Sony HMD-A240 Service Manual ▷ View online
— 14 —
HMD-A240
4-2. PRINTED WIRING BOARD AND
SCHEMATIC DIAGRAM INFORMATION
All capacitors are in µF unless otherwise noted. pF : µµF 50WV or less
are not indicated except for electrolytics and tantalums.
All electrolytics are in 50V unless otherwise speciÞ ed.
All resistors are in ohms. k
are not indicated except for electrolytics and tantalums.
All electrolytics are in 50V unless otherwise speciÞ ed.
All resistors are in ohms. k
Ω
=1000
Ω
, M
Ω
=1000k
Ω
Indication of resistance, which does not have one for rating
electrical power, is as follows: Pitch : 5mm
electrical power, is as follows: Pitch : 5mm
Rating
electrical
power
:
1
/
4
W
1
/
4
W in resistance,
1
/
10
W and
1
/
8
W in chip resistance.
: nonß ammable resistor.
: fusible resistor.
: internal component.
: panel designation and adjustment for repair.
All variable and adjustable resistors have characteristic curve B, unless
otherwise noted.
Readings are taken with a color-bar signal input.
Readings are taken with a 10M
otherwise noted.
Readings are taken with a color-bar signal input.
Readings are taken with a 10M
Ω
digital multimeter.
Voltages are DC with respect to ground unless otherwise noted.
Voltage variations may be noted due to normal production tolerances.
All voltages are in V.
S : Measurement impossibillity.
Voltage variations may be noted due to normal production tolerances.
All voltages are in V.
S : Measurement impossibillity.
: B+line.
: B-line (Actual measured value may be different).
: signal path (RF).
Circled numbers are waveform references.
RESISTOR
: RN METAL FILM
: RC SOLID
: FPRD NONFLAMMABLE CARBON
: FUSE NONFLAMMABLE FUSIBLE
: RW NONFLAMMABLE WIREWOUND
: RS NONFLAMMABLE METAL OXIDE
: RB NONFLAMMABLE CEMENT
:
: RN METAL FILM
: RC SOLID
: FPRD NONFLAMMABLE CARBON
: FUSE NONFLAMMABLE FUSIBLE
: RW NONFLAMMABLE WIREWOUND
: RS NONFLAMMABLE METAL OXIDE
: RB NONFLAMMABLE CEMENT
:
ADJUSTMENT RESISTOR
COIL
: LF-8L MICRO INDUCTOR
: LF-8L MICRO INDUCTOR
The components identiÞ ed by shading and
!
symbol are critical for safety. Replace
only with part number speciÞ ed.
The symbol
indicates a fast operating fuse and is displayed on the component
side of the board. Replace only with fuse of the same rating as marked.
Les composants identiÞ es per un trame et une marque
!
sont critiques pour la
securite. Ne les remplacer que par une piece portant le numero speciÞ e.
Le symbole
indique une fusible a action rapide. Doit etre remplace par une
fusible de meme yaleur, comme maque.
The components identiÞ ed by X in this basic schematic diagram
have been carefully factory-selected for each set in order to
satisfy regulations regarding X-ray radiation. Should replacement be
necessary, replace only with the value originally used.
have been carefully factory-selected for each set in order to
satisfy regulations regarding X-ray radiation. Should replacement be
necessary, replace only with the value originally used.
When replacing components identiÞ ed by Y, make the necessary
adjustments as indicated. If the results do not meet the speciÞ ed value,
change the component identiÞ ed by X and repeat the adjustment until
the speciÞ ed value is achieved. (See page 10)
adjustments as indicated. If the results do not meet the speciÞ ed value,
change the component identiÞ ed by X and repeat the adjustment until
the speciÞ ed value is achieved. (See page 10)
When replacing the parts listed in the table below, it is important to
perform the related adjustments.
perform the related adjustments.
