Icepower Amp (2/5) - Pioneer SC-LX81 Service Manual

1

10.22 ICEPOWER AMP (2/5)

A
CN4200
CKS1716
R+ 1
R- 2
GNDR 3
GNDR 4
V+12V
V+12R 5
V-12R 6
V-12V
CN4100
CKS1716
L+ 1
B
L- 2
GNDL 3
GNDL 4
V+12L 5
V+12V
V-12L 6
V-12V
C
R_IN
L_IN
Q 1/5, 3/5, 5/5
AMUTE
D
Q 1/5, 3/5, 4/5, 5/5
E
V+64V
VD_CHK1
GND
VS_CHK1
F
V-64V
Q 2/5
136
1
2
D4200
1SS302
V+5V
V-5V
R4200 R4202
100 0.5%
910 0.5%
C4204
ACG7069-A
1000p
C4205
ACG7069-A
1000p
GND R4201 R4203
100 0.5% 910 0.5%
D4100
1SS302 V+5V
V-5V
R4100 R4102
0.5%
100 910 0.5%
(FL)
C4104
ACG7069-A
1000p
C4105
ACG7069-A
GND
1000p
R4101 R4103
100 0.5%
910 0.5%
V+5V
R4215
0
GND
GND
R4115
0
V-5V
V-5VFILT1
GND
R4214
R4278
4.7k
NM
R4210 C4212 100u
C4213
R4213
470
ACH1479-A 100u
(FL)
ACH1479-A
R4110 C4112 100u NM 1%
C4113 ACH1479-A
R4113
470
ACH1479-A 100u
NM 1%
R4114 R4178
NM
4.7k
GND
VD_CHK1
VS_CHK1
AMPOVERLOAD
AMPDISABLE1
Q 1/5
GND
GND
R4118
4.7k
GND
VD
R4261 R4161
ACN7165-A
ACN7165-A
VD1 10 VD2
10
3216 3216
1u
1u
L4202
L4102
ATL7018-A
ATL7018-A
L4203 L4103
ATL7018-A ATL7018-A
1u
1u
10 10
3216 3216
R4162
R4262 VS1 VS2
ACN7165-A
ACN7165-A
VS
2
3
C4208
220u/25 HAT
C4209
0.01u/16 R4206
0
2125
V-12V
CFHXSQ103J16-T
GND
IC4202
(1/2)
3
4 UPC4570G2-A
R_IN
1
8
2
R4205
1k 0.5%
C4207
470p
ACG7072-A
C4109
CFHXSQ103J16-T V+12V
R4106
0.01u/16
2125
0
GND
C4108 220u/25
IC4202
HAT
(2/2)
5
UPC4570G2-A
L_IN
7
6
R4105
1k 0.5%
C4107 470p
ACG7072-A
DC offset
C4220 1u/10
YB
R4220 R4222
6
8
R4218
7
220k 240k
4.7k
IC4203 4
5
(2/2)
GND
NJM4565MD
C4221 R4221 MOD1
0.1u/16
1.8k
YB
GND
C4222 R4225 R4226 R4227
2125
1k 1% 1%
2200p 1.5k 1.5k
ACG7073-A
R4224 27k 1%
GND
R4172
NM
IC4200
ICC1-AVR
CS1_ch1
34 22
CS2_ch1
35 21
RECout_ch1
36 Pwm+_ch1 20
Vin__ch1 Pwm-_ch1 ZobelSense1
37 Mod_ch1 19
DC_FB_ch1 NTC_in
38 18
MODULATOR
Vin_ch2 Average1
39 17
DC_FB_ch2 Average2
40 CS1_ch2 16
RECout_ch2 ZobelSense2
CS2_ch2
41 15
Ref_ch2
Mod_Ch2
42 14
Pwm+_ch2
43 13
Pwm-_ch2
44 12
R4124
27k
1%
C4122 R4125 R4126 R4127
2125
1k 1% 1% 1.5k
1.5k
2200p
ACG7073-A
GND
DC offset
GND
V+5V
C4247 R4260
1u/10 10
C4120
YB
1u/10
YB
R4120 R4122
2
8
1
220k 240k
IC4203
4
(1/2) 3
NJM4565MD
GND
R4160 C4147
10 1u/10
YB
GND
V-5V
C4121 R4121
MOD2
0.1u/16
1.8k
YB
GND
The ! mark found on some component parts should be replaced
with same parts(safety regulation authorized) of identical
designation.
NOTE
1. RESISTORS
Unit: k-k Ω , M-M Ω or Ω unless otherwise noted.
Rated Power: 1/16w unless otherwise noted.
Toleranee: (J)5% unless otherwise noted.
2. CAPACITORS
Unit: p-pF or u-uF unless otherwise noted.
Ratings: Capacity(F)/Voltage(V) unless otherwise noted.
YB:CKSRYB, QYB:CKSQYB,SYB:CKSYB, CH:CCSRCH
HAT:CEHAT, ZL:CEHAZL
3. NM: No Mount
SC-LX81
3
4
V+5V
R4240
10k
R4229
1/8W
OUT1_R
2125
1
R4230
2125
GND
D4211
47k
1% 1/8W NM
OUT1
R4242
0
C4223
Q4209
C4224
39p 2SC4154(EFG)
ACG7078-A C4229
ACG7066-A
56p 0.1u/16
YB
GND
R4235 R4236 R4237 R4277
PWM1
3216 3216
15k 1%
1.8k 1% 27k 20k
1% 1/4W 1% 1/4W
GND GND
1%
C4227
ACG7070-A V-5VFILT1
4.7P
C4228
2.2u R4238
2125
2.7k
ACG7073-A
1%
2SA1682(4)
R4239
Q4206 Q4207
1%
56k
2SA1682(4)
MOD1
ZOBEL1
GND
ZOBEL2
MOD2
2SA1682(4)
Q4106 Q4107
2SA1682(4)
R4139
56k 1%
C4128
2.2u R4138
2125
2.7k
ACG7073-A
1%
C4127
ACG7070-A
4.7P
1% V-5VFILT1
R4136
R4177
R4137
R4135 15k
PWM2
3216 3216
1.8k 1% 1%
27k 20k
1% 1/4W
1% 1/4W
ACG7066-A
C4123
V+5V
39p
GND GND
OUT2
R4130
1% 1/8W R4140
2125
47k
10k
R4129
OUT2_L
2125
1/8W
1
AM Switch GND
R4142
Transistor
R4141
Q4109
2SC4154(EFG)
15k D4111
GND
1608 SIZE 2125 SIZE
RS1/16S*** RS1/10S***
2125
RN1/16S***
RS1/8SQ***
2125
1/8W
CCSR***
CCSQ***
CKSR*** 2125
CKSQ***
4
Q 1/5, 3/5,
4/5, 5/5
OSC1
(FL)
Q 1/5, 3/5,
4/5, 5/5
0
OSC1
NM
3216 SIZE
RS1/8S***
3216
RS1/4SA***
3216
1/4W
CCS***
3216
CKS***