Sharp DX-AT50H (serv.man2) Service Manual / Specification ▷ View online
DX-AT50H
– 2 –
1. IMPORTANT SERVICE NOTES
BEFORE RETURNING THE DVD VIDEO PLAYER
Before returning the DVD video player to the user,
perform the following safety checks.
perform the following safety checks.
1. Inspect all lead dress to make certain that leads are
not pinched or that hardware is not lodged between
the chassis and other metal parts in the DVD video
player.
the chassis and other metal parts in the DVD video
player.
2. Inspect all protective devices such as non-metallic
control knobs, insulation materials, cabinet backs,
adjustment and compartment covers or shields, isola-
tion resistor/capacitor networks, mechanical insula-
tors etc.
adjustment and compartment covers or shields, isola-
tion resistor/capacitor networks, mechanical insula-
tors etc.
3. To be sure that no shock hazard exists, check for
current in the following manner.
Plug the AC line cord directly into a 230 volt AC outlet
(Do not use an isolation transformer for this test).
Using two clip leads, connect a 1.5 kohm, 10 watt
resistor paralleled by a 0.15
Plug the AC line cord directly into a 230 volt AC outlet
(Do not use an isolation transformer for this test).
Using two clip leads, connect a 1.5 kohm, 10 watt
resistor paralleled by a 0.15
µ
F capacitor in series with
all exposed metal cabinet parts and a known earth
ground, such as a water pipe or conduit.
Use an DVM or VOM with 1000 ohm per volt, or higher,
sensitivity or measure the AC voltage drop across the
resistor (See Diagram).
ground, such as a water pipe or conduit.
Use an DVM or VOM with 1000 ohm per volt, or higher,
sensitivity or measure the AC voltage drop across the
resistor (See Diagram).
Move the resistor connection to earth exposed metal
part having a return path to the chassis (metal cabinet,
screw heads, knobs and control shafts, etc.) and
measure the AC voltage drop across the resistor.
Reverse the AC plug on the set and repeat AC voltage
measurements for each exposed part. Any reading of
1.4 V rms (this corresponds to 0.7 mA rms AC.) or
more is excessive and indicates a potential shock
hazard which must be corrected before returning the
DVD video player to the owner.
part having a return path to the chassis (metal cabinet,
screw heads, knobs and control shafts, etc.) and
measure the AC voltage drop across the resistor.
Reverse the AC plug on the set and repeat AC voltage
measurements for each exposed part. Any reading of
1.4 V rms (this corresponds to 0.7 mA rms AC.) or
more is excessive and indicates a potential shock
hazard which must be corrected before returning the
DVD video player to the owner.
IMPORTANT SAFEGUARDS AND PRECAUTIONS (FOR U.K. ONLY)
SSVM
AC SCALE
2k ohms.
10W
0.15
TEST PROBE
TO EXPOSED
METAL PARTS
METAL PARTS
CONNECT TO
KNOWN EARTH
GROUNG
KNOWN EARTH
GROUNG
F
DX-AT50H
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How to manual eject
Remove the top cabinet, the bottom cabinet, the top support angle and the front unit.
(Refer to “CABINET DISASSEMBLY INSTRUCTIONS” (page 10).)
The trays can be ejected when the slide board is moved to the left with a thin screwdriver as shown in the figure below.
(Refer to “CABINET DISASSEMBLY INSTRUCTIONS” (page 10).)
The trays can be ejected when the slide board is moved to the left with a thin screwdriver as shown in the figure below.
Tray
Screwdriver
Slide Plate
Front View
To run the DVD player unit separately
Manufactured under license from Dolby Laboratories. “Dolby” and the double-D symbol are trademarks of Dolby Laboratories.
“DTS” and “DTS DIGITAL OUT” are trademarks of Digital Theater Systems. Inc.
WF6
Q1351
Base
Base
DVD MAIN PWB (BOTTOM VIEW)
JJ703
Display
