DOWNLOAD Sony DAV-EA20 / HCD-EA20 Service Manual ↓ Size: 9.72 MB | Pages: 101 in PDF or view online for FREE

Model
DAV-EA20 HCD-EA20
Pages
101
Size
9.72 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
dav-ea20-hcd-ea20.pdf
Date
PREV: Sony DAV-EA20 Service Manual

Sony DAV-EA20 / HCD-EA20 Service Manual ▷ View online

33
33
HCD-EA20
– POWER SUPPLY SECTION –
(AC IN)
13V
+VCC
-VCC
TO
POWER
AMP
Q901
RELAY DRIVE
Q681
RESET SWITCH
D952
RECT
D951
RECT
IC951
+13V
REGULATOR
IC654
+10V
REGULATOR
IC952
+6.8V
REGULATOR
M12V
10V
Q501, 502
B+ SWITCH
VDD
(KEY, ENC CIRCUIT)
IC953
+3.3V
REGULATOR
+6.8V
IC653
+3.9V
REGULATOR
IC907
+3.3V
REGULATOR
D5V
+3.9V
A3V-2
(ZIVA)
IC652
+5V
REGULATOR
V5V
F1
F2
VFL
IC392
+3.3V
REGULATOR
AUDIO D3.3V
IC651
+5V
REGULATOR
A5V
TO FLUORESCENT
INDICATOR TUBE
DC/DC
CONVERTER
T801
Q601, 602
B+ SWITCH
DVD 3.3V
IC211
+1.8V
REGULATOR
IC911
+4V
REGULATOR
E3.9V
VDD
C681
0.22F
VDD
+1.8V
IC681
RESET SIGNAL
GENERATOR
T902
MAIN
TRANSFORMER
T901
SUB
TRANSFORMER
D911-914
RECT
RECT
D806 – 809
OSC
Q803, 804
16
RESET
2
SUBTRANS-MONITOR
23
AC_CUT
1
UNREG MONITOR
9
AC ON/OFF
IC501 (3/3)
SYSTEM CONTROLLER
LOD_POSI
LOD_NEG
OUT1
FIN
OUT2
RIN
IC671
LOADING MOTOR DRIVE
(LOADING)
M
7
9
4
2
19
24
OUT SW
IN SW
26
OUT
IN
25
S001
(DISC IN/OUT)
D651, 652
D915
D684
D683
RY901
34
34
HCD-EA20
6-3. PRINTED WIRING BOARD  – RF SECTION –   • See page 27 for Circuit Boards Location. • 
 : Uses unleaded solder.
Ref. No.
Location
D001
C-11
D002
B-11
IC001
D-11
Q001
C-3
Q002
B-3
• Semiconductor
Location
(SIDE A)
RF BOARD
(SIDE B)
RF BOARD
IC001
TO
DMB03 BOARD
CN501
D
E
E
OPTICAL PICK-UP
BLOCK
(DBU-1)
1-684-822-
11
(11)
1-684-822-
11
(11)
1
16
17
32
48
33
64
49
1
2
3
4
5
6
7
8
9
10
11
12
13
A
B
C
D
E
F
(Page 37)
Ver 1.2
35
35
HCD-EA20
6-4. SCHEMATIC DIAGRAM  – RF SECTION –
D
CN501
(2/8)
40
JL005
C011
R033
C036
R034
C039
C038
C037
C040
R021
JL007
C003
R010
R008
R007
IOP1
L002
C004
D002
R006
C001
C010
R004
R003
IOP2
L001
C002
D001
R022
R025
R023
C016
C015
C014
R014
R013
R012
R011
R018
R017
R016
R015
C042
C020
C021
C022
C023
R024
R026
C027
C028
C029
C018
C017
C019
C024
C031
C033
C012
C005
R032
JL003
JL006
R029
R028
R027
JL002
JL001
C032
C034
C049
C009
C035
IC001
CN003
CN001
CN002
C025
C006
C013
R005
R009
R035
R019
R020
C041
R001
Q001
Q002
C008
R041
JL004
C030
C026
1000p
0
0.47
10M
0.033
0.033
330p
0.1
0
100
6.3V
470
33
33
10
16V
1SS355TE
-17
470
100
6.3V
1000p
33
33
10
16V
1SS355TE
-17
220
100
820
2200p
2200p
2200p
0
0
0
0
0
0
0
0
180p
22p
22p
22p
22p
0
12k
0.1
0.1
0.01
5600p
2200p
5600p
0.01
1000p
0.1
0.1
22
10V
100
0
0
0
0.047
0.1
0.1
0.1
0.1
CXD1881AR
9P
24P
29P
0.1
22
10V
0.1
47k
47k
0
0
0
0.1
100
2SB1132-T100-QR
2SB1132-T100-QR
0.1
1k
0.01
0.1
(DBU-1)
Ver 1.2
36
36
HCD-EA20
6-5. PRINTED WIRING BOARD  – LOADING SECTION –   • See page 27 for Circuit Boards Location.
• 
 : Uses unleaded solder.
6-6. SCHEMATIC DIAGRAM  – LOADING SECTION –
(DISC IN/OUT)
(LOADING)
TO
UCOM
BOARD
CN654
(Page 47)
M
MS-128
S001
JL001
JL002
JL003
JL004
JL005
CN001
5P
CN654
(Page 48)
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