Sharp LC-32DH57E-BK User manual

SERVICE MANUAL
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.
This document has been published to be used for
after sales service only.
The contents are subject to change without notice.
SAFETY PRECAUTION
IMPORTANT SERVICE SAFETY PRE-
CAUTION ............................................................i
Precautions for using lead-free solder ...............ii
End of life disposal ............................................ iii
CHAPTER 1. OPERATION MANUAL
[1] SPECIFICATIONS ......................................... 1-1
[2] OPERATION MANUAL .................................. 1-2
[3] DIMENSIONS ................................................ 1-6
CHAPTER 2. REMOVING OF MAJOR PARTS
[1] REMOVING OF MAJOR PARTS ................... 2-1
CHAPTER 3. ADJUSTMENT PROCEDURE
[1] ADJUSTMENT PROCEDURE ....................... 3-1
CHAPTER 4. TROUBLESHOOTING TABLE
[1] TROUBLESHOOTING TABLE....................... 4-1
CHAPTER 5. MAJOR IC INFOMATIONS
[1] MAJOR IC INFOMATIONS ............................ 5-1
CHAPTER 6. BLOCK DIAGRAM/WIRING DIAGRAM
[1] SYSTEM BLOCK DIAGRAM.........................6-1
[2] OVERALL WIRING DIAGRAM ......................6-2
CHAPTER 7. PRINTED WIRING BOARD
[1] MAIN UNIT PRINTED WIRING BOARD........7-1
[2] LED UNIT/KEY UNIT PRINTED WIRING
BOARD..........................................................7-5
[3] POWER UNIT PRINTED WIRING
BOARD..........................................................7-6
[4] INVERTER UNIT PRINTED WIRING
BOARD..........................................................7-8
CHAPTER 8. SCHEMATIC DIAGRAM
[1] DESCRIPTION OF SCHEMATIC DIA-
GRAM............................................................8-1
[2] SCHEMATIC DIAGRAM ................................8-2
Parts Guide
TopPage
CONTENTS
No. S59Z3LC32DH57
LCD COLOUR TELEVISION
MODELS
LC-32DH57E-BK
LC-32DH57RU-BK
LC-32DH57S-BK
In the interests of user-safety (Required by safety regulations in some countries) the set should be restored to its orig-
inal condition and only parts identical to those specified should be used.
LC-32DH57E-BK/RU-BK/S-BK

LC-32DH57E-BK/RU-BK/S-BK
i
LC-32DH57E-BK Service Manual
SAFETY PRECAUTION
IMPORTANT SERVICE SAFETY PRECAUTION
WARNING
1. For continued safety, no modification of any circuit should be
attempted.
2. Disconnect AC power before servicing.
BEFORE RETURNING THE RECEIVER
(Fire & Shock Hazard)
Before returning the receiver to the user, perform the following
safety checks:
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 0.15µF 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.
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
SAFETY NOTICE
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:
CAUTION:
FOR CONTINUED PROTECTION AGAINST A
RISK OF FIRE REPLACE ONLY WITH SAME
TYPE FUSE.
F7001, F7002 (3.15A/250V)
DVM
AC SCALE
1.5k ohm
10W
TO EXPOSED
METAL PARTS
CONNECT TO
KNOWN EARTH
GROUND
0.15 µ F
TEST PROBE

LC-32DH57E-BK/RU-BK/S-BK
ii
Precautions for using lead-free solder
Employing lead-free solder
• “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:
Using lead-free wire solder
• 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.
Soldering
• 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
Part No. Description Code
ZHNDAi123250E J φ0.3mm 250g (1roll) BL
ZHNDAi126500E J φ0.6mm 500g (1roll) BK
ZHNDAi12801KE J φ1.0mm 1kg (1roll) BM
LFa
Indicates lead-free solder of tin, silver and copper.
LF a/a
Indicates lead-free solder of tin, silver and copper.

