Sony KF-WE42A1, Руководство по обслуживанию, Страница: 33 / 288

KF-WE42A1/WE50A1/WS60A1
RM-1022 RM-1022 RM-1022
– 43 – – 44 –
4-3. CIRCUIT BOARDS LOCATION 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.
k
Ω
=1000
Ω
, M
Ω
=1000k
Ω
• Indication of resistance, which dose not have one for rating electrical power, is
as follows.
Pitch : 5mm
Rating electrical power :
1
/
4
W
• : 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 10M
Ω
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)
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.
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
G
D
S
B1 E1 C2
B2 C1 E2
2
3
4
5
6
7
8
9
0
!¡
!™
!¢
!§
!¶
!•
–
1
G
D
S
B2 E2 C1
B1 C2 E1
B2 E2 C1
B1 C2 E1
B2 E2 C1
B1 C2 E1
!ª
B1 E1 E2
C1(B2) C2
@º
B1
E2
C1 C2
@™
@£
(B2)
E1
(B2)
E1
E2 B1
C2 C1
@¡
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)
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
!£
Transistor
(FET)
Transistor
(FET)
!∞
Emitter
Collector
Base
Transistor
Source
Gate
Drain
Cathode
Anode
Anode
Cathode
Anode
Anode
A
F
G1
UG
G2
RF splitter
Power supply
block
H3
T
H4
HMG
H1
MS2C
C
KD
B
H2
A
F
G1
UG
G2
RF splitter
Power supply
block
H3
T
H2
HMG
H1
MS2C
C
KD
• KF-WE42M1/WE50M1
• KF-WS60M1
B