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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

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

HCD-EP30/EP40
21
21
MAIN BOARD (2/2)
CN204
D
MAIN BOARD (2/2)
CN302
C
MAIN
BOARD
(1/2)
CN101
A
1
2.4
2.4
2.4
2.4
2.4
2.4
4.7
4.7
3.2
1.6
0 (4.7)[4.7]
0 (4)[0]
1.4 (0)[1.4]
4.6
4.6
4.5
0
5.3
5.2
4.7
5.3
5.2
5.3
2.2
5.2
0 {3.5}
0
0
0
*
4.7
MEGA BASS
ON : 0.1
OFF : 4.7
0
4.7
4.7
2.4
2.9
5.2
4.6
4.3
5.2
5.2
5.2
5.2
5.6
2.4
2.4
2.4
2.4
2.4
2.4
2.4
2.4
2.4
2.4
(US, CND, E, AUS)
2.4
2.4
(AEP, UK, E, AUS)
(US, CND)
(US, CND, E, AUS)
5.2
5.2
4.7
5.2
0.6
0.6
5.3
5.3
5.3
5.3
5.3
4.7
5.3
5.3
5.3
5.3
5.3
5.3
5.3
5.6
5.6
0     5.6
0     0.1
0
0
0     5.6
0     0.6
(AEP, UK)
SEL2215S-CD
D619
TIMER
LIQUID CRYSTAL DISPLAY
UPD753016AGC-F31-3B9
IC601
SYSTEM CONTROLLER
LIQUID CRYSTAL DISPLAY DRIVER
COM0
S31
S30
S29
S28
S27
S26
S25
S24
S23
S22
S21
S20
S19
S18
S17
S16
S15
S14
S13
S12
COM1
COM2
COM3
BIAS
VLC0
VLC1
VLC2
TUNER
TAPE
CD
TIMER STATUS
VSS
CD RESET
SURROUND
PLL CL
PLL DI
TUNER SD
CLOCK
DATA
S11
S10
S9
S8
S7
S6
S5
S4
S3
S2
S1
S0
CPU RESET
KEY R3
KEY R2
KEY R1
KEY R0
12/24H SELECT
NC
CD
DATA
PLLDO
SELECT
X2
X1
IC
XT2
XT1
VDD
DPSW2/SLEND
BASS BOOST
PSW
RDS DATA
SHRST
CE
PLLCE
MUTE
SYNCRO
REMOTE
RDS CLOCK
CD CLOCK
STEREO
1.8k
1.8k
BUFFER
+
+
0.1
0.1
+
10V
Q602
POWER
ON/OFF
SWITCH
REM601
REMOTE
CONTROL
RECEIVER
REM601
RPM6938
10V
+
0.1
IC602
KEY CONTROL
L934SGC/B
D11-19
(LCD BACK LIGHT)
SW601
SW612
SW613
SW611
SW608
SW610
SW622
SW621
SW605
SW606
SW602
SW604
SW607
MEGA
BASS
SW615
I /1
TAPE
TUNER
REMAIN
CD
TUNER DSPL
x
+
G
O
I
16V
0.0022
(EP40)
RDS
(EP40)
u
REPEAT
SW603
SHUFFLE
MUSIC
MENU
SW614
TUNER MEM
ENTER PGM
TUNING +
M >
SW609
TUNING –
. m
SW605 SW606
+
PRESET
SW621 SW622
+
VOLUME
IC603
RESET SIGNAL
GENERATOR
IC603
P5290
L934SGC/B
L934SGC/B
L934SGC/B
L934SGC/B
L934SGC/B
L934SGC/B
L934SGC/B
L934SGC/B
1N4148TP
1N4148TP
1N4148TP
1N4148TP
1N4148TP
1N4148TP
1N4148TP
Z
PUSH
OPEN/CLOSE
SW600
DISPLAY BOARD
D604
1N4148AP
D616
1N4148TP
1N4148TP
1N4148TP
1N4148TP
1N4148TP
1N4148TP
0.1
0.1
0.1
(MONO STEREO)
ST t MONO
ISS
2 t 1
0.1
10
16V
1000
6.3V
1N4148TP
180
180
180
1
9
1
9
2.2k
6-8.
SCHEMATIC  DIAGRAM  – DISPLAY Board –
 See page 23 for Waveform.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM
<
> : AM (9 kHz STEP)
〈〈
 