LC-32DH57E-BK/RU-BK/S-BK
iii
End of life disposal
End of life disposal
Attention: Your
product is marked
with this symbol.
It means that used
electrical and
electronic products
should not be
mixed with general
household waste.
There is a separate
collection system for
these products.
A. Information on Disposal for Users (private households)
1. In the European Union
Attention: If you want to dispose of this equipment, please do not use the ordinary dust bin!
Used electrical and electronic equipment must be treated separately and in accordance with legislation that
requires proper treatment, recovery and recycling of used electrical and electronic equipment.
Following the implementation by member states, private households within the EU states may return their
used electrical and electronic equipment to designated collection facilities free of charge*. In some countries*
your local retailer may also take back your old product free of charge if you purchase a similar new one.
*) Please contact your local authority for further details.
If your used electrical or electronic equipment has batteries or accumulators, please dispose of these
separately beforehand according to local requirements.
By disposing of this product correctly you will help ensure that the waste undergoes the necessary treatment,
recovery and recycling and thus prevent potential negative effects on the environment and human health
which could otherwise arise due to inappropriate waste handling.
2. In other Countries outside the EU
If you wish to discard this product, please contact your local authorities and ask for the correct method of
disposal.
For Switzerland: Used electrical or electronic equipment can be returned free of charge to the dealer, even if
you don’t purchase a new product. Further collection facilities are listed on the homepage of www.swico.ch
or www.sens.ch.
B. Information on Disposal for Business Users
1. In the European Union
If the product is used for business purposes and you want to discard it:
Please contact your SHARP dealer who will inform you about the take-back of the product. You might be
charged for the costs arising from take-back and recycling. Small products (and small amounts) might be
taken back by your local collection facilities.
For Spain: Please contact the established collection system or your local authority for take-back of your used
products.
2. In other Countries outside the EU
If you wish to discard of this product, please contact your local authorities and ask for the correct method of
disposal.
The battery supplied with this product contains traces of Lead.
For EU: The crossed-out wheeled bin implies that used batteries should not be put to the general household
waste! There is a separate collection system for used batteries, to allow proper treatment and recycling in
accordance with legislation. Please contact your local authority for details on the collection and recycling
schemes.
For Switzerland: The used battery is to be returned to the selling point.
For other non-EU countries: Please contact your local authority for correct method of disposal of the used
battery.

LC-32DH57E-BK/RU-BK/S-BK
1 – 1
LC-32DH57E-BK Service Manual
CHAPTER 1. OPERATION MANUAL
[1] SPECIFICATIONS
Item LCDCOLOURTV(32"), LC-32DH57E, LC-32DH57RU, LC-32DH57S
LCD panel Advanced Super View & BLACK TFT LCD (32")
Resolution 1,049,680 pixels (1,366 x 768)
Video Colour System PAL/SECAM/NTSC 3.58/NTSC 4.43/PAL 60
TV Function
TV-Standard
Analogue CCIR (B/G, I, D/K, L/L’)
Digital DVB-T (2K/8K OFDM)
Receiving Channel
VHF/UHF IR A ch_E69 ch (Digital), E2_E69 ch, F2_F10 ch, I21_I69 ch, IR A_IR J ch
CATV Hyper-band, S1_S41 ch
TV-Tuning System Auto Preset 999 ch (non-Nordic [DTV]), Auto Preset 9999 ch (Nordic [DTV]), Auto Preset 99 ch
(ATV), Auto Label, Auto Sort
STEREO/BILINGUAL NICAM/A2
Viewing angles 176 ° (H), 176 ° (V)
Audio amplifier 10 W x 2
Speaker (35 mm x 100 mm) x 2
Terminals
Antenna UHF/VHF 75
Ω Din type (Analogue & Digital)
RS-232C D-Sub 9 pin male connector
EXT 1 SCART (AV input, Y/C input, RGB input, TV output)
EXT 2 SCART (AV input/monitor output, Y/C input)
EXT 3 COMPONENT IN (Y/P
B (C B )/P R (C R ), RCA pin (AUDIO R/L))
EXT 4 15 pin mini D-sub
HDMI 1 (EXT 5) HDMI
HDMI 2 (EXT 6) HDMI
HDMI 3 (EXT 7) HDMI
EXT 8 RCA pin (AV input)
SERVICE USB
HDMI 2/PC AUDIO (R/L) Ø 3.5 mm jack*
DIGITAL AUDIO OUTPUT Optical Digital audio output
C. I. (Common Interface) EN50221, R206001
OUTPUT RCA pin (AUDIO R/L)
Headphones Ø 3.5 mm jack (Audio output)
OSD language
Czech, Danish, Dutch, English, Estonian, Finnish, French, German, Greek, Hungarian, Italian,
Latvian, Lithuanian, Norwegian, Polish, Portuguese, Russian, Slovak, Slovene, Spanish, Swedish,
Turkish, Ukrainian
Power Requirement AC 220-240 V, 50 Hz
Power Consumption (Method IEC62087)
90 W (0.6 W Standby)
Weight 10.5 kg (Without stand), 11.5 kg (With stand)
Operating temperature 0°Cto+40°C
The HDMI 2 and EXT 4 terminals can both use the same audio input terminal.
As a part of our policy of continuous improvement, SHARP reserves the right to make design and specification changes for product
improvement without prior notice. The performance specification figures indicated are nominal values of production units. There may be
some deviations from these values in individual units.
NOTE
Refer to the inside back cover for dimensional drawings.
*
•
•
Optional accessory
The listed optional accessory is available for this LCD
colour TV. Please purchase them at your nearest shop.
Additional optional accessories may be available in the near
future. When purchasing, please read the newest catalogue for
compatibility and check the availability.
•
No. Part name Part number
1Wall mount bracket (LC-
32DH57E, LC-32DH57RU,
LC-32DH57S)
AN-37AG5