Sony CMT-EP505 / HCD-EP505 Service Manual ▷ View online
HCD-EP505
17
17
6-3.
BLOCK DIAGRAM – MAIN Section –
: RECORD
: TAPE PLAY
: CD PLAY
: TUNER
EEPROMDATA
INPINENA
SYSTEM CONTROLLER
IC301 (2/3)
EEPROM
IC302
CDDATA
CDCLK
CDRESET
L3
L4
F
(Page 16)
RL-CH
TL-CH
RR-CH
TR-CH
DI
CE
X2
X1
X301
4.194304MHz
80
75
EEPROMCLK 77
79
CD DOOR SW 91
17
MUTE 21
15
CL
14
LT
4
5
16
12
3
14
88
15
SOUNDENA
DATAOUT
CLK
19
73
74
DATAIN
72
PLLENA
20
SDA
5
SCL
6
10
9
L2
L1
LTOUT
2
11
B
(Page 15)
L
R
1
LVROUT
LVRIN
30
RVROUT
R-CH
R-CH
R-CH
CD-L-IN
CD-R-IN
CD BLOCK
INPUT SELECT SWITCH,
ELECTRICAL VOLUME
U501
(AEP, UK, CH) (EXCEPT AEP, UK, CH)
R-CH
SOUND
CONTROL
CIRCUIT
R-CH
R-CH
MEGA BASS
CONTROL SWITCH
Q504
R-CH
PHONES
CN503
CD DO
CD CLK
CD \RESET
+
+
–
–
INPUT SELECT
SWITCH
SELECT SWITCH
SWITCH
LTCOM
4
LT
3
6
LT
2
7
LT
1
8
+9V
R-CH
R-CH
E
(Page 15)
TU-R
TU-L
DA IN
CLOCK
DA OUT
STEREO
76
STEREO
STATION
6
STATION
PLL CE
R-CH
D506
D505
D507
H501
Z
PUSH
OPEN/CLOSE
SW300
HEADPHONE
AMP
U503
(AEP, UK, CH) (EXCEPT AEP, UK, CH)
MUTING
Q501
MUTING
Q505
SPEAKER
IMPEDANCE
USE 8Ω
POWER AMP
U502
(AEP, UK, CH) (EXCEPT AEP, UK, CH)
• R-ch is omitted due to same as L-ch.
• SIGNAL PATH
Ver 1.1
HCD-EP505
18
18
6-4.
BLOCK DIAGRAM – DISPLAY/POWER SUPPLY Section –
SYSTEM CONTROLLER,
LIQUID CRYSTAL DISPLAY DRIVER
IC301 (3/3)
POWER ON/OFF
RELAY DRIVE
Q205, 206
POWER
TRANSFORMER
(MAIN)
T201
LINE
FILTER
L201
AC IN
POWER
TRANSFORMER
(SUB)
T202
RE201
B+ AMP
POWER AMP B+
D801
D802
CD-EN
TU-EN
D804
RESET 84
PWRFAIL 86
D901 – 903
(LCD BACK LIGHT)
REMOTE CONTROL
RECEIVER
X302
85 REMOTEIN
FM ON/OFF
CD-EN, TU-EN
ROTARY
ENCODER
X303
ENCODERA
97
ENCODERB
98
SEG30
62
SEG31
63
SEG32
64
SEG29
61
SEG28
60
100, 1 – 4
COM0 – COM3
KEY1 – KEY5
23 – 26
SEG0 – SEG27
32 – 59
SW301 – 317
X303
VOLUME
LIQUID CRYSTAL
DISPLAY
CN301
RECT
D206, 208
RECT
D212, 213,
D216, 218
RECT
D202, 204
+8V
REGULATOR
Q802, 803
8V (CD)
CD BLOCK B+
9V
TAPE DECK SECTION B+
+5V
M12V
CAPSTAN/REEL MOTOR B+
VT12V
FM CIRCUIT B+
5V (CPU)
SYSTEM CONTROLLER,
EEPROM B+
REGULATOR
CONTROL SWITCH
Q804
+12V
REGULATOR
Q808
+5V
REGULATOR
Q801
+12V
REGULATOR
Q805
+9V
REGULATOR
U801
(AEP, UK, CH)
(EXCEPT AEP, UK, CH)
FM/AM PLL B+
FM/AM PLL B+
FM/AM PLL,
RDS DECODER B+
RESET SIGNAL
GENERATOR
IC304
RDSCLK 87
RDSDATA
7
POWER
RDATA
RCLK
22
RESET
SWITCH
Q306
D303
D302
D301
A
(Page
15)
I
(Page 16)
G
(Page 16)
D
(Page 15)
SWITCHING
BUFFER
Q302
SWITCHING
Q301
B+ SWITCH
Q401, 402
B+ SWITCH
Q406
B+ SWITCH
Q406, 407
+5V REGULATOR
Q405
(AEP, UK)
(AEP, UK, CH)
(AEP, UK, CH)
(EXCEPT AEP, UK, CH)
(CH)
(AEP, UK)
(AEP, UK, CH)
D304
SW501
AM FREQ
STEP
10kHz 9kHz
(EXCEPT AEP, UK, CH, HK)
(EXCEPT AEP, UK, CH, HK)
(AEP
, UK, CH)
(HK)
(AEP, UK, HK, CH)
(EXCEPT US, CND)
(EXCEPT AEP, UK, CH)
AM FREQUENCY
STEP SELECT
SWITCH
Q307
AM FREQUENCY
STEP SELECT
SWITCH
Q308
Ver 1.1
HCD-EP505
19
19
Note:
Les composants identifiés par
une marque
Les composants identifiés par
une marque
0
sont critiques
pour la sécurité.
