DOWNLOAD Sony HMD-A420 Service Manual ↓ Size: 1.09 MB | Pages: 44 in PDF or view online for FREE

Model
HMD-A420
Pages
44
Size
1.09 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
hmd-a420.pdf
Date
PREV: Sony HMD-A200 (serv.man2) Service Manual

Sony HMD-A420 Service Manual ▷ View online

Schematic diagram
Ò
Ò
Ò
Ò
Ò
 board
1
A
B
C
D
E
F
G
H
I
2
12
13
11
10
9
8
7
6
5
4
3
14
5-11
5-12
(3) Schematic Diagrams of D (
a
a
a
a
a
, 
b
b
b
b
b
, 
c
c
c
c
c
, 
d
d
d
d
d
, 
e
e
e
e
e
, 
f
f
f
f
f
) Board
•
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
3.2 Vp-p (H)
1
3.4 Vp-p (H)
2
4.0 Vp-p (V)
3
5.0 Vp-p (H)
4
2.8 Vp-p (24MHz)
5
5.0 Vp-p (H)
6
5.0 Vp-p (V)
7
3.0 Vp-p (V)
8
2.0 Vp-p (V)
9
12.0 Vp-p (H)
0
• D  - 
a
  BOARD  WAVEFORMS
0.3
0.3
-2.0
-2.0
-1.4
0.7
0.7
-14.3
0.1
15.2
0.8
0.4
0
2.9
2.9
5.7
5.3
2.5
1.5
2.5
6.1
0.2
6.3
5.4
2.4
1.0
2.6
4.5
2.7
3.1
3.2
4.9
5.0
0.2
4.9
5.0
4.9
6
7
8
9
10
0.1
2.8
5.0
5.0
2.0
0
4.9
4.9
0.1
3.1
2.2
2.3
0.1
4.9
5.0
0.7-4.0
4.1
5.0
1.7
0.2
-0.6
4.6
0.7
4.9
0.8
0.5
0.5
5
1
2
3
4
1.2
2.5
4.9
0.5
4.2
0.4
0
0.2
4.6
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
28
27
26
25
24
23
22
29
30
31
32
33
34
35
36
37
38
39
40
41
42
1
2
3
4
5
6
7
8
9
10
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
+
-
CN901
R933
R932
C503
C505
R503
R501
R506
C508
D501
R571
R500
R513
R522
R510
R511
R934
R407
C406
C405
R404
R406
C408
D402
C402
C404
R403
R402
C409
R401
CN505
2P
C512
C513
R508
C509
R505
R502
C510
IC501
IC902
R411
R412
IC901
IC401
C403
R504
IC504(1/2)
10P
22
22
63V
C502
0.1
0.1
100V
C504
0.01
0.1
4.7k
27k
10k
100p
50V
1SS119
4.7k
43
100
R592
47k
4.7k
100
100
47
330
1W
3300p
100V
0.22
50V
0.75
2W
1.5
470
35V
1N4002
470
25V
100V
100V
1000
25V
2.2
1/2W
1.82k
1%
1000p
2.05k
220p
50V
220p
50V
13k
3300p
C531
0.01
100V
2.8k
1%
22.1k 1%
1000
16V
C534
0.1
50V
TDA4841
DEFLECTION
CONTROL
24LC16
EEPROM
6.81k
1%
6.81k
1%
ST72754
CPU
TDA8172
V OUT
0.022
100V
C506
0.01
100V
C507
4700p
732
1%
LM358
AMP
-12V
-12V
2
3
1
8
4
1
2
3
4
5
6
7
PC0/
HSYNCDIV
PC1/VA
PC2/PWM2
PC3/PWM3
PC4/PWM4
PS5/PWM5
PS6/PWM6
PC7/PWM7
PB7/AIN3/
PWM1
PB6/AIN2/
PWM0
PB5/AIN1
PB4/AIN0
VDD
USBVCC
USBDM
USBDP
VSS
HSYNCI
VSYNCI
PD0/
VSYNCO
PD1/
HSYNCO
PA0/OCMP
TEST/Vpp
Reset
PA1/RDI
PA2/TDO
PA3
PA4
PA5
PA6
OSCIN
OSCOUT
PA7/
BLANKOUT
PB3/SDAI
PB2/SCU
PB1/SDAD
PB0/SCLD
PD6/CLAMPOUT
PD5/HFBACK
PD4/ITB
PD3/ITA/
VFBACK
PD2/
CSYNCI
