Sony CFD-E90L, Service Manual

Page: 22 / 63

CFD-E90L
21 21
INPUT SELECT,
REC/PB PRE AMP
IC301
POWER
AMP
IC304
: CD PLAY
: TUNER (FM/MW/LW)
: TAPE PLAY
: REC
: LINE IN
X802
4.19MHz
R-CH
L IN
L OUT
VREF
L.LO
MIC IN
L.CD
L.RAD
VREF
VREF
TC 6V
L.IN
L-CH
R-CH
LINE TAPE REC
45 44
R-DATA
R-CLK
R-LAT
R-COUNT
59
57
58
56
17 15 21
6
20 11
5
L.RO
4
22
24
13
TU L-OUT
R-CH
R-CH
R-CH
MUTE
MUTE
HRP301
(REC/PB)
HE301
(ERASE)
TA
P
E
36
REC
29
B
(Page 20)
(Page 19)
(Page 20)
C
PB
EQ AMP
MONITOR
AMP
5
POWER
AMP
STANDBY
SWITCH
MIC
AMP
REC
EQ AMP
BIAS OSC
Q301
WAKEUP
SWITCH
Q805
MODE CHECK
SWITCH
Q813
CD/LINE
SELECT
SWITCH
Q160, 161
REFERENCE VOLTAGE
GENERATOR
LOGIC CIRCUIT
DET
ALC
BUFFER
BUFFER
T301
BIAS OSC
SP2
(L-CH)
SP1
(R-CH)
J321
(PHONES)
X801
32.768kHz
XT2 XT1
71 70
X2 X1
75
WP/INI
50
MODE CHK
46 74
SYSTEM CONTROLLER
IC801 (2/3)
S301 (2/2)
(REC/PB)
ST
-BY
V-
D
A
TA
V
-CLK
8
78 77
REC PB
S301 (1/2)
(REC/PB)
REC PB
B-MUTE 60
(Page 20)
D
R-MUTE
(Page 22)
E
CD, LINE CD
LINE
CD L-OUT
A
AF AMP
Q125
8
R-CH
LOGIC
CONTROL
4 5
7
ELECTRICAL VOLUME
IC302
M-BASS
68
51 JOG-A
67 JOG-B
ENCODER
RE401
S401 – 403,
S405 – 407
S408 – 416
MEGA BASS
CONTROL
Q122
D323
D322
+9V
R-ch is omitted due to same as L-ch.
SIGNAL PATH
KEY1 KEY2
L-IN
L-OUT
DATA CLK
Q303
Q302
Q302, 303
ISS SWITCHING
ISS2
37
ISS1
80
R-DATA
R-CLOCK
R-CE
R-COUNT
IF REQUEST
Q806
D802
–
. >
+
D801
J301
LINE IN
A-MUTE
66
MUTING
Q124
R-CH
R-CH
6-3. BLOCK DIAGRAM – MAIN Section –