Circuit Boards Location; Schematic Diagrams Information - Sony KLV-B20G10 Service Manual

3-2. CIRCUIT BOARDS LOCATION

B board
H4 board
KLV-B15G10
B board
H4 board
KLV-B20G10
– 18 –
KLV-B15G10/B20G10
H1 board
A board
H2 board
H1 board
A board
H2 board
D board
KLV-B15G10/B20G10
RM-Y1108 RM-Y1108
3-3. SCHEMATIC DIAGRAM INFORMATION
Note:
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 1/4W (CHIP: 1/10W)
• All resistors are in ohms.
• : nonflammable resistor.
• : fusible resistor
• ¢ : internal component.
• : panel designation or adjustment for repair.
• All variable and adjustable resistors have characteristic
curve B,
unless otherwise noted.
• All voltages are in V.
• : 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.
✽
• : Cannot be measured.
• NO MARK : PAL
• Circled numbers are waveform references.
• : B +bus.
• : B –bus.
÷
• : signal path.
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 component identified by shading and
mark ! are critical for safety. Replace only
with part number specified.
Device Printed symbol Terminal name
Collector
Transistor
Base Emitter
Collector
Transistor
Base Emitter
Cathode
Diode
Anode
Cathode
Diode
Anode (NC)
Cathode
Diode
Anode (NC)
Common
Diode
Anode Cathode
Common
Diode
Anode Cathode
Common
Diode
Anode Anode
Common
Diode
Anode Anode
Common
Diode
Cathode Cathode
Common
Diode
Cathode Cathode
Anode Cathode
Diode Anode Anode
Cathode Anode
Transistor Source
Drain
(FET)
Gate
G
Source
Transistor
Drain
(FET)
Gate
D
Source
Transistor
Drain
(FET)
Gate
S
Emitter
Transistor Collector
Base
C2 B1 E1
Transistor B1
E2 B2 C1
C1 B2 E2
Transistor
E1 B1 C2
B1
C1 B2 E2
Transistor
E1 B1 C2
C1 B2 E2
Transistor
B1
E1 B1 C2
E2 B1 E1
Transistor B1
C2 C1(B2)
(B2)
B1 E1 E2
Transistor B1
C1 C2
(B2)
E2 E1 B1
B1
Transistor
C2 C1
– 19 –
Circuit
D D
G
S S
D
G G
S
C1 C2
B2
E1 E2
C1 C2
B2
E1 E2
E1 E2
B2
C1 C2
C1(B2) C2
E2 E2
E1(B2) E2
C1 C2
E1(B2) C2
C1 C2