Circuit Boards Location; Schematic Diagrams And Printed Wiring Boards - Sony TRINITRON CPD-4402 Service Manual

4-2. CIRCUIT BOARDS LOCATION

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4-3. SCHEMATIC DIAGRAMS AND PRINTED WIRING BOARDS

Note:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytic.
• Indication of resistance, which does not have one for rating
electrical power, is as follows.
Pitch: 5 mm
Rating electrical power 1/4 W (CHIP: 1/10 W)
• All resistors are in ohms.
• : nonflammable resistor.
• : fusible resistor.
• : internal component.
• : panel designation and adjustment for repair.
• All variable and adjustable resistors have characteristic
curve B, unless otherwise noted.
• : earth-ground
• : earth-chassis.
• The components identified by
diagram have been carefully factory-selected for each set in
order to satisfy regulations regarding X-ray radiation.
Should replacement be required, replace only with the value
originally used.
• When replacing components identified by
necessary adjustments by using RV901 ( ) as indicated.
(See page 7)
Note: The components identified by shading and
mark are critical for safety. Replace only with
part number specified.
Note: Les composants identifies per un trame et une
marque sont critiques pour la securite. Ne les
remplacer que par une piece portant le numero
specifie.
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A
D
in this basic schematic
, make the
• When replacing parts shown in the table below, be sure to
perform the safety related adjustment.
HV ADJ
HV Regulator
D board
Circuit
HV Protector
D board
Circuit
D board
Beam Current
Protector
Circuit
• All voltages are in volts.
• Readings are taken with a 10 M W digital multimeter
• Readings are taken with a color-bar signal input.
• Voltage variations may be noted due to normal production
tolerances.
• * : Cannot be measured.
• Circled numbers are waveform references.
• : B +bus.
• : B - bus.
Part Replaced ( )
RV901
Part Replaced ( )
T901, IC901, R924, R925,
RV901
T901, R917, R918, R923,
R920, R919, R1004, C920,
D911, D912
R933, R932, R921, R1006,
D915, D917, IC901, T901