Internal Structure Of The Pick-Up; Block Diagram Of The Pick-Up (Hop-7232Tl) - LG RHT497H Service Manual

INTERNAL STRUCTURE OF THE PICK-UP

1. BLOCK DIAGRAM OF THE PICK-UP (HOP-7232TL)
CD-VR
DVD-V
DVD-LD
CD-LD
C6
C7
Disc side
EF4
8
EF1
9
Ao
10
Bo
11
EF2
12
RF+
13
RF-
14
IC2 FM
5
In
6
High Out
7
R
Low Out
8
Vref
C5
C4
C3
C2
IC1
LDD
14 13 12 11 10
15
ENBL
16
Vdd2
17
IOut2
18
Gnd
19
IOut1
20
Vdd1
21
OutSel
22
23 24 25
R11
C8
FB2
Gnd
7
F4 F1
Do
6
F3 F2
Vcc
5
D A
Vc
4
C B
Co
3
E4 E1
EF3
2
E3 E2
Sw
1
Top View
-
4
+
Out
R14 0
3
High Gain ¡ High
SW
R15 0
Low Gain ¡ Low
2
C16
Gnd
-
Rd
+
1
Vcc
C17
R8
R7
R6
R5
R4
C1
9
8
R3
7
w1dis+
6
w1dis-
5
w2dis+
R2
4
w2dis-
Gnd 3
2
w3dis+
1
w3dis-
R1
26 27 28
R12
C9 C10 C11
FB1
IC3
OEIC
C18
C19
4-31
Tilt-
1
Tilt+
2
TR-
3
TR+
4
AF-
5
AF+
6
Gnd(FM)
7
FM
8
Vref
9
SelCD
10
Vcc(FM)
11
ENBL
12
IR
13
I1
14
I2
15
I3
16
Gnd(LDD)
17
w1DIS
18
w1DISN
19
Vdd(LDD)
20
w2DIS
21
w2DISN
22
Gnd(LDD)
23
w3DIS
24
w3DISN
25
Vdd(LDD)
26
OSCEN
27
OSCENN
28
C15
Gnd(Temp)
29
R16
Temp
30
Thermist
Gnd(OEIC)
31
RF-
32
RF+
33
Vc(OEIC)
34
E2+F2
35
C
36
A
37
E1+F1
38
E4+F4
39
D
40
B
41
E3+F3
42
Gnd(OEIC)
43
Vcc(OEIC)
44
GainSw
45