SCL/I
SDA/I
CLAMP
GND
G1
V_RTN
H_RTN
GND
SOG
Auto-Size(NC)
Vcc
TEST
SCL
SDA
Vss
HPLL2
HSMOD
FOCUS
BOP
XRAY
HFLB
VCAP
GNDS
HPLL1
HBUF
DGND
HDRV
PGND
HREF
BIN
BSENS
COR
VSOMD
VAGC
VOUT1
VOUT2
EWDRV
VREF
VCC
HUNLOCK
SCL
CLBL
HSYNC
SDA
VSYNC
A0
A1
A2
Q541
Q542
R5120
46.4k
C580    
0.1
100V
R5124
100
R5121
10K
C570
10
50V
R5122
56.2k
C571
0.1
50V
R5123
10k
HCAP
BDRV
ab2
D
-a
+5V
+5V
+5V
+5V
+5V
+12V
+17V
+12V
(µ-COM,DEFLECTION CONTROL)
TO A BOARD
2SB647
2SD667
TILT DRIVE
TILT DRIVE
ab3
ae1
COIL
TILT(ROTATION)
ROTATION-
ROTATION+
CN302
TO A BOARD
CN305
TO H BOARD
P701
B-SS3545<AEP>-D..-P1-EPS05
R951
4.7k
+5V
+5V
+5V
R940
10k
R953
10k
R507
10k
R596
150k
1
2
3
4
5
6
7
CN902
7P
H-IN
GND
V-IN
PCDET
1
2
3
4
CN903
4P
MENU
ORANGE/LED
GREEN/LED
GND
TO D-f BOARD
P7000
1
2
3
CN904
3P
USB DM
USB DP
GND
SDA
SCL
PC+5V(NC)
C920
0.1
R943
1k
R919
4.7k
R920
10k
C915
100p
D902
MTZJ5.1A
Q902
H2N3904
H SYNC BUFF
R922
10k
Q901
H2N3904
C SYNC BUFF
R923
10k
R921
1k
+5V
R924
1k
R946
100
R952
47
R947
47
C926
100p
C927
100p
R902 1k
C902
2.2
R903 1k
C903
2.2
R904 100
C904
2.2
R905 1k
R906 1k
R909 1k
R908 10k
R914
33.2
R948
1.4k
C905
2.2
TILT
BLK
TEST
CS4
ABL/PWM
BRI
H-CENTER/O
TILT
C572
47
16V
C579
3300p
100V
R5125
430
C581
0.22 50V
1
2
C906
2.2
R935
10k
+5V
R915
30.1k
TEST
GREEN/LED
ORANGE/LED
HSYNC/O
VSYNC/O
MENU
H-DRIVER
HSYNC/O
VSYNC/O
R912 10k
R916
1.5k
R911 1k
R949
51k
C924
4.7
C925
0.1
R950
510k
C909
470p
C907
10
C908
0.1
2µH
FB901
0.45µH
FB902
C910
0.1
C911
0.1
C913
22p
C912
22p
C914
100p
MENU
ORANGE/LED
GREEN/LED
FOCUS
HFLB
BOP
HUNLOCK
G1/VBLK
HDRV
BLANK OUT
BDRV
L509
150µH
R529
1k
Q526
RN1203
BUFF
C918
47p
C919
47p
R931
10k
R930
10k
R929
10k
R928
10k
D904
HZ5C1
D903
HZ5C1
D906
HZ5C1
D901
HZ5C1
D905
HZ5C1
R913
1k
R942
47
R941
47
ad1
ac1
ab1
ad2
R939
10k
R938
10k
R954
4.7k
IC903
M51951B
RESET
GND
OUT IN
3
2
1
C923
2.2
R936
X901
C922
C921
1M
24MHz
22p 50V
22p 50V
R937 47
R926
100
R918
10k
R925
10k
D908
1SS119
ab4
R944
470
H_RETURN
Audio_Mute
ABL/O
C563
330
16V
C930
220p
R907
1k
R900
15k
TH602
10k
C900
0.1
C928
0.1
C928
0.1
D910
1N4148
D911
1N4148
C5001
33p
C5000
33p
0.45µH
FB903
SCL
SDA
PMG0
D
Schematic diagram
-
a
 board
l
l
l
l
l
A
5-13
5-14
1
A
B
C
D
E
F
G
H
I
2
12
13
11
10
9
8
7
6
5
4
3
•
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
58.0 Vp-p (V)
qa
1.8 Vp-p (V)
qs
1k Vp-p (H)
qd
62.0 Vp-p (H)
qf
12.0 Vp-p (H)
qg
120 Vp-p (H)
