Pioneer SC-37 Service Manual page 68

1
QQ
3 7 63 1515 0
Zobel Detection
A
Over Current Detection of MOS FET in Output Stage
P
ICEPOWER AMP ASSY
C4212 100u
FR ch
C4213 100u
B
ACH1479-A
C4112 100u
C4113
FL ch
ACH1479-A
VD_CHK1
VS_CHK1
C
AMPDISABLE1
TE
L 13942296513
SL ch
SR ch
SBL ch
D
SBR ch
C ch
DISPLAY
K
ASSY
E
CN8202
-18
71
UCOM
IC8001
www
F
68
1
http://www.xiaoyu163.com
2
34
R4278
CS1_ch1
35 CS2_ch1
NM RECout_ch1
36
Vin__ch1
R4213
37
ACH1479-A
DC_FB_ch1
NM 1%
ACH1479-A
38
MODULATOR
Vin_ch2
R4113
39
100u
DC_FB_ch2
NM 1%
40
R4178
RECout_ch2
NM
41
42
43
44
GND
GND
IC4400 4
IC4600 4
IC4700 4
AMPOVERLOAD port of ICC1 output the "L" when abnormal
DIGITAL MAIN
F
ASSY
CN601 CN603
-9 -2
x ao
y
. i
2
http://www.xiaoyu163.com
3
8
IC4200
ICC1-AVR
22
21
Pwm+_ch1
20
Pwm-_ch1
ZobelSense1
Mod_ch1
19
NTC_in
18
Average1
17
Average2
16
CS1_ch2
ZobelSense2
CS2_ch2
15
Ref_ch2
Mod_Ch2
Pwm+_ch2 14
Pwm-_ch2
13
12
R4124
27k
1%
C4122 R4125 R4126
R4127
2125
1k 1% 1.5k 1% 1.5k
2200p
ACG7073-A
V+5V
Q Q
3 6 7
R4044
100
GND
CONNECT
W
ASSY
CN7802 CN7803
-2 -19
u163
SC-37
3
4
2 9 9 4
1%
1 3 1 5 0 5 8 2 9
CN4000
-8
R4043
XOLERR
100
C4021
1000p
INTERFACE
G
ASSY
CN7003 CN7006
-19 -10
XOLERR
m
co
.
4
2 8
9 9
9 4 2 8 9 9