1.
GENERAL
Nakamichi 620 control functions are shown below.
1.
Peak Power Indicator (L ch)
2.
Peak Power Indicator (R ch)
3. AC Power Indicator
4.
Power Switch
5. Power Indicator Threshold Selector
Switch (High)
6. Power Indicator Threshold Selector
Switch (Low)
7. Fuse
8. Voltage Selector
9. Output Terminals
10.
input Jacks
Fig.
1.1
CAUTIONS
The Nakamichi 520 incorporates iarge capacitances. it is
very dangerous to access the capacitor for a duration of
about 3 minutes after ihe power switch has been turned
off because of incompiete discharging. Use extreme care
when accessing the capacitor for repair purposes.
Never short the capacitor terminals with a screwdriver or a
similar tool after the power switch is turned off, with an
attempt to discharging the capacitor. (Shorting the ter-
minal in such a way can meit the shorted point leading to
a hole, and will give adverse effects on the capacitor
itself.)
Fig.
1.2
The recommended way :o discharge the capaciior as
quickly as possible is to turn off the power suppiy with
sound emitting through the loudspeaker or to discharge
the capacitor with resistances of 10012 — 300H, approx.
20W.
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