qh
• D  - 
b
  BOARD  WAVEFORMS
6.0
6.1
5.3
5.4
92.7
157.5
15
3.3
2.9
56.4
4.2
16
58.9
57.8
3.1
-0.4
92.8
2.5
1.2
95.6
0.6
95.7
96.2
102.9
-77.3
0
43.9
0
44.6
0.6
0.6
74.8
1.0
0.4
0.5
16.4
15.8
16.4
16.4
1.9
1.4
-27.6
14
13
12
11
S
S
1
2
3
4
10
9
8
7
5
6
D502
C556
R524
C515
L503
10mH
R525
R526
R580
D504
D506
R531
C555
R582
R587
R530
R583
R532
R527
D518
C541
R518
C538
D503
FB501
T502
5
4
3
2
10
9
8
7
1
6
T503
Q501
R540
Q515
Q516
Q520
Q521
Q523
Q527
Q503
Q511
Q513
C523
Q502
MTZJ15A
100
250V
8.2k
0.022
250V
120
4.7k
100
100V
C542
0.022
1SS119
1SS119
4.7k
0.1
50V
2.7k
1.3
3W
1.3
3W
47
1/2W
10k
R528
120
1/2W
D517
1SS119
1SS119
R568
10k
R562
47k
D539
1N4148
D538
HZ18-2
R567
10k
10
16V
510k
R560
150k
R517
10k
0.1
100V
31DF4
D535
1N4148
3µH
SFS9634
SWITCHING
1M
1/2W
2SC945
B DRIVE
2SA733
B DRIVE
2SC945
H DRIVE
2SA733
H DRIVE
2SD1640Q
H DRIVE
2SC945
H DRIVE
2SC5573
H OUT
H2N6718L
SW
2SA733
BOP CONT
Q512
2SC945
BOP CONT
Q510
2SA733
BOP CONT
D507
SB140
470
25V
IRFU110
H DRIVE OUT
ab2
ab1
ab3
bc1
+200V
V DY+
V DY-
+12V
D
-b
(DEFLECTION)
+12V
+12V
B-SS3545<AEP>-D..-P2-EPS05
FB504
3µH
ab4
bc2
HDRV
HFLB
BDRV
BOP
HUNLOCK
BLANK OUT
C543
1000p
100V
+17V
D510
1SS119
H-DRIVER
BLK
BRI
+5V
D519
(SR1003)
PS104R
1.3k
1W
R533
C518
1500p
1kV
C517
200p
3kV
D511
D512
C549
R535
C548
R536
C547
R557
R534
L506
R565
C550
Q517
Q518
Q519
220
25V
1k
220
25V
6.8k
R564
220k
0.056
250V
2.7
2W
2.7
2W
R5128
10
1/2W
R5127
10
1/2W
10mH
1k
0.01
250V
2SD669A
H CENT DRIVE
2SB649A
H CENT DRIVE
2SC2688
H CENT
PS104R
PS104R
H-CENTER/O
ABL/PWM
FB508
1.1µH
FB507
1.1µH
CN501
6
V DY+
V DY-
H DY-
H DY-
H DY+
H DY+
5
4
3
2
1
6P
V.DY
H.DY
V DY+
V DY-
R543
L505
270
1W
C521
4300p
1.8kV
D508
DD84RC
L504
RY501
14µH
4.5µH
2
5
1
3
4
D514
PG104R
R5116
100k
1/2W
D524
1SS119
RELAY DRIVE
Q540
2SC945
R5117
100
R595
4.7k
D526
1SS119
C565
4.7
160V
R597
27
1W
R544
100k
1/2W
L501
1.2mH
C524
0.1
250V
S
Q524
IRF640
S-CAP CHANGE
R538
R539
Q505
C560
4.7k
10k
2SC945
S-CAP
CHANGE
0.1
C557
0.1
+12V
R5115
100k
1/2W
C525
0.12
250V
S
Q536
IRF640
S-CAP CHANGE
R5119
R5118
Q537
4.7k
10k
2SC945
S-CAP
CHANGE
+12V
R545
100k
R546
100k
1/2W
C526
0.39
250V
C522
0.27
400V
C527
0.2
250V
C566
1.6
250V
S
Q506
IRF640
Q507
IRF640
Q509
2SC945
S-CAP CHANGE
R547
R549
Q508
C528
4.7k
10k
R558
10k
CS4
1/2W
R548
4.7k
2SC945
S-CAP
CHANGE
0.1
+12V
+12V
S
C529
0.1
CN502
CS2
CS3
CS0
CS1
1
2
3
4
4P
D525
HZ6C3
SG501
C592
