6.2 MACHINE CONTROL STATION (Cent’d)
6.2.1.5 KEYBOARD (MODEL DF8203788)
( 1 )
Removal
(a)
Check that AC input power is not supplied [the
SOURCE indication lamp (green) of the power unit
is off], then pull out cables connected to CN21,
CN24,
CN25,
CN26,
CN27,
CN28,
and CN29 of model
JANCD-FC903-1.
(b) Loosen the mounting screws of model
JANCD-FC900B
and remove model
JANCD-FC903 from the control
panel,
(c) Pull out the cables connected to
CN12,
CN13,
CNA,
CNB, and CNC of model JANCD-FC900B.
(d) Loosen the mounting screws and remove model JAN CD-
FC900B from the control panel.
(e) Loosen the mounting screws and remove the keyboard
from the control panel.
(2) Installation
(a) Check the model and REV number of the
replacement module for consistency.
(b) Install keyboard on the control panel.
(c) Install model JANCD-FC900B on the control panel.
(d) Connect the cables to
CN12,
CN13,
CNA, CNB, and
CNC of model JANCD-FC900B.
(e) Install model JANCD-FC903-1 on the control panel.
(f) Insert all remaining cables to the original
positions.
(3)
Checking Functions After Replacement
(a) Check that
+5V,
+12V,
and
+24V
outputs are not
shorted due to overloading.
-.
(b) Apply the first power and second power again and
check that no alarm occurs.
(c)
Check
that keys on
the
control panel can be
operated and the buzzer sounds.
190
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