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IC1 RH-iX0001SJZZ: System Microcomputer (IX0001SJ)
TUN_DI
TUN_DO
TUN_CK
TUN_CE
TUN_MUTE
TUN_SD
TUN_ST
VDD
OSC2
OSC1
VSS
XI
XO
MMOD
VREF
KEY1
KEY2
KEY3
AREA
SP_LEVEL
MODEL
POSISTOR
N.C
VREF+
ALC
IC203 VHiLA1833//-1: FM IF Det./FM MPX./AM IF (LA1833)
AM
OSC OUT
BUFF/FM SD ADJ
OSC IN
24
ALC
BUFF
LEVEL
DET
FM
IF
1
FM IF IN
AM MIX
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
FM
AM RF
AM
AFC
IN
VSM
20
23
22
21
AM
AM
AM
RF.AMP
MIX
OSC
AM
IF
AM/FM
IF
COMP
BUFF
S-CURVE
FM
DET
GND
REC
4
5
2
3
REG
AM IF IN
GND
OUT
Figure 27 BLOCK DIAGRAM OF IC
IC1
IX0001SJ
PLL
AM
FM
OUT
IN
OUT
19
18
17
ACC
P-DET
AM
DET
TUNING
DRIVE
8
6
7
SD
STEREO FM-DET VCC
– 27 –
HT-DP2500W
75
P12
74
P11
73
P10
72
P9
71
P8
70
P7
69
P5
68
P5
67
P4
66
P3
65
P2
64
P1
63
10G
62
9G
61
8G
60
7G
59
6G
58
5G
57
4G
56
3G
55
2G
54
1G
53
LED1
52
FAN
51
PROTECT
R-CH
L-CH
MPX
IN
OUT
OUT
15
14
16
13
PILOT
CANCEL
STEREO
SW
Vcc
9
10
11
12
PHASE
AM/FM
AM/FM IF
OUT/IF-BUFF
PILOT
DET
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