R573
R572
R575
C593
R577
T504
Q530
1.2KV
4.7
35V
36k
R576
56k
C595
0.1
400V
10
3.3k
R5131
820k
0.22
C585
1000p
500V
68
2SC2688
DF AMP
DF AMP
2
5
7
11
+12V
R574
82k
+12V
+12V
C583
33
100V
+12V
R5130
10k
Q504
2SC945
R5129
1k
R5134
D520
1N4148
(BAS32L)
R5104
3k
2W
D530
1N4148
D513
BYV26C
D534
1N4148
D531
1N4148
+80VF
C573
0.1
bc5
bc4
bc3
bd1
bc6
G1/VBLK
FOCUS
R409
10k
Q401
2SC945
SW
C401
0.1
250V
C575
0.01
R408
1k
1/2W
R523
10k
R516
4.3k
R509
3.6k
R512
1k
C514
0.1
C576
0.1
D527
HZ12A1
Q535
RN1203
Q532
2SA733
D523
1SS119
C574
330
R585
5.1k
R5102
120k
R5103
10k
Q531
KSP92
R5113
56k
R5111
20k
Q528
2SC945P
ABL CONT
Q529
2SC945P
ABL CONT
R5110
470
R5108
18k
R5112
6.8k
C589
NC
R5109
1M
R5114
NC
R5107
10k
D592
1SS119
C590
0.1
Q533
2SA733
R5106
470
C591
0.1
L502
100µH
R586
107k
R589
10k
R590
1M
D532
Z10-160B
C577
220
250V
D522
PG104R
R566
10k
R537
JW(10)
TO A BOARD
CN304
R5009
15
2W
Q543
2SC3421
Q547
2SC945
Q548
2SA733
Q514
2SC2362
Q549
RN1203
Q544
R5010
5.6k
R578
180
C584
270p
R5126
200
2SA1358
5-15
1
A
B
C
D
E
F
G
H
I
2
12
13
11
10
9
8
7
6
5
4
3
14
5-16
•
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
HV
9
10
3
6
1
11
14
VF1
VF2
4
15
16
13
T501
FBT
+81V
D
-c
(HV)
B-SS3545<AEP>-D..-P3-EPS05
+12V
7
8
12
bc4
bc5
bc3
bc6
R594
120K
1.2kV
CN504
1P
1
TO A BOARD
CN309
D528
RGP02-18
VR501
100k
R515
78.7k
R5100
100k
HV ADJ
C567
0.01
2kV
TO
PICTURE TUBE
0.1
100V
C530
C532
0.047
100V
C537
2200p
2kV
FB502
5.2µH
R519
100
2W
R5142
100
2W
C539
10
100V
D521
BYV27
D509
PS104R
D515
BYV26C
D516
1S119
D533
1SS119
C536
1500p
1kV
S
Q522
2SK2843
R520
220
R579
2.2k
R5003
10k
R521
4.75k
R555
120
R5132
JW
R5144
10k
R584
5.6k
R554
15
1
2
3
4
5
6
7
8
IC502
UC3843
PWM CONT
COMP
FB
ISENSE
OSC
VREF
VCC
OUT
GND
C553
470p
C540
0.1
R5133
2.7k
C535
100
bc1
bc2
ac1
R551
7.32k
R558
15k
R556
10k
D537
RGP-02-18E
R552
100k
R598
34.8k
R553
100k
ZD502
MTZJ18C
C545
10
Q534
2SC945
Q539
2SC945
SYNC BUFF
SYNC BUFF
Q538
2SC945
Q525
2SA733
OVP
OVP
D528
RGP-02-18E
C554
680p
C546
56p
C558
0.033
100V
C561
680p
100V
C559
2200p
R581
NC
R561
47k
C562
0.1
R569
680
R593
JW
R570
2.2k
R559
1k
C564
47
25V
(11DQ03)
D536
SB140
1%
R599
4.87k
50V
C599
220
D
Schematic diagram
-
c
 board
l
l
l
l
l
D
Schematic diagram
Ò
Ò
Ò
Ò
Ò
-
b
 board
5-17
5-18
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
0.1
16.5
4.9
2.6
5.9
4.9
0.1
15.9
5.3
2.5
5.3
5.0
1.7
124.4
7.0
0.1
3.4
2.5
0.4
