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FAILURE MODE
Flashing
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Problem
Possible Causes
Solutions
• TH1 is open/short or 26, 27
port of Micom(U21) is
open/short.
• TH2 is open/short or 35, 56
port of Micom(U21) is
open/short.
• TH3 is open/short or 34, 56
port of Micom(U21) is
open/short.
• Food spill/soil on touchpads.
• Object placed on touchpad.
• Touch time is long.
• There is a fault with Display.
• Low voltage detection
• Turn the cooktop off using the Power ON/OFF.
Turn cooktop back on using the Power ON/OFF.
• Check the electric resistance TH1
8.13k
Ω
(a-b)
(77˚F/25˚C)
• Change the main pcb
assembly.
• Turn the cooktop off using the Power ON/OFF.
Turn cooktop back on using the Power ON/OFF.
• Check the electric resistance TH2
8.13k
Ω
(c-d)
(77˚F/25˚C)
• Change the main pcb
assembly.
• Turn the cooktop off using the Power ON/OFF.
Turn cooktop back on using the Power ON/OFF.
• Check the electric resistance TH3
8.13k
Ω
(e-f)
(77˚F/25˚C)
• Change the main pcb
assembly.
• Clean the surface.
• Remove object from the touch pad.
• If any one of the keys is touched for more than
10 seconds continuously, this error will be
displayed.
• If water or a metal object is placed on the
touchpad this error will be displayed.
• Turn the cooktop off using the Power ON/OFF.
Turn cooktop back on using the Power ON/OFF.
• Turn the cooktop off using the Power ON/OFF.
Turn cooktop back on using the Power ON/OFF.
• Check the connection of CN2 on Interface PCB.
• This represents low voltage to the cooktop. Call
a licensed electrician.
26
27
U21
TMP86FS49AFG
R71
a
b
1K
+5V
R72
7.5K
TH1
50
NSM3503J400H3Z
C35 0.1uF
35
56
U21
TMP86FS49AFG
R56
7.5k
TH2
50
C21
0.1uF
O20
RLS414B
R80
1K
NSM3503J400H3
+5V
c
d
34
56
U21
TMP86FS49AFG
R56
7.5k
TH3
50
C20
0.1uF
O19
RLS414B
R88
1K
NSM3503J400H3Z
+5V
e
f
LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Содержание LCE3610SB
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