CAPACITOR
: TA TANTALUM
: PS STYROL
: PP POLYPROPYLENE
: PT MYLAR
: MPS METALIZED POLYESTER
: MPP METALIZED POLYPROPYLENE
: ALB BIPOLAR
: ALT HIGH TEMPERATURE
: ALR HIGH RIPPLE
: TA TANTALUM
: PS STYROL
: PP POLYPROPYLENE
: PT MYLAR
: MPS METALIZED POLYESTER
: MPP METALIZED POLYPROPYLENE
: ALB BIPOLAR
: ALT HIGH TEMPERATURE
: ALR HIGH RIPPLE
SECTION 4: DIAGRAMS
Part Replaced ( )
HV ADJ
RV501
Part Replaced ( )
D Board
T501, IC501, RV501, R540,
R541, R542, R544, R564, R567,
R568, C532, C534, C539, C553,
C554, C555, C556, C558, C561
R541, R542, R544, R564, R567,
R568, C532, C534, C539, C553,
C554, C555, C556, C558, C561
HV Regulator
Circuit
Circuit
D Board
T501, R510, R543, R547, R549,
R552, R595, D515, D517, C540,
C542, C544, IC607, IC901, C951
R552, R595, D515, D517, C540,
C542, C544, IC607, IC901, C951
HV HOLD
DOWN Circuit
DOWN Circuit
D Board
T501, R545, R546, R548, R550,
R596, R934, C535, C541, IC605,
IC607, IC901
R596, R934, C535, C541, IC605,
IC607, IC901
Beam Current
Protector Circuit
Protector Circuit
REFERENCE INFORMATION
4-1. CIRCUIT BOARDS LOCATION
J Board
H Board
A Board
D Board
HMD-A240
— 15 —
4-3 BLOCK DIAGRAMS AND SCHEMATICS
1
1
1
1
2
3
4
5
6
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
BGND
GREEN
RGND
RED
GND
+12V
4
KR
KG
KB
G2
7
8
9
J001
+80V
+12V
PICTURE TUBE
(VIDEO)
CN309
HV
(TO FBT)
SIGNAL IN
CONNECTOR
15PIN D-SUB
B-IN
G-IN
R-IN
13
14
15
IC003
OSD
R-OSD
G-OSD
B-OSD
B-OSD
G-OSD
R-OSD
R-IN
G-IN
B-IN
R-OUT
G-OUT
B-OUT
R-OUT
G-OUT
B-OUT
R-IN
G-IN
B-IN
IC004
CUTOFF AMP
IC002
8
9
11
8
5
3
1
GND
+80V
NC
H
H1
CN301
1.2KV
BLK
CLAMP
10
VFLB
5
HFLB
SCL
2
1
SDA
IC001
12
OSD-BLK
OSD-BLK
SCL
8
SDA
7
R-OUT
G-OUT
B-OUT
R-BKG
G-BKG
B-BKG
4
TO JOO1
A BOARD
GND
30
C SYNC
PRE-AMP
SW
Q006
11
7
12
15
14
13
17
3
5
3
4
5
20
24
27
CRT DRIVE
+180V
+180V
18
STBY +5V
+5V
STBY +5V
+5V
9
7
CN302
BLUE
GGND
CN304
IICSCL
IICSDA
CBLK
BPCLP
GND
VRTRC
HRTRC
C SYNC
CN306
CN307
CN902
TO D BOARD
TO D BOARD
G1
-33V
TO D BOARD
CN510
TO D BOARD
FBT
9-978-884-01<17VC>BLK 1OF2
CN606
10
9
1
2
3
4
5
6
7
8
10
11
12
13
14
15
3
BLOCK DIAGRAM (1/2)
