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Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
INTERNAL STRUCTURE OF THE PICK-UP
1. BLOCK DIAGRAM OF THE PICK-UP (HOP-7232TL)
2
1
3
4
5
8
6
7
26
29
30
7
8
9
10
11
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
17
12
13
14
15
16
18
19
21
22
1
2
3
4
5
6
24
25
27
28
2
3
4
5
6
7
8
15
14 13 12 11 10
20
22
8
9
10
11
12
13
14
7
6
5
4
3
2
1
24
26
28
19
21
23
27
17
25
9
1
20
16
23
Vdd(LDD)
Gnd(Temp)
Temp
Gnd(FM)
FM
Vref
SelCD
Vcc(FM)
Gnd(OEIC)
RF-
RF+
Vc(OEIC)
E2+F2
C
A
E1+F1
E4+F4
D
B
E3+F3
Gnd(OEIC)
Vcc(OEIC)
GainSw
Gnd(LDD)
ENBL
IR
I1
I2
I3
W1DIS
W1DISN
W2DIS
W2DISN
Tilt-
Tilt+
TR-
TR+
AF-
AF+
W3DIS
W3DISN
OSCEN
OSCENN
Vdd(LDD)
Gnd(LDD)
18
CD-VR
IC2 FM
IC1
LDD
DVD-LD
CD-LD
Disc side
Top View
IC3
OEIC
F4
D
C
A
B
F3
F1
F2
E4
E3
E1
E2
DVD-V
R
In
High Out
Low Out
Vref
Out
Gnd
Vcc
-
+
-
+
High Gain
ᵏ
High
Low Gain
ᵏ
Low
SW
R14 0
R15 0
C16
R8
R7
R6
R5
R4
R3
R2
R1
R12
C1
C2
ENBL
R9
R10
R11
C9
C8
C6
C18
C19
C7
EF4
EF1
Ao
Bo
EF2
RF+
RF-
Gnd
Do
Vcc
Vc
Co
EF3
Sw
FB2
C10
C11
C15
R16
Thermist
FB1
Vdd2
IOut2
Gnd
IOut1
Vdd1
OutSel
Aadj2
Aadj1
Fadj2
Fadj1
Vdd3
HFM-
HFM+
W1dis+
W1dis-
W2dis+
W2dis-
Gnd
W3dis+
W3dis-
Rdis
Vdd1
NC
InW3
InW2
InW1
InR
C3
C4
C5
C17
Rd