Section 5: Diagrams; Circuit Boards Location; Printed Wiring Board And Schematic Diagram Information - Sony TRINITRON KV-20FS120 Service Manual

5-1. CIRCUIT BOARDS LOCATION

HR Board
(KV-21FA310
Only)
K Board
(KV-21FA310 Only)
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 1 1
/ W in resistance, / 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.
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.
KV-20FS120/21FM120/21FS120/21FA310/24FS120/25FS120

SECTION 5: DIAGRAMS

A Board
/ W in chip resistance.
8
KV-20FS120/21FM120/21FS120/21FA310/24FS120/25FS120
The components identifi ed by shading and
safety. Replace only with part number specifi ed.
The symbol
on the component side of the board. Replace only with fuse of the
same rating as marked.
Les composants identifi es per un trame et une marque
critiques pour la securite. Ne les remplacer que par une piece portant
le numero specifi e.
Le symbole
remplace par une fusible de meme yaleur, comme maque.
The components identifi ed by
CV Board
diagram have been carefully factory-selected for each set in
order to satisfy regulations regarding X-ray radiation. Should
HB Board
replacement be necessary, replace only with the value
(All except
originally used.
KV-21FA310)
When replacing components identifi ed by
adjustments as indicated. If the results do not meet the specifi ed value,
change the component identifi ed by
the specifi ed value is achieved.
(Refer to Section 3: Safety Related Adjustments on Page 17.)
When replacing the parts listed in the table below, it is important to
perform the related adjustments.
Part Replaced (Y)
DY, T585, CRT, IC001, IC561,
IC600, C506, C507, C508, T511,
L510, C588, L588, C566, C561,
C563, D567, D568, D566, PH602,
R567, R568, R565, R566, R562,
R563, R561, R528..........A Board
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
symbol are critical for
indicates a fast operating fuse and is displayed
indique une fusible a action rapide. Doit etre
in this basic schematic
, make the necessary
and repeat the adjustment until
Adjustment (X)
HV HOLD-DOWN
RV565
CAPACITOR
: TA TANTALUM
: PS STYROL
: PP POLYPROPYLENE
: PT MYLAR
: MPS METALIZED POLYESTER
: MPP METALIZED POLYPROPYLENE
: ALB BIPOLAR
: ALT HIGH TEMPERATURE
: ALR HIGH RIPPLE
sont
37