DOWNLOAD Sony CMT-EP305 / HCD-EP305 Service Manual ↓ Size: 2.04 MB | Pages: 40 in PDF or view online for FREE

Model
CMT-EP305 HCD-EP305
Pages
40
Size
2.04 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
cmt-ep305-hcd-ep305.pdf
Date
PREV: Sony CMT-CP505MD / HCD-CP505 Service Manual

Sony CMT-EP305 / HCD-EP305 Service Manual ▷ View online

17
17
HCD-EP305
AMP Section
• Signal Path
• R-ch is omitted due to same as L-ch.
: FM
: CD
: PB(TAPE)
: REC(TAPE)
IC203
FUNCTION SELECT SWITCH,
ELECTRONIC VOLUME
Q301,302
MUTING
Q314
MUTING
CONTROL
SWITCH
Q201
REC AMP
Q206
MEGA BASS
R-CH
R-CH
R-CH
RL
LTCOM
LTOUT
LVRIN
LVROUT
L3
CD
CD L
CD L
CD R
CDDAT
CDCLK
CDRS
TUNER
L-CH
PL
L4
TUNER
L2
TAPE
DI
CE
46
52
BASS BOOST
MUTE
1
10
9
11
15
16
2
12
11
5
3
3
4
40
DATA
34
CD-RESET
42
CD CLOCK
61
CD DATA
D332
D333
+
+
+
+
–
+
–
SPEAKER
(IMPEDANCE
USE 4
Ω
)
L
R
PHONES
SPK301
JK401
IC601 (2/3)
SYSTEM CONTROLLER
D
A
B
C
CL
14
39
CLOCK
48
CE
TAPE
SECTION
TUNER
SECTION
TAPE
SECTION
TAPE
SECTION
H
DISPLAY
SECTION
CD BLOCK
30
TAPE
COTR
DATA
CLOCK
IC301
POWER AMP
18
18
HCD-EP305
Display/Power Section
LD621
LIQUID
CRYSTAL
DISPLAY
COM0
ı
COM3
KEY R0
ı
KEY R3
Q1
ı
Q7
X
AMP SECTION
H
X
TUNER SECTION
E
S0
ı
S31
44 REMOTE
X602
6MHz
58 X1
59 X2
31
CD
IC601 (3/3)
SYSTEM CONTROLLER,
LIQUID CRYSTAL DISPLAY DRIVER
29
TUNER
51
PSW
32
TIMER STATUS
35
SURROUND
68
CPU RESET
6V
CD 8V
Q116
B+ SWITCH
Q602
SWITCH
TUNER +9V
D317
D307
D310
D308
D311
Q308, 309
+8V
REGULATOR
Q313
+9V
REGULATOR
Q312
+6V
REGULATOR
ZD401
+6V
REGULATOR
9V
D401 – 404
RECT
D411 – 414
RECT
Q401,402
POWER ON/OFF
RELAY DRIVE
Q310,311
REGULATOR
CONTROL SWITCH
TR402
POWER
TRANSFORMER
(SUB)
D405 – 408
RECT
RL401
AC IN
TR401
POWER
TRANSFORMER
(MAIN)
REM601
REMOTE CONTROL
RECEIVER
1
53
SW601 - 615, 621, 622
KEY MATRIX
DPSW2/SLEND
IC301
(POWER AMP)
IC603
RESET SIGNAL
GENERATOR
D611 - 615
2
3
4 - 7,
14 -12
IC602
KEY CONTROL
DATA
CLOCK
SW600
Z
 PUSH
OPEN/CLOSE
D607
D608
D619
TIMER
64-67
21-24
69-80,
1 -20
DC_15V
DC_12V
D1 - D3
(LCD BACK LIGHT)
19
19
HCD-EP305
6-3. Printed Wiring Board  MAIN Section
• See page 15 for Circuit Boards Location.
IC203
IC101
IC102
IC301
L110
AM FERRITE-ROD
ANTENNA
A
K
A
K
MAIN BOARD
E
E
E
A
K
TP10
(FMVT)
TP11(AMVT)
1
2
3
A
A
K
K
E
FM 
ANT
