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Circuit Boards Location; Printed Wiring Boards And Schematic Diagrams - Sony PVM-20M2U Service Manual

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-51-
SONY-SP0402
I
Druck 9
6-3. CIRCUIT BOARDS LOCATION
X
G
c
H
J
Q
S {PVM-20M2U/20M4U)
A
6-4.
PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
Note:
All capacitors are in
~F
unless otherwise noted.
pF:
~~F
50 WV or less are not indicated except for electrolytics.
Indication of resistance, which does not have one for rating
electrical power. is as follows.
Pitch: 5 mm
Rating electrical power
Y.
W
All resistors are in ohms.
~
: nonflammable resistor.
~
: fusible resistor.
6.
:
internal component.
• r:=J :
panel designation. and adjustment for repair.
All variable and adjustable resistors have characteristic curve
B. unless otherwise noted.
The components identified by
8
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 required, replace only with the value
originally used.
All
vo~ages
are in V.
Vo~age are de with respect to ground unless otherwise noted.
Readings are taken with a color-bar signal input.
Voltage variations may
be
noted due to normal production
tolerances.
- : B + b u s .
- - - : 8-
bus.
_. , ... ,.,.,.,.,.,._,,., ... : signal path.
No mark : with PAL colour-bar signal sreceived or common
voltage.
For the respective voltage ratings in SECAM. NTSC 3.58, NTSC 4.43
S-VIDEO, and ANALOG RGB modes, see the table
Reference information
RESISTOR
: RN
METAL FILM
: RC
SOLID
: FPRO
NONFLAMMABLE CARBON
:FUSE
NONFLAMMABLE FUSIBLE
:RW
NONFLAMMABLE WIREWOUNO
: RS
NONFLAMMABLE METAL OXIDE
: RB
NONFLAMMABLE CEMENT
When replacing components identified by
~
, make the
necessary adjustments indicated.
If results do not meet the
specmed value, change the component identffied by
B
and
repeat the adjustment until the specified value is achieved.
(Refer to R1536 adjust on Page 25 and 26.)
COIL
CAPACITOR
: LF-BL
: TA
MICRO INDUCTOR
TANTALUM
When replacing the part in below table. be sure to perform the
related adjustment.
Part replaced
(~)
Adjustment (8)
C512, C513, C523, C549, C592, D501,
D533, IC500, IC507, 0500, 0511, R506,
R1536
R508, R515, R516, R517, R518, R519,
(HOLD-DOWN)
R551, R1537, R1560··········· (A BOARD}
-52-
: PS
STYROL
: pp
POLYPROPYLENE
: PT
MYLAR-
: MPS
METALIZED POLYESTER
: MPP
METALIZED POLYPROPYLENE
:ALB
BIPOLAR
: ALT
HIGH TEMPERATURE
: ALR
HIGH RIPPlE
Note: Les composants identifi6s par une trame et
par une marque
&,
sont d'une importance
critique pour Ia s6curit6. Ne les remplacer
aue par des pillces de nurn6ro sp6cifi6.
-53-

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