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Model
CMT-EP30 CMT-EP40 HCD-EP30 HCD-EP40
Pages
36
Size
2.1 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
cmt-ep30-cmt-ep40-hcd-ep30-hcd-ep40.pdf
Date
PREV: Sony MHC-VX555 / MHC-VX555J Service Manual

Sony CMT-EP30 / CMT-EP40 / HCD-EP30 / HCD-EP40 Service Manual ▷ View online

HCD-EP30/EP40
16
16
IC B/D
IC B/D
IC B/D
2
MAIN BOARD
(2/2)
1
DSIPLAY
BOARD
A
1
4.5 (4.3)
L110, TC102
AM TRACKING
T102
AM FREQUENCY
COVERAGE
L103, TC101
FM TRACKING
L104
FM FREQUENCY
COVERAGE
0 (0.7)
5.4
(0.1)
0
1
(0)
5.2 (0)
5.2 (6.2)
5.2 (6.2)
0 (6.2)
1.3
1.3
1.2 (0.4)
4.5 (0.1)
4.5 (4.3)
4.5 (5.6)
4.5 (4.3)
0
4.5 (0.1)
0 (0.7)
0.2
(0.4)
5.2
(5.4)
1.3
1.3
5.2 (6.2)
5.2 (6.2)
2.8 (3.6)
0
5.2
(6.2)
5.2
(6.2)
1.3
1.3
0.3 (0.5)
0
0 (2.6)
2.6 (0)
5.1
0.9
0.9
2.4 (1.5)
2.6
2.5
0.1
0.1
5.4
0
0.1 (3.1)
0
9.3
9.2
8.5
0.7
0
0
0
5.4
5.6
5.4
4.8
2.4
0
0
4.5
2.4
*
2.2
2.2
1.6
4.5
2.4
FM
LEAD
ANTENNA
ANT1
FM ANT
75
Ω
COAXIAL
C157
0.1
C104
0.001
L103
FM RF
C105  0.001
L104  FM OSC
C111
0.001
TP10
(FM VT)
R112
3.3k
+
10V
0.001
0.01
1.2k
0.001
+
50V
0.0015
0.0015
3.9k
+
+
3.9k
50V
50V
6.8k
6.8k
0.0033 0.0033
+
+
+
50V
3.3k
50V
50V
Q103
STEREO/MONO
SWITCHING
Q102
FM/AM BAND
SELECT SWITCH
Q101
FM OSC BUFFER
IC101
FM/AM IF AMB
MIX, MPX, DET, OSC
IC102
FM/AM PLL
4.7k
100p
0.001
0.022
5.6k
0.01
2.2k
50V
5.6k
+
+
0.1
0.1
7.2MHz
+
MTZJ-5.1
+
10V
1
µ
H
Q116, 209, 210
TUNER B+ SWITCH
Q109, 605
B+ SWITCH
0.1
CN101
8P
0.047
AM FERRITE-ROD
ANTENNA
1
µ
H
AM OSC
0.047
+
50V
TP11
(AM VT)
0.022
0.022
10.7MHz
450kHz
+
50V
BUFFER
+
0.047
IC604
RDS DECODER
EP40
100
µ
H
0.1
+
0.1
4.7k
+
+
16V
2.2
50V
T2
T1
VSS2
VDD2
XI
XO
NC
RCLK
CMP
VSS3
VSS1
VDD1
MUX
VREF
RDAT
QUAL
MAIN BOARD
(1/2)
1N4148TP
1N4148TP
U
1
u
U
2
u
U
3
u
U
4
u
2SC1923
2.2P
10.7MHz
2SD1616-L
16V
RDSCL
RDSDA
PLLCE
PLLDI
PLLCL
STOUT
SIG
CT
470
16V
6-2.
SCHEMATIC  DIAGRAM  – MAIN Board (1/2) –
•
 See page 23 for Waveforms.
