Circuit Boards Location; Schematic Diagrams And Printed Wiring Boards - Sony KLV-23HR1 Service Manual

3-3. CIRCUIT BOARDS LOCATION

B2 board
H1 board
H3 board

3-4. SCHEMATIC DIAGRAMS AND PRINTED WIRING BOARDS

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 1/4 W (CHIP : 1/10 W)
• All resistors are in ohms.
•
TU board : nonflammable resistor.
•
: fusible resistor.
A board
•
: internal component.
•
: panel designation, and adjustment for repair.
• All variable and adjustable resistors have characteristic curve B, unless otherwise noted.
G board
•
: earth-ground.
•
: earth-chassis.
• When replacing the part in below table, be sure to perform the related adjustment.
• All voltages are in V.
• Readings are taken with a 10 M 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.
Note: The components identified by shading and
H2 board
mark ! are critical for safety. Replace only
with part number specified.
Note: Les composants identifiés par un tramé et
U1 board
une marque ! sont critiques pour la
sécurité. Ne les remplacer que par une pièce
portant le numéro spécifié.
• Divided circuit diagram
Schematic diagrams of A and B2 boards are divided into serveral pieces.
Information to where the line is to be connected is printed at the end of
wach line.
For example, [ TO A1/5, A2/5 ] means the line is connected to
Ref. No. 1 of A (1/5) and A (2/5) schematic diagrams.
TO A1/5, A2/5
Circuit diagram division code
Terminal name of semiconductors in silk screen
printed circuit ( * )
Circuit
Device Printed symbol Terminal name
Collector
1
Transistor
Base Emitter
Collector
2
Transistor
Base Emitter
Cathode
3
Diode
Anode
Cathode
4
Diode
Anode (NC)
Cathode
5
Diode
Anode (NC)
Common
6 Diode
Anode Cathode
Common
7
Diode
Anode Cathode
Common
8
Diode
Anode
Anode
Common
9
Diode
Anode Anode
Common
0
Diode
Cathode
Cathode
Common
!¡
Diode
Cathode Cathode
Anode Cathode
!™
Diode Anode Anode
Cathode Anode
Source
Transistor
!£
Drain
D D
(FET) Gate
G G
Source
Transistor
S
!¢ S
Drain
(FET)
Gate
D D
Source
Transistor
!∞
G
Drain
(FET)
Gate
S S
Emitter
!§
Transistor Collector
Base
C1 C2
C2 B1 E1
!¶
Transistor B1 B2
E2 B2 C1
E1 E2
C1 B2 E2
!•
Transistor
C1 C2
E1 B1 C2
B1 B2
C1 B2 E2
!ª E1 E2
Transistor
E1 B1 C2
E1 E2
C1 B2 E2
@º
Transistor B1 B2
E1 B1 C2
C1 C2
C1(B2) C2
E2 B1 E1
@¡ Transistor
B1
C2 C1(B2)
E2 E2
E1(B2) E2
(B2)
B1 E1 E2
@™
Transistor
B1
C1 C2
C1 C2
(B2) E1(B2) C2
E2 E1 B1
@£
Transistor
B1
C2 C1
C1 C2
– Discrete semiconductot
Ver.1.6
(Chip semiconductors that are not actually used are included.)
G
KLV-23HR1 (UC) 3-7