Block Diagram And Schematic Diagram - Pioneer KEH-P7900R X1N Service Manual

1
KEH-P7900R,P7910R,P7950

3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM

3.1 BLOCK DIAGRAM
A
A
TUNER AMP UNIT
B
FM/AM TUNER UNIT
FM FRONT END
CN401
Q3
ANTENNA
1 27
2
Q201 Q204
28
AM RF
B
C
D
10
1
2
FM/AM 1ST IF 10.7MHz
T51 Q51 CF51 CF52 CF53
38 39 42 44 46
22
MIXER, IF AMP DET
IC 1
PML002A
EW, EE
35
33 45 55 57 CF202 61 74 75
EEPROM
5
X901
AM 2ND IF 450kHz
6
BR9010FV
Q202
VDD
VCC
25 22 10 14
Q401
VDD
VCC
LOCL
2
3
25 24
32 L-OUT
IC 2 PM4008A
6
19
63 34 33 41 44 11 12 13 46
69
70
54 COMP
21
78 ldet
18
65
71
NL2
4
4
IC 3
3
12 15 16 8 13 2 3
CN101
8
5
1
IP-BUS
7
11
MIC
CN452
TEL
CN451
FWD
L-ch
REV
L-ch
M2
M
SUB
MOTOR
M1
M
MAIN
MOTOR
3
4
EW, EE
Q151 Q153
Q155 Q154
Q501
RDS
DECODER
24
20
IC 501
8
PM4009A
11 12
X501
Q402
Q101
B.U
Q102
IP-BUS DRIVER
5 1 TX
IC 101
6 2 RX
CA0008AM
ASNB
8 IPPW
B–
B+
BL+
BL–
IC 453
7
3
NJM2068MD
Q451
VDD
F
DECK UNIT
CN252
CN251 CN251
1
TAPE+B
4 4
EQ AMP
5
37
7 Lch L1
IC 251
3 3
36
5
CXA2560Q
39
6 18 17 MUTE
9 9
MECHANISM
CN254
DRIVER
B.U
20 20
2
18 19
stby
5
17
19 19
1
IC 351
2
PA2020A
1
mtl
8 8
8 7 10 LOAD LOADSW
CN255
11 11
CN253
3 1 5 4 6
3 1 5 4 6
CN256
EGN1
REEL
SENSE
S2 S3 S1
MODE 70µs LOAD
G
REEL SENSE PCB
4
B
AL
BU
TEL5V
RESET
IC 961
2 1
S-80734ANDY-I
B
VCC
RIMUTE
B.U
STBY
MTLSW