Circuit Boards Location; Schematic Diagrams - Sony KP-HW51K90J Service Manual

6-2. CIRCUIT BOARDS LOCATION

S
V
CR
H1
H2
CG
V
U
A
CB
B
AD
D
F
G

6-3. SCHEMATIC DIAGRAMS

Note:
• 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
Rating electrical power : 1 / 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.
• The components identified by in this basic schematic diagram have been
carefully factory-selected for each set in order to satisfy regulations regarding
X-ray radiation.
Should replacement be required, replace only with the value originally used.
• When replacing components identified by , make the necessary adjust-
ments indicated. If results do not meet the specified value, change the compo-
nent identified by and repeat the adjustment until the specified value is
achieved.
(Refer to VR8001 and VR8002 adjustment on Page 33.)
• Readings are taken with a NTSC 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.
H3
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.
* : 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
• Divided schematic diagram
Schematic diagrams of A, AD, B, D, G, and U boards are divided into several
pieces. Information to where the line is to be connected is printed
at the end of each.
For example, [ TO A1/5,A2/5_1 ] means the line is connected to
Ref. No. 1 of A(1/5) and A(2/5) schematic diagrams.
TO A1/5,A2/5_1
Ref. No.
Name of divided schematic diagram
Terminal name of semiconductors in silk screen
printed 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
Transistor Source
!£
Drain
(FET) Gate
Transistor Source
!¢
Drain
(FET) Gate
D
Source
Transistor
!∞
Drain
(FET)
Gate
S
Emitter
!§
Transistor Collector
Base
C2 B1 E1
!¶
Transistor
E2 B2 C1
C1 B2 E2
!•
Transistor
E1 B1 C2
!ª C1 B2 E2
Transistor
E1 B1 C2
C1 B2 E2
@º
Transistor
E1 B1 C2
E2 B1 E1
@¡ Transistor
C2 C1(B2)
(B2)
B1 E1 E2
@™
Transistor
C1 C2
(B2)
E2 E1 B1
@£
Transistor
C2 C1
– Discrete semiconductot
(Chip semiconductors that are not actually used are included.)
– 45 –
KP-HW51K90J/HW57K90J
Circuit
D D
G G
S S
D
G G
S
C1 C2
B1 B2
E1 E2
C1 C2
B1 B2
E1 E2
E1 E2
B1 B2
C1 C2
C1(B2) C2
B1
E2 E2
E1(B2) E2
B1
C1 C2
E1(B2) C2
B1
C1 C2
Ver.1.5
RM-Y909K RM-Y909K