Read Sony MHC-GNZ444D / SA-WG99V Service Manual online
3
SA-WG99V
SECTION 1
DIAGRAMS
Note on Printed Wiring Boards:
• X : Parts extracted from the component side.
• a
• X : Parts extracted from the component side.
• a
: Through hole.
•
:
Pattern from the side which enables seeing.
Note on Schematic Diagrams:
• All capacitors are in µF unless otherwise noted. (p: pF)
• All capacitors are in µF unless otherwise noted. (p: pF)
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• 2 : nonflammable resistor.
• 5 : fusible resistor.
• All resistors are in Ω and
• 5 : fusible resistor.
• All resistors are in Ω and
1
/
4
W or less unless otherwise
specified.
• C : panel designation.
• A : B+ Line.
• B : B– Line.
• Voltages and dc with respect to ground under no-signal
• B : B– Line.
• Voltages and dc with respect to ground under no-signal
conditions.
no mark : Power on
no mark : Power on
• Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Signal path.
d
: AUDIO
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
(In addition to this, the necessary note is printed in each block.)
Note: The components identified by mark 0 or dotted line
with mark 0 are critical for safety.
Replace only with part number specified.
Replace only with part number specified.
• Circuit Boards Location
PT board
MAIN board
LED VOL board
POWER SWITCH board
INPUT board
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