Sony KDS-50A2020 / KDS-55A2020 / KDS-60A2020 Service Manual ▷ View online
– 35 –
KDS-50A2020/55A2020/60A2020
K
RM-YD010 RM-YD010 RM-YD010
BLOCK DIAGRAM (10)
T6200
R6102
R6500
D6203
D6200
+
-
D6202
RECT
+
-
D6000
RECT
D6204
D6205
6.5V
6.5V
A9V
11V
AU_VCC
16.5V
STBY5V
STBY5V
STBY5V
D6201
D6513
D6108
THERMO FUSE
D6506
400V
OUT
GND
FB
L6507
Q6402
D6300
RECT
Q6400
PH6400
PH6200
PH6401
IC6401
PH6300
D6302
DRAIN
VCC
FB
SOURCE
SOURCE
T6300
RY6004
RY6003
6.5V
FB
VC1
OCP
VG(L)
VG(H)
VSENSE
SWITCHING
REGULATOR
VS
IC6202
IC6100
SHUNT
REGULATOR
IC6200
SHUNT
REGULATOR
SHUNT
REGULATOR
SHUNT
REGULATOR
IC6301
+9V
REG.
16
15
14
4
1
2
2
13
12
11
10
9
3
1
2
SWITCHING
REGULATOR
IC6300
SWITING
REGULATOR
IC6502
D6001
D6305
RECT
CN6901
CN6902
CN6501
D6207
D6304
1
2
3
A1,B1,
C1,A2,
B2,C2,
A3
B3,C3,
A4,B4,
C4,A5,
B5,C5
A15,B15,
C15,A16,
B16,C16
A20,B20,
C20,A21,
B21,C21,
C22
A28,B28,
C28
AU_VCC
AU_GND
1
16.5V
4
6.5V
5
6.5V
6
6.5V
1
LAMP DC
3
LAMP GND
A12
A9V
11V
6.5V
A26
STBY5V
16.5V
A24
REC_ON
B24
C24
C24
PFC_DET
AC_RLY
A27
G_OVP
C30
PANEL_FAN(FAN3)
A30
LAMP_EX_FAN(FAN1)
A29
PANEL_FAN_CONT
B31
FAN_ERR
B32
FAN_DRV
22
Q6101
DRIVE
DRIVE
Q6501,6502
SWITCHING
SWITCHING
DRIVE
Q6500,6505
SWITCHING
SWITCHING
RELAY
DRIVER
Q6100
DRIVE
DRIVE
Q6504
23
1
20
16
15
2
1
7
6
LATCH
Q6403,6404
+B
SWITCH
11
8
6
3
4
3
2
1
10
5
8
4
7
2
+
-
1
THRMO1
CN6005
3
THRMO2
AC (L)
AC (N)
2
1
1
(POWER SUPPLY)
G
AC IN
CN6001
F6001 L6001
L6002
TO LAMP
F
Q
TO
A1 BOARD
CN8805
TO
C BOARD
CN2002
Q6900
Q6902
Q6901
D6901
D6900
CN6900
1
PANEL_FAN_POW
3
2
2
PANEL_FAN_PROT
PANEL_FAN_GND
9
LAMP_EX_FAN_POW
8
7
LAMP_EX_FAN_PROT
LAMP_EX_FAN_GND
11V
PANEL_FAN_CNT
3
1
4 2
FAN CONTROL
IC6900
LAMP_EX_FAN_CNT
3
1
4 2
FAN CONTROL
IC6902
PH6000
Q6401
3
2
1
Q6200,6201
PH6402
IC6402
3
2
1
FAN
M
FAN
M
– 37 –
KDS-50A2020/55A2020/60A2020
K
RM-YD010 RM-YD010 RM-YD010
Reference information
RESISTOR
: RN
METAL FILM
: RC
SOLID
: FPRD
NONFLAMMABLE CARBON
: FUSE
NONFLAMMABLE FUSIBLE
: RW
NONFLAMMABLE WIREWOUND
: RS
NONFLAMMABLE METAL OXIDE
: RB
NONFLAMMABLE CEMENT
COIL
: LF-8L
MICRO INDUCTOR
CAPACITOR
: TA
TANTALUM
: PS
STYROL
: PP
POLYPROPYLENE
: PT
MYLAR
: MPS
METALIZED POLYESTER
: MPP
METALIZED POLYPROPYLENE
: ALB
BIPOLAR
: ALT
HIGH TEMPERATURE
: ALR
HIGH RIPPLE
4-3. CIRCUIT BOARDS LOCATION
Note:
• The parts marked “#” on schematic diagrams are not mounted.
