D-NF400/NF401
26
26
• IC Block Diagrams
– MAIN Board –
IC1
TA2154FN (EL)
1
2
3
4
27
26
25
5
FM/TV
MIX
30
29
28
AM
MIX
24
AM
OSC
1/2
FM
OSC
TV
OSC
6
7
8
9
10
AGC
23
22
21
20
1/8 OR
1/16
FM/AM/TV
PW SW
11
12
FM
DET
LEVEL
DET
AM
DET
19
SW
13
14
15
FM MPX
18
17
16
TV
RF
FM
RF
BUFFER
BUFFER
BUFFER
IF
BUFFER
FM
IF
AM
IF
AF
TV RF IN
FM RF IN
RF GND
FM MIX
AM MIX
AGC
VCC
FM IF IN
GND
AM IF IN
QUAD
DET OUT
MPX IN
LPF1
R OUT
AM RF IN
RFVCC
AM OSC
TV RF OUT
FM RF OUT
AM BYPASS
TV FM OSC
OSC OUT
MODE2
MODE1
IF REQ
IF COUNT
LPF2B
LPF2A
L OUT
33
32
31
30
29
28
27
26
25
24
23
1
44
2
3
5
6
7
8
9
10
11
43
42
41
40
39
38
37
36
35
34
12
13
14
15
16
17
18
19
20
21
22
IN-SEL
TU-R-ATT
TU-L-ATT
VOL-R_1
VOL-L_1
NC
CD_R_1
TU_R_1
LINE-R_0
LINE-L_0
PRE-GND
TU-L_1
CD-L_1
STB_HPSW_1
RIPPLE-F
BASE_1
BASE_0
BASE-T
BASE-SW
BASE-H/L-SW
BASE_0
BASE_CTL
MUTE-SW_1
MUTE-T
BEEP_1
VCC2
POWER-R_0
CENTER-AMP
POWER-L_0
POWER-GND
C-AMP_SW
A
VLS_0
A
VLS_1
NC
VOL-CTL_1
AVLS_SW
RIPPLE-F
VOL-BIAS
VCC1
NC
AGC_SW
NC
MIX_0
BASE_NF
MUTE
BEEP
AGC
BST
BIAS
ALC
VOLUME
VOLUME
INPUT CONTROL
VOLUME CONTROL
VOLUME
BIAS
+
−
+
−
+
−
+
−
4
IC302
AN17883A-VF
w w w . x i a o y u 1 6 3 . c o m
Q Q 3 7 6 3 1 5 1 5 0
9
9
2
8
9
4
2
9
8
T E L
1 3 9 4 2 2 9 6 5 1 3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299