HMD-A240
— 16 —
1
2
1
2
3
4
5
6
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
10
1
2
3
4
5
6
7
8
1
2
3
4
5
1
2
3
4
5
1
2
3
4
5
1
2
3
4
1
1
2
3
4
5
6
7
1
2
3
4
1
2
3
4
5
CN501
CN510
S1007
S1003
S1001
CN1001
CN607
5P
5P
4
2
6
3
1
5
+12V
DGC1
NC
DGC2
CN600
DGND
RXD
TXD
DATA
CLK
RESET
CPU
IC901
22
BPCLAMP
26
+IN
-IN
SW-REG
OUT
Q602
IC601
3
1
IN1,2
DISABLE
OUT
OUT
GND
NC
BUFF
ROTATION
80V
DFT
T503
S-CAP CHANGE
TO S-CAP
CHANGE
REMOTE ON/OFF
V-OUT
IC401
HDT
T504
H.DRIVE OUT
H.OUT
Q507
Q510
Q503
HV
H DY+
H DY-
V DY-
HST
T505
OUT
POWER
)
(
AC IN
SW-REG CONT
DGC
V DY+
FBT
T501
LFT
1
RV501
D601
IC603
+80V
GND
H1
+12V
+5V
LF602
Q601
IC604
15V
PB4
15
34
35
54
37
36
RXD
TXD
38
39
20
28
30
C-SYNC
V-SYNC
H-SYNC
DEF. CONTROL
IC902
28
26
17
Q903,Q501,Q502
Q511
8P
CN701
CY4-
CY4+
CY3-
CY3+
CY2-
CY2+
CY1-
CY1+
IC702
CBLANK
7
49-53
S0-S4
-15V
6
+12V
+5V
IC502
V-IN
H-IN
46
DDCSCL
DDCSDA
H.OUT
V. DEF
12
Q505
Q504
CONV-CONTROL
IC701
33
PCI
Q521
BUFFER
18
PB1
IC501
PWM-CONT
19
18
8
3
3
4
6
1
20
H-REG
Q520
+80V
+12V
V.SAW
8
V-OUT
H-OUT
27
23
2
LOCK
3
4
16
17
SCL
SCL
SDA
48
47
PA5
PA6
DEGAUSS
5
4
14
DA3
14
H.FLY
32
HFB
13
2
3
27
10
H-STATICOUT
V-STATICOUT
V-SIN
VPOSIN
HD.IN
V.DIV
V.SIN
12
Q508
+15V
B4+
B1O
H-DRIVE
REF
B2O
B3O
OP2+
EPROM
IC905
HV-REG
HV-OUT
4
SYNC LOCK
Q519
SWITCH
PH2
CONVERGENCE
ROTATION+
ROTATION-
ROTATION
DCONV OUT
SCONV OUT
IC703
9
1
4
6
7
3
V-CONVOUT
H-CONVOUT
SDA
STBY +5V
STBY +5V
THP600
THP600A
RCC CONTROL
PHOTOCOUPLER
VCNTRL
OOB
VIN
14
PB3
16
Q522,Q524
7
1
5
180V
+180V
+180V
T601
SRT
STBY +5V
+5V
STBY +5V
9
8
6
2
7
5
2
4
H OUT
H OUT
Q525
V DF-AMP
IC607
12V
5V
IC605,608
HEATER
SW
Q603
HEATER
REG
IC602
1
4
DEGAUSS
Q604
Q605
4
DRIVE
12V
GND
CSYNC
CBLK
BPCLP
IIC SCL
IIC SDA
H RTRC
V RTRC
CN902
HOST GND1
DDC SDA1
DDC SCL1
GND
HSYNC
VSYNC
HOST 5V
/STBY 5V
CN903
STBY +5V
NC
AC-RECT
9
T506
LCT
TO CN901
PIN 1
FROM
Q525
25
LOCK
V RTRC
STBY 5V
GND
KEY
LED RED
LED GRN
STBY +5V
MENU
UP
RIGHT
LEFT
DOWN
STBY +5V
STBY +5V
DA4
5
FRONT PANEL
CN901
CN602
CN904
TO A BOARD
CN309
SIGNAL IN
CONNECTOR
15PIN D-SUB
TO A BOARD
CN304
IC908
SYNC INV.
