Icepower Amp Assy (5/5) - Pioneer SC-27 Service Manual

1

10.28 ICEPOWER AMP ASSY (5/5)

A
CN4700
XKP3062-A
(C)
C+ 1
C- 2
GNDC 3
V+12V
V+12C 4
V-12C 5
V-12V
B
V+5V
R4715
C
0
GND
R4815
0
V-5V
GND
R4714
AMUTE
4.7k
Q 1/5-3/5
C4712 100u
R4710
C_IN
470
(C)
ACH1479-A
D
VD_CHK4
VS_CHK4
Q
1/5-4/5
AMPOVERLOAD
AMPDISABLE4
Q 1/5
E
VD
V+64V
R4761
ACN7165-A
VD_CHK4
L4702
ATL7018-A
L4703
ATL7018-A
GND
VS_CHK4
ACN7165-A
F
V-64V
Q
5/5
144
1
2
D4700
1SS302 V+5V
V-5V
R4700 R4702
100 0.5% 910 0.5%
C4704
ACG7069-A
1000p
C4705
ACG7069-A
R4701 R4703
1000p
910
GND 100 0.5%
GND
DC offset
C4720
1u/10
8
R4718
7
4.7k
IC4703 4
(2/2)
NJM4565MD
GND GND
R4772
V-5VFILT4
NM
CS1_ch1
34
CS2_ch1
35
RECout_ch1
C4713
36
ACH1479-A
Vin__ch1
R4713
37
100u
DC_FB_ch1
NM 38
Vin_ch2 MODULATOR
R4778
39
DC_FB_ch2
NM
40
CS1_ch2
RECout_ch2
CS2_ch2
41
Ref_ch2
42
43
44
GND
GND GND
DC offset
C4747
1u/10
YB
GND
10 VD7
3216
1u 1
IC4703
(1/2)
NJM4565MD
R4860
10
1u
V-5V
10
3216
R4762
VS7
2
3
C4708
ACH7320-A
470u/16
C4709
0.01u/16 R4706
0
2125
CFHXSQ103J16-T
GND
IC4702
(1/2)
3
NJM2068MD
4
1
8
2
R4705
1k
0.5%
C4707
470p
GND
ACG7072-A
C4809
V+12V
0.5%
CFHXSQ103J16-T
0.01u/16
R4806
2125 0
GND
C4808
ACH7320-A
470u/16
IC4702
(2/2)
5
4 NJM2068MD
7
8
6
R4729
1/8W
2125
1
R4730 47k
2125
1% 1/8W
YB
C4723
R4720 R4722
6
ACG7066-A
220k 240k
5
R4735
GND
C4721 R4721 MOD7
0.1u/16
1.8k
YB
C4722 R4725 R4726 R4727
2200p
1k 1% 1.5k 1.5k
ACG7073-A
1% 1%
R4724
27k C4728
1%
GND
2200p
ACG7073-A
IC4700
ICC1-AVR
(C)
22
21
Pwm+_ch1
20
Pwm-_ch1
ZOBEL7
ZobelSense1
Mod_ch1
19
NTC_in
18
Average1
17
Average2
16
ZobelSense2
15
Mod_Ch2
14
Pwm+_ch2
13
Pwm-_ch2
12
V-5VFILT4
R4999
10k
GND
V+5V
R4760
10
2
8
4
3
GND
C4847
1u/10
YB
GND
The mark found on some component parts should be replaced with
same parts (safety regulation authorized) of identical designation.
SC-27
3
4
V-12V
(C)
C_IN
V+5V
R4740
10k
OUT7_R
GND
D4711
NM
OUT7
Q4709
C4724 2SC4154(EFG)
39p
56p C4729
0.1u/16
ACG7078-A
YB
GND
R4736
1.8k 15k R4737 R4777
PWM7
3216 3216
1% 1% 27k
20k
1% 1/4W
1% 1/4W
GND GND
C4727
ACG7070-A
V-5VFILT4
4.7p
R4738
(C)
2.7k
1%
Q4706 Q4707
R4739
2SA1682(4) 2SA1682(4)
56k 1%
C4761
10p/50
MOD7
GND
4
D
RF0
Q
1/5-4/5
1
Ise
OSC1
2
Ise
3
NC
4
NC
5 PW
(C)
6 PW
7 SS
8 Bla
VSS+
V
R4766
10K 1%