Pioneer DVD-A02 Servicehandleiding - Pagina 24
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DVD-102, DVD-A02
7. GENERAL INFORMATION
7.1 IC
7 µPC2510GK (IC50: MAIN BOARD ASSY)
• RF and Error Amplifier
• Block Diagram
80
79
1
+
Vref
VCC1
2
Vref
+
gm
–
–
RF
3
Vref
+
Vref
+
gm
–
–
A
4
Vref
+
Vref
+
gm
–
–
C
5
Vref
+
gm
Vref
+
–
–
B
6
Vref
+
Vref
+
gm
–
–
D
7
TEGSEL
78
F
8
E
9
FEBAL
57
Vref
+
Vref
+
gm
–
–
REF
11
+
Vref
GND1
12
Vref
+
gm
–
–
Vref
+
+
gm
Vref
–
–
+
Vref
Vref
+
gm
–
–
LEBAL
58
MUTE
61
AIN
75
+
V DC
COMP
SIG
–
REF
CIN
69
+
V DC
COMP
SIG
–
REF
BIN
67
+
V DC
COMP
SIG
–
REF
DIN
73
+
V DC
COMP
SIG
–
REF
RFIN
71
+
V DC
COMP
–
AGCIN
50
23
24
27
24
77
63
62
76 70 68 74 72
Vref +
–
I/I Converter
+
(RF)
Vref +
–
+
I/I Converter
(RF)
+
Vref +
–
+
I/I Converter
(RF)
+
Vref +
–
+
I/I Converter
(RF)
+
Vref +
–
+
I/I Converter
(RF)
+
Vref +
–
+
I/I Converter
(FE, LE)
+
BAL-VCA
Vref
+
I/I Converter
(FE, LE)
–
BAL-VCA
–
BAL-VCA
I/I Converter
(FE, LE)
–
Vref
–
I/I Converter
(FE, LE)
+
BAL-VCA
Vref
+
Vref
PC
+
–
+
–
–
+
PC
–
Vref
+
PC
+
–
–
+
PC
Vref
–
AMP
DC SHIFT
DET
49
48
47
• The information shown in the list is basic information and may not
correspond exactly to that shown in the schematic diagrams.
66
65
64
15 18
V REG
18k
3.2k
2k
Vref
+
–
Vref
+
–
Gain –6dB
Vref
+
+
–
gm
BAL-VCA
Vref
–
Vref
+
Vref
+
gm
BAL-VCA
–
–
LE
BAL-VCA
Vref +
gm
–
fc=30kHz
FIXED
+
GAIN
–
+
–
Vref
SCONT1
EQCD
To TESW
+
gm
TE-VCA
–
EQCD
EQ
HPF
PEAK DET.
38
39
40
10 13 16
21 22
Vref
+
+
–
50k
–
55k
50k
150k
3p
3p
GD
+
CORRECTION
Vref
FOK
CIRCUIT
(100µsec/V)
–
Gain +6dB
BCA
(5µsec/V)
CDEQ
TE-VCA
Vref
Vref +
–
TE-VCA
Vref
SCONT1
+
Vref
–
+
–
×8
+
×1.5
–
Vref
PEAK DET.
BOTTOM DET.
Vref
Vref
+
PEAK DET.
–
BOTTOM DET.
Gain ×1.2
Vref
HPF (DC CUT)
+
+
gm
–
–
37
34
19 20
1k
LD1
14
17
LD2
60
GND3
54
RFOKOUT
36
+
BCAOUT
53
–
BCAREF
52
TEBAL
56
TEVCA
55
25
3B/PP/DPD
fc=50kHz
+
31
TEOUT1
–
TEOFF
30
+
26
TEOUT2
–
FEOUT
33
32
FEOUT2
29
LEOUT2
LE
28
DPDOUT
59
MIRRIN
42
MIRRSW
45
MIRROUT
41
+
44
DEFECTO
–
VCC2
46
MIRRPB
43
+
35
3TOUT
–
51