Sony TC-K670 - Page 15

5-5. SCHEMATIC DIAGRAM — System Control Section—
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2100-05
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Note on Schematic Diagram:
ee @eeee#¢
All capacitors are in uF unless otherwise noted.
pF: BuF
50 WV or less are not indicated except for electrolytics
and tantalums.
All resistors are in Q and % W or less unless otherwise
specified.
A : internal component.
wt : fusible resistor.
Note:
The components identified
by mark A\ or dotted line
with mark A\ are critical for
safety.
Replace only with part
number specified.
Note:
Les composants identifiés par
une marque /\ sont critiques
pour la sécurité.
Ne ies remplacer que par une
piece portant le numéro spéci-
fié,
Voltages and waveforms are dc with respect to ground under
: B+ Line.
.B— | : B— Line.
Cc) ; adjustment for repair.
no-signal conditions.
no mark : STOP
( ): PLAY
< >: REC
| > NORMAL TAPE
1} =: CrO, TAPE
IV 9; METAL TAPE
Voltages are taken with a VOM (impedance 10 MQ).
Voltage variations may be noted due to normal production
tolerances.
Wavefroms are taken with a oscilloscope.
Voltage variations may be noted due to normal production
tolerances.
Signal path.
> : PB
>») : REC
K570 : TC-K570
K670 : TC-K670
KB77ES : TC-K677ES