Safety Ргесашйіопв5; Insulation Resistance Test; Disassembly Instructions - Technics RS-B14 Service Manual

Ш SAFETY PRECAUTIONS (For U.S.A.)
. Before servicing, unplug the power cord to prevent an electric shock.
. Check the condition of the power cord. Replace if wear or damage is evident.
. After servicing, be sure to restore the lead dress, insulation barriers, insulation papers, shields,
etc.
Aa WPM —
5. Before returning the serviced equipment to the customer, be sure to make the following insulation
resistance test to prevent the customer from being exposed to a shock hazard.
Ш INSULATION RESISTANCE TEST (For U.S.A.)
1. Unplug the power cord and short the two prongs of the plug with a jumper wire.
2. Turn on the power switch.
3. Measure the resistance value with ohmmeter between the jumpered AC plug and each exposed
metal cabinet part, such as screwheads, antenna, control shafts, handle brackets, etc. Equipment
with antenna terminals should read between 3MQ and 5.2M to all exposed parts. (Fig. 1)
Equipment without antenna terminals should read approximately infinity to all exposed parts.
(Fig. 2)
* Note: Some exposed parts may be isolated from the chassis by design. These will read infinity.
Antenna
terminal
Exposed Exposed
metal metal
part part
Ohmmeter d jussis
Fig. 1 Fig. 2
Resistance = 3M2—5.2M& Resistance = Approx оо
4. If the measurement is outside the specified limits, there is a possibility of a shock hazard. The
equipment should be repaired and rechecked before it is returned to the customer.
Ш DISASSEMBLY INSTRUCTIONS
The head azimuth can be
adjusted by removing the
cassette lid.