Sony HMD-A240R Service Manual ▷ View online
— 14 —
HMD-A240R
RESISTOR
: 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
The components identified by shading and
!
symbol are critical for safety. Replace
only with part number specified.
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 identifies per un trame et une marque
!
sont critiques pour la
securite. Ne les remplacer que par une piece portant le numero specifie.
Le symbole
indique une fusible a action rapide. Doit etre remplace par une
fusible de meme yaleur, comme maque.
CAPACITOR
: TA TANTALUM
: PS STYROL
: PP POLYPROPYLENE
: PT MYLAR
: MPS METALIZED POLYESTER
: MPP METALIZED POLYPROPYLENE
: ALB BIPOLAR
: ALT HIGH TEMPERATURE
: ALR HIGH RIPPLE
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
HV Regulator
Circuit
D Board T501, R510, R543, R547, R549,
R552, R595, D515, D517, C540,
C542, C544, IC607, IC901, C951
HV HOLD
DOWN Circuit
D Board T501, R545, R546, R548, R550,
R596, R934, C535, C541, IC605,
IC607, IC901
Beam Current
Protector Circuit
REFERENCE INFORMATION
SECTION 4: DIAGRAMS
4-1. CIRCUIT BOARDS LOCATION
H Board
J Board
A Board
D Board
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 specified.
All resistors are in ohms. kΩ=1000Ω, MΩ=1000kΩ
Indication of resistance, which does not have one for rating electrical power,
All electrolytics are in 50V unless otherwise specified.
All resistors are in ohms. kΩ=1000Ω, MΩ=1000kΩ
Indication of resistance, which does not have one for rating 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.
: nonflammable 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 10MΩ 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.
Readings are taken with a color-bar signal input.
Readings are taken with a 10MΩ 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.
: B+line.
: B-line (Actual measured value may be different).
: signal path (RF).
Circled numbers are waveform references.
The components identified 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.
When replacing components identified by Y, make the necessary
adjustments as indicated. If the results do not meet the specified value,
change the component identified by X and repeat the adjustment until
the specified value is achieved. (See page 10)
When replacing the parts listed in the table below, it is important to
perform the related adjustments.
HMD-A240R
— 15 —
4-3. BLOCK DIAGRAMS AND SCHEMATICS
BLOCK DIAGRAM (1/2)
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
CN606
9-978-992-01<17VC>BLK 1OF2
10
9
1
2
3
4
5
6
7
8
10
11
12
13
14
15
3
HMD-A240R
— 16 —
BLOCK DIAGRAM (2/2)
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
S1001
CN1001
CN607
S801
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
VSYNC
HOST 5V /STBY 5V
CN903
STBY +5V
NC
AC-RECT
9
T506
LCT
TO CN901
PIN 1
FROM
Q525
Q525
25
LOCK
V RTRC
STBY 5V
GND
KEY
KEY
LED RED
LED GRN
LED GRN
STBY +5V
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
STBY
ON
CNT
CNT
ON
MAIN
MAIN
MAIN
(POWER SWITCH)
S
T
B
Y
O
O
N
S
T
B
Y
C
C
N
T
S
T
B
Y
O
O
F
F
M
A
I
N
O
O
N
M
A
I
N
C
C
N
T
CN801
CN606
9-978-992-01<17VC>BLK 2OF2
UP
LEFT
DOWN
RIGHT
MENU
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
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