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LC-26GA5E
LC-32GD9E
LC-32GA5E
LC-37GD9E
Service work should be performed only by qualifi ed service technicians who are thoroughly familiar with all
safety checks and the servicing guidelines which follow:
WARNING
1. For continued safety, no modifi cation of any circuit should be attempted.
2. Disconnect AC power before servicing.
CAUTION: FOR CONTINUED PROTECTION AGAINST A RISK OF
FIRE REPLACE ONLY WITH SAME TYPE
F701 (4A / 250 V)
BEFORE RETURNING THE RECEIVER (Fire & Shock Hazard)
Before returning the receiver to the user, perform the following safety checks:
1. Inspect all lead dress to make certain that leads are not pinched, and check that hardware is not lodged between the
chassis and other metal parts in the receiver.
2. Inspect all protective devices such as non-metallic control knobs, insulation materials, cabinet backs, adjustment and
compartment covers or shields, isolation resistor-capacitor networks, mechanical insulators, etc.
3. To be sure that no shock hazard exists, check for leakage current in the following manner.
LC-20B5E
• Plug the AC cord directly into a 220~240 volt AC outlet. (Do not use an isolation transformer for this test).
•Using two clip leads, connect a 1.5k ohm, 10 watt resistor paralleled by a 0.15µF capacitor in series with all exposed metal
IMPORTANT SERVICE SAFETY PRECAUTION
cabinet parts and a known earth ground, such as electrical conduit or electrical ground connected to an earth ground.
Service work should be performed only by qualified service technicians who are
Ë
•A true RMS reading multimeter should be used for this test, especially where the equipment uses a switch mode
thoroughly familiar with all safety checks and the servicing guidelines which follow:
power supply which may result in very non-sinusoidal leakage current.
WARNING
•Connect the resistor connection to all exposed metal parts having a return to the chassis (antenna, metal cabinet,
1. For continued safety, no modification of any circuit
screw heads, knobs and control shafts, escutcheon, etc.) and measure the AC voltage drop across the resistor.
should be attempted.
2. Disconnect AC power before servicing.
All checks must be repeated with the AC cord plug connection reversed. (If necessary, a nonpolarized adaptor plug must
CAUTION: FOR CONTINUED PROTECTION
AGAINST A RISK OF FIRE REPLACE ONLY WITH
be used only for the purpose of completing these checks.)
SAME TYPE F3701 (2A, 250V), F3702 (1.25A, 250V),
F6700 (1.25A, 250V), F6701 (1.25A, 250V), F6702
Any reading of 1.05V peak (this corresponds to 0.7 mA. peak AC.) or more is excessive and indicates a potential shock
(1.25A, 250V), F6703 (1.25A, 250V) AND F6704
(1.25A, 250V) FUSE.
hazard which must be corrected before returning the monitor to the owner.
BEFORE RETURNING THE RECEIVER
(Fire & Shock Hazard)
Before returning the receiver to the user, perform
the following safety checks:
1. Inspect all lead dress to make certain that leads are
not pinched, and check that hardware is not lodged
between the chassis and other metal parts in the
receiver.
2. Inspect all protective devices such as non-metallic
control knobs, insulation materials, cabinet backs,
adjustment and compartment covers or shields,
isolation resistor-capacitor networks, mechanical
insulators, etc.
3. To be sure that no shock hazard exists, check for
leakage current in the following manner.
• Plug the AC cord directly into a 110~240 volt AC outlet,
and connect the DC power cable into the receiver's
DC jack. (Do not use an isolation transformer for this
test).
• Using two clip leads, connect a 50k ohm, 10 watt
resistor paralleled by a 0.15µF capacitor in series with
all exposed metal cabinet parts and a known earth
ground, such as electrical conduit or electrical ground
connected to an earth ground.
SAFETY NOTICE
Many electrical and mechanical parts in LCD television have special safety-related characteristics.
SAFETY NOTICE
These characteristics are often not evident from visual inspection, nor can protection afforded by them be necessarily
Many electrical and mechanical parts in LCD television
increased by using replacement components rated for higher voltage, wattage, etc.
have special safety-related characteristics.
These characteristics are often not evident from visual
Replacement parts which have these special safety characteristics are identifi ed in this manual; electrical components
inspection, nor can protection afforded by them be
having such features are identifi ed by
necessarily increased by using replacement components
rated for higher voltage, wattage, etc.
Replacement parts which have these special safety
characteristics are identified in this manual; electrical
For continued protection, replacement parts must be identical to those used in the original circuit.
components having such features are identified by " å"
The use of a substitute replacement parts which do not have the same safety characteristics as the factory recommended
replacement parts shown in this service manual, may create shock, fi re or other hazards.
IMPORTANT SERVICE SAFETY PRECAUTION
• Use an AC voltmeter having with 5000 ohm per volt, or
higher, sensitivity or measure the AC voltage drop
across the resistor.
• Connect the resistor connection to all exposed metal
parts having a return to the chassis (antenna, metal
cabinet, screw heads, knobs and control shafts,
escutcheon, etc.) and measure the AC voltage drop
across the resistor.
All checks must be repeated with the AC cord plug
connection reversed. (If necessary, a nonpolarized
adaptor plug must be used only for the purpose of
completing these checks.)
Any reading of 0.75V peak (this corresponds to 0.5
mA. peak AC.) or more is excessive and indicates a
potential shock hazard which must be corrected before
returning the monitor to the owner.
AC SCALE
1.5k ohm
TEST PROBE
TO EXPOSED
METAL PARTS
and shaded areas in the Replacement Parts Lists and
Schematic Diagrams.
For continued protection, replacement parts must be
identical to those used in the original circuit.
"
".
The use of a substitute replacement parts which do not
!
have the same safety characteristics as the factory
recommended replacement parts shown in this service
manual, may create shock, fire or other hazards.
2
DVM
10W
0.15 µF
CONNECT TO
KNOWN EARTH
GROUND
4
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