Sony HMD-A420 Service Manual ▷ View online
5-19
5-20
1
A
B
C
D
E
F
G
H
I
2
12
13
11
10
9
8
7
6
5
4
3
14
•
Divided circuit diagram
One sheet of D board circuit diagram is divided into six
sheets, each having the code D-
a
to D-
f
. For example, the
destination ab1 on the D-
a
sheet is connected to ab1 on the
D-
b
sheet.
b
1
a
Ref. No.
Circuit diagram division code
R5141
10k
R5137
68k
C594
0.1
C588
0.033U
Q545
2SD667
R5140
-15V
R5135
10k
R5138
51k
IC504(2/2)
LM358
C587
0.1
10.3k
R5136
C586
10
+12V
6
5
8
7
4
R5139
100
Q546
2SB647
430
1/4W
C597
0.22
50V
D6000
1SS119
ZD6001
HZ27V-2
R6008
C6000
100
16V
IC6000
TOP223Y
D6002
D6004
NC
L6001
100µH
CHOKE
R6003
Q6000
RN1001
R6006
10k
L6000
5.2µH
C6003
4700
16V
C6004
4700
16V
R6007
100
0.47
50V
C6005
330
R6001
75
IC6001
TL431
R6005
3.16k
1/4W
R6004
3.4k
1/4W
D620
JW
+5V
C6006
220UF
16V
R4001
150
C6002
PH6001
TLP621Y
D6003
PS104R
PS104R
D6001
BYV26C
C6007
2200p
2200p
1kV
FB618
3µH
R6010
13
C6001
47
50V
220
T6000
D6005
F10P06Q
R6002
160
PH6000
TLP621Y
5
4
9
8
7
6
2
2
2
3
3
4A
1
1
0.1uF
50V
N.C
R4112
10k
1/4W
C4006
10
16V
R4114
20k
R4113
56k
1/4W
R4116
15k
1/4W
2SD669A
Q4003
R4119
30R
2W
R4007
82k
1/4W
Q4001
HSD669A
R4009
100
Q4002
2SB649
R4110
30
2W
CN4001
4P
CN506
2P
C4005
0.22
50V
R4008
12.5k
1/4W
R4111
14.2k
1/4W
C4003 100V
0.1
R4118
IC4002
LM358
AMP
Q4004
2SB649
L507
100µH
-15V
-15V
100
1/4W
C4002
47
25V
R4117
5.2k
1/4W
C4007
0.1
100V
C4008
0.1
100V
C4001
10
16V
R4115
25k
1/4W
1
8
8
4
7
6
5
4
2
3
+15V
R4003
10k
R4006
R4005
100k
1/4W
IC4001
M62393P
AMP
20K
1/4Ws
1/4W
+5V
+5V
+5V
D-e
(H.CONV,V.CONV)
B-SS3545<AEP>-D..-P5-EPS05
1
2
3
4
1
2
ae1
de1
de2
de3
de4
PMG0
SDA
SCL
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
IC4000
VrefL
Vrefu1
GND
Vrefu2
AO1
AO2
AO3
AO4
VCC
VDD
CS2
CS1
SCL
SDA
AO5
AO6
AO7
R
CS0
AO8
R6009
27k
D
Schematic diagram
Ò
Ò
Ò
Ò
Ò
-
d
board
D
Schematic diagram
-
e
board
l
l
l
l
l
5-21
5-22
1
A
B
C
D
E
F
G
H
I
2
12
13
11
10
9
8
7
6
5
4
3
14
•
Divided circuit diagram
One sheet of D board circuit diagram is divided into six
sheets, each having the code D-
a
to D-
f
. For example, the
destination ab1 on the D-
a
sheet is connected to ab1 on the
D-
b
sheet.
b
1
a
Ref. No.
