LG GR-K18PBS Service Manual - Page 17

IC101

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5-2-4. Load/Buzzer driving arctut (4)-Load driving circuit CON1 7 9 r MP 5 7C4/1 AC Ft 3 4 .1.41r1 CON3 B CON2 • MX151112 a NI* OCIFIA DA mar • I I I I I I I I I I I I I 111 I el I I I LX J a P17 rri GMICDM) 24 P15 zs P14 Type of load COMP fan motor Left seasoning heater Right seasoning heater Measuring point (IC7) 13 ON Status OFF 10 11 Within 1V 12V (2) Buzzer delving Circuit (located on display PCB) * Only the buzzer sound for the Lock/Unlock operation is shown in this SVC technical manual. LED MODULE TYPE ; ,033_4191)1_46 ass rf Dom+ 24 P11 (INT1) IC101 (MICUM) P1- 26 P10 (Prim3/rC3iPO03) Status measuring point Ex) Lock: "Ding-D Dong" sound Ex) Lock: "Ding-D-Dong" sound Er-b, Off 45ms 45ms 45ms45ms 70ms 750ms 45ms 45ms 45ms 45ms 70ms 750ms 4 >4 >4 >4 >4 >4 IC101 (Pin 3/61) 5V 5V 5V OV OV 5V 5V IC101 (Pin 2/62) OV OV :41046.5Hz: 1174./Hz W.4 I318.5Hz OV 1588.0Hz :1318.5Hz I 10413.5Hz :4 )0.4

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5-2-4.
Load/Buzzer
driving
arctut
(4)
-Load
driving
circuit
CON1
7
9
r
5
a
P17
I
I
rri
3
I
I
I
I
I
I
I
I
I
I
el
I
I
I
4
.1.41r1
CON3
B
CON2
111
P15
zs
LX
a
J
Type
of
load
COMP
fan
motor
Left
seasoning
heater
Right
seasoning
heater
Measuring
point
(IC7)
13
10
11
Status
ON
OFF
Within
1V
12V
(2)
Buzzer
delving
Circuit
(located
on
display
PCB)
*
Only
the
buzzer
sound
for
the
Lock/Unlock
operation
is
shown
in
this
SVC
technical
manual.
LED
MODULE
TYPE
;
31
,
0349)
_
1146
_
ass
24
P11
(INT1)
rf
Dom
+
IC101
(MICUM)
P
1-
26
(Prim3/rC3iPO03)
measuring
point
Status
Ex)
Lock:
"Ding
-D
Dong"
sound
Ex)
Lock:
"Ding-D-Dong"
sound
Er
-
b,
Off
45ms
45ms
45ms45ms
70ms
750ms
IC101
(Pin
3/61)
IC101
(Pin
2/62)
5V
OV
5V
OV
1046.5Hz:
1174./Hz
W.4
:4
5V
45ms 45ms 45ms 45ms
70ms
750ms
4
>4 >4 >4 >4
>4
5V
OV
5V
I318.5Hz
OV
1588.0Hz
:1318.5Hz
I
10413.5Hz
:4
)0.4
OV