Sony CMT-EP505 / HCD-EP505 Service Manual ▷ View online
HCD-EP505
27
27
MAIN
BOARD
(1/3)
15
MAIN
BOARD
(1/3)
13
MAIN
BOARD
(1/3)
16
POWER
BOARD
CN505
J
MAIN
BOARD
(2/3)
17
5.5
13.9
6.1
15.1
9.1
12.3
11.9
15.1
14.8 (0.1) <14.8>
0 (0.7) <0>
15.1
(8.6)
15.1
15.1
0 (9.5) <0>
0 (9.4) <0>
15.1
2 (9.1) <2>
18
18
0.7
1.1
1.1
0.7
18.5
37.5
3.6
3.6
0
0
0.6
8.1
0.6
7
6
4
9
8
5
1
2
3
H501
PHONES
HEADPHONE BOARD
+
−
−
+
L
R
SPEAKER
IMPEDANCE
USE 8Ω
CN503
CN503
4P
CN504
5P
U801
U503
U502
I
G
O
MAIN BOARD
(3/3)
Q802, 803
+8V REGULATOR
+12V REGULATOR
133
9.1B
2SA608
REGULATOR
CONTROL SWITCH
133
50V
133
50V
133
12B
50V
+9V REGULATOR
Q801
+5V REGULATOR
2SD1616
50V
133
133
6.2B
16V
HEADPHONE AMP
1
5
1
7
50V
50V
POWER AMP
MUTING
5.6K
5.6K
50V
50V
133
MUTING
6-13. SCHEMATIC DIAGRAM – MAIN (Except AEP, UK, CH models) (3/3) Section –
•
See page 19 for Waveforms.
•
See page 32 for IC Block Diagrams.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : TUNER
(
no mark : TUNER
(
) : CD PLAY
<
> : TAPE PLAY
Ver 1.1
(Page
25)
(Page 25)
(Page
25)
(Page 26)
(Page 31)
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.
HCD-EP505
28
28
D301
A-2
D302
A-2
D303
A-2
D304
A-2
D305
A-1
D306
A-1
D307
A-2
D308
B-1
D309
C-5
D310
C-5
D311
D-2
D312
A-6
D313
C-4
D316
C-2
D317
C-2
D901
E-6
D902
E-6
D903
E-6
IC301
B-4
IC302
C-2
IC304
C-2
IC305
E-2
Q301
D-2
Q302
D-3
Q304
A-6
Q305
C-5
Q306
C-3
Q307
A-2
Q308
A-2
X302
B-2
6-14. PRINTED WIRING BOARD – DISPLAY Section –
R374
R375
IC301
IC302
IC305
1
8
9
16
IC304
X302
B C E
E
C
B
C
B
LIQUID CRYSTAL DISPLAY
4
1
1
5
E
C
B
C
B
1 2
3
B C E
+
+
+
+
+
+
+
+
+
DISPLAY BOARD
51
50
75
76
100
75
1
25
26
MEGA BASS
MUSIC MENU
SW315
7
1
D
MAIN BOARD
CN302
SW300
PUSH
OPEN/CLOSE
A
MAIN BOARD
CN305
1
3
5
2
1
X303
ROTARY ENCODER
4
1
3
C
MAIN BOARD
CN307
VOLUME
TUNER
CD
TAPE
PRESET
+
−
SW311
SW310
TUNING
+
−
SW314
SW313
1
11
2
1
B
MAIN
BOARD
CN303
1 2
D901 - 903
(LCD BACK LIGHT)
INCLUDED IN
DISPLAY BOARD
(AEP, UK)
D303, SW317
DISPLAY
TIMER
A
B
C
D
E
1
2
3
4
5
6
2
1
11
TUNER MEM
ENTER
PLAY MODE
RDS/DIR
PLAY MODE
DIR
SW305
SW305
(AEP, UK)
(EXCEPT AEP, UK)
SW301 − 312, 315 − 317
3
1
(HK)
US, CND, E51,
MX, AR
(AEP, UK, CH)
SW316
E
C
B
C
B
E
C
B
Q308
D304
US, CND, E51,
MX, AR
C
E
B
E
B
Q307
(HK)
(AEP, UK, CH)
(AEP, UK, HK, CH)
(AEP, UK, CH)
EXCEPT
US, CND
I
MAIN BOARD
CN302
EXCEPT
AEP, UK, CH
(AEP, UK, CH)
EXCEPT
AEP, UK, CH
F
MAIN BOARD
CN305
(AEP, UK, CH)
(AEP, UK, CH)
(AEP, UK, CH)
H
MAIN BOARD
CN307
EXCEPT
AEP, UK, CH
(AEP, UK, CH)
EXCEPT
AEP, UK, CH
G
MAIN
BOARD
CN303
• Semiconductor
Location
Ref. No.
