Magnavox CT270MW8 A, Service Manual, Page: 34 / 92

1-10-3
Audio Block Diagram
T3251BLA
WF19
REC AMP
9
8
AU
T
O
BIAS
11
P-ON+5V
P-ON+5V
Q1871
BIAS OSC
Q1872
Q1873 (PB=ON)
Q1874 (PB=ON)
Q1875
SWITCHING D-REC OFF
6
5
3
EQ AMP
SP/LP-ON
P
R
ALC
REAR
TUNER
FR
ONT
IC1401 (A
UDIO SIGNAL PR
OCESS)
76
4
A
UDIO-PB/REC
CL1402
CN1301
CN2
CN2301
CN1302
CN2302
3
A
UDIO-COM
1
AE-H
2
AE-H/FE-H
A
UDIO
HEAD A
UDIO
ERASE HEAD
A
CE HEAD
ASSEMBLY
FE HEAD
(DECK
ASSEMBLY)
1
FE-H
2
FE-H-GND
CL1403
MAIN CB
A
SUB CB
A
Mode : SP/REC
D-REC-H
T
O
D
VD
A
UDIO
BLOCK DIA
GRAM
<D
VD
SECTION> CN2A
FULL ERASE HEAD
78
80
4
LINE AMP
LPF
MUTE
10
SERIAL I/F
55
54
53
YCA-CS
YCA-SD
A
YCA-SCL
58
A
UDIO-MUTE
JK1801 HEADPHONE JA
C
K
SPEAKER R-CH
CL3802
CN1104
SP802
FUNCTION CB
A
SPEAKER L-CH
CN3801
SP801
SP(R)
1
SP-GND
2
SP(L)
1
SP-GND
2
CL3801
D
VD-A
UDIO-MUTE
SP-MUTE
19
19
D
VD-A
UDIO(R)
17
3 41
7
D
VD-A
UDIO(L)
T
O
Hi-Fi A
UDIO
BLOCK DIA
GRAM
16
9 1
16
D
VD-A
UDIO-MUTE
13
13
DTV
-SPDIF
A
UDIO-OUT(R)
A
UDIO-OUT(L)
N-A-IN N-A-OUT
JK2601
WF20
WF8
DTV
-SPDIF
WF7
PB A
UDIO SIGNAL
D
VD A
UDIO SIGNAL
REC A
U
DIO SIGNAL
DIGIT
AL
A
UDIO-OUT
(CO
X
IAL)
TO SYSTEM CONTROL/SERVO BLOCK DIAGRAM TO DIGITAL TUNER BLOCK DIAGRAM
TO SYSTEM CONTROL/SERVO BLOCK DIAGRAM
2
11
IC1803
(A
UDIO AMP)
7
V
O
LUME
14
1
AMP AMP
MUTE /ST
A
NDBY
CONTR
OL
3 6 8
DV
D
DV
D
VCR VCR
(L-CH) (R-CH)
2
12
DIGIT
AL-A
UDIO-H
DTV
-A
UDIO(L)
DTV
-A
UDIO(R)
TO DIGITAL TUNER BLOCK DIAGRAM
V
OLUME
15
IC1850
(INPUT SELECT)
4
5 3 2 1
9
10
SW CTL
Q2608
BUFFER
Q2609
BUFFER
1,2
1,2
SP(R)
CN1802
JUNCTION-A CB
A
CN3802
1,3
1
,3
SP(L)
CN2401
11
SP(L)
CN2801
JUNCTION-B CB
A
Q2601
BUFFER
Q1850
DVD-H
TO SISTEM CONTROL/SERVO BLOCK DIAGRAM