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KEH-P6021R,P6025
3.2 BLOCK DIAGRAM(KEH-P6025)
A
TUNER AMP UNIT
FM/AM TUNER UNIT
A
AMRF
AMANT
28
ATT
ANT ADJ
ANT
FMANT
27
ATT
FMRF
7
WC
9
NC
11
DGND
CN402
17
NC
20
NC
24
FMLOCL
26
RFGND
LOCH
23
LOCH
B
C
D
14
1
2
FM/AM 1ST IF 10.7MHz
MPXREF 41kHz
T51 Q51 CF51 CF52 CF53
AMDET
IC1
MIXER, IF AMP, DET.
CF202
IC 3
X901
AM 2ND IF
IMG ADJ
EEPROM
10.25MHz
450kHz
VDD
RF ADJ
VCC
LOCL
14
22
10
19
25
Q410
LOCL
VCC
VDD
D
DECK UNIT
CN252
1
FWD
L-ch
39
32
5
REV
33
L-ch
4
CN254
M2
2
M
18
5
SUB
2
1
MOTOR
MECHANISM
DRIVER
CN255
IC351
1
PA2020A
M1
M
MAIN
MOTOR
8
CN253
3
3
CN256
EGN1
REEL
SENSE
E
REEL SENSE PCB
2
3
L ch
IC 2 FM MPX
6
R ch
5
COMP
21
LDET
18
NL2
4
12 15 16 8 13
3
1
2
CN701
8
5
1
7
CN251
CN551
Lch
3
3
6
EQ AMP
MS
16 MS
5
5
DIRO
IC251
f/R
17
6
6
HA12229F
MUTE
MCMUTE
20
9
9
B.U
20
B.U
20
19
11
POS
POS
13
13
13
ES
NES
15
15
14
SC2
SC2
16
16
15
SC1
SC1
17
17
16
CM
CM
18
18
stby
stby
17
19
19
7
10
LOAD
11
loadsw
11
1
5
6
1
5
6
S1
S2
LOAD
MODE
3
4
Q416
Q710
B.U
Q711
IP-BUS DRIVER
5
1
TX
IC 710
RX
6
2
HA12187FP
BUS–
8
IPPW
BUS+
BUS+L
BZ610
ALARM
BUZZER
68
66
100
DIRO
MSIN
PEE
65
RIMUTE
MUTE
mute
61
POS
59
NES
SYSTEM
58
SC2
CONTROLLER
57
SC1
IC 601(2/2)
56
PE5207A
CM
55
stby
SYSPW
69
loadsw
6
LCDPW
96
DPDT
95
KYDT
29
ROT0
25
ROT1
9
23
4
77
DETACH
SENSE SW
Q752
Q754
B.U
Q755
4
72
Q36
37
mute
16
X1
X610
X2
15
VCC
21
SYSPW
20
CN750
Q751
B.U
ILB+
7
Q753
CSENS
4
EJECT
8
VDD
FILM+
B.U
5
S750
SW5V
10
Q750
9
FILM–
6
DPDT
11
KYDT
14
ROT1
12
ROT0
13
BL+B
2
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