LC-32WD1E - Sharp TV Service Manual (repair manual)

LC-32WD1E/S/RU and LC-32WT1E

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

S37J1LC32WD1E

[1] PRINTING FROM THIS BOOK

 . . . . . . . . . . . . . . . i

[2] SAFETY PRECAUTIONS

 . . . . . . . . . . . . . . . . . . . . ii

[3] PRECAUTIONS FOR LEAD-FREE SOLDER

[4] SAFETY WARNINGS

CHAPTER 1  SPECIFICATIONS

CHAPTER 2  OPERATION MANUAL

CHAPTER 3  DIMENSIONS

CHAPTER 4  REMOVING OF MAJOR PARTS

[1] UPGRADING SOFTWARE . . . . . . . . . . . . . . . 5-1
[2] ENTERING THE PUBLIC MODE MENUS  . . . 5-5
[3] REMOTE CONTROL KEY OPERATION 

[4] PUBLIC MODE SETTINGS. . . . . . . . . . . . . . . 5-5
[5] ENTERING THE SERVICE MENUS . . . . . . . . 5-6
[6] SERVICE MODE REMOTE CONTROL 

CHAPTER 6  TROUBLESHOOTING TABLE

CHAPTER 7  MAJOR IC INFORMATION

CHAPTER 8  OVERALL WIRING DIAGRAM

CHAPTER 9  PRINTED WIRING BOARD

[1] LED/IR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-1
[2] SIDE I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-2
[3] KEYPAD. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-3
[4] POWER UNIT PRINTED WIRING BOARD . . .9-4
[5] MAINBOARD . . . . . . . . . . . . . . . . . . . . . . . . . .9-5

CHAPTER 10  SCHEMATIC DIAGRAM

[1] DESCRIPTION OF SCHEMATIC DIAGRAM.10-1
[1] LED/IR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-2
[2] SIDE I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-3
[3] KEYBOARD . . . . . . . . . . . . . . . . . . . . . . . . . .10-4
[4] MAINBOARD . . . . . . . . . . . . . . . . . . . . . . . . .10-5
[5] POWER SUPPLY UNIT . . . . . . . . . . . . . . . .10-19

i

LC-32WD1E/S/RU and LC-32WT1E

This manual contains service instructions for the Sharp AQUOS LCD colour television, model numbers 

•

LC-32WD1E, LC-32WT1E, LC-32WD1S, LC-32WD1RU 

This manual contains information and procedures to (1) isolate defective parts and repair them and (2) return the television to a safe, 
normal operating condition. 

No attempt should be made to service or disassemble the product beyond the procedures provided in this document. 

The manufacturer will not be liable for (1) any injury to person or product that results from attempting to service the product beyond 
the instructions provided in this manual or (2) the incorrect or mis-use of the information in this manual. 

This manual is copyrighted and all rights are reserved. This product may not, in whole or in part, be copied, photocopied, translated, 
or reduced to any electronic or machine-readable form without prior written consent, except for copies retained by the purchaser for 
backup purposes.

The information in this manual is subject to change without notice. Any changes will be made and published in future releases of this 
manual. 

NO WARRANTY OR REPRESENTATION, EITHER EXPRESSED OR IMPLIED, IS MADE WITH RESPECT TO THIS 
DOCUMENTATION, ITS QUALITY, PERFORMANCE, MERCHANTABILITY, OR FITNESS FOR A PARTICULAR PURPOSE.

When you print this manual from Adobe® Acrobat®, the book will automatically print to 
the (default) page size. If you want the oversized sized pages to automatically print to a 
larger page size, do the following: 

1.

In Adobe Acrobat, select File > Print. 

2.

In the Print dialog box, in the Page Handling section, select Chose Paper 
Source by PDF page size. 

3.

Select OK to print. 

This book contains a large number of complicated graphics. Depending on your printer, 
you may have difficulties printing some of these graphics. To correct this problem, do the 
following: 

1.

In Adobe Acrobat, select File > Print. 

2.

In the Print dialog box, select Advanced. 

3.

In the Advanced Print Setup dialog box, select Print as Image. 

4.

Select OK to print.

1. These instructions may differ slightly depending on what version and type of Adobe Acrobat you are using. 

ii

LC-32WD1E/S/RU and LC-32WT1E

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.

•

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.

•

Use an AC voltmeter having with 5000 ohm per volt, or higher, sen-
sitivity 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 1.05 V 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 color 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.

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

Service work should be performed only by qualified service technicians who are thoroughly familiar with all safety checks and the
servicing guidelines which follow:

FOR CONTINUED PROTECTION AGAINST A
RISK OF FIRE REPLACE ONLY WITH SAME
TYPE FUSE.

DVM

AC SCALE

1.5k ohm

10W

TO EXPOSED
METAL PARTS

CONNECT TO
KNOWN EARTH
GROUND

0.15

μF

TEST PROBE

iii

LC-32WD1E/S/RU and LC-32WT1E

•

“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:

•

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

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

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

ZHNDAi123250E

J

φ0.3mm  250g (1roll) 

BL

ZHNDAi126500E

J

φ0.6mm  500g (1roll)

BK

ZHNDAi12801KE

J

φ1.0mm  1kg (1roll)

BM