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1
3.2 BLOCK DIAGRAM(KEH-3910/X1M/EE)
A
TUNER AMP UNIT
B
FM/AM TUNER UNIT
FM FRONT END
Q3
CN401
ANTENNA
1
27
JACK
2
22
35
Q201 Q204
33
28
AM RF
Q202
25
D
DECK UNIT
CN252
1
EQ AMP
FWD
L-ch
37
IC251
36
5
REV
39
CXA2559Q
L-ch
4
CN254
MECHANISM
M2
2
SUB
M
DRIVER
1
MOTOR
18
5
IC351
2
PA2020A
1
M1
CN255
MAIN
M
8
7
MOTOR
CN253
3
1
3
1
CN256
EGN1
REEL
SENSE
E
REEL SENSE PCB
1
2
FM/AM 1ST IF 10.7MHz
T51 Q51 CF51
CF52 CF53
32
38
39
42
44
46
63
69
70
54
MIXER.IF AMP DET
IC 1
78
PML002A
65
71
32
45
55
57
61
74
75
CF202
EEPROM
5
4
IC 3
AM 2ND IF 450kHz
6
3
BR9010FV
VDD
VCC
22
10 14
12 15 16
Q411
LOCL
VCC
TUN-L
TAPE-L
CN251
VCC
4
4
5
TAPE+B
LOUT
7
3
3
Lch
17
MUTE
RIMUTE
30
9
9
RIMUTE
B.U
20
B.U
20
19
STBY
48
17
STBY
19
STBY
19
42
LOAD
LD
10
LOADSW
11
11
CN602
5
6
5
6
S1
S2
LOAD
MODE
C
KEYBOARD UNIT
2
3
FM MPX
25
24
19
IC 2 PM4008A
6
34 33 41 44 11 12 13
46
COMP
21
LDET
18
8
13
2
3
4
VDD
ELECTRONIC VOLUME
2
IC301
20
RL
SN761029DL
19
3
FL
Q350
MUTE
Q352
Q904
VCC
Q905
8.4V
B.U
REGULATOR
VDD
A
RESET
IC602
1
Q906
2
S-80834ANY
SYSPW
66 65
54
60
SYSPW
70
X1
X601
SYSTEM
69
X2
CONTROLLER
64
IC601(2/2)
TELIN
PE5089A
63
9
8
5
8
8
KEY MATRIX
LCD
3
KEH-3950,3910
TUNER Lch
B.U
SYSPW
55
SYSTEM
CONTROLLER
53
SD
76
IC601(1/2)
SL
PE5089A
14
TUNPCE
13
TUNPCK
20
PCE2
12
TUNPDO
PDIO
11
TUNPDI
28
LOCL
TUN-L
CN603
POWER AMP
9
FL+
6
7
11
FL-
5
IC302
FL
TDA7384
15
RL
19
RL-
9
17
RL+
8
MUTE
STBY
22
4
Q351
B.U
7
SYSPW
Q901
BSENS
Q902
ASENS
ACC
2
1
POWER SWITCH
IC901
6
1
TPD1018F
TEL MUTE
CN901
Q951
VDD
A
SWVDD
Q650
VDD SWITCH
SW5V
CN601
7
3
4
5
7
3
4
5
CN1801
50 10
18
DPDT
20
KYDT
LCD DRIVER
IC1801
PD6293A
23
22
X901
4
A
Q903
VDD
74
68
B
6
FL+
FL-
5
9
RL-
RL+
8
7
BACK UP
FUSE
10A
2
ACC
1
C
B.REMOTE
TEL MUTE
D
11
4
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