Sharp CD-C470H Service Manual page 55

IC701 RH-iX0170AWZZ:System Microcomputer (IX0170AW) (2/2)
Pin No. Port Name
71 VLOAD
72-76 P105/FIP15-P101/FIP11 S04-S00
77 P100/FIP10
78-80 P97/FIP9-P95/FIP7
IC501 VHiLC75396E-1:Audio Processor (LC75396E)
IC201 VHiLA2786//-1: Dolby Pro Logic Active Decorder (LA2786)
42 41 40 39
CONTROL
NOISE
GENERAT
LPF
NOISE FILTER
1 2 3
IC202 VHiLV1016//-1: Dolby Pro Passive Decorder (LV1016)
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CD-C470H,C470E,C480H/CP-C470H,C470E,C480H
Terminal Name Input/Output
VLOAD —
Output
G10 Output
G09-G07 Output
48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33
49
LSELO
50
LINVIN1
51
L5
52
L4
53
L3
54
L2
55
L1
56
VDD
57
R1
58
R2
59
R3
R4 60
61
R5
62
RINVIN1
63
RSERO
64
RTIN
1 2 3 4 5 6 7 8
33
38 37 36 35 34
B A B A
CTRIM
B A B A
CMOTE
B A B A
NOISE
CH
VCA VCA
VREF
VCA
VCA
4 5 6 7 8 9 10 11
24 23 22 21 20
VDD
ADM
ADM-CONT
A
B
A
B
40kHz
B
IN-FILTER
L-R
A
20k
B
DEC
50k
1 2 3 4 5 6 7 8
Figure 55 BLOCK DIAGRAM OF IC
Negative power supply for FL drive To be connected to -30V
FL display tube segment drive
FL display tube grid drive
FL display tube grid drive
32
LFCOM
31
LFOUT
30
LRIN
29
LRCOM
28
LROUT
27
LVref
26
VSS
25
CE
24
DI
23
CL
22
Vref
21
RVref
20
RROUT
19
RRCOM
18
RRIN
17
RFOUT
9 10 11 12 13 14 15 16
32 31 30 29 28 27 26
VCC
LPF
MUTE
+ RECT
-
RECT
RECT
RECT
VCA VCA
VCA VCA
LPF
VCC
12 13 14 15 16 17 18
19 18 17 16 15 14
A A
B B
INV-PHASE
SRAM
L+DELAY R+DELAY
VOL/MUTE
A
7k/5k
DC-OUT
OUT-FILTER
L+R B-NR
(-6dB)
A
B
A B
50k
9 10 11
– 55 –
Function
25 24 23 22
P.S.
LOG DIFF
DUAL 1
CONTROL
LOG DIFF
P.S.
19 20 21
13
S-TRIM
12