Section 5: Diagrams; Circuit Boards Location; Printed Wiring Board And Schematic Diagram Information - Sony KV-21FA210 TRINITRON Service Manual

5-1. CIRCUIT BOARDS LOCATION

KB Board
HR Board
M3 Board
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 1
/ W in resistance, /
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.
A Board
1
W and / W in chip resistance.
8

SECTION 5: DIAGRAMS

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,
CV Board
change the component identifi ed by X and repeat the adjustment until
the specifi ed value is achieved. (Refer to Section 3: Safety Related
Adjustments on Page 15.)
When replacing the parts listed in the table below, it is important to
perform the related adjustments.
DY, T585, CRT, IC001, IC561,
IC604, C507, C508, C506, T511,
L510, C588, L588, C566, C561,
C563, D567, D568, D566,
PH602, R567, R568, R565,
R566, R562, R563, R561, R528,
R668....................A Board
REFERENCE INFORMATION
RESISTOR
COIL
CAPACITOR
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.
— 29 —
Part Replaced ( )
Y
: RN METAL FILM
: RC SOLID
: FPRD NONFLAMMABLE CARBON
: FUSE NONFLAMMABLE FUSIBLE
: RW NONFLAMMABLE WIREWOUND
: RS NONFLAMMABLE METAL OXIDE
: RB NONFLAMMABLE CEMENT
: ADJUSTMENT RESISTOR
: LF-8L MICRO INDUCTOR
: TA TANTALUM
: PS STYROL
: PP POLYPROPYLENE
: PT MYLAR
: MPS METALIZED POLYESTER
: MPP METALIZED POLYPROPYLENE
: ALB BIPOLAR
: ALT HIGH TEMPERATURE
: ALR HIGH RIPPLE
!
symbol are critical for safety. Replace
indicates a fast operating fuse and is displayed on the component
KV-21FA210
Adjustment ( )
HV HOLD-DOWN
R565