Block Diagram And Schematic Diagram - Pioneer Audio System Power Amplifier Service Manual

1

3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM

A
3.1 BLOCK DIAGRAM
A
DSP UNIT
VCC
CRYSTAL
OSCILLATOR
8
2
1 1
IC231 IC241
CK
TC7WU04F TC7W74FU
7 3
B
A/D CONVERTER
DSP
IC181
AK5351VF
IC201
7
21
18
AINL-
PD2061A
SDATA SDI1
6 19
AINL+ SDI0
17 15
19 18 16 15
DSP
IC251
PD2061A
C
SYSTEM CONTROLLER
GM-8027ZT/E
GM-8027ZT/WL
GM-8127ZT/EW
GM-8127ZT/WL
D
10 12
76
ASL
VR401
Q401
1
3
IC401
NJM2068MD
4
E
1 2
1 2
MIC MIC401
C
MICROPHONE UNIT
F
8
1
2
VCC
8
FRONT DAC
FRONT LPF
2
5
XTI IC261
D
IC311
3
AK4321VF
8 3
NJM2068MD
q
AOUTL
SDATA
18
REAR DAC REAR LPF
5
IC281
XTI
IC331
AK4321VF
3
8 NJM2068MD
AOUTL
SDATA
18
WOOFER DAC WOOFER LPF
5
IC291
XTI
16 IC341
3
SDO1 AK4321VF
AOUTL NJM2068MD
8
18
SDATA
AOUTR
17
SQUAWKER DAC
SQUAWKER LPF
5
IC271
XTI
IC321
AK4321VF
3
17 8 NJM2068MD
(TDATA) AOUTL
SDO0 SDATA
18
Q291
68
21
PEE
SYSTEM MUTE
Q175
31
SMUTEIN
ACC SENSE
IC101
Q155
17
ASENS
16
BSENS
RESET
: PD5726A 2
9 1
IC131
RESET
S-80730ANDT
79
NAVMUTE
: PD5792A
22 2
AVCIN
23 1
AVCOUT
20 8
AVCPW
1
MUTE
PWSENS 65
74 66 15
7
5 8
IC402
NJM2068MD
8
Q161
2
3
B
AMP UNIT
CN102 CN905
FRONT-L
PRE AMP
IC701
FLO FLIN
1
13 13
NJM2068MD
3
6
2
PEE
P
SYS4
3
IN1
REAR-L
22
1 5
OUT1
PRE AMP
IN3
20
OUT3
IC702
ELECTRONIC
RLO RLIN
NJM2068MD
18 11
VOLUME 11
OUT5 3
6
IC351
PM0017AM
1 7 SYS4
IN5
ELECTRONIC
VOLUME
19 TWLO TWLIN
2 IC371
8 8
SN761029DL
SUB WOOFER
PRE AMP
IC703
WFO WFIN
9 NJM2068MD
9
3
6
1 SYS4
5 5
6 6
5V REGULATOR
Q903
VDD5 VDD5
VDD 3 16
P
PEE PEE
8
11
MUTI MUTIN
13 6
ACC1
ACC1
6
13
BACK UP SENSE
Q151
BU1
BU1
7 12
Q171
NMUT1 NMUT
12 7
NAVI/MUTE
BUS DRIVER
6 TXH TXP1
15 4
IC141 7
HA12187FP
MUTO MUTEO
9
10
OFFSET SENSE
FS FS
5 14
Q913
Q101
SYSA5
17 2
AVDD
SYSD5 SYS5
18
DVDD 1
SYS8
SYS8
16 3
SYS4
SYSP1 SYSPW1
8 11
SPD1 SPD1
9
10
SPEED SENSOR PULSE
CN101 CN906
GM-8027ZT/WL
3
4
FRONT
POWER AMP
9
11 (FLP)
IC801
1 PAL006A 7
16
(FLM)
Q801
4 25
22
STBY1 PMUT
Q831
REAR
POWER AMP
7
(RLM)
9
IC802
11
(RLP)
17
PAL006A
10
1 19
4
22 15 25
Q802
STBY1 PMUT
Q832
SUB WOOFER
POWER AMP
7
11 IC803
9
10 PAL006A
1
Q803
25
4 22
STBY1 PMUT
Q833
Q950
(FSW)
B
A
C
AUDIO INPUT
BUFFER
2
1
(SPD)
IC501
BU1
7
NJM2068MD 6
Q915
MUTE
(H/U MUT)
CN902
ML-
MUTE
Q910
Q912
PMUT
Q909
Q911
B
(FSW)
MUTE
A
/STBY 6
2
7
IC903
M51957BFP
SYSTEM
5V REGULATOR
POWER SWITCH
Q904
IC902
1 3
BU
BA178M05T
8V REGULATOR
Q906
1 IC901
3
NJM2930F08K
SYSPW1
VDD
Q907
C
4
L901
BU
CN901
B.U
WFL+
WFL-
RL+
RL-
FL- FL+
OUTPUT
CONNECTOR
(SPD)
INPUT
CONNECTOR
SPD
L+
L-
N-MU
ACC
TX+
TMUT
ML+