Pioneer GM-D1004/XEVUC Service Manual - Page 6

Browse online or download pdf Service Manual for Amplifier Pioneer GM-D1004/XEVUC. Pioneer GM-D1004/XEVUC 26 pages. Class d four-channel amplifier

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4. BLOCK DIAGRAM

4.1 BLOCK DIAGRAM
A
F-Lch INPUT
AUTO ON
Q17
Sense
Q170,171
AUTO
SP INPUT
Sense
B
F-Rch INPUT
C
R-Lch INPUT
R-Rch INPUT
D
E
F
6
1
2
INVERSION
Buffer
IC1A
ISOLATOR
Q172,173
RCA-SP INPUT
Control
Buffer
IC1B
ISOLATOR
4CH-2CH
SWITCHING
Buffer
IC2B
ISOLATOR
INVERSION
Buffer
IC2A
REMOTE
SWITCHING
Q28,29
GM-D1004/XEVUC
2
3
R113
IC3B
Q101
SP INPUT
SWITCHING
R213
IC4B
Q201
SP INPUT
SWITCHING
Q301
SP INPUT
SWITCHING
R313
IC5A
Q401
SP INPUT
SWITCHING
R413
ISOLATOR
IC6A
MUTE
Q15
SWITCHING
SD
SWITCHING
Q2
3
4
R111
R211
OUTPUT LIMITING
AUTO
Q81,83
GAIN
Control
R311
R411
+B LINE 19A OVER
HIGH
CURRENT SENSING
Current
Sensing
2ohm/4ohm
/SWITCHING
IC13B
IC12
PWM IC
PROTECTION CIRCUT
Q4
OVER LOAD
SP SHORT
HIGH
VOLTAGE
R1
TEMPERATURE
TH1,2,Q3
4
Buffer
OP AMP
IC3A
Buffer
OP AMP
IC4A
Buffer
OP AMP
IC5B
Buffer
OP AMP
IC6B
FET
Q
LOW
VOLTAGE
R16