LG HMC036KDT1 Service Manual - Page 39

Vertical, operate.

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Electronic Parts Troubleshooting Guide 5, When Vertical - a over does not operate. • Confirm that the Vertical Louver is normally geared with the shaft of Stepping Motor. • If the regular torque is detected when rotating the Vertical Louver with hands = Normal • Check the connecting condition of CN-U/D Connector • Check the soldering condition(on PWB) of CN-U/D Connector Check the operating circuit of the Vertical Louver • Confirm that there is DC +12V between pin D(RED) of CN-U/D and GND. If there are no problems after above checks • Confirm the assembly conditions that are catching and interfering parts in the rotation radial of the Vertical Louver Service Manual 39

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Electronic
Parts
Troubleshooting
Guide
5,
When
Vertical
-
a
over
does
not
operate.
•
Confirm
that
the
Vertical
Louver
is
normally
geared
with
the
shaft
of
Stepping
Motor.
•
If
the
regular
torque
is
detected
when
rotating
the
Vertical
Louver
with
hands
=
Normal
•
Check
the
connecting
condition
of
CN-U/D
Connector
•
Check
the
soldering
condition(on
PWB)
of
CN-U/D
Connector
Check
the
operating
circuit
of
the
Vertical
Louver
•
Confirm
that
there
is
DC
+12V
between
pin
D(RED)
of
CN-U/D
and
GND.
If
there
are
no
problems
after
above
checks
•
Confirm
the
assembly
conditions
that
are
catching
and
interfering
parts
in
the
rotation
radial
of
the
Vertical
Louver
Service
Manual
39