Circuit diagram division code
1
2
3
4
8
7
6
5
1
2
3
4
8
7
6
5
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
L7004
JW
L7001
0.45µH
L7002
0.45µH
L7003
1µH
L7005
JW
L7006
JW
R7000
18
R7001
18
R7002
1.5k
C7009 47p
C7012 47p
C7011 47p
C7010 47p
C7013
C7014
C7015
C7016
0.1
50V
330
330
0.1
50V
50V
10V
10V
3.3V
3.3V
L7007
L7008
2.3µH
2.3µH
2.3µH
R7016
15k
L7015
L7016
1µH
1µH
L7031
JW
L7032
JW
L7033
2.3µH
2.3µH
2.3µH
L7020
2.3µH
L7019
L7021 JW
L7022 JW
L7023 JW
L7024 JW
L7025 2.3µH
L7034
2.3µH
R7030 24
R7031 24
R7029
R7028
24
24
P7002
2
1
3
4
L7017
L7018
R7019
1M
R7020
1M
R7022
R7024
5VF
R7027
C7008 3.3
C7023 47p
0.1
330
50V
10V
C7020
C7021
C7022
330
0.1
10V
50V
C7019
C7017 47p
C7018 47p
C7024 47p
3.3k
0
5VF
C7006 22p
C7007 22p
X7000
6MHz
PSW1
DP2
DM2
DP0
DM0
DP1
DM1
DP5
DM5
INDV/SCL
OPTION/SDA
RESET_N
XTAL2
XTAL1
PSW5
PSW4
V3.3
PSW2
GND
DM3
DP3
VCC
OC1_N
OC2_N
OC3_N
OC4_N
OC5_N
DM4
DP4
SP/BP_N
HUBGL_N
PSW3
L7009
L7010
L7011
C7000
220
10V
C7001 220V
R7003 10k
L7035
R7007 10k
R7008 10k
R7009 10k
R7010 10k
C7005
0.1
C7004
0.1
C7003
0.1
C7002
0.1
R7018
1M
R7015
100k
2.3µH
R7004 10k
R7005 10k
R7006 10k
1µH
1µH
5VF
5VF
5VF
5VF
R7011
1k
R7012
1k
R7013
1k
R7014
1k
MIC2526
POWER SWITCH
MIC2526
POWER SWITCH
IC7001
IC7002
ENA
FLGA
FLGB
ENB
OUTA
IN
GND
OUTB
ENA
FLGA
FLGB
ENB
OUTA
IN
GND
OUTB
5VF
L7012
L7013
D7000
L7014
HZ5.1B
2.3µH
5VF
5VF
R7017
15k
IC7000
ISP1122
USB CONT
R7025
100k
5VF
R7026
3.3k
JW
JW
R7034 24
R7032
1/4W
24
R7033
1/4W
24
R7035 24
L7030 2.3µH
L7029
L7027
L7026
2.3µH
L7028
2.3µH
+
+
+
+
+
USB DB_A BLOCK
USB DB_B BLOCK
+
+
P7000
4P
P7003
2
1
3
4
P7004
2
1
3
4
P7001
2
1
3
4
P8D1
7P
B-SS3545<AEP>-D..-P6-EPS05
D-f
(USB CONTROL)
TO D-a BOARD
CN904
1
2
3
4
NC
USB DM
USB DP
GND
P7D1
7P
1
2
3
4
V2
V1
P2
M2
5
6
7
P1
M1
DGND
V2
V1
P2
M2
P1
M1
DGND
1
2
3
4
5
6
7
P8D2
7P
P7D2
7P
1
2
3
4
5
6
7
P3
M3
DGND
V4
V3
M4
P4
P3
M3
DGND
V4
V3
M4
P4
1
2
3
4
5
6
7
5-23
5-24
5-5. SEMICONDUCTORS
D
Schematic diagram
Ò
Ò
Ò
Ò
Ò
-
f
board
BH3863F
BH3863F-E2
BH3863F-E2
1
TOP VIEW
n
24 pin SOP
LA78040
7
1
LM2415T
LM358N
M24C16BN6
UC3842A
UC3843A
24LC21/P
M24C16BN6
UC3842A
UC3843A
24LC21/P
1
TOP VIEW
n
8 pin DIP
MCT7812CT
TA7805S
TA7805S
M35047
1
TOP VIEW
n
20 pin DIP
M51951BSL
M52743BSP
1
TOP VIEW
n
36 pin DIP
PC123F2
1
2
3
4
ST72774
TDA4841
1
TOP VIEW
n
42 pin DIP
1
TOP VIEW
n
32 pin DIP
BF420
E C
B
DTC124ESA
RN1203
2SC3400
RN1203
2SC3400
E
LETTER SIDE
C B
IRFU110
IRFU110A
IRFU110A
S
D
G
IRF640
G
D
S
MCR100-6
GATE
CATHODE
ANODE
