Sony HCD-RG490 Service Manual page 110

HCD-RG490/RG590
2. DIAGRAMS
Note for Printed Wiring Boards and Schematic Diagrams
Note on Printed Wiring Board:
X : parts extracted from the component side.
Y : parts extracted from the conductor side.
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Indication of transistor
C
Q These are omitted.
B E
2
Note on Schematic Diagram:
All capacitors are in F unless otherwise noted. (p: pF)
50 WV or less are not indicated except for electrolytics
and tantalums.
All resistors are in and 1 /
4
specified.
Note: The components identified by mark 0 or dotted line
with mark 0 are critical for safety.
Replace only with part number specified.
A : B+ Line.
Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
: TAPE PLAY
{ } : REC
Voltages are taken with a VOM (Input impedance 10 M ).
Voltage variations may be noted due to normal produc-
tion tolerances.
Signal path.
E
: TAPE PLAY (DECK-A)
d
: TAPE PLAY (DECK-B)
G
: REC
Abbreviation
MX : Mexican model
W or less unless otherwise