OKIDATA OKIMATE 20 Technical Service Data
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Brand: OKIDATA
Category: Printer
Type: Technical service data
Model: OKIDATA EN3211 , OKIDATA OKIMATE 20
Pages: 39
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SAM§
COMPUTERFACTS'
0K1DATA
MODEL
EN3211
OKIMATE 20
PRELIMINARY
SERVICE
CHECKS
This data provides
the user
with a
time-saving
service tool
which is designed
for
quick
isola-
tion
and repair
of
Computer system
malfunc-
tions.
e.'i
m
I-
o
<
,_
Q
T-
O
Z
m
pri
O
o
CO
Ql
O
Check all
interconnecting
cables
for good
connection
and
correct hook-up
before
making
service
checks.
Always
turn
Printer
Off before
connecting
or
disconnecting
connectors,
boards
or Computer.
Replacement
or
repair of
the Power
Supply,
Driver
Board,
Interface
Board
or
connectors
may be
necessary
after the
malfunction
has
been
isolated.
TEST
EQUIPMENT
Digital
Volt/Ohm
Meter
Resistor,
390
Ohms,
1/2W
Resistor,
30
Ohms,
10W
TOOLS
Head
Cleaning
Equipment
(Ethyl
Alcohol)
Contact
and
Switch
Cleaner
(non-spray
type)
Phillips
Screwdriver
Flat-Blade
Screwdriver
IC Insertion
and
Removal
Tools
28
pin
Low
Wattage
Soldering
Iron
Desoldering
Equipment
REPLACEMENT
PARTS
AND
DESCRIPTION
F
Fuse
2
A
Q1
Transistor
(Power
Supply
Board)
S i
1
Br
i
dge
Rect
i
f i er
SW
0n~0ff
Switch
LI
Coil
R1
Resistor,
5.1
Ohms
3W
M7
Print
Head
01
ROM
IC
Ml
Line
Feed
Motor
M5
Home
Position
Sensor
M2
Carriage
Motor
SW3
Ribbon
End
Switch
M4
Paper
End
Sensor
SAMS
Howard
W.
Sams
& Co.
4300
West
62nd
Slreef,
P.O.
Box
7092,
Indianapolis,
Indiana
46206
U.S.A.
The listing
of
any
available
replacement
part
herein
does not
constitute in
any case
a
recommendation,
warranty
or guaranty
by
Howard
W. Sams
& Co. as to the
quality
and
suitability
of
such replacement
part. The
numbers
of these
parts have
been
compiled
from
information
furnished
to
Howard
W. Sams
& Co.
by the
manufacturers
of the
particular
type of
replacement
part
!isted
-
87CP19021
DATE
11-8?
Reproduction
or use,
without express
permission,
of
editorial or pic-
torial
content,
in any
manner, is
prohibited.
No
patent liability
is
assumed
with
respect
to the
use of the information
contained herein.
©
1987
Howard
W. Sams
& Co.
4300 West
62nd Street,
P.O.
Box
7092, Indianapolis,
Indiana
46206
U.S.A.
Printed in
U.S. of America