D-F180AN/F181/F400/F411/F415
6-4. SCHEMATIC DIAGRAM — TUNER SECTION —
6-5. IC BLOCK DIAGRAMS
— 26 —
— 27 —
— 28 —
— 29 —
— 30 —
IC301
TC9438FNEL
21
22
23
24
2
3
5
4
6
7
8
9
10
1
11
12
13
14
15
16
17
18
19
20
DATA
INTERFASE
CIRCUIT
MICRO COMPUTER
INTERFASE
CIRCUIT
OSC
TIMING
GENERATOR
TEST
CIRCUIT
OUTPUT
CIRCUIT
OUTPUT
CIRCUIT
ANALOG
FILTER
ANALOG
FILTER
DINAMIC
BASS BOOST
CIRCUIT
DIGITAL FILTER CIRCUIT
DEEMPHASIS FILTER CIRCUIT
ATTENUATER OPERATIONAL CIRCUIT
Σ
-
∆
MODULATION CIRCUIT
LRCK
BCLK
D
ATA
DBB
S
D
ATA
SHCK
DACL
T
XVDD
XTLO
XTLI
XGND
CKO
DVDD
TEST
SPLS
A
VDD
RO
AGND
VREF
AGND
LO
A
VDD
µ
UTE-0
DGND
Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
¢
: internal component.
•
C
: panel designation.
•
U
: B+ Line.
•
H
: adjustment for repair.
• Power voltage is dc 3V and fed with regulated dc power
supply from external power voltage jack.
Note:
The components identi-
fied by mark
!
or dotted
line with mark
!
are criti-
cal for safety.
Replace only with part
number specified.
Note:
Les composants identifiés par
une marque
!
sont critiques
pour la sécurité.
Ne les remplacer que par une
piéce portant le numéro
spécifié.
• Voltages and waveforms are dc with respect to ground in
service mode.
no mark : CD PLAY OR COMMON
(
) : FM
<
> : AM
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal production
tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production
tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F
: FM
f
: AM
J
: CD
• Abbreviation
E13
: AC 220 – 230V area model
E33
: AC 100 – 240V area model
E92
: Central & South American
