Section 5: Diagrams; Circuit Boards Location; Printed Wiring Board And Schematic Diagram Information - Sony KV-21FA315 Manual De Servicio

5-1. CIRCUIT BOARDS LOCATION

KV-29FA515 Pictured
K Board
5-2. PRINTED WIRING BOARD AND
SCHEMATIC DIAGRAM 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. 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 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 10M digital multimeter.
Voltages are DC with respect to ground unless otherwise noted.
Voltage variations may be noted due to normal production tolerances.
KV-21FA315/21FA515/29FA315/29FA515

SECTION 5: DIAGRAMS

A Board
1 / W in chip resistance.
8
C Board
V Board
HC Board
(Refer to Section 3: Safety Related Adjustments on Page 36.)
When replacing the parts listed in the table below, it is important to
perform the related adjustments.
Part Replaced (Y)
C531, C532, D519, D520,
D521, IC501, IC600, PH602,
R529, R530, R531, R532,
R533, R550, T503 (FBT),
T504 (DFT)
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
KV-21FA315/21FA515/29FA315/29FA515
The components identifi ed by shading and
symbol are critical for safety. Replace only with
part number specifi ed.
The symbol indicates a fast operating fuse
and is displayed on the component side of the
board. Replace only with fuse of the same rating
as marked.
All voltages are in V.
S : Measurement impossibillity.
: B+line.
: B-line.
(Actual measured value may be different).
: signal path. (RF)
Circled numbers are waveform references.
The components identifi ed by X 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 necessary, replace only with
the value originally used.
When replacing components identifi ed by Y,
make the necessary adjustments as indicated.
If the results do not meet the specifi ed value,
change the component identifi ed by X and
repeat the adjustment until the specifi ed value
is achieved.
Adjustment (X)
HV HOLD-DOWN
R530, R531
CAPACITOR
: TA TANTALUM
: PS STYROL
: PP POLYPROPYLENE
: PT MYLAR
: MPS METALIZED POLYESTER
: MPP METALIZED POLYPROPYLENE
: ALB BIPOLAR
: ALT HIGH TEMPERATURE
: ALR HIGH RIPPLE
!
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