DOWNLOAD Sharp LC-32GD8EA Service Manual ↓ Size: 2.36 MB | Pages: 22 in PDF or view online for FREE

 

IMPORTANT SERVICE SAFETY PRE-
CAUTION ...........................................................ii
PRECAUTIONS FOR USING LEAD-FREE 
SOLDER ........................................................... iii

Parts marked with "

" are important for maintaining the safety of the set. Be sure to replace these parts with specified ones for maintaining the

safety and performance of the set.

TopPage

CONTENTS

LC-32GD8EA/RUA, LC-32BT8EA/RUA

No. SY6Z3LC32D8EA

In the interests of user-safety (Required by safety regulations in some countries) the set shouldA
be restored to its original condition and only parts identical to those specified should be used.

OUTLINE

This model is based on the LC-32GD8E, LC-32BT8E and is changed some parts. This Service Manual covers the
modifications alone. For the other points, refer to the LC-32/37GD8E/RU, LC-32/37BT8E/RU Service Manual.

LC-32GD8EA/RUA, LC-32BT8EA/RUA

 i

LC-32GD8EA/RUA, LC-32BT8EA/RUA

Service Manual

 

PWB ASSEMBLIES

AV Unit

DUNTKD604FM10

←

–

POWER Unit

DUNTKD605FM14

←

–

OPERATION Unit

DUNTKD606FMV0

←

–

R/C, LED Unit

DUNTKD607FMV0

←

–

DIGITAL TUNER Unit

CKITKD609FM01

←

–

DIGITAL Unit

DUNTKD628FM01

←

–

MAIN Unit

DUNTKD890FM06

DUNTKD890FM28

Some parts changed

MAIN Unit
C1747

Capacitor

–

VCCCCY1HH101JY

Add

C1748

Capacitor

–

VCCCCY1HH101JY

Add

C1749

Capacitor

–

VCKYCY1HB221KY

Add

C1750

Capacitor

–

VCCCCY1HH101JY

Add

C1751

Capacitor

–

VCCCCY1HH101JY

Add

C1752

Capacitor

–

VCCCCY1HH101JY

Add

IC1905

IC

VHISII9023+-1Q

VHISII9021+-1Q  or  VHISII9023+-1Q

or use

P1701

Plug

–

QPLGNA342WJZZY

Add

P2305

Plug

QPLGNA522WJQZY

QPLGNA493WJZZY

Change

R1715

Resistor

–

VRS-CY1JF470JY

Add

R1717

Resistor

VRS-CY1JF000JY

VRS-CY1JF470JY

Change

R1718

Resistor

–

VRS-CY1JF470JY

Add

R1730

Resistor

–

VRS-CY1JF470JY

Add

R1731

Resistor

–

VRS-CY1JF102JY

Add

R1736

Resistor

–

VRS-CY1JF102JY

Add

R1752

Resistor

VRS-CY1JF470JY

–

Delete

R1773

Resistor

VRS-CY1JF000JY

–

Delete

R1774

Resistor

VRS-CY1JF470JY

–

Delete

R1775

Resistor

VRS-CY1JF103JY

–

Delete

R2303

Resistor

VRS-CY1JF000JY

–

Delete

CABINET AND MECHANICAL PARTS
    Please refer to a Parts list.

PACKING PARTS AND ACCESSORIES
    Please refer to a Parts list.

LC-32GD8EA/RUA, LC-32BT8EA/RUA

ii

LC-32GD8EA/RUA, LC-32BT8EA/RUA

Service Manual

 

„

1. For continued safety, no modification of any circuit should be

attempted.

2. Disconnect AC power before servicing.

„

3. 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.

4. 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.

5. To be sure that no shock hazard exists, check for leakage current in

the following manner.

• 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 paral-

leled by a 0.15

µF capacitor in series with all exposed metal cabinet

parts and a known earth ground, such as electrical conduit or elec-
trical ground connected to an earth ground.

• A true RMS reading multimeter should be used for this test, espe-

cially where the equipment uses a switch mode power supply
which may result in very non-sinusoidal leakage current.

• 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 1.05 peak (this corresponds to 0.7 mA. peak AC.) or
more is excessive and indicates a potential shock hazard which
must be corrected before returning the monitor to the owner.

///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

Many electrical and mechanical parts in LCD colour television have
special safety-related characteristics.

These characteristics are often not evident from visual inspection, nor
can protection afforded by them be 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 components having such features
are identified by "

" and shaded areas in the Replacement Parts List

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.

///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

CAUTION: FOR CONTINUED PROTECTION

AGAINST A RISK OF FIRE REPLACE ONLY WITH

SAME TYPE FUSE.

F701 (4A / AC250V)

DVM

AC SCALE

1.5k ohm

10W

TO EXPOSED

METAL PARTS

CONNECT TO

KNOWN EARTH

GROUND

0.15

µF

TEST PROBE

LC-32GD8EA/RUA, LC-32BT8EA/RUA

 iii

„

• “ALL PWBs” of this model employs lead-free solder. The LF symbol indicates lead-free solder, and is attached on the PWBs and service manuals.

The alphabetical character following LF shows the type of lead-free solder. 

Example:

• For the Inverter PWB Units the type used in nickel, so they are marked as LFn. 

„

• When fixing the PWB soldered with the lead-free solder, apply lead-free wire solder. Repairing with conventional lead wire solder may cause dam-

age or accident due to cracks.

As the melting point of lead-free solder (Sn-Ag-Cu) is higher than the lead wire solder by 40 

°C, we recommend you to use a dedicated soldering

bit, if you are not familiar with how to obtain lead-free wire solder or soldering bit, contact our service station or service branch in your area.

„

• As the melting point of lead-free solder (Sn-Ag-Cu) is about 220 

°C which is higher than the conventional lead solder by 40 °C, and as it has poor

solder wettability, you may be apt to keep the soldering bit in contact with the PWB for extended period of time. However, Since the land may be
peeled off or the maximum heat-resistance temperature of parts may be exceeded, remove the bit from the PWB as soon as you confirm the
steady soldering condition.

Lead-free solder contains more tin, and the end of the soldering bit may be easily corroded. Make sure to turn on and off the power of the bit as
required.

If a different type of solder stays on the tip of the soldering bit, it is alloyed with lead-free solder. Clean the bit after every use of it.

When the tip of the soldering bit is blackened during use, file it with steel wool or fine sandpaper.

• Be careful when replacing parts with polarity indication on the PWB silk.

Lead-free wire solder for servicing

ZHNDAi123250E

BL

J

φ0.3mm 250g (1roll)

ZHNDAi126500E

BK

J

φ0.6mm 500g (1roll)

ZHNDAi12801KE

BM

J

φ1.0mm 1kg (1roll)

Indicates lead-free solder of tin, silver and copper.

Indicates lead-free solder of tin, silver and nickel.