SA-WM40 — Sony Audio Service Manual (repair manual). Page 3

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3
SECTION  1
GENERAL
SECTION  2
DIAGRAMS
• Location of controls
   – Front View (a part) –
– Upper View (a part) –
– Rear View (a part) –
2-1.
NOTE  FOR  PRINTED  WIRING  BOARD  AND  SCHEMATIC  DIAGRAM
• Circuit Boards Location
CONTROL board
POWER SW UC board
PS board
POWER TR board
MAIN board
Note on Schematic Diagram:
• All capacitors are in 
µ
F unless otherwise noted.  pF: 
µµ
F
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in 
 and 
1
/
4
 
W or less unless otherwise
specified.
C
: panel designation.
U
: B+ Line.
V
: B– Line.
• Voltages are dc with respect to ground under no-signal
conditions.
no mark : Power on
(
) : Automatic power off
: Impossible to measure
• Voltages are taken with a VOM (Input impedance 10 M
).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Signal path.
F
: AUDIO
• Abbreviation
AUS
: Australian model
CND : Canadian model
Note:
The components identi-
fied by mark 
0
 or dotted
line with mark 
0
 are criti-
cal for safety.
Replace only with part
number specified.
Note:
Les composants identifiés par
une marque 
0
 sont critiques
pour la sécurité.
Ne les remplacer que par une
pièce por tant le numéro
spécifié.
Note on Printed Wiring Boards:
X
: parts extracted from the component side.
Y
: parts extracted from the component side.
b
: Pattern from the side which enables seeing.
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