Sony D-NF400 Service Manual page 26

D-NF400/NF401
Q Q
3 7 6 3 1 5 1 5 0
• IC Block Diagrams
– MAIN Board –
IC1 TA2154FN (EL)
30 29 28 27 26 25 24 23
BUFFER
AM AM
MIX OSC
1/2
FM TV 1/8 OR
OSC OSC 1/16
BUFFER
TV
RF
FM/TV
BUFFER
MIX
AGC
FM
RF
1 2 3 4 5 6 7
T E
L 1 3 9 4 2 2 9 6 5 1 3
w w w
22 21 20 19 18 17 16
SW
FM/AM/TV
PW SW
LEVEL
AM DET
IF
DET
BUFFER
FM
DET
FM
AF FM MPX
IF
AM
IF
8 9 10 11 12 13 14 15
x a o
. i
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IC302 AN17883A-VF
33 32
PRE-GND 34
TU_R_1 35
CD_R_1 36
NC 37
LINE-L_0 38
LINE-R_0 39
VOL-L_1 40
VOL-R_1 41
Q Q
3 7 6
TU-L-ATT 42
TU-R-ATT 43
INPUT CONTROL
IN-SEL 44
MUTE
1 2
u 1 6 3
y
26 26
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2 4
8 9 9
31 30 29 28 27 26 25 24 23
BST
BIAS
VOLUME
VOLUME CONTROL
VOLUME
3 1 5 1 5 0 8 9
BEEP
3 4 5 6 7
m
c o
.
2
8 9 9
22 BASE_NF
21 MIX_0
AGC 20 AGC_SW
19 NC
18 NC
17 VCC1
16 VOL-BIAS
15 RIPPLE-F
14 VOL-CTL_1
13 NC
VOLUME
BIAS
2 4 9 8 2 9 9
ALC
12 AVLS_SW
8 9 10 11