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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PRELIMINARY
SERVICE CHECKS (Continued)
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
r&ar.
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
Connectors
CN4 thru CN8.
cover
.
Dl sconnect
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 Pane!
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
pul
leys.
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
pos 1 1 1 on
.
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.
m
(5D
17
CN3
M7
CN6
M4
(7C)
Jb)@
®
^
©@
GEAR
ASSEMBLY
6A)
CHASSIS-OVERALL VIEV