Block Diagram And Schematic Diagram - Pioneer keh-p4900 Service Manual

1
QQ

3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM

3 7 63 1515 0
3.1 BLOCK DIAGRAM
A
TUNER AMP UNIT
B
CN402
FM/AM
25
ANTENNA
26
FMTV
AMTV
29
AMTV
25
FMTV
37
CN701
BUSL+
7
11 BUSL-
IP-BUS 5 BUS-
1 BUS+
Q701
8
Q702
TE
L 13942296513
D
CN252
1
FWD
L-ch
37
36
5
REV 39
L-ch
4
CN254
M2
MECHANISM
2
SUB M
DRIVER
1
MOTOR
5
2
1
M1
CN255
MAIN M
MOTOR
CN253
CN256
EGN1
REEL
SENSE
E
REEL SENSE PCB
www
.
1
http://www.xiaoyu163.com
FM/AM TUNER UNIT
Q3 T31 Q31 CF51
FM RF FM MIX FM IF
41 10
9 14 15
FM
34
FM/AM PROCESSOR
OSC
PA4023B
IC1
6 38 32 36 16 18 23
Q201 Q202
AM RF/AGC CF232 AM IF
AM
AMTV
AMVCC FMVCC
OSC
VCC
19 20 15 17 14 13
21
AMIF
PLL
9
Q907
4
FMVCO
5
AMVCO
IC501
AM
PM2006A
Q908
38
PDI/PCK/PDO/PCE
X501
IP-BUS DRIVER
1
5 TX
IC702
2 RX
6
CA0008AM
B.U
8
ASENBO
ASENBO
DECK UNIT
CN251
VCC
4
4
EQ AMP
5 TAPE+B
IC251 LOUT
7
3
3
CXA2559Q
Lch
18
17
MUTE MCMUTE
9
9
B.U
20 B.U
20
18 19
STBY
17 STBY
19
19
IC351
PA2020A
MTL MTL
8 8
LOAD
LDSW
10
8 7
11 11
CN602
3 1 5 6
3 1 5 6
S1
S2
LOAD
MODE
x ao
y
i
http://www.xiaoyu163.com
2
8
CF52
CF53
FM IF T51
FM IF
17 19 47 1 2
19
FM PROCESSOR
7
IC2 PA4024A
25
31 30 28 40 43
FMSL
9
AMSL
18
6
Q909
FM
VCC
Q910
ELECTRONIC VOLUME
TUN-L
2
BUS-L1 5
IC301
11
BUS-L2 RL
6
PML003AM
10
TAPE-L 3 FL
Q Q
3 6 7 1 3
Q307
MUTE
Q911
Q904
VCC
8V
REGULATOR
VDD
RESET SYSPW
IC602 1
2
S-80734AN
66 65
60
54
56
TX
61
RX
1
ASEMBO
X1
37
SYSTEM
MCMUTE
X2
CONTROLLER
IC601(2/2)
48
PE5086A
STBY
38
MTL
42
LOADSW
63 8 9 5
8
8
u163
KEY MATRIX
.
LCD
C
KEYBOARD UNIT
2
3
KEH-P490,P4900,P4950
2 9 9 4 2 8
TUNER Lch
B.U
Q921
Q920
SYSPW
76
SD
SL
53
SD
CONTROLLER
29
FM
30
AM
TUN-L
Q309
CN301
MUTE
MUTE
Q310
POWER AMP
CN603
9
FL+
7
11 FL-
IC302
FL
TDA7384
15
1 5 0 5 8 2 9 9 4
RL
19
RL-
17
RL+
MUTE
STBY
22 4
Q306
B.U
SYSPW
Q901
BSENS
Q905
Q902
B.U
ACC
ASENS
Q906
B REMOTE
IC901
1
5
B.U
TPD1018F
6
SYSPW
70
X601
69
VDD
SWVDD
Q601
VDD SWITCH
SW5V
CN601
5 3 4 6
5 3 4 6
m
CN1901
56 10
co
18
DPDT
20
KYDT
LCD DRIVER
IC1901
PD6278C
22 23
X1901
3
4
9 9
A
Q903
VDD
55 74 68
SYSTEM
IC601(1/2)
PE5086A
B
2
1
6 6
FRONT-L
SPEAKER
5 5
2 8 9 9
9 9
REAR-L
8 SPEAKER
8
7 7 BACK UP
FUSE
10A
2
2
ACC
1 1
B.REMOTE
C
REMOTE CONTROL
SENSOR
3
IC1902
1
RS-140
D
17
REM
9
4