Location
(Page 20)
(Page 24)
(Page 20)
(Page 20)
Ver 1.1
(Page 24)
(Page 20)
(Page 24)
(Page 24)
HCD-EP505
29
29
IC B/D
3
4
0
4
0
4.8
4.8
4.8
4.8
0
5.8
4.8
5.2
5.4
∗
∗
4.2
(AEP, UK)
(EXCEPT AEP, UK)
∗
4.2
2
2
1.5
4
4
2.1
2.1
∗
0
2.1
5.4
4.8
2.5
2.3
4.8
4.8
4.8
5.4
5.4
2 (0)
4.9
0
0 (4.8)
0
4.8 (0)
0
4.8
0
4.9
4.9
4.9
4.9
4.9
5.4
∗
4.8
4.9
0
1.5 (5.1) <1.5>
4.8
<0> {4.8}
0
<0> {4.8}
0
0
0
4.8
2.4
2.4
2.4
2.4
4.8
4.8
3.2
1.6
2.4
2.4
4.3
(4.3)
<0>
0
0
0
0
4.1
(0)
(0)
<4.1>
0
4.8
<0> {0.7}
<4.3>
{0.2}
4.8
4.9
J306 0
(EXCEPT AEP, UK, CH)
(EXCEPT AEP, UK, CH)
R374 47K
A0
A1
A2
A3
VCC
TEST
SCL
SDA
IC302
IN
GND
OUT
RPM7138-V4
X302
REMOTE CONTROL
RECEIVER
IC304
RESET SIGNAL
GENERATOR
GND
SUPPLY
OUT
QUAL
RDAT
VREF
MUX
VDD1
VSS1
VSS3
CMP
RCLK
NC
XO
XI
VDD2
VSS2
T1
T2
IC305
RDS DECODER
BUFFER
(AEP, UK)
ROTARY
ENCODER
VOLUME
SWITCHING
Q306
RESET
SWITCH
50V
0
100U10V
33p
10V
50V
0
SEL2215S-CD
TIMER
MUSIC MENU
TUNING +
TUNING −
DISPLAY
TUNER MEM/ENTER
PLAY MODE
RDS/DIR
PLAY MODE
DIR
SW305
SW305
CD
TUNER MEM/ENTER
TAPE
TUNER/BAND
SEL2910D SEL2910D SEL2910D
D901 − 903
LCD BACK LIGHT
MEGA BASS
2
3
4
5
6
7
8
9
10
11
13 12
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
1
CN301
LIQUID CRYSTAL DISPLAY
Q307
536N
536N
D304
1N4148
R375
47K
IC301
SYSTEM CONTROLLER,
LIQUID CRYSTAL
DISPLAY DRIVER
DISPLAY DRIVER
µPD780306GC-A68-8EU
6.3V
SEL2215S-CD
LED
0
DISPLAY BOARD
A
MAIN BOARD
CN305
F
MAIN BOARD
CN305
B
MAIN BOARD
CN303
D
MAIN BOARD
CN302
C
MAIN BOARD
CN307
PUSH
OPEN/CLOSE
SW300
LED DRIVE
50V
10V
PRESET +
PRESET −
(US, CND, E51, MX, AR)
(HK)
(AEP, UK, HK, CH)
(AEP, UK, CH)
(AEP, UK, HK, CH)
(HK)
(EXCEPT US, CND)
(US, CND, E51, MX, AR)
(AEP, UK, CH)
(EXCEPT AEP, UK, CH)
(AEP, UK, CH)
(AEP, UK, CH)
11
1
11
1
9
G
MAIN BOARD
CN303
(EXCEPT AEP, UK, CH)
( AEP, UK, CH)
( AEP, UK, CH)
1
3
1
7
I
MAIN BOARD
CN302
H
MAIN BOARD
CN307
Q308
608N
608N
Q307, 308
AM FREQUENCY STEP
SELECT SWITCH
6-15. SCHEMATIC DIAGRAM – DISPLAY Section –
•
See page 19 for Waveforms.
•
See page 33 for IC Block Diagram.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : TUNER
(
no mark : TUNER
(
) : CD PLAY
<
> : TAPE PLAY
∗
: Impossible to measure
(Page 21)
(Page
22)
(Page
22)
Ver 1.1
(Page
26)
(Page
26)
(Page 25)
(Page 21)
(Page 25)
HCD-EP505
30
30
6-16. PRINTED WIRING BOARD – POWER Section –
(AEP, UK, CH)
EXCEPT
AEP, UK, CH
J
MAIN
BOARD
R225
+
+
+
+
+
POWER BOARD
+
E C B
E C B
POWER
TRANSFORMER
(SUB)
AC IN
T201
POWER
TRANSFORMER
(MAIN)
4
3
2
2
1
1
2
3
4
A
B
C
D
1
2
3
4
5
1
7
E
MAIN
BOARD
(US, CND, MX)
(US, CND, MX)
(EXCEPT US, CND, MX)
(US, CND, MX)
• Semiconductor
Location
Ref. No.
Location
D201
B-5
D202
A-5
D203
B-5
D204
B-5
D205
C-5
D206
C-5
D207
C-5
D208
C-5
D212
A-3
D213
A-3
D215
A-3
D216
B-3
D217
A-3
D218
B-3
D221
B-3
Q205
C-3
Q206
C-3
Z201
C-4
(Page 20)
Ver 1.1
(Page 24)
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