LG TCH-M550, Service Manual

Page: 30 / 37

2-25 2-26
❏
BLOCK DIAGRAM
TU101
11,12
CET85XX
20 4,14
16,17,
18,19
2(LR)
9.4V
14V
24
72, 73, 74,
75, 76, 81
58, 60
29, 31, 35, 37
9,10,11,
12,13,14
7,8,20
1,2
4
5,6,23,26 15,16,17,18
10,14
13,19
6
7
27
28
24,25
22,23
10,14
2
11,14
12,15
7,9
21,23
17,19
3, 5
2, 8, 18, 24
22
Q720,721,722,723
69~72
1~50
77~80
29
14, 19
73,74,75,33,34,7
71,69,68,70
32 2 55 10
11
24 3
90 5 91 4
43
56, 57
66, 67
88, 89
9.8304MHz
39
38
41 42
32.768
15, 16, 17, 18
PICK-UP
CD MECHA
(4404R-C004A)
MOTOR
DRIVE IC
(BA5810FM)
DSP IC
(MN6627933)
RF IC
AN22004A
OP AMP
S4560
RADIO VCC
Q350,ZD313
LINE SW/E.VOLUME
9.4V REG
Q360,ZD361
POWER 5V
Q282,Q283
7.5V REG
Q310,Q351
3.3V REG
IC805
U-COM
uPD789166
KEY MATRIX
RESISTOR
RADER
RESET
IC201
5V CONVERT
Q260, ZD261, D201
REG 10V
IC403
LCD DRIVER
LC75811W
LCD DISPLAY
PHONE MUTE
Q280,281
ACC DETECTOR
Q230,D231,D232
REMOTE
CONTROL
Q320,321
ANT CONTROL
Q390,391
POWER ON
Q380,381
MUTE
CCNTROL
POWER AMP
TA8275H
L-SPEAKER
L-SPEAKER
FRONT
R-SPEAKER
REAR
R-SPEAKER
LINE-OUT
(OPTION)
CDC SIGNAL
PN801 #16
BACK_UP
PN801 #10
PWR_ANT
PN801 #6
REMOTE
PN801 #14
ACC
PN801 #5
PHONE
PN801 #11
DIMMER
2(FL,FR)
2(RL,FR)
2(RL,RR)
4-CH
(FL,FR,RL,RR)