Samsung WW7 J5 Series Service Manual page 30

Infor-
Information
mation
Type
Code
• The signals between the
AC
• Incorrect wire Connections
• The signals between the
Communication AC6
• Incorrect wire Connections
• The diagnosis of the I/O
AC2
• The diagnosis of the DR
AC3
• The diagnosis of the Wifi
Communication AC4
• The diagnosis of the LCD
AC5
• Power condition fault.
• An error occurs when
UC
Power
(9C)
• Plug receptacle is used
• Main PBA fault.
28 _ Troubleshooting
Causes
• Check the wire connections and
terminal contacts between the sub
and main PBAs.
sub and main PBAs are
• Check for disconnected wires.
not sensed.
• Check whether the sub PBA
is short-circuited because of
between the Sub and Main
moisture.
PBAs.
• If the main PBA's communication
circuit is faulty, replace it.
• Check the wire connections and
terminal contacts between the
main and Inverter PBAs
main and inverter PBAs.
are not sensed.
• Check for disconnected wires.
• If the main or Inverter PBA's
between the main and
communication circuit is faulty,
inverter PBAs.
replace it.
• Check the wire connections and
terminal contacts between the sub
and main PBAs.
• Check for disconnected wires.
Board communication
• Check whether the sub PBA
error.
is short-circuited because of
moisture.
• If the main PBA's communication
circuit is faulty, replace it.
• Check the wire connections and
terminal contacts between the
main and inverter PBAs.
• Check for disconnected wires.
communication error.
• If the main or Inverter PBA's
communication circuit is faulty,
replace it.
• Check the wire connections and
terminal contacts between the sub
and main PBAs.
• Check for disconnected wires.
• Check whether the sub PBA
communication error.
is short-circuited because of
moisture.
• I f the main PBA's communication
circuit is faulty, replace it.
• Check the wire connections and
terminal contacts between the
main and inverter PBAs.
• Check for disconnected wires.
communication error.
• If the main or Inverter PBA's
communication circuit is faulty,
replace it.
• Check the consumer's power
conditions. : Make sure to check
the operating voltage.
• Connect a tester to the internal
power terminals during the Boil
or Dry operations and observe
the washing machine's operation
under or over voltage is
carefully.
supplied.
: Check the voltages. (An error
occurs when under or over voltage
is supplied.)
(sometimes)
: Check whether a plug receptacle
is used. When the connecting wire
is 1m, a momentary low voltage
may drop up to 10 V.
• Main PBA fault. (sometimes)
Corrective Actions Description of Photo
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