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1
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM
3.1 BLOCK DIAGRAM
A
A
TUNER AMP UNIT
FM/AM TUNER UNIT
CN726
1
AMANT
ANTENNA
ATT
28
JACK
2
FMANT
27
RFGND
26
B
LOCH
23
C
D
E
F
12
1
2
FM/AM 1ST IF 10.7MHz
AMRF
T51 Q51 CF51 CF52 CF53
ANT ADJ
IC1
MIXER, IF AMP, DET.
ATT
FMRF
CF202
AM 2ND IF
X901
IMG ADJ
450kHz
10.25MHz
RF ADJ
LOCL
25
7
17
22
10
VCC
VDD
Q401
DEH-MG2047ZF/XU/UC
2
3
MPXREF 41kHz
AMDET
L ch
IC 2 FM MPX
R ch
AMIN
COMP
LDET
IC 3
EEPROM
19
14
24
11
12 15 16
8
13
2
3
4
1
9
FAN
MOTOR
C
CN601
3
Lch
TUNL
6
DIAGNOSTICS
5
20
IC 603
ROMCK,EPCE
21
PDH069C
18
3
9
IC 431
16
HA12181FP
CN723
Q822
FAN+B
2
B.UP
11V
Q821
CN725
LOUT
16
34
FANPWR
BRST,BRXEN,BSRQ
BDATA,BSCK
13
XOUT
X602
15
XIN
VD REGULATOR
11
SCLKOUT
Q824
VD
X601
2
B.UP
10
1
SCLKIN
38
Q825
CDPWR
3
VFPWR
Q823
VDCONT
13
10
RESET
11
VDD
B.UP
VFPWR
4
RESET
1
IC 602
RESET
S-80843CNUA
12
ROMDATA,
SYSTEM CONTR
IC 601(1/2)
PD5872B
79
LOCL
36
SD
97
SL
73
st
78
PLLCE
33
pck
77
pllce@
DIO
31
PDO
32
PDI
DSP/
ELECTRONIC VOLU
SOURCE SELECT
TUNL
81
LIN-1
2
XO
IC 301
X301
PM2010A
1
XI
CDX6L
82
LIN-2
AO
dsprst,dsperr,
AO
IFOK,dspack,IFDI,
IFDO,IFCLK,dspcs
3,8,18,27,37,49,76,77
Q81
3.3V
DS
21
asens
IC 601(2/2)
27
bsens
PD5872B
SYSTEM CONTROL
26
AMPMUTE
25
SPEED
IC 7
TC7S8
20
4
rotint
65
ROTIN0
66
ROTIN1
74
WAKEUP
Q814
4
B.UP
Q815
ILMOUT
kdt)-kdt#,kst)-kst
VFCE,VFBLK,VFCK,VFDT
Q819
13.1V
Q820
4
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