• All capacitors are in
µF unless otherwise noted. (pF: µµF)
Capacitors without voltage indication are all 50 V.
• Indication of resistance, which does not have one for rating
electrical power, is as follows.
Pitch: 5 mm
Rating electrical power 1/4 W (CHIP : 1/10 W)
• All resistors are in ohms.
•
: nonflammable resistor.
• 5 : fusible resistor.
•
: internal component.
•
: panel designation, and adjustment for repair.
• All variable and adjustable resistors have characteristic curve B,
unless otherwise noted.
•
: earth-ground.
•
: earth-chassis.
• All voltages are in V.
• Readings are taken with a 10 M
Ω digital multimeter.
• Readings are taken with a color-bar signal input.
• Voltage variations may be noted due to normal production
tolerances.
•
*
: Can not be measured.
• Circled numbers are waveform references.
•
: B + bus.
•
: B – bus.
•
F
: Signal path.
4-4. SCHEMATIC DIAGRAMS
V
V
G
D
S
B1 E1
C2
B2 C1
E2
2
3
4
5
6
7
8
9
0
qa
qs
qf
qh
qj
qk
–
1
G
D
S
B2 E2
C1
B1 C2
E1
B2 E2
C1
B1 C2
E1
B2 E2
C1
B1 C2
E1
ql
B1 E1
E2
C1(B2)
C2
w;
B1
E2
C1
C2
ws
wd
(B2)
E1
(B2)
E1
E2
B1
C2
C1
wa
B1
E1
C2
B2
C1
E2
G
S
S
D
G
D
B1
E1
C2
B2
C1
E2
B1
E2
C2
C1(B2)
E2
B1
C1
C2
E1(B2)
C2
B1
C1
E2
E1(B2)
C2
B1
C1
E2
B2
E1
C2
Ver.1.5
Transistor
(FET)
(FET)
Transistor
Transistor
Transistor
Transistor
Transistor
Transistor
Transistor
Transistor
Transistor
Discrete semiconductot
(Chip semiconductors that are not actually used are included.)
Diode
Diode
Diode
Diode
Diode
Diode
Diode
Diode
Diode
Diode
Source
Source
Anode
Anode
(NC)
(NC)
Cathode
Anode
Cathode
Common
Cathode
Cathode
Common
Cathode
Cathode
Common
Common
Common
Common
Cathode
Anode
Base
Emitter
Collector
Base
Emitter
Collector
Drain
Gate
Gate
Drain
Device
Printed symbol
Terminal name
Circuit
Terminal name of semiconductors in silk screen
printed circuit ( )
Anode
Anode
Anode
Cathode
Anode
Anode
Cathode
qd
Transistor
(FET)
(FET)
Transistor
(FET)
(FET)
qg
Emitter
Collector
Base
Transistor
Source
Gate
Drain
Cathode
Anode
Anode
Cathode
Anode
Anode
*
Note: The components identified by shading and mark
0 are critical for safety. Replace only with part
number specified.
number specified.
A1
S1
S1
G
QT
B1
Power Supply
Block
Block
T
S2
H2
H1
H3
QM
C
Note:
Les composants identifies par une trame et une
marque 0 sont critiques pour la securite.
Ne les remplacer que par une piece portant le numero
specifie.
marque 0 sont critiques pour la securite.
Ne les remplacer que par une piece portant le numero
specifie.
Les composants identifiés par la marque
contiennent des informations confidentielles.
Suivre scrupuleusement les instructions
chaque fois qu’un composant est remplacé et/
ou réparé.
contiennent des informations confidentielles.
Suivre scrupuleusement les instructions
chaque fois qu’un composant est remplacé et/
ou réparé.
The components identified by mark contain
confidential information.
Strictly follow the instructions whenever the
components are repaired and/or replaced.
confidential information.
Strictly follow the instructions whenever the
components are repaired and/or replaced.
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