrrect displays are indicated .
(3) Errors take place.
For trouble-free operation, replace the cell at your nearest Sharp service stations.
Caution should be taken if there is a lapse of more than 5 years from the date on the
cell label or the cell is already cxperded. If installed in the CE· 159, it c;ould cause bat·
terv leakage, resulting in damage to the unit.
3
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6. MEMORY ADDRESS
'S Voo
2000
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RAMt
3000
RMI
RAM.J>
3800
d800
1
RAMi
2800
4000
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RAMl
RtW
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PC 1500
y
RAM
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RNI
( PC: 1500)
7. !MEMORY SET UP SWITCH
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9. CE-159 PARTS POSITION CHART
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10. PARTS LIST & GUIDE
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• The lead o f lithium banery is not
so ldered. (For preven t damage caused
by short c ircuit with aluminum foil
which is used for protect ion from
damage of static electricity.)
• When t he unit stocked long t ime
period, the b attery will b e discharged
it self life of battery will shorter t han
the specification.
7
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SHARP CORPORATION
lf'ldus1rial lnst1uments Grou11
Roliabili1y &. Quali 1y Conlrol Dep;ir!rneni
Yamarokoriya1na. Nafa 6 3 9 · 1 1 , Japan
Occcmber 19 8 2 Prin1ed in Japan
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