Circuit Boards Location; Schematic Diagrams Information - Sony KP-FR43M31 Service Manual

6-2. CIRCUIT BOARDS LOCATION

SR board
HA1 board
HC1 board
HX board
VM board
CG board
CB board
KP-FR43M31/FR43M91
SR board
VM board
CR board
HB1 board
BH board
G1 board
DS board
AD board
T board
UG board
MG board
A board
D board
– 95 –
KP-FR43M31/FR43M91
RM-GA001 RM-GA001
6-3. 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.
Note: "A" board schematic diagram is divided into 7 blocks.
Each block is named by its function and block
"number". eg: Processor (Block 001)
Joint connection between boards can be identified
using the block number followed by the grid's guide.
eg: -<PWR-OFF MUTE
002 : 4E
Meaning: Block 001 joint "PWR-OFF MUTE" is
connected to Block 002 joint "PWR-OFF MUTE"
located at grid 4E.
Terminal name of semiconductors in silk screen
printed circuit (*)
Device Printed symbol Terminal name Circuit
Collector
1 Transistor
Base Emitter
Collector
2 Transistor
Base Emitter
Cathode
3 Diode
Anode
Cathode
Diode
4
Anode (NC)
Cathode
5 Diode
Anode (NC)
Common
Diode
6
Anode Cathode
Common
Diode
7
Anode Cathode
Common
8 Diode
Anode Anode
Common
9 Diode
Anode Anode
Common
0 Diode
Cathode Cathode
Common
qa Diode
Cathode Cathode
Anode Cathode
Diode Anode Anode
qs
Cathode Anode
Transistor Source
Drain
qd
(FET) D
Gate
G G
Source
Transistor
S
Drain
qf
(FET)
Gate
D D
Source
Transistor
G
qg Drain
(FET)
Gate
S S
Emitter
Transistor Collector
qh
Base
C1 C2
C2 B1 E1
Transistor B1
qj
E2 B2 C1
E1 E2
C1 B2 E2
qk Transistor
C1 C2
E1 B1 C2
B1
C1 B2 E2
E1 E2
Transistor
ql
E1 B1 C2
E1 E2
C1 B2 E2
Transistor
w; B1
E1 B1 C2
C1 C2
C1(B2) C2
E2 B1 E1
Transistor B1
wa
C2 C1(B2)
E2 E2
(B2) E1(B2) E2
B1 E1 E2
ws Transistor B1
C1 C2
C1 C2
E1(B2) C2
(B2)
E2 E1 B1
B1
wd Transistor
C2 C1
C1 C2
– Discrete semiconductot
(Chip semiconductors that are not actually used are included.)
– 96 –
D
S
G
B2
B2
B2
Ver.1.5