IC906
EPROM
IC904
RESET
3
12V
L503
NC
NC
-33V
TO A BOARD
CN306
SV
TO CRT
TO A BOARD
CN301
Q512,Q513,Q514
STBY
OFF
CNT
STBY
STBY
ON
CNT
ON
MAIN
MAIN
(POWER SWITCH)
STBY ON
STBY CNT
STBY OFF
MAIN ON
MAIN CNT
9-978-884-01<17VC>BLK 2OF2
CN801
CN606
5V,12V REG
ERROR AMP
V.REF OUT
23
V-REF
13
V.REF
IN
5
ISENSE
5V REG
PROTECT
STBY CNTRL
H.DRIVE
1
2
3
4
5
6
7
8
10
11
12
13
14
15
BLOCK DIAGRAM (2/2)
HMD-A240
— 17 —
1
|
2 |
3
|
4
|
5
|
6
|
7
|
8
|
9
|
10
|
11
|
12
|
13
|
14
|
15
|
A
—
B
—
C
—
D
—
E
—
F
—
G
—
H
—
I
—
J
—
H
KB
KG
KR
G1
G2
GM
G4
RCV
HV
1
3
4
5
6
7
8
9
10
11
13
KR
KR
KG
KB
G2
G2
G1
G3
H
H
RCV
1
2
3
4
5
6
7
8
9
10
11
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
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
1
2
3
4
5
7
8
9
11
1
2
3
4
5
6
1
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
1
C022
C047
SG101
SG201
SG301
SG002
J001
D001
R130
R330
R
2
0
4
R304
R014
R003
R219
R319
R119
FB008
C007
C016
C011
C036
CN307
R032
R311
R351
R251
R151
CN304
C001
C002
IC004
D106
D206
D306
IC002
D104
D204
D304
D105
D205
D305
IC001
R004
R002
R005
Q006
R024
R028
C009
FB301
C046
C092
R107
R207
R307
R306
R033
FB001
FB003
FB004
FB005
FB006
FB009
FB010
FB201
C054
C102
C202
C302
C106
C206
C306
CN306
SG003
L001
R117
R217
C010
C012
C015
C049
C050
C053
C104
C105
C151
C204
C205
C251
C304
C305
C351
C042
R009
R052
L005
R102
R109
R202
R209
R302
R309
FB102
FB202
FB302
R051
C044
R001
IC003
SG001
CN301
L105
L205
L305
R218
R230
C013
C003
C014
R064
R317
R108
R208
R308
C004
R161
R261
R361
C212
C312
C112
L007
CN302
R104
R
2
0
6
R
1
0
6
CN309
R017
R006
R018
R020
R021
R030
F
B
1
0
1
D311
D211
D111
C035
R048
V901
C018
L002
R111
R211
FB016
FB017
47
25V
47
25V
1SR139
75
:CHIP
75
:CHIP
JW(5)
470
16V
16V
47
25V
1000p
500V
1P
100
:FPRD
47
1/2W
:SURGE
47
1/2W
:SURGE
47
1/2W
:SURGE
9P
WHT
(L TYPE)
1000p
500V
H8D2957
:CUT-OFF AMP
HSS82
:CLAMP
HSS82
:CLAMP
HSS82
:CLAMP
LM2415T
:VIDEO OUTPUT
HSS82
:PROTECTION
HSS82
:PROTECTION
HSS82
:PROTECTION
HSS82
:PROTECTION
HSS82
:PROTECTION
2SC2412K
:BUFFER
HSS82
:PROTECTION
1000p
500V
B
75
:CHIP
0.1
25V
25V
B:CHIP
0.1
25V
25V
B:CHIP
0.1
25V
25V
B:CHIP
100p
B:CHIP
0.01
B:CHIP
0.1
25V
25V
B:CHIP
0.1
25V
25V
B:CHIP
0.1
25V
25V
B:CHIP
0.01
B:CHIP
0.1
25V
25V
B:CHIP
0.1
25V
25V
B:CHIP
0.1
25V
25V
B:CHIP
0.1
25V
25V
B:CHIP
0.1
25V
25V
B:CHIP
0.1
25V
25V
B:CHIP
0.1
25V
25V
B:CHIP
0.1
25V
25V
B:CHIP
0.1
25V
25V
B:CHIP
1k
:RN-CP
1k
:RN-CP
10
:CHIP
8.2k
:RN-CP
1k
:RN-CP
0
:CHIP
0
:CHIP
0
:CHIP
560
:CHIP
8.2k
:CHIP
1.8k
:CHIP
330k
:CHIP
10k
:CHIP
100
:CHIP
2.2k
:CHIP
2.2k
:CHIP
1k
:CHIP
10k
:CHIP
470k
:CHIP
470k
:CHIP
1M
:CHIP
470k
:CHIP
2
2
:
C
H
I
P
470k
:CHIP
1M
:CHIP
470k
:CHIP
22
:CHIP
470k
:CHIP
1M
:CHIP
0.1
250V
:MPS
:MPS
0.1
250V
:MPS
:MPS
0.1
250V
:MPS
:MPS
0.1
250V
:MPS
:MPS
0.1
250V
:MPS
:MPS
0.1
250V
:MPS
:MPS
0.1
250V
:MPS
:MPS
47
100V
330k
1000p
500V
1000
10V
0.1
100V
1000p
500V
:B
1000p
B:CHIP
NEW
CXA2067AS
:PRE-AMP
CXD9620P
:OSD
JW(5)
0
:CHIP
100k
:CHIP
JW(15)
56
56
56
9.1k
:RN-CP
9.1k
:RN-CP
9.1k
:RN-CP
0.01
B:CHIP
75
75
75
15pF
12pF
15pF
6P
22
:CHIP
8
.
