NO.IN FLOW
CHART
PARTS
TO
BE
REF.
CAUSE
CHECK/ADJUSTMENT/REPAIR
AND
ERROR
STATUS
REPLACED
PAGE
#1
1. Keyboard
P-ROM
version
is
Replace
the
keyboard
P·ROM
with the
one
matching
P-ROM
of
keyboard
PSO
Keyboard ROM
NG
is
improper.
main
circuit
board
P·ROM.
displayed.
#2
1. Power
is
not
supplied.
(a)*
Measure
voltage
of
single
phase
power
supply.
"CAUTION MOVING!"
If
the voltage
Is
not
100V
AC
(120V,
220V,
240V
is
not
displayed.
depending
on
where
It
Is
used.).lt
Is
defective.
2. Power switch
or
its cord
Remove
face
cover
on
the left, turn
on
the power with Power supply cord
defective
power plug
unconnected,
then
measure
transformer Breaker
Input terminals of the power
supply
plug
and
power
supply
unit.
If
there
Is
no
continuity, the power
switch
Is
defective.
3. Regulator defective (a)* With
connector
P3
unplugged,
measure
+
5V
Regulator P92
output terminal
of
regulator.
If It
Is
+
sv,
It
Is
normal. Similarly,
check
the +
12Vand
·12V
terminals.
If
ltls
+
12V
or·12V,It
Is
normal.
4. Power harness defective (a)* While
connector
P3
Is
plugged,
check
+
5V,
+
12V
Power supply P92
and
-12V
terminals
on
the
main
circuit board.
If
harness A
they
are
+
sv.
+
12V
and
·12Veach, they
are
Main
circuit board
normal.
5. Keyboard cable defective
Check
that there
Is
continuity between
same
numbers
Keyboard cable
P96
In
double
end
connector
of
keyboard
assembly.
If
there
Is
no
continuity,
It
Is
defective.
6.
Operation
panel defective
Replace
operation
panel.
Operation panel
PSO
7.
Main
circuit board defective
Replace
main
circuit board.
Main
circuit board
P47
8.
Fuse
F2
blown
Replace
fuse.
Fuse
PSS
#3
1. Pulse
motor
harness defective
Check
that
connector
P41s
correctly
connected
and
Pulse
motor
P92
"Missed
X-ORG. PT"
or
proper continuity tested for.
harness
"MissedY-ORG.PT"
is
2. Pulse
motor
power
supply
(a)* With
connector
P2
on
PMD
circuit board
Power supply
unit
P92
displayed.
defective
unplugged,
check
the voltage
of
pins
No.1
(
+)
and
No.5(·).
If
It
Is
not
37V,
It
Is
defective.
3. Pulse
motor
defective
Replace
pulse
motor.
Pulse
motor
4. PMD circuit board defective
Replace
PMD
circuit
board.
PMD circuit board
P48
5. Main circuit board
Replace
main
circuit
board.
Main circuit board
P47
6.
Fuse
F1
blown
Replace
fuse.
Fuse
P58
:#4
1. Home position sensor defective
Check
that
connectors
P9
and
P10
are
correctly
Home position
P93,94
"Overtravel"
is
connected
and
proper continuity tested for.
sensor
displayed.
2.
Over
travel
sensor defective
Check
that
connector
PB
Is
correctly
connected
and
Over
travel
sensor
P93
proper continuity tested for.
3.
Main
circuit board defective
Replace
main
circuit board.
Main
circuit board
P47
-78-
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