Sharp Aquos LC-42BT10U 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.
OUTLINE AND DIFFERENCES FROM BASE MODEL
OUTLINE.................................................................... i
LIST OF CHANGED PARTS ...................................... i
SAFETY PRECAUTION
IMPORTANT SERVICE SAFETY
PRECAUTION.......................................................... iv
PRECAUTIONS A PRENDRE LORS DE LA
REPARATION ........................................................... v
PRECAUTIONS FOR USING LEAD-FREE
SOLDER .................................................................. vi
PRECAUTIONS IN SERVICING THE HDCP-
KEY ROM.................................................................vii
CHAPTER 1. SPECIFICATIONS
[1] SPECIFICATIONS .................................................1-1
CHAPTER 2. OPERATION MANUAL
[1] OPERATION MANUAL ..........................................2-1
CHAPTER 3. DIMENSIONS
[1] DIMENSIONS ........................................................3-1
CHAPTER 4. REMOVING OF MAJOR PARTS
[1] REMOVING OF MAJOR PARTS ...........................4-1
CHAPTER 5. OVERALL WIRING/BLOCK DIAGRAM
[1] OVERALL WIRING DIAGRAM ..............................5-1
[2] SYSTEM BLOCK DIAGRAM .................................5-3
CHAPTER 6. SCHEMATIC DIAGRAM
[1] DESCRIPTION OF SCHEMATIC DIAGRAM .........6-1
[2] TERMINAL Unit......................................................6-2
Parts Guide
TopPage
CONTENTS
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.
LC-42BT10U
LC-42BT10U
MODEL
LCD COLOR TELEVISION
No. S57J9LC42BT10
OUTLINE
This model is based on the LC-42D72U and is changed some parts. This Service Manual covers the modifications
alone. For the other points, refer to the LC-42D72U (No. S17B9LC42D72U) Service Manual.

LC-42BT10U
i
LC-42BT10U Service Manual
OUTLINE AND DIFFERENCES FROM BASE MODEL
OUTLINE
This model is based on the LC-42D72U and is changed some parts. This Service Manual covers the modifications
alone. For the other points, refer to the LC-42D72U (No. S17B9LC42D72U) Service Manual.
LIST OF CHANGED PARTS
Ref. No. Description LC-42D72U LC-42BT10U Note
PRINTED WIRING BOARD ASSEMBLIES
R/C, LED Unit DUNTKD909FM02 ←—
KEY Unit DUNTKD910FM02 ←—
MAIN Unit DUNTKD934FM10 ←Some parts changed
TERMINAL Unit DUNTKD935FM11 DUNTKD935FM12 Some parts changed
POWER Unit RDENCA184WJQZ ←—
LCD PANEL
42” LCD Panel Module Unit R1LK420D3LZ10W ←—
MAIN Unit
C1118 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C1132 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C1431 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C1447 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C1478 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C1483 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C1485 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C1513 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C1514 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C1517 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C1518 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C1523 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C1532 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C1534 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C1551 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C1553 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C1556 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C1566 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C1575 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C1577 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C1585 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C1601 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C1602 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C1608 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C1633 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C1634 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C2001 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C2231 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C2233 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C2234 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C3310 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C3320 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C3327 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C3328 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C3329 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C3339 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C3344 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C3348 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C3351 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C3360 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C3370 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change

LC-42BT10U
ii
C3385 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C3396 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C3398 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C3403 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C3405 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C3408 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C3413 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C3415 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C3426 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C3502 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C3513 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C3520 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C3531 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C8607 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C8611 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C8613 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C8671 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C8672 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C8673 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C8806 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C8807 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C9610 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C9616 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C9617 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C9619 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C9620 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C9621 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C9622 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C9623 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C9635 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C9638 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C9647 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C9649 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C9652 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C9653 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C9654 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C9655 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C9707 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C9712 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
C9717 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change
IC1508 IC, Sil9013CLU VHiSii9011L-1Q VHiSii9013L-1Q Change
R1175 Resistor, 0 1/16W Metal Oxide — VRS-CZ1JF000JY Addition
R1176 Resistor, 0 1/16W Metal Oxide — VRS-CZ1JF000JY Addition
R3340 Resistor, 680 1/16W Metal Oxide VRK-CD1JJ681JY VRS-CK1JF681JY Change
R3341 Resistor, 680 1/16W Metal Oxide VRK-CD1JJ681JY VRS-CK1JF681JY Change
R3342 Resistor, 10k 1/16W Metal Oxide VRK-CD1JJ103JY VRS-CK1JF103JY Change
R3343 Resistor, 10k 1/16W Metal Oxide VRK-CD1JJ103JY VRS-CK1JF103JY Change
R3344 Resistor, 10k 1/16W Metal Oxide VRK-CD1JJ103JY VRS-CