Section 3: Diagrams; Circuit Boards Location; Printed Wiring Boards And Schematic Diagrams Information - Sony KDF-42WE655 Service Manual

3-1. CIRCUIT BOARDS LOCATION

H1
G1
G2
3-2. PRINTED WIRING 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 specifi ed.
All resistors are in ohms. kΩ=1000Ω, MΩ=1000kΩ
Indication of resistance, which does not have one for rating
electrical power, is as follows:
1 / W in resistance, 1 / W and
4 10
: nonfl ammable 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 10MΩ digital multimeter.
Voltages are DC with respect to ground unless otherwise noted.
Voltage variations may be noted due to normal production
tolerances.
KDF-42WE655/50WE655

SECTION 3: DIAGRAMS

HM
H2
Q Box
Assembly
KD
F
A
Pitch : 5mm
Rating electrical power :
1 / W in chip resistance.
16
T
C (Part of Optics Unit Block Assembly
Cannot be ordered separately)
H3
Power supply
block
RF antenna switch
P
B
U
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.
1 / W
4
The components identifi ed by shading and
only with part number specifi ed.
The symbol
side of the board. Replace only with fuse of the same rating as marked.
Les composants identifi es per un trame et une marque
securite. Ne les remplacer que par une piece portant le numero specifi e.
Le symbole
fusible de meme yaleur, comme maque.
! symbol are critical for safety. Replace
indicates a fast operating fuse and is displayed on the component
indique une fusible a action rapide. Doit etre remplace par une
KDF-42WE655/50WE655
! sont critiques pour la
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