Safety instructions
1. General safety
Safety regulations require that during a repair:
. Connect the unit to the mains via an isolation
transformer.
. Replace safety components indicated by the symbol
, only by components identical to the original ones.
Any other component substitution (other than original
type) may increase risk of fire or electrical shock
hazard.
Safety regulations require that after a repair, you must
return the unit in its original condition. Pay, in particular,
attention to the following points:
. Route the wires/cables correctly, and fix them with
the mounted cable clamps.
. Check the insulation of the mains lead for external
damage.
. Check the electrical DC resistance between the
mains plug and the secondary side:
1) Unplug the mains cord, and connect a wire
between the two pins of the mains plug.
2) Set the mains switch the “on” position (keep
the mains cord unplug).
3) Measure the resistance value between the
mains plug and the front panel, controls, and
chassis bottom.
4) Repair or correct unit when the resistance
measurement is less than 1M
Ω
.
5) Verify this, before you return the unit to the
customer/user (ref. UL-standard no. 1492).
6) Switch the unit “off”, and remove the wire
between the two pins of the mains plug.
2.Laser safety
This unit employs a laser. Only qualified service personnel may
remove the cover, or attempt to service this device (due to
possible eye injury).
Laser device unit
Type : Semiconductor laser
: InGaAIP (DVD)
: AIGaAs (CD)
Wavelength : 658nm (DVD)
: 783nm (CD)
Power out objective lens: 1.0mW (DVD read)
: 1.2mW (CD read)
Note: Use of controls or adjustments or performance of
procedure other than those specified herein, may result in
hazardous radiation exposure. Avoid direct exposure to beam.
Safety instruction, Warning
&
Notes
1-3
http://www.jdwxzlw.com/?fromuser=华盛维修
家电维修资料网，免费下载各种维修资料