1.1
5.0
7.1
2.1
2.6
0.1
0.1
18.7
1
2
3
4
5
6
7
8
1
2
3
1
2
3
S
L
G
N
1
2
3
4
5
6
7
4
1
2
3
1
2
3
4
5
6
7
8
11
12
9
10
13
14
15
16
17
18
CN602
TH602
R629
D611
R628
C649
C648
C618
C619
FB612
FB613
C601
R601
C602
13mH
LF601
SW601
TH601
C607
C608
D605
T603
D606
D607
R610
R611
R609
FB602
FB617
R615
R614
C611
R616
1%
1%
IC606
D608
Q601
D609
R623
R621
R622
C614
R625
R624
R626
C615
R619
R618
C613
C616
R620
R642
R640
C622
R641
D617
D616
D615
FB608
D628
C630
C628
C625
C626
R651
R652
L604
L603
R656
C634
C612
R665
L602
L607
R666
CN601
RY601
F601
R643
Q615
R655
R630
C604
R605
Q602
FB621
R653
C620
IC601
R627
R612
IC602
IC603
R644
IC607
Q610
Q609
Q608
Q607
D619
FB622
FB605
FB606
FB607
CN603
3P
DGC
NC
DGC
160
1/4W
1SS119
62
1/4W
4700p
400V
4700p
400V
10
50V
0.1
50V
600µH
600µH
0.47
250V
560k
1/2W
0.68
250V
10
C610
4700
250V
C650
630V
0.022
C650
630V
0.33
220
35V
0.1 400V
UF4007
FB614
JW
FB615
JW
1SS119
RD27EB4
10
43
2.7k
1/4W
3µH
JW
1.82k
0.22
2W
R678
1.5M
R670
1M
680p
50V
4.22k
HXL1225-AB
RD27EB4
2SA733
SW
100
220
220
0.1
50V
10k
1.9k
15k
100
16V
10k
10k
270p
50V
C654
22
25V
0.1
50V
1k
AC RECT
D601
D4SB60L-F
160
1/4W
100k
2200p
470
D610
1SS119
D629
1SS119
1SS119
D630
1SS119
PG104G
31DF2
BYM26C
D631
BYM26C
C645
470
16V
JW
FB619
2µH
BYM26C
D613
BYM26C
1000
25V
2200
25V
220
100V
100
250V
NC
100
1W
R669
1
100µH
100µH
10k
1000
16V
0.01
100V
NC
100µH
L605
100µH
100µH
AC-SOCKET
4A
250V
115k
1%
R675
107k
1%
2SC945P
RELAY DRIVE
1.6k
3.9k
470p
250V
75k
2W
2SK2607
SWITCHING
220
2W
100p
1kV
KA3842
PWM CONTROL
2.61k
4.99k
R677
1M
1%
TLP621Y
VOLTAGE
FEED BACK
TL431
VOLTAGE
FEED BACK
2.8k
1%
LM7812
+12V REG
NC
+16V SW CONT
NC
+16V SW
RN1203
+6.3V SW CONT
2SA966
+6.3V SW
1SS119
D632
1N4148
3µH
3µH
7P
-12V
2
1
3
5
4
6
1
2
4
3
COMP
FB
ISENSE
OSC
VAEF
Vcc
OUT
GND
VIDEO+81V
+12V
ABL
AGND
+5V
HEATER
AGND
ad1
+15V
POWER
+81V
+200V
+16V
IN
OUT
GND
D
-d
(POWER SUPPLY)
DGC
TO A BOARD
CN303
B-SS3545<AEP>-D..-P4-EPS05
C646
1000
25V
C603
470p
250V
C640
0.1
250V
L608
D603
1SS119
NC
Q616
NC
-16V
SW CONT
-16V
SW CONT
Q618
2SA733
C623
100p
C652
2200p
500V
R659
NC
ad2
bd1
de1
de2
de4
de3
FB601
A
G
K
4
3
6
1
T601
L606
D621
BYU26C
C606
330
450V
VA603
VA601
UF5406
D623
K
R
A
C638
R648
NC
C639
1000p 1kV
NC
+5V
+5V
Q617
NC
-16V SW
R661
NC
R660
NC
L601
100µH
C651
1000
25V
R647
R645
L609
100µH
3µH
JW
15µH
FB609
JW
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