ANT1
E
E
SPEAKER
(IMPEDANCE USE 4
 )
SPK301
+
–
+
–
L
R
A
A
K
K
A
K
A
K
A
A
A
A
K
K
A
K
A
A
K
K
K
A
A
A
K
K
K
A
K
A
A
K
K
K
S201
M201
(PLAY)
(CAPSTAN/REEL)
M
2
1
3
4
B
CASSETTE
BOARD
(Page 22)
C
DISPLAY
BOARD
(Page 23)
D
DISPLAY
BOARD
(Page 23)
A
DISPLAY
BOARD
(Page 23)
E
E
E
E
E
CD
BLOCK
*
*
 SUPPLIED AS THE
      ASSEMBLED BLOCK
E
E
E
E
E
HEADPHONE BOARD
JK401
PHONES
3
4
5
6
1
2
1
5
E
POWER BOARD
CN402
(Page 25)
D309
A
B
C
D
E
F
G
H
I
1
2
3
4
5
6
7
8
9
10
11
Ref. No.
Location
D101
C-5
D102
C-5
D103
B-8
D104
C-9
D105
B-6
D306
G-7
D307
H-9
D308
G-8
D310
H-9
D311
I-9
D312
G-7
D314
G-7
D316
G-7
D317
H-9
D331
D-6
D332
D-6
D333
E-7
D334
F-7
D335
G-7
IC101
B-10
IC102
D-9
IC203
E-5
IC301
G-5
Q101
D-10
Q102
C-10
Q104
B-11
Q116
E-11
Q201
D-4
Q202
E-4
Q205
F-5
Q206
D-4
Q301
F-6
Q302
F-6
Q308
H-8
Q309
H-8
Q310
H-8
Q311
H-8
Q312
G-7
Q313
I-8
Q314
G-7
ZD302
H-7
ZD304
I-6
ZD305
G-7
• Semiconductor
Location
20
20
HCD-EP305
6-4. Schematic Diagram  MIAN Section (1/2)
IC B/D
IC B/D
DSIPLAY
BOARD
A
(Page 24)
MAIN BOARD
(2/2)
1
(Page 21)
0
6.4
6.4
6.4
0.7
1.2
1.2
1.2
0
4.5
5.8
0.6
1
0.6
0
5.8
2.8
2.1
0.9
1.2
1.3
6.6
6.4
0
2.3
0
4.7
1
1
1.5
2.3
9.7
9.7
8.9
0
5.1
5
5.3
0.1
0.1
2.3
0
3.7
6.4
6.4
1.3
1.3
1
FM
LEAD
ANTENNA
ANT1
FM ANT
C134
0.001
C104
0.001
C107
0.001
C114
0.01
C111
0.001
Q101
2SC1923-O
FM OSC BUFFER
R104
1.2k
R136
6.8k
R168
6.8k
C119
1u
50V
C108
4.7u
50V
D105
SVC348T
C135
390p
C131
0.047
C130
10u
50V
R135
4.7k
Q104
2SC945TP
AMP
C127
0.047
C161
0.1
L110
AM-FERRITE-ROD
ANTENNA
B P F
C113
0.01
C120
1u
50V
C156
47u
16V
C126
0.01
C112
0.001
C147
0.01
C148
2.2u
50V
R147
2.2k
C151
0.1
C163
100u
16V
Q116
2SA733TP-P
B+ SWITCH
X102
7.2MHz
C114
0.022
R145
4.7K
R118
3.3k
X101
10.7MHz
F101
10.7MHz
R148
5.6k
C145
100p
C146
0.001
C117
0.0068
C129
4.7u
50V
C118
0.0068
Q102
2SC945TP
BAND
SWITCH
C112
0.22u/ 50V
C123
0.47u/ 50V
C124
1u/ 50V
R112
3.3k
C105
0.001
C157
0.1
TP10
(FM VT)
IC101
AM/FM IF AMP,
MIX, MPX, DET, OSC
IC102
FM/AM PLL
C116
0.022
C162
0.022
TP11
(AM VT)
MAIN BOARD
(1/2)
L103, TC101
FM TRACKING
L104
FM FREQUENCY
COVERAGE
T102
L110, TC102
AM TRACKING
AM FREQUENCY
COVERAGE
33p
33p
• See page 15 for Waveforms.
• See page 27 for IC Block Diagrams.
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