•
 See page 24 for IC Block Diagrams.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM
(
) : AM
∗
: Impossible to measure
(Page 21)
(Page 17)
HCD-EP30/EP40
17
17
IC B/D
POWER
BOARD
CN402
E
CASSETE
BOARD
B
MAIN BOARD
(1/2)
1
DISPLAY
BOARD
D
DISPLAY
BOARD
C
9P
9P
5.3
4.8
7.8
0
0
3.6
3.9
3.9
3.9
3.9
3.9
3.9
3.9
3.9
3.9
3.9
3.9
3.9
3.9
3.9
3.9
3.9
3.6
0
0
3.9
0.1
1.9
1.4
2.1
1.9
2.1
1.4
5.6
6.2
13.5
9.9
9.3
13.7
0
MEGA BASS
ON : 0.1
OFF : 0.7
0
MEGA BASS
ON : 0.1
OFF : 0.7
0.8 (9.5)
13.7
0.8
(10)
0.6 (13.6)
13.7
13.6
(12.9)
13.6
(0)
0
(0.7)
0.6
(0)
13.7
13.7
13
0.3
0.7
0
0 [0.6]
0
0 [0.6]
0
[0.6]
0 [1.1]
0
16.4
0.6
0.6
0
16.1
8.7
8.7
16.1
16.7
8.7
CN201
9P
3.9k
3.9k
50V
+
+
1  50V
Q201, 202
REC AMP
+
+
+
4700p
+
0.1
0.1
0.1
0.0082
0.0039
0.0033
0.047
8.2k
0.027
0.1
0.1
0.1
0.0082
0.0039
5.6k
8.2k
0.027
0.047
0.0033
+
4.7
50V
+
50V
6.8k
0.001
8.2k
4.7
50V
+
+
50V
+
+
50V
50V
4.7
50V
6.8k
8.2k
0.001
4.7k
4.7k
2.2k
3.3k
2.2k
3.3k
50V
+
IC203
FUNCTION SELECT SWITCH,
ELECTRICAL VOLUME
MTZJ-6.2B
Q312
+6V REGULATOR
+
0.022
50V
+
+
10V
MTZJ-10B
Q313
+9V REGULATOR
+
0.022
+
MTZJ-10B
4.7k
Q310, 311
REGULATOR CONTROL
SWITCH
Q305, 306
B+ SWITCH
0.022
+
50V
+
DC_15V
0.1
+
+
50V
Q301, 302
MUTING
Q308, 309
+9V REGULATOR
0.001
+
16V
+
16V
+
50V
0.001
50V
+
Q314
MUTING CONTROL
SWITCH
IC301
POWER AMP
+
25V
+
+
0.15
0.15
+
+
25V
PHONES
CN301
5P
+
–
+
–
R
L
SPEAKER
IMPEDANCE
USE 4
Ω
+
–
+
–
BIAS CIRCUIT,
HEAT OPERATION
PROTECTION CIRCUIT
MAIN BOARD
(2/2)
CN202
4P
M201
(CAPSTAN/REEL)
S201
(PLAY)
0.1
AM FREQ STEP
10 kHz
R
9 kHz
+
Q205, 206
MEGA BASS
ON DRIVE
1N4148TP
1N4148TP
1N4148TP
1N4148TP
1N4148TP
1N4148TP
1N4148TP
U
1
u
U
2
u
U
3
u
U
4
u
BEAT
RL
RR
GND
PL
PR
9V
SYNC
COTR
0.047
2200p
16V
16V
16V
5.6k
2SD1616-L
+
2SD1616-L
2SD1616-L
1N4148TP
1N4148TP
1N4148TP
1N4148TP
2.7k
2.7k
2200p
9P
*CD
BLOCK
*SUPPLIED AS THE
ASSEMBLED BLOCK
CDDATA
CDCLK
CDRS
DAT
CLK
CE
DBBS
BEAT
SYNC
9K/10K
MUTE
PSW
GND
LED V+
TU –SW
TA –SW
CD –SW
6V
6
1
1
2
3
4
5
6
7
5
1
HEADPHONE BOARD
3.3k
3.3k
6-3.
SCHEMATIC  DIAGRAM  – MAIN (2/2)/HEADPHONE Boards –
•
 See page 24 for IC Block Diagram.
• Voltages are dc with respect to ground under no-signal
(detuned) conditions.
no mark : TUNER (FM/AM)
(
) : CD PLAY
[
] : TAPE PLAY
(Page 19)
(Page 16)
(Page 21)
(Page 21)
(Page
22)
HCD-EP30/EP40
18
18
MAIN BOARD
L110
AM FERRITE-ROD
ANTENNA
AK
A
KA
T102
AM
OSC
L103
FM RF
+
1
2
3
B
C
E
E
C
B
E
C
B
E
C
B
+
+
+
+
+
+
+
+
+
A
K
+
+
+
+
+
KA
TP10
(FM VT)
TP11
(AM VT)
B
C
E
E
C
B
E
C
B
E
C
B
16
9
1
8
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
FM LEAD
ANTENNA
FM ANT
75
Ω
COAXIAL
ANT101
EC
B
EC
B
E C B
EC
B
BC
E
BC
E
EC
B
EC
B
B C E
BC
E
BC
E
EC
B
EC
B
B C E
EC
B
B C E
FM FREQ
STEP
*
CD
BLOCK
*
 SUPPLIED AS THE
      ASSEMBLED BLOCK
SW301
SPEAKER
(IMPEDANCE USE 4
Ω
)
SPK301
9 kHz
r
10kHz
+
–
+
–
L
R
A
K
K
A
K
K
K
A
A
K
A
A
K
K
K
K
K
K
A
A
A
A
K
A
A
A
A
K
IC101
IC102
IC604
IC203
IC301
A
K A
K
U04
FM OSC
(EP40)
(EP40)
(EP40)
1
6
E
POWER BOARD
CN402
S201
(PLAY)
M201
(CAPSTAN/REEL)
M
2
1
3
4
C
B
DISPLAY
BOARD
CASSETTE
BOARD
A
DISPLAY
BOARD
D
DISPLAY
BOARD
R413
HEADPHONE BOARD
R412
JK401
PHONES
3
4
5
6
1
2
7
1
5
A
B
C
D
E
F
G
H
I
1
2
3
4
5
6
7
8
9
10
6-4.
