Diagrams; Note For Printed Wiring Boards And Schematic Diagrams - Sony TC-KB920S Service Manual

• Circuit Boards Location
• Abbreviation
AUS : Australian
MY : Malaysia
SP : Singapore
AC POWER board
HP board
PANEL board
LEAF SW
board
SECTION 5

DIAGRAMS

TRANSFORMER board (AEP, AUS)
AUDIO board
DOLBY-S boards
MAIN board
TRANS 1 board
TRANS 2 board
REC VOL board
(MY, SP)
(MY, SP)
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5-1. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS

(In addition to this, the necessary note is each block.)
Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ω and
1 / W or less unless otherwise
4
specified.
• : internal component.
¢
• 2 : nonflammable resistor.
• 5 : fusible resistor.
• C : panel designation.
Note: The components identified by mark ! or dotted line
with mark ! are critical for safety.
Replace only with part number specified.
• U : B+ Line.
• V : B– Line.
• H : adjustment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
no mark : PB
( ) : REC
• Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
E
: PB
a
: REC
• Abbreviation
AUS : Australian model.
MY : Malaysia model.
SP : Singapore model.
Note on Printed Wiring Boards:
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
• b : Pattern from the side which enables seeing.
• Abbreviation
AUS : Australian model.
MY : Malaysia model.
SP : Singapore model.
• Indication of transistor.
Q
B C E
These are omitted.
Q
B C E
These are omitted.
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