2-9. Micom
TROUBL
E
DIAGNOSIS
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M
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C
m
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S
s
m
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l
b
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P
Bad PCB
All display
Bad connection
Bad connector
Visual check on connector
Reconnect
LCD are off.
between Main PCB
connection from main
connection.
connector.
and display circuit.
PCB to display PCB.
Defective PCB
PCB transformer
Check resistance of PCB
Replace PCB
Applicable to
transformer.
winding is cut.
transformer input and output
transformer or PCB. model without
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B
C
P
temperature fuse is
(If resistance is infinity, trans
burnt out.
winding is cut).
DefectivePCB electric Defective regulator IC
Check voltage at input/output
Replace regulator.
Refer to electric
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.
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.)
5
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8
7
,
2
1
8
7
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.
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explanation.
PCB electric terminal
Check fuse in PCB electric
Replace PCB fuse.
fuse is burnt out.
terminal with a tester.
STR Parts are
Check if STR No. 2 and 3 pins
Replace parts.
Applicable to
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.
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dispenser.
Abnormal
Bad connection
Lead Wire connecting
Check Lead Wire terminals
Reconnect Lead
between Main PCB
main PCB and display
connecting Main PCB and
Wire and directly
operation
and display circuit.
PCB is cut or connector display PCB with a tester.
connect defective
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W
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L
.
d
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b
Defective LCD.
Defective LCD.
Check if all LCD are on when
Replace display
Refer to display
Main PCB Test switch is
PCB.
circuit in circuit
.
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p
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t
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b
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h
w
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o
(
d
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s
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r
p
key and power freezer key are
pressed at the same time for
more than one second.)
electric power.
display LCD
-72-
Summary of Contents for LSC27926
Page 19: ......
Page 25: ...EXPLANATION FOR MICOM CIRCUIT 25 ...
Page 35: ...EXPLANATION FOR MICOM CIRCUIT 35 ...
Page 36: ...EXPLANATION FOR MICOM CIRCUIT 36 ...
Page 37: ...EXPLANATION FOR MICOM CIRCUIT 37 ...
Page 38: ... 38 ...
Page 39: ...EXPLANATION FOR MICOM CIRCUIT 39 ...
Page 40: ... 40 ...
Page 41: ... 41 ...
Page 47: ...4 Ice Maker Circuits ICEMAKERANDDISPENSERWORKINGPRINCIPLESANDREPAIR 47 ...
Page 49: ...CIRCUIT 3854JK1010C 49 ...
Page 83: ...3 6 Brazing Reference Drawings TROUBLE DIAGNOSIS 83 ...
Page 94: ... EV EXPLODED VIEW FREEZER DOOR PART 200A 241F 241G 201A 203A 241G 241E 700A 243A 94 212J ...
Page 101: ...February 2009 MFL62215904 ...