2
k
:
R
N
-
C
P
8
.
2
k
:
R
N
-
C
P
8P
100
:CHIP
100
:CHIP
100
:CHIP
47
:CHIP
47
:CHIP
1k
1PS226-115
PROT.
1PS226-115
PROT.
1PS226-115
PROT.
0.0047
2kV
:B
2.2M
1W
PICTURE
TUBE
2.2
250V
0
100
:FPRD
100
:FPRD
5.0 MM
5.0 MM
+12V
+
8
0
V
+
1
8
0
V
STBY+5V
2
3
4
5
6
7
8
9
10
11
12
1
V
B
I
A
S
G
N
D
3
V
C
C
G
N
D
2
G
N
D
1
GND
+12V
H1
GND
NC
1.2KV
+80V
VSSA
VCO
RP
VDDA
HFLB
SS
SDA
SCL
VDD
VFLB
INT
OSD_BLK
B_OSD
G_OSD
R_OSD
VSS
B
_
I
N
G
_
I
N
R
_
I
N
R
_
O
U
T
G
_
O
U
T
B
_
O
U
T
B
_
O
U
T
G
_
O
U
T
+180V
IICSCL
IICSDA
CBLK
BPCLP
SDA
SCL
G2
G BKG
+5V
SYNC IN
CLAMP
G OSD
C. SYNC
G GND
G OUT
BLK
OSD BLK
S/H G
GND
B IN
R IN
B BKG
R BKG
G IN
R GND
R OUT
S/H R
B GND
B OUT
S/H B
B OSD
R OSD
VRTRC
HRTRC
+5V
G
N
D
V
C
C
R
_
I
N
G
_
I
N
B
_
I
N
R
_
O
U
T
+
B
VCC B
VCC G
VCC R
C SYNC
FROM FBT
FROM FBT
G1
B.GND
BLUE
G.GND
GREEN
R.GND
RED
STBY 5V
CN902
TO D BOARD
TO D BOARD
CN606
(VIDEO)
0.2
4.2
CONNECTOR
15PIN D-SUB
SIGNAL IN
TO D BOARD
CN510
TO D BOARD
FBT
9-978-884-01<17VC>A BOARD
STBY 5V
STBY 5V
12V
12V
+180V
+80V
7
8
9
1 0
1 1
1 2
TO
D BOARD
TO
A BOARD
A BOARD
CN307
1
2
3
4
5
6
7
8
10
11
12
13
14
15
6
5
4
1
2
3
A BOARD - SCHEMATIC DIAGRAM
A BOARD IC VOLTAGE LIST
IC001
6
NC
13
0
20
2.1
27
1.9 IC002
6
79.4 IC003
6
5.0
13
0 IC004
6
NC
pin
volt
7
2.1
14
0
21
3.3
28
3.3
pin
volt
7
GND
pin
volt
7
4.7
14
0
pin
volt
7
67.3
1
4.7
8
4.7
15
0
22
11.9
29
11.9
1
56.6
8
2.1
1
0.5
8
4.5
15
0
1
GND
8
61.0
2
4.5
9
2.1
16
11.9
23
GND
30
0.06
2
GND
9
2.0
2
1.0
9
5.0
16
GND
2
11.9
9
62.4
3
2.5
10
3
17
0
24
2
3
56.3
10
11.9
3
1.0
10
0
3
4.8
10
NC
4
2.3
11
2
18
0.8
25
3.3
4
GND
11
2
4
5.0
11
NC
4
4.8
11
178.8
5
2.8
12
0.07
19
GND
26
GND
5
54.4
5
4.2
12
0
5
4.8
All voltages are in V
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