Section 3: Diagrams; Circuit Boards Location; Printed Wiring Boards And Schematic Diagrams Information - Sony KDL-32L4000 Service Manual

3-1. CIRCUIT BOARDS LOCATION

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.
KDL-32L4000/37L4000

SECTION 3: DIAGRAMS

BM4
Pitch : 5mm
Rating electrical power :
1 / W in chip resistance.
16
SWITCH UNIT (Contains H1 Board)
G1D (KDL-32L4000)
G2D (KDL-37L4000)
HM6
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 identifi ed by shading and
1 / W
only with part number specifi ed.
4
The symbol
side of the board. Replace only with fuse of the same rating as marked.
NOTE: The components identifi ed by a red outline and a mark contain confi dential
information. Specifi c 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.
! symbol are critical for safety. Replace
indicates a fast operating fuse and is displayed on the component
KDL-32L4000/37L4000
39