KDL-50R550A, KDL-50R555A, KDL-50R557A, KDL-60R520A, KDL-60R550A, KDL-60R551A, KDL-60R555A, KDL-60R557A, KDL-70R520A, KDL-70R550A, KDL-70R551A, KDL-70R555A, KDL-70R557A - Sony TV Service Manual (repair manual). Page 7

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Chassis: RB1FK, BL
1-1. 
PRINTED CIRCUIT BOARDS AND SCHEMATIC DIAGRAMS INFORMATION
All capacitors are in µF unless otherwise noted. pF : µµF 50WV or 
less are not indicated except for electrolytics and tantalums.
All electrolytics are in 50V unless otherwise specified.
All resistors are in ohms.  k
=1000, M=1000k
Indication of resistance, which does not have one for rating 
electrical power, is as follows: 
Pitch : 5mm 
 
 
    Rating 
electrical 
power 
1
/
W
1
/
W in resistance, 
1
/
10 
W and 
1
/
16 
W in chip resistance.
: nonflammable resistor
 : fusible resistor
 : internal component
 : panel designation and adjustment for repair
 : earth ground
 : earth-chassis
All variable and adjustable resistors have characteristic curve B, unless 
otherwise noted.
Readings are taken with a color-bar signal input.
Readings are taken with a 10M
 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.
S : Measurement impossibility.
: B+line.
: B-line.  (Actual measured value may be different).
: signal path. (RF)
Circled numbers are waveform references.
The components identified by shading and 
!
 symbol are critical for safety. Replace 
only with part number specified. 
The symbol 
 indicates a fast-blow fuse and is displayed on the component 
side of the board. Replace only with fuse of the same rating as marked.
NOTE: The components identified by a red outline and a   mark contain confidential 
information. Specific instructions must be adhered to whenever these components 
are repaired and/or replaced. 
See Appendix A: Encryption Key Components in the back of this manual. 
CAPACITOR
: TA 
TANTALUM
: PS 
STYROL
: PP 
POLYPROPYLENE
: PT 
MYLAR
: MPS 
METALIZED POLYESTER
: MPP 
METALIZED POLYPROPYLENE
: ALB 
BIPOLAR
: ALT 
HIGH TEMPERATURE
: ALR 
HIGH RIPPLE
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
G
D
S
B1 E1
C2
B2 C1
E2
2
3
4
5
6
7
8
9
1
G
D
S
B2 E2
C1
B1 C2
E1
B2 E2
C1
B1 C2
E1
B2 E2
C1
B1 C2
E1
B1 E1
E2
C1(B2)
C2
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.1.6
Transistor
(FET)
Transistor
Transistor
Transistor
Transistor
Transistor
Transistor
Transistor
Transistor
Transistor
Discrete semiconductor
(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
*
18
11
17
16
15
14
13
12
10
21
20
19
23
22
SECTION 1:  DIAGRAMS
Chassis: RB1FK, BL 
7
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