2N3904
E B C
2SA1221-L
E C B
2SA733-QP
2SA733TP-QP
2SA966-Y
2SB647A-C
2SC2655
2SC945-P
2SD669AVC
2SA733TP-QP
2SA966-Y
2SB647A-C
2SC2655
2SC945-P
2SD669AVC
E C B
2SB649-C
2SB649
2SC2688-LK
2SB649
2SC2688-LK
LETTER SIDE
E
C B
2SC4632LS-CB7
E C B
2SC2655-Y
B
C
E
CATHODE
ANODE
BYV26C
U05G
U05G
D2L40-TA
ER106
HSS82
HZ12
HZ5C1
HZ5C2
MTZJ-T-73-15A
PS104R
RD27EB4
SB140-6339
UF4007G23
UF5402G
UF5404G
UF5406
10E2
1N4002
1N4004
1N4148
ER106
HSS82
HZ12
HZ5C1
HZ5C2
MTZJ-T-73-15A
PS104R
RD27EB4
SB140-6339
UF4007G23
UF5402G
UF5404G
UF5406
10E2
1N4002
1N4004
1N4148
CATHODE
ANODE
EGP10D
CATHODE
ANODE
CATHODE
ANODE
(RED)
(RED)
ANODE
(GRN)
(GRN)
LT6463-23-D51
MAA3371X
CATHODE
ANODE
MTZJ-15A
MTZJ-5.1A
MTZJ-5.1B
RD15ES-B1
RD5.1ESB2
1SS119-25
1SS119-25TD
MTZJ-5.1A
MTZJ-5.1B
RD15ES-B1
RD5.1ESB2
1SS119-25
1SS119-25TD
SEL4225R-D
TLP621D4-Y-LF2
CATHODE
ANODE
CATHODE
ANODE
1
2
3
4
1
2
3
4
D4SB60L
D4SB60L-F
D4SB60L-F
~
~
- -
--
~
~
-
-
HMD-A420
1
2
4
11
10
5
9
6
7
8
3
• Items marked " * " are not stocked since
they are seldom required for routine
service. Some delay should be anticipated
when ordering these items.
service. Some delay should be anticipated
when ordering these items.
• Items with no part number and no
description are not stocked because they
are seldom required for routine service.
are seldom required for routine service.
• The construction parts of an assembled
part are indicated with a collation number
in the remark column.
in the remark column.
6-1. CHASSIS
7-685-663-71
+BVTP 4X16
7-685-881-01
+BVTT 4X8
7-685-648-71
+BVTP 3X12
SECTION 6
EXPLODED VIEWS
The components identified by mark
¡
are critical for safety.
Replace only with part number specified.
Replace only with part number specified.
Les composants identifiés par une
marque
marque
¡
sont critiques pour la
sécurité. Ne les remplacer que par une
pièce portant le numéro spécifié.
pièce portant le numéro spécifié.
NOTE:
6-1
REF.NO. PART NO.
DESCRIPTION
REMARK
REF.NO. PART NO.
DESCRIPTION
REMARK
1
* A-1272-267-A A BOARD, COMPLETE
2
* 4-060-151-01 STOPPER, CABLE
2017095Y11
3
X-4038-554-1 BUCKET ASSY
4
4-080-736-01 HOLDER, CABLE
1Q500H9R6E
5
* 4-060-150-01 BRACKET, CABLE
2003097R51
6
X-4038-555-1 COVER ASSY, BOTTOM
7
4-080-740-01 FOOT, RUBBER
8
0
1-453-362-11 TRANSFORMER ASSY, FLYBACK
7050309R00
9
* A-1333-032-A D BOARD, COMPLETE
10
* 4-080-068-01 LABEL, INFORMATION
11
0
1-757-540-11 CABLE, I/O
C7107C2U11
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