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

Download OKIDATA EN3211 Technical service data

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DISASSEMBLY
INSTRUCTIONS
CABINET REMOVAL
Remove
ribbon cartridge
and
carriage
assembly
cover. Remove
two
screws
located
in front
of
Carriage
assembly
holding
cabinet
top to
chassis.
Push
cabinet
top
toward rear
to re-
lease
tabs
on inside
rear edge
and
lift
up
rear.
When
rear
edge
is clear
of chassis,
move
top
forward
to clear
front tabs
and lift
top
from
Printer.
PRINTER
MECHANISM
REMOVAL
Remove
Control
Panel
cover.
Disconnect
Connectors
CN4 thru
CN8.
NOTE: Lift
up cap on
Connector
CN6 before
pulling
flat ribbon
cable out.
Remove
three-
screws
holding
mechanism
to
cabinet
bottom.
POWER SUPPLY
AND DRIVER
BOARD
REMOVAL
Remove
cabinet
top and
Printer
mechanism.
Remove
two screws
holding
Power
Supply
Board
to
cabinet
bottom.
Push
back
tabs
holding
front
of
Driver
Board
and
lift Driver
and
Power
Supply
Boards
from cabinet.
CARRIAGE
MOTOR
ASSEMBLY
REMOVAL
Remove
cabinet
top.
Disconnect
Connector
CN6
from
Driver
Board.
Remove
two screws
holding
motor
assembly
and remove
assembly.
PAPER
FEED
MOTOR
REMOVAL
Remove
Printer
mechanism.
Disconnect
Connec-
tor
CN8 from
Driver
Board.
Remove
two
screws
holding
Paper Feed
Motor
and remove
Motor.
BELT
REMOVAL
Remove
cabinet
top and
Control
Panel
cover.
Remove
Carriage
Motor
assembly.
Remove
two
springs
from
metal
linkage
going
from
Head
Hold
Solenoid
to
left
belt
gear (one
spring
at
each
end
of
the
link).
Insert
a
flat-blade
screwdriver
between
left belt
gear
and metal
link.
Pry
link and
ribbon
stop lever
off
gear
post,
note
position
of ribbon
stop
lever
for
reassembly.
Remove
belt
from
Print
Head assem-
bly and
gear
pulleys.
RIBBON
REMOVAL
Turn
Power
Off.
Lift
ribbon
access
cover.
Pull
back
on
Print
Head
assembly
until
it
snaps
back.
Lift
used
ribbon
cartridge
out.
Place
new
cartridge
into
compartment,
rear
end
first.
While
lowering
front
end,
make
sure
ribbon
is In
front
of
Print
Head and
behind
ribbon
guides.
Snap
head
back
into
printing
position.
REPLACING
PRINT
HEAD
Remove
ribbon
cartridge.
Pull
back
on
Print
Head
Lock
Lever,
directly
behind
Print
Head.
Lift
Print
Head
straight
up out
of holder.
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