Ne les remplacer que par une
pièce por tant le numéro
spécifié.
Ne les remplacer que par une
pièce por tant le numéro
spécifié.
6-5.
NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
Note on Schematic Diagram:
• All capacitors are in
• All capacitors are in
µ
F unless otherwise noted. pF:
µµ
F
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
f
: internal component.
•
C
: panel designation.
•
A
: B+ Line.
•
B
: B– Line.
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F
: FM
f
: AM
E
: TAPE PLAY
a
: RECORD
J
: CD PLAY
• Abbreviation
AR
: Argentina model
CH
: Chinese model
CND
: Canadian model
E51
: Chilean and Peruvian models
HK
: Hong Kong model
Note on Printed Wiring Boards:
•
•
X
: parts extracted from the component side.
•
W
: indicates side identified with part number.
•
f
: internal component.
•
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
12.4 Vp-p
17.8
µ
s
3.0 Vp-p
140 ns
•
Waveforms
– MAIN Board (AEP, UK, CH models) –
1
U403
w;
(XOUT) (TUNER mode)
2
Q615 (Collector) (REC mode)
5.1 Vp-p
240 ns
– DISPLAY Board –
3
IC301
ul
(X1)
1.8 Vp-p
230 ns
4
IC305
qf
(XO) (AEP, UK model)
Ver 1.1
Note:
The components identified
by mark
The components identified
by mark
0
or dotted line
with mark
0
are critical for
safety.
Replace only with part
number specified.
Replace only with part
number specified.
12.4 Vp-p
17.8
µ
s
4.0 Vp-p
140 ns
– MAIN Board (Except AEP, UK, CH models) –
wa
U402
ws
(XOUT) (TUNER mode)
ws
Q615 (Collector) (REC mode)
HCD-EP505
20
20
6-6.
PRINTED WIRING BOARDS – MAIN Section (AEP, UK, CH models) –
U601
U801
U501
U602
J98
U402
U603
U403
U502
U503
TP
(AM VT)
5
6
4
1
2
3
5
4
1
2
3
4
5
3
2
1
AM OSC
AM ANT
TP
(FM ANT)
1
8
TP
(FM VT)
FM TUNER
PACK
4
5
3
2
1
4
5
3
2
1
FM DET
AM IF
E
C
B
C
B
MAIN BOARD
B
C
E
C
E
B
C
E
C
E
B
C
E
C
E
E
C
B
C
B
B
C
E
B
C
E
C
E
B
C
E
C
E
B
C
E
B
C
E
C
E
B
C
E
C
E
B
C
E
C
E
E
B
C
E
C
B
E
C
B
C
B
B
C
E
B
C
E
C
E
1
3
2
B
C
E
B
C
E
C
E
1
3
E
C
B
E
C
B
E
C
B
C
B
E
C
B
C
B
E
C
B
C
B
E
C
B
B
C
E
C
E
B
C
E
C
E
B
C
E
C
E
B
C
E
B
C
E
E
C
B
C
B
E
C
B
E
C
B
C
B
E
B
E
B
C
E
C
E
B
C
E
B
C
E
B
C
E
C
E
C
B
E
E
B
C
B
C
E
E
C
B
A
K
A
CN401
FM ANT
75Ω
COAXIAL
2
1
1
2
AM
ANT
CN402
–
+
–
+
L
R
SPEAKER
(IMPEDANCE USE 8Ω)
CN503
E
POWER
BOARD
CN505
B
DISPLAY
BOARD
D605
D
DISPLAY
BOARD
TAPE
MECHANISM
BLOCK
∗
CD
BLOCK
∗
SUPPLIED AS THE
ASSEMBLED BLOCK
C
DISPLAY
BOARD
A
DISPLAY
BOARD
1
2
3
6
5
4
BIAS
OSC
HPRE101
REC/PB/ERACE
HEAD
(AEP, UK)
HEADPHONE
BOARD
1
2
3
4
6
7
8
9
H501
PHONES
5
1
5
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
D401
F-4
D402
F-3
D403
F-4
D404
F-4
D405
F-7
D501
I-11
D502
J-6
D503
I-6
D505
K-10
D506
L-9
D507
L-7
D508
G-5
D601
E-16
D603
G-15
D604
G-14
D605
N-12
D801
N-11
D802
L-11
D803
O-5
D804
O-5
D806
L-10
D808
O-10
D904
K-5
D905
J-5
Q401
G-4
Q402
C-4
Q403
E-7
Q404
C-10
Q405
B-11
Q406
B-10
Q501
H-5
Q502
I-5
Q503
I-6
Q504
J-6
Q505
L-9
Q506
L-8
Q601
D-12
Q602
E-15
Q603
D-13
Q604
D-15
Q605
C-13
Q606
D-15
Q607
F-13
Q608
F-14
Q609
F-13
Q610
F-12
Q611
G-8
Q612
G-9
Q613
I-13
Q614
I-13
Q615
C-15
Q616
F-15
Q617
G-15
Q618
G-15
Q619
F-13
Q620
M-13
Q621
M-13
Q622
N-13
Q624
N-13
Q625
H-14
Q801
N-7
Q802
M-10
Q803
M-10
Q804
L-9
Q805
N-8
Q808
O-5
U402
E-9
U403
C-7
U501
I-8
U502
L-6
U503
H-4
U601
C-14
U602
E-14
U603
G-13
U801
N-9
Z801
N-7
Z802
M-9
Z803
O-8
Z804
O-7
Ref. No.
Location
Ref. No.
Location
• Semiconductor Location
(Page 30)
(Page 28)
(Page 28)
(Page 28)
(Page 28)
Ver 1.1
Click on the first or last page to see other CMT-EP505 / HCD-EP505 service manuals if exist.