Circuit Boards Location - Sony KF-WE50A1 Service Manual

4-3. CIRCUIT BOARDS LOCATION

• KF-WE42M1/WE50M1
H2
KD
A
H1
G1
F
• KF-WS60M1
KD
A
H1
G1
F
HMG
H2
H4
– 43 –
MS2C
B
T
HMG
H3
C
Power supply
block
RF splitter
G2
UG
MS2C
B
T
H3
C
Power supply
block
RF splitter
UG
G2
4-4. SCHEMATIC DIAGRAMS
Note:
• The parts marked "#" on schematic diagrams are not mounted.
• Capacitors without voltage indication are all 50V.
• All resistors are in ohms.
kΩ=1000Ω, MΩ=1000kΩ
• Indication of resistance, which dose not have one for rating electrical power, is
as follows.
Pitch : 5mm
1
Rating electrical power : / W
4
• : nonflammable resistor.
• : fusible resistor.
• : internal component.
• : panel designation and adjustment for repair.
• All variable and adjustable resistors have characteristic curve B, unless other-
wise noted.
• : earth-chassis.
• Readings are taken with a PAL 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.
* : Measurement impossibillity.
• Circled numbers are waveform references.
• : B+ bus.
• : B– bus.
• : signal path.(RF)
Reference information
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
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 symbol display is on the component slde.
The components identified by shading and mark
are critical for safety. Replace only with part number
specified.
The symbol indicate fast operating fuse.
Replace only with fuse of same rating as maked.
KF-WE42A1/WE50A1/WS60A1
RM-1022 RM-1022
Terminal name of semiconductors in silk screen
printed circuit ( )
*
Circuit
Device Printed symbol Terminal name
Collector
1
Transistor
Base Emitter
Collector
2
Transistor
Emitter
Base
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
(FET) Gate
G
Source
Transistor
!¢ S
Drain
(FET) Gate
D
Source
Transistor
!∞
Drain G
(FET)
Gate
S
Emitter
!§
Transistor Collector
Base
C1
C2 B1 E1
!¶
Transistor
B1
E2 B2 C1
E1
C1 B2 E2
!•
Transistor
C1
E1 B1 C2
B1
C1 B2 E2
!ª E1
Transistor
E1 B1 C2
E1
C1 B2 E2
@º
Transistor
B1
E1 B1 C2
C1
C1(B2)
E2 B1 E1
@¡ Transistor
B1
C2 C1(B2)
E2
E1(B2)
(B2)
B1 E1
E2
@™
Transistor B1
C1 C2
C1
E1(B2)
(B2)
E1
E2 B1
@£
Transistor
B1
C2 C1
C1
–
Discrete semiconductot
(Chip semiconductors that are not actually used are included.)
– 44 –
RM-1022
D
G
S
D
G
S
C2
B2
E2
C2
B2
E2
E2
B2
C2
C2
E2
E2
C2
C2
C2
Ver.1.5