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Circuit Boards Location; Schematic Diagrams - Sony KDS-R50XBR1 Service Manual

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4-3. CIRCUIT BOARDS LOCATION

HM
K
H3
AK
C
QI
QT
S2
H1
H2
T3
T1
QU
Power Supply
DSU
Block

4-4. SCHEMATIC DIAGRAMS

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 MΩ 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.
V
: B + bus.
V
: B – bus.
F
: Signal path.
Schematic diagrams and printed wiring boards of the specified boards
for board replacement service are not included in this section.
See Appendix of this manual if you need them.
F
S1
G
ASU
QM
PD
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
Note: The components identified by shading and mark
0 are critical for safety. Replace only with part
number specified.
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.
– 40 –
KDS-R50XBR1/R60XBR1
RM-Y914
RM-Y914
Terminal name of semiconductors in silk screen
printed circuit (
*
)
Device
Printed symbol
Terminal name
Circuit
Collector
1
Transistor
Emitter
Base
Collector
Transistor
2
Emitter
Base
Cathode
3
Diode
Anode
Cathode
4
Diode
(NC)
Anode
Cathode
5
Diode
(NC)
Anode
Common
Diode
6
Anode
Cathode
Common
Diode
7
Anode
Cathode
Common
8
Diode
Anode
Anode
Common
9
Diode
Anode
Anode
Common
Diode
0
Cathode
Cathode
Common
qa
Diode
Cathode
Cathode
Anode
Cathode
qs
Diode
Anode
Anode
Cathode
Anode
Source
Transistor
Drain
qd
(FET)
D
D
Gate
G
G
Source
Transistor
S
S
Drain
qf
(FET)
Gate
D
D
Source
Transistor
G
qg
Drain
(FET)
Gate
S
S
Emitter
qh
Transistor
Collector
Base
C1
C2
C2
B1 E1
qj
Transistor
B1
B2
E2
B2 C1
E1
E2
C1
B2 E2
Transistor
qk
C1
C2
E1
B1 C2
B1
B2
C1
B2 E2
E1
E2
ql
Transistor
E1
B1 C2
E1
E2
C1
B2 E2
w;
Transistor
B1
B2
E1
B1 C2
C1
C2
C1(B2)
C2
E2
B1 E1
Transistor
wa
B1
C2
C1(B2)
E2
E2
(B2)
E1(B2)
E2
B1
E1
E2
Transistor
ws
B1
C1
C2
C1
C2
(B2)
E1(B2)
C2
E2
E1
B1
wd
Transistor
B1
C2
C1
C1
C2
Discrete semiconductot
(Chip semiconductors that are not actually used are included.)
G
Ver.1.5

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