Circuit Boards Location; Printed Wiring Boards And Schematic Diagram - Sony KVX-370 Service Manual

5-2. CIRCUIT BOARDS LOCATION

D3
M N
D2
04
•
H
A
)
B
5-3. PRINTED WIRING BOARDS AND
SCHEMATIC DIAGRAM
Note: The components identified by shading and mark
& are critical for safety. Replace only with
part number specified.
Note:
• Caution to be exercised when replacing chip components
Do not reuse the removed components but use new
components.
Caution should be taken as the negative side of the
tantalum capacitor is weak toward heat.
• All capacitors are in µF unless otherwise noted. p:µµF
50WV or less are not indicated except for electrolytic and
tantalums.
• All resistors are in ohms.
1 ooon. Mn 1 oookn
=
k.n
• Indication of resistar,ce, which does not have one for
rating electrical power is as follows.
j.Rating electrical I
power:1/10W
• : nonflamable resistor.
• 6 : internal component.
• : panel designation or adjustment for repair.
• All variable and adjustable resistors have characteristic
curve B, unless otherwise noted.
• The components identified by 8 in this manual 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 l;ji mark the
necessary adjustments indicated. If results do not meet
the specified value, change the component identified by
8 and repeat the adjustment until the specified value is
KVX-370
achieved. (Refer t o R529, R 530, R1 543, R1557
adjustment on page 10,11.)
When replacing the part in below table, be sure to perform
the related adjustment.
Part replaced ( l;ji ) Adjustment ( B
)
D 1 508, IC 1 501, R1 504,
R1534, R1535, R1 557,
+B Max
T1 502
R1557
(D1 board)
C1510, C1515, C1519,
C1520, C1533, D1519,
IC1502, 01503, R1515, HV Reg
R1517, R1540, R1541,
R1543
R1542, R1543, R1547,
RV1501, T1501
(FBl)
(D1
Board)
C507, C512, C513, C514,
D504, IC201, 0502, 0503,
R517, R518, R519, R522,
+B Hold down
R523, R524, R529, R530
R529, R530
(A Board)
D1518
(D1
Board)
Reference information
RESISTOR RN METAL FILM
RC SOLID
FPRD NONFLAMMABLE CARBON
FUSE NONFLAMMABLE FUSIBLE
RS NONFLAMMABLE METAL OXIDE
RB NONFLAMMABLE CEMENT
RW NONFLAMMABLE WIREWOUND
*
ADJUSTMENT RESISTOR
COil LF-8L MICRO INDUCTOR
CAPACITOR : TA TANTALUM
STYROl
PS
POLYPROPYLENE
pp
PT MYLAR
MPS METALIZED POLYESTER
: MPP METALIZED POLYPROPYLENE
: ALB BIPOLAR
:ALT HIGH TEMPERATURE
: AlR HIGH RIPPLE
• Readings are taken with a color-bar signal input.
• Readings are taken with a 1 OMO digital multimeter.
• Voltages are de with respect to ground unless otherwise
noted.
• Voltage variations may be noted due to normal production
tolerances.
•· All voltages are in V.
• -X: : Can not be measured.
• Circled numbers are waveform references.
• -- : B bus.
+
• --- : B - bus.
• '1,';s : signal path.
p.25
I I
A
[VIF. AFT. AHC. CHROMA. H DEF,· V DEF, H BLK PG. AF AMP, U/V TUNER]
-A Board- Conductor side -
-">�-
p.26