Sony BVM-14M4DE Maintenance Manual page 5

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4-3. Circuit Boards Location
X
BV
(14M4DE/14M4DJ)
C
G
BC
(14M4DE/14M4DJ)
H
J
Q
(Terminal Board)
A
BB
(14M4DE/14M4DJ)
4-4. Printed Wiring Boards and
Schematic Diagrams
Note:
All capacitors are in µF unless otherwise noted.
•
pF: µµF 50WV are not indicated.
• Indication of resistance, which does not have one for rating
electrical power, is as follows.
Pitch: 5 mm
Rating electrical power 1/4W
• Chips resistors are 1/10W.
• All resistors are in ohms.
• : nonflammable resistor.
• : fusible resistor.
• : internal component, and adjustment for repair.
¢
• : panel designation.
• All variable and adjustable resistors have characteristic curve B,
unless otherwise noted.
• METAL FILM (:RN, :RN-CP) resistors in 1%, 0.50%, 1/4W unless
otherwise specified.
• The components identified by 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.
• When replacing components identified by , make the necessary
adjustments indicated. If results do not meet the specified value,
change the component identified by and repeat the adjustment
until the specified value is achieved.
(Refer to R1536 adjust on page 3-9(E), 3-10(E))
• When replacing the part in below table be sure to parform the
related adjustment.
E F
Part replaced ( )
Adjustment ( )
C512, C513, C523, C549, C592,
D501, D533, IC500, IC507, Q500,
R1536
Q511, R506, R508, R515, R516,
( HOLD-DOWN )
R517, R518, R519, R551, R1536,
R1537, R1560 ............... (A BOARD)
• All voltages are in V.
• Voltage are dc 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 tolerance.
• : B+ bus.
• : B- bus.
• : signal path.
• : Can not be measured.
*
• No mark : with PAL color-bar signal received or common voltage.
• For the respective voltage raltage in SECAM, NTSC 3.58, NTSC
4.43, S-VIDEO, and ANALOG RGB modes, see the table.
• BV BOARD is non signal.
• Circled numbers are waveform references.
Reference information
RESISTOR : RN METAL FILM
: RC SOLID
: FPRD NONFLAMMABLE CARBON
: FUSE NONFLAMMABLE FUSIBLE
: RW NONFLAMMABLE WIREWOUND
: RS NONFLAMMABLE METAL OXIDE
: RB NONFLAMMABLE CEMENT
COIL : LF-8L MICRO INDUCTOR
CAPACITOR : TA TANTALUM
: PS STYROL
: PP POLYPROPYLENE
: PT MYLAR
: MPS METALIZED POLYESTER
: MPP METALIZED POLYPROPYLENE
: ALB BIPOLAR
: ALT HIGH TEMPERATURE
: ALR HIGH RIPPLE
Note:
The components identified by mark ! are critical for
safety. Replace only with the part number specified.
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