Pioneer GM-A6704/XEVES Service Manual - Page 6
Browse online or download pdf Service Manual for Amplifier Pioneer GM-A6704/XEVES. Pioneer GM-A6704/XEVES 23 pages. Bridgeable four-channel power amplifier
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4. BLOCK DIAGRAM
A-Lch(+)
Q50
Atuo ON
Sense
A-Lch(-)
IC1-B
LOW INPUT
OP AMP
RCA A-Lch
IC1-A
RCA A-Rch
LOW INPUT
OP AMP
A-Rch(+)
A-Rch(-)
SW3
INPUT S/W
2CH/4CH
B-Lch(+)
B-Lch(-)
IC6-A
LOW INPUT
OP AMP
RCA B-Lch
RCA B-Rch
B-Rch(+)
IC6-B
LOW INPUT
OP AMP
B-Rch(-)
POWER
REMOTE
GROUND
SWITCHING
Q28, Q29
SYSTEM
CONTROL
VR1-A
IC2-B
ISOLATOR
IC4-A
LOW PASS
AL
GAIN
IC3
HIGH PASS
FREQ
VR1-B
CONTERL
IC2-A
ISOLATOR
AR
GAIN
IC5-B
VR2-A
IC7-A
BASS
ISOLATOR
BOOST
IC10-B
LOW PASS
BL
SW4
GAIN
0/6/12B
LEVEL
CONTROL
HIGH PASS
VR2-B
IC7-B
BASS
ISOLATOR
BOOST
IC5-A
BR
GAIN
Q20, Q21, Q22, Q26
Q70, Q71, Q72
MUTE
Auto LEVEL
SWITCHING
SWITCHING
IC12
PWM IC
PROTECTION CIRCUT
HIGH
LOW
TEMPERATURE
VOLTAGE
VOLTAGE
Q25
Q128
TEMPERATURE
AL
Atuo Level
LPF/HPF
Control
SW1-1
MUTE
AR
LPF/HPF
IC4-B
SW1-2
INVERSION
AMP
Q228
TEMPERATURE
Atuo Level
Control
Q328
TEMPERATURE
Atuo Level
Control
BL
LPF/HPF
SW2-1
MUTE
IC8
MUTE
BR
LPF/HPF
IC10-A
SW2-2
INVERSION
AMP
Q428
TEMPERATURE
Atuo Level
Control
T1
Q9, Q10, Q11, Q12
BOOST VOLTAGE
FET DRIVER
TRANS
OVER LOAD
DC /SP SHORT
Q1
A
P.C.B TOTAL ASSY
Q132, Q134, Q136
Q139, Q141
PRE AMP+
POWER AMP+
OVER LOAD/
Q160
Q138
SPEAKE SHORT
MUTE
Q140, Q142
PRE AMP-
POWER AMP-
Q130
Q230
Q133, Q135, Q137
Q232, Q234, Q236
Q239, Q241
PRE AMP+
POWER AMP+
OVER LOAD/
Q238
Q260
SPEAKE SHORT
Q240, Q242
PRE AMP-
POWER AMP-
Q233, Q235, Q237
Q339, Q341
Q332, Q334, Q336
PRE AMP+
POWER AMP+
OVER LOAD/
Q360
Q338
SPEAKE SHORT
Q340, Q342
PRE AMP-
POWER AMP-
Q330
Q333, Q335, Q337
Q430
Q432, Q434, Q436
Q439, Q441
PRE AMP+
POWER AMP+
OVER LOAD/
Q438
Q460
SPEAKE SHORT
Q440, Q442
PRE AMP-
POWER AMP-
Q433, Q435, Q437
+B RECTIFIER
DC +15V
DC -15V
-B RECTIFIER
A-Lch
OUTPUT
Q24, Q23
DC PT
A-Rch
OUTPUT
B-Lch
OUTPUT
Q24, Q23
DC PT
B-Rch
OUTPUT