Schematic Diagram - Main Board (2/7) - Sony D-NF400 Service Manual

D-NF400/NF401
Q Q
3 7 6 3 1 5 1 5 0
6-5. SCHEMATIC DIAGRAM – MAIN Board (2/7) – •
(2/7)
VOL_CTRL
TU_BASS2
TU_BASS1
TU_MUTE
TU_BEEP
(Page 20)
A1
A2
A3
D320
MA792WK-TX
(Page 15) A4
FB302
T E
L 1 3 9 4 2 2 9 6 5 1 3
R120
0
R220
0
C321
0.1
C329
0.1
w w w
(Page 18)
See page 26 for IC Block Diagram.
R322
2.2k
BASS_CTL
C323
0.047
BASS_O
BASS-H/L-SW
BASS-SW
C327
0.22
BASS-T
BIAS_O
C320
22 6.3V
BIAS_I
R333
C333
0
10 6.3V
RIPPLE-F
D321
MA2ZD14001S
STB_HPSW_I
R122 47k
C337 100p
C121
CD-L_I
2.2
R325 10k
C328
22
C338 470p
6.3V
TU-L_I
R334
PRE-GND
∗
R221
22k (EXCEPT NF400:AEP,UK,EE)
47k (NF400:AEP,UK,EE)
∗ R334,335
4.7k (NF400:AEP,UK,EE)
10k (EXCEPT NF400:AEP,UK,EE)
C334
0.01
C221 R337
2.2 47k
x a o
y
(Page 19)
. i
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C330 C331 C332
R328
22 22 22
0
6.3V 6.3V 6.3V
C322
1
BASS_NF AVLS_SW
AVLS_I
AVLS_O
C-AMP_SW
POWER-GND
POWER-L_O
INPUT SELECT,
CENTER-AMP
ELECTRICAL VOLUME
IC302
AN17883
POWER-R_O
VCC2
Q Q
3 7 6
BEEP_I
MUTE_T
MUTE-SW-I
IN-SEL
22k (EXCEPT NF400:AEP,UK,EE)
47k (NF400:AEP,UK,EE)
R338 C335 C336 R324
0 2.2 2.2 100
R320
0
R301 R302
100k 47k
AUD_SEL
u 1 6 3
16 16
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2 4
8 9 9
C340
0.1
R145 0 C145 2200p
R339 0 C341 2200p
R245 0 C245 2200p
3 1 5 1 5 0 8 9 2
C344
0.22
C342
220
6.3V
R121
D308
MA147-TX
C343
0.1
C314
0.01
VDR201
VDR301
VDR101
L320
m
c o
.
2
8 9 9
FB101
FB201
J301
4 9 8 2 9 9
FB303
TUNER-L
TUNER-R
FM_ANT
(Page 17)