KEH-P5900R,P4900R,P4930R
1
3
4
1
3
4
D
C
B
A
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM
3.1 BLOCK DIAGRAM
IC2
PA4024A
AMVCC
Q3
Q201 Q202
AM RF/AGC
FM RF
14
10
CF232
25
T31
Q31 CF51
AM IF
B
FM/AM TUNER UNIT
7
9
18
2
6
21
15
5
13
19
26
25
20
17
FM PROCESSOR
IC1
PA4023B
FM/AM PROCESSOR
23
9
FM MIX
FM IF
FM IF
CF52
FM IF
CF53
15
17
19
47
41
34
6
38 32 36
16
18
1
FM
OSC
AM
OSC
VCC
FMVCC
FMTV
AMIFC
VCO
AMTV
Q165
T51
2
FMSD
COMP
SD
FMSL
AMSL
31 30
28
33
40
7
43
19
TUNER Lch
IC501
PM2007A
PM4006B
IC701
IC703
TA75S393F
RDS DECODER
PLL
Q909
Q910
Q907
Q908
VCC
29
25
9
19
4
5
37
38
AMTV
FMTV
FMTV
AMTV
AMIF
FMVCO
AMVCO
X501
AM
FM
LDET
LDET
CL
Q305
Q501
Q402
Q301
Q303
LDET
TUNER MUTE
TMUTE
Q921
Q920
B.U
VDD
Q903
SYSPW
SD
SL
TMUTE
SYSPW
VDD
A
VDD
CL
LDET
51
76
53
77
61
47
4
1
3
18
55
74
68
SL
12
X701
11
20
29
30
RDS57K
RDS57K
FM
AM
SYSTEM
CONTROLLER
PE5085A
IC601(1/2)
PLLDA
T
A
TUN-L
TUN-L
ELECTRONIC VOLUME
PML003AM
IC301
11
10
2
5
6
3
9
BUS-L1
BUS-L2
TAPE-L
RL
FL
PEE
Q310
Q309
MUTE
MUTE
POWER AMP
TDA7384
IC302
11
15
MUTE
STBY
FL
RL
FL+
FL-
RL+
RL-
22
4
9
7
19
17
SYSPW B.U
B.U
SYSPW
Q307
Q904
Q911
Q306
Q905
Q901
Q902
MUTE
8V
REGULATOR
RESET
IC602
S-80734AN
VCC
VDD
1
2
8
5
6
B.U
TX
TX
RX
RX
ASENBO
ASENBO
IP-BUS DRIVER
IC702
CA0008AM
BUSL+
BUSL-
BUS-
BUS+
Q701
Q702
8
1
5
11
7
56
57
1
45 54
60
1
2
66 65
70
69
64
37
48
38
MUTE
PEE
RESET
BSENS
ASENS
SWVDD
DPDT
KYDT
ILMPW
DSENS
DILM
ASEMBO
MCMUTE
STBY
MTL
LOADSW
X1
X2
TELIN
SYSTEM
CONTROLLER
IC601(2/2)
PE5085A
X601
Q906
BSENS
ASENS
ACC
FUSE
10A
IC902
TPD1018F
ALARM/B REMOTE
5
1
6
B.U
SYSPW
TEL MUTE
Q924
B.U
VDD
Q922
Q923
DILM
STBY
B.U
MUTE
MTL
LOAD
42
20
63 26 8
9
5
VDD
Q916
Q917
ILMPW
DSENS
Q601
SWVDD
VDD
SW5V
ILL1
KYDT
DPDT
SW5V
VDD SWITCH
5
1
3
4
11
9
20
19
8
3
4
11
9
20
19
8
8
2
11
8
1
7
13
2
1
FM/AM
ANTENNA
A
TUNER AMP UNIT
D
DECK UNIT
C
KEYBOARD UNIT
2
8
5
3
4
6
8
5
3
4
6
LCD DRIVER
IC1901
PD6278C
DPDT
KYDT
VDD
LCDB
XO
XI
REM
REMOTE CONTROL
SENSOR
IC1902
RS-140
X1901
18
20
56 10
3
1
17
22
23
IC251
CXA2559Q
EQ AMP
CN251
CN252
7
5
TAPE+B
Lch
FWD
L-ch
REV
L-ch
37
36
39
17
6
6
S1
LOAD
E
REEL SENSE PCB
CN602
CN701
IP-BUS
CN402
CN301
CN603
CN901
CN601
CN1901
VCK/VDT/VST
PDI/PCK/PDO/PCE
ACC
BACK UP
FRONT-L
SPEAKER
REAR-L
SPEAKER
TEL MUTE
B.REMOTE
2
1
2
ILM2
14
VR401
VCC
LOUT
MCMUTE
LDSW
MTL
STBY
B8
B5
B6
B7
A4
A7
KEY MATRIX
LCD
9
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