PRINTED  WIRING  BOARDS  – MAIN/HEADPHONE Boards –
•
 See page 15 for Circuit Boards Location.
• Semiconductor
Location
Ref. No.
Location
D101
B-4
D102
B-5
D103
B-8
D104
C-9
D105
B-5
D302
G-6
D303
G-6
D306
F-6
D307
H-8
D308
G-7
D310
H-8
D311
H-8
D312
F-6
D314
F-7
D316
F-6
D317
H-8
IC101
B-9
IC102
D-8
IC203
D-5
IC301
G-5
IC604
E-8
Q101
D-9
Q102
C-10
Q103
B-10
Q104
A-10
Q109
C-8
Q116
D-10
Q201
D-4
Q202
E-4
Q205
F-4
Q206
D-4
Q209
E-8
Q210
E-9
Q301
F-5
Q302
F-6
Q305
H-6
Q306
G-7
Q308
H-7
Q309
H-7
Q310
G-8
Q311
G-7
Q312
G-7
Q313
H-7
Q314
G-6
Q605
G-7
ZD103
E-9
ZD302
H-7
ZD304
H-6
ZD305
G-7
(Page 20)
(Page 20)
(Page 19)
(Page 20)
(Page 23)
HCD-EP30/EP40
19
19
6-5.
PRINTED  WIRING  BOARD  – CASSETTE Board –
•
 See page 15 for Circuit Boards Location.
6-6.
SCHEMATIC  DIAGRAM  – CASSETTE Board –
•
 See page 23 for Waveforms.
•
 See page 24 for IC Block Diagram.
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
no mark : TAPE PLAY
(
) : RECORD (ISS 1)
[
] : RECORD (ISS 2)
IC701
+
A
K
+
+
+
+
+
+
+
+
+
+
+
BC
E
EC
B
EC
B
BC
E
EC
B
E C B
+
A
K
HPRE701
REC/PB/ERASE
HEAD
–1
–2
–3
–4
–5
–6
SW701
(REC/PB)
REC
PB
CASSETTE BOARD
B
MAIN BOARD
CN201
A
B
C
1
2
3
4
5
• Semiconductor
Location
Ref. No.
Location
D701
B-4
D702
B-4
IC701
B-3
Q701
A-4
Q702
B-4
Q703
B-4
Q704
A-2
Q705
B-2
Q706
C-2
1
2
3
3
MAIN
BOARD
(2/2)
CN201
B
IC B/D
0
1.2
1.4
3.9
0
0
7.8
7.7
0
3.9
1.4
1.2
0
0 (0.7)
0
0 (0.7)
0
0
(3.5)
0.7 (0)
0.7
0
9.3 (0.8)
9.3 (0.8)
8.9 (0.3)
0.4 (0)
[21.4]
0 (0.7)[0]
R-CH
L-CH
ERASE
HRPE701
RECORDE/PLAYBACK
ERASE
CN701
4P
0.0015
0.0018
SW701 (4/6)
(REC/PB)
REC
R
PB
SW701 (2/6)
(REC/PB)
REC
r
PB
SW701 (3/6)
(REC/PB)
REC t PB
Q705
ISS SWITCHING
0.0027
0.022
0.022
+
50V
0.022
0.0068
Q706
REC BIAS OSC
SW701 (6/6)
(REC/PB)
REC T PB
MUTING
CONTROL
SWITCH
Q704
REC ON SWITCH
25V
+
1SS133T
-77
+
+
50V
5.6k
1.2k
0.1
SW701 (1/6)
(REC/PB)
REC
R
PB
0.1
50V
+
+
0.022
50V
+
+
0.1
50V
+
+
0.1
5.6k
1.2k
IN1
NF1
PC1
OUT1
GND
IN2
NF2
PC2
OUT2
VCC
ALC
IN1
ALC
CONST
ALC
IN2
RF
SW701 (5/6)
(REC/PB)
REC
r
PB
50V
+
IC701
ALC, REC/PB AMP
Q701, 702
MUTING
50V
50V
+
+
CASSETE BOARD
0.0018
0.0018
330
2SD1616-L
50V
100k
1N4148TP
4.7k
(Page 18)
(Page 17)
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