Read Sony CMT-EP50LIV / HCD-EP50LIV Service Manual online
HCD-EP50LIV
20
20
IC B/D
IC B/D
IC B/D
MAIN BOARD
(2/3)
2
MAIN BOARD
(2/3)
1
NC
MAIN BOARD
(2/3)
3
DSIPLAY
BOARD
A
DSIPLAY
BOARD
B
MAIN BOARD
(3/3)
4
DSIPLAY
BOARD
C
MAIN BOARD
(3/3)
6
MAIN BOARD
(2/3)
5
1
INCLUDED IN
MAIN BOARD
MAIN BOARD
G
T6, TC1
AM TRACKING
T8
AM FREQUENCY
COVERRAGE
AM IF
12.5
11.3
(0)
(0)
12 (0.1)
12.2 (0.1)
0.1 (0.7)
3.6
7.7 (8)
3.6
3.6
5.8
5.8
7.7 (8)
7.7 (8)
1.2
0.5 (0)
0
0
6.6 (3.8)
3.7
4.3
4.3
4.3
4.3
3.3
3.3
2.9
3.9
0 (0.6)
0 (0.6)
2.8 (3.6)
2.8 (3.6)
3.7
3.7
2.1
6.7 (0.1)
0.1
(0.7)
6.7
0
0
0 (2.3)
2.3 (0)
4.9
0.9
0.9
1.3
2.4
2.3
0
0
4.9
4.9
0.1 (4)
0
4.9
4.1
4.9
0.7
0.1
0
0
0
0
0
0
0
0
4.4
4.4
4.4
4.5
4.5
8.1
4.5
0
5
0 {0} [0] <4.6>
0 {0} [4.6]
<0>
0 {4.6}
[0] <0>
4.6 {0} [0] <0>
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
4.6 {0} [0] <0>
0 {4.6} [0] <0>
0 {0} [4.6] <0>
0 {0} [0] <4.6>
7.7
5
0
AM ANT
CN12
FM ANT
75
Ω
COAXIAL
CN13
i
CLOCK
i
DA_IN
i
RR-CH
i
RL-CH
i
TR-CH
i
TL-CH
i
RF INPUT
i
GND
i
GND
i
GND
i
VT
i
VCC
i
IF OUTPUT
i
OSCO
*CD
BLOCK
*SUPPLIED AS THE
ASSEMBLED BLOCK
CN3
9P
Q4, 10
B+ SWITCH
AM RF
U1
FM/AM IF AMP,
AM RF AMP/MIX/OSC,
FM/AM DET, MPX
U1
LA1837
OSC BUFF
FM SD. ADJ
AM-OSC
REG
AM-
RF-IN
AM-AGC
AGC
AM-DET
OUT
FM-DET
OUT
MPX-IN
OUT L
OUT R
AMP-
IN L
AMP-
IN R
AMP-
OUT L
AMP-
OUT R
FM-IN
AM-MIX
FM-IF
AM-IF
GND
TUNED
STEREO
VCC
FM DET
AM. SD
FM. SD
AM. SD
ADJ
IF-BUFF
MUTE
AM/FM
VCO-STOP
Q3
FM/AM BAND
SELECT SWITCH
Q17
STEREO/MONO
SWITCHING
Q1, 11
B+ SWITCH
IFIN
IO2
AMIN
FMIN
VDD
PD
AIN
AOUT
VSS
XOUT
XIN
CE
DI
CL
DO
BO1
BO2
BO3
BO4
IO1
U2
FM/AM PLL
U6
INPUT SELECT SWITCH,
ELECTRICAL VOLUME
U3
LINE AMP
VCC
GND
Q13, 16
MEGA BASS CONTROL SWITCH
Q6, 7
MUTING
CE
VSS
VREF
R1
R2
R3
R4
RT1
RT2
RT3
RT4
RTCOM
RTOUT
RVRIN
RVROUT
LVROUT
LVRIN
LTOUT
LTCOM
LT4
LT3
LT2
LT1
L4
L3
L2
L1
VDD
CL
DI
i
TIMER
i
TU-EN
i
STR
i
POWER-FAIL
i
POWER-LINE
i
REC. LED+
i
BEAT
i
MUTE-LINE
i
R-CH
i
L-CH
CN4
3P
RDS_DA
CN11
7P
DA
CLK
RESET
RESET
DA
CLK
MAIN BOARD
(1/3)
TP
(AM VT)
CN5
11P
11P
0.1
0.1
0.001
0.001
50V
50V
0.022
50V
50V
50V
50V
50V
50V
50V
50V
50V
50V
50V
50V
0.033
0.047
0.0056
0.022
0.047
0.1
50V
0.1
0.1
0.1
0.001
0.001
0.1
0.1
0.1
50V
0.047
0.0056
0.022
0.0047
0.033
50V
50V
0.1
50V
0.047
50V
0.047
0.047
50V
50V
50V
50V
0.0068
0.0047
0.0047
0.0047
0.022
L. P. F.
50V
50V
0.033
16V
0.0068
L. P. F.
0.0047
0.022
0.047
50V
0.047
50V
0.001
0.047
0.001
R239
3.3M
1/2W
3.3M
1/2W
0.047
16V
0.047
0.001
TP
(FM VT)
1SS133T
1SS133T
1SS133T
1SS133T
1SS133T
16V
0.47 50V
0.47 50V
1SS133T
1SS133T
6-7.
SCHEMATIC DIAGRAM – MAIN Board (1/3) –
•
See page 28 for Waveform.
•
See page 28 for IC Block Diagrams.
(Page 19)
(Page 21)
(Page 21)
(Page 21)
(Page 25)
(Page
25)
(Page 22)
(Page
25)
(Page 21)
(Page 22)
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