NO.
IN
CHAPTER
8
PROBABLE
CAUSES
REPlACEMENT
FLOWCHART
AND
CHECK/
ADJUSTMENT
I
REPAIR
ERROR
STATUS
PARTS
#2
3.
Presser
plate
lifter
(a)
If
the
presser
plate automatically
Presser
plate
If
the
RIW
switch is
switch defective
operates just
byturningthe
power on
lifter switch
pressed,
the
without
any other operator action, the
assembly (2-
indicator lamp on
presser
plate
lifter
switch
is
defective.
stage switch)
the
floppy disk
(b)
Unplug connector
P6
of
the
control box
drive
(FDD)
does
and
press
the
RMI switch.
If
the machine
not
light
and
the
operates normally, the
presser
plate
FDD
does
not
read
lifter
switch
is
defective.
the
floppy disk
4. Floppy disk
drive
Replace
the
FDD.
FDD
data.
(FDD)
defective
#3
1.
Floppy disk
Chec:k
If
error code No.4 appears on
the
Floppy disk
After
a
few
defective
ERROR
indicator.
If
yes,
insert other floppy
seconds
after
the
disk.
If
the
newl~
inserted
flo~y
disk
is
R/W
switch
is
normally read, t e old floppy
tsk
is
pressed,
an error
defective.
code appears
on
2.
Floppy disk drive
Check
if
error code No.4 appears on
the
FDD
the
ERROR
display.
(FDD)
defective
ERROR
indicator.
If
yes,
replace the
FDD.
3.
Main
PCB
defective
Replace
the main
PCB.
Main
PCB
#4
1.
Fuse
blown
(a)
Remove
fuse
No.3
and check
it
for
Fuse
No.2
The
presser
plate
continuity.
If
there
is
no continuity,
(1SA)
will
not
rise when
replace
the
fuse.
the
presser
plate
2.
Power
PCB
(a)*Turn the power
ON
while connector
P8
Power
PCB
lifter
switch
is
stepped on.
defective
of
the control
PCB
is
plugged, then
measure
the voltage.
If
it
is
not
approx.
~
65
VDC,
the power supply
Is
defective.
3.
Presser
plate
lifter
{a)
UnplugconnectorP&ofthecontrol box,
Presser
plate
switch and its cable
then check
it
for
continuity.
lifter
switch
defective
If
the
measured
value
is
not
the
assembly
or
Its
7 1
.------,
(First
followl ng specified value,
the
presser
cable
r.::::;;::;;:;, : l Switch)
plate
lifter
switch or its cable
is
~
rt:=
1..:
,
~
I Presser
defective:
~/..:
oa
or
oo 0 when the
presser
plate
• : (Second
!l:J_;
Switch)
lifter
switch
is
stepped on
or
"c.J
Start
released, respectively.
P6
For
pneumatic specification
(BAS-304A,
311A, 314A,
31
SA,
326A,
326LA,
341A, and
342A)
4.
Main
PCB
defective
(a) Refer
to
#2, 2(a).
Main
PCB
(b) Step on
the
presser
plate
lifter
switch
~-
while pressing
STEP
BACK
switch.
If
an error code appears on
the
ERROR
indicator,
the
main
PCB
is
not
defective.
9
@@l@
(c)* Unplug connector
P8
of
the
control box.
I'T'\
i©©>®
tum
the
power
ON.
then measure
the
~~
voltage
on
J8
while stepping on
the
start
IQ)@@
switch.
If
it
is
not
approx. 24
VDC
12
©@lQI4
between pins 1 (-) and 1 0
(+),and
between pins2 (·)and 10
(+),main
PCB
is
defective.
J8
-17-
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