〉〉
: AM (10 kHz STEP)
(
) : CD PLAY
[
] : TAPE PLAY
{
 } : RECORD
: Impossible to measure
(Page 16)
(Page 17)
(Page 17)
HCD-EP30/EP40
22
22
6-9.
SCHEMATIC  DIAGRAM  – POWER Board –
• Voltages are dc with respect to ground under no-signal
conditions.
no mark : TUNER (FM/AM)
The components identified by mark 
0
 or dotted
line with mark 
0
 are critical for safety.
Replace only with part number specified.
Les composants identifiés par une marque 
0
 sont
critiques pour la sécurité.
Ne les remplacer que
par une pièce portant le numéro spécifié.
6.2
6.7
7.9
0.6
0
0.5
1.1
1.1
0.7
1.1
MAIN BOARD
(2/2)
CN304
E
CN402
6P
B GND
+
C404  0.022
C402  0.022
+
C408  0.022
C406  0.022
TR401
POWER
TRANSFORMER
MTZJ-6.8B
+
+
+
Q404
+6V REGULATOR
+
Q401–403
POWER ON/OFF
RELAY DRIVE
TR402
POWER
TRANSFORMER
2.2k
C421  0.001  250V
RL401
AC IN
POWER BOARD
8050D
3.15A 125V
(AEP, UK, E, AUS)
(US, CND)
2A 125V (US, CND)
(AEP, UK, E, AUS)
8050D
2.2k
(Page 17)
HCD-EP30/EP40
23
23
4.4 Vp-p
167 ns
0.8 Vp-p
12.4 
µ
s
1.3 Vp-p
12.4 
µ
s
47.2 Vp-p
11.8 
µ
s
3.1 Vp-p
139 ns
3.2 Vp-p
231 ns
POWER BOARD
+
+
A
K
A
K
K
A
K
A
A
K
A
K
A
A
K
K
A
A
K
K
MAIN
BOARD
K
A
K
A
A
K
A
K
+
+
+
+
B C E
B C E
E C B
B C E
AC IN
TR402
POWER
TRANSFORMER
TR401
POWER
TRANSFORMER
E
A
B
C
D
E
1
2
3
4
5
6-10. PRINTED  WIRING  BOARD  – POWER Board –
 See page 15 for Circuit Boards Location.
• Semiconductor
Location
Ref. No.
Location
D401
D-1
D402
C-1
D403
D-1
D404
C-1
D405
B-2
D406
C-2
D407
B-2
D408
B-2
D409
C-3
D411
C-3
D412
D-3
D413
C-3
D414
D-3
Q401
B-3
Q402
B-3
Q403
B-3
Q404
B-3
ZD401
B-3
 Waveforms
– MAIN Board –
1
IC102 
w;
 (XOUT)
– CASSETTE Board –
1
Q705 (Collector)
(RECORD (ISS 2) mode)
2
IC604 
qf
 (XO)
2
Q706 (Base) (RECORD mode)
3
Q706 (Collector, Emitter)
(RECORD mode)
– DISPLAY Board –
1
IC601 
tl
 (X2)
(Page 18)
HCD-EP30/EP40
24
24
RIPPLE FILTER
ALC
14
13
12
1
2
3
11
10
9
AMP. CH2
AMP. CH1
8
4
5
6
7
VCC
RF
ALC IN2
OUT2
PC2
NF2
IN2
GND
ALC CONST
ALC IN1
OUT1
PC1
NF1
IN1
ANALOG
DIGIT
AL
RCLK
NC
XO
XI
VSS2
T2
VDD2
T1
QUAL
RDA
T
VREF
MUX
VDD1
VSS1
VSS3
CMP
1
4
3
6
5
8
7
2
14
15
16
13
12 11 10
9
CLOCK
PLL 57kHz
RDS/ARI
COMPARATOR
8th SWITCHED
CAPACITOR
FILTER
ANTI-ALIASING
FILTER
BIPHASE
DECODER
PLL
1187.5Hz
DEFFERENTIAL
DECODER
TEST
+
3
6
9
12
15
2
5
8
11
14
1
4
7
10
13
28
25
22
19
16
29
26
23
20
17
30
27
24
21
18
+


LATCH
DECODER
CONTROL
SHIFT
REGISTER
+
LVROUT
LVRIN
LTOUT
LTCOM
LT4
LT3
LT2
LT1
L4
L3
L2
L1
VDD
CL
DI
RVROUT
RVRIN
RTOUT
RTCOM
RT4
RT3
RT2
RT1
R4
R3
R2
R1
VREF
VSS
CE
24
23
FM
RF
1
AM
RF
GND2
2
VCC2
REG
3
AM
MIX
AM
OSC
OSC
BUFFER
4
22
21
VCC1
20
FM
OSC
PHASE
COMP
FM
MIX
DECODER
5
6
19
GND1
7
MUTE
8
18
17
16
9
15
PILOT
DET
14
FM
DET
13
10
FM
S-METER
11
12
ST
ST  SW
FF
VCO
FF
FF
TRIG
AM
IF
AM
DET
AGC
FM
IF
SD
IF
BUFFER
 FMRF IN
RF GND
FMRF OUT
VCC2
FM OSC
DET OUT
MUTE
R
L
AM/FM
MO/ST
FM DET
AMRF IN
REG
AM OSC
VCC1
FM MIX
GND
FM BUFFER
AM OSC BUFFER
AM MIX
QUAD
AMIF
SD
PHASE
DETECTOR
CHARGE PUMP
SWALLOW COUNTER
1/16, 1/17 4BITS
12BITS
PROGRAMMABLE
DRIVER
UNIVERSAL
COUNTER
REFERENCE
DIVIDER
POWER
ON
RESET
1/2
CCB
INTERFACE
1
3 4 5 6
7 8 9 10
18
17
16
15
13
12
11
19
20
21
22
XOUT
VSS
AOUT
AIN
PD
VDD
FMIN
AMIN
14
NC
XIN
DO
CL
DI
CE
2
NC
IFIN
IO1
BO4
BO3
BO2
BO1
IO2
UNLOCK
DETECTOR
DATA SHIFT REGISTER LATCH
IC102
LC72131
• IC Block Diagrams
– MAIN Board –
IC101
LA1823
IC203
LC75392
– CASSETTE Board –
IC701
AN7312
IC604
BU1924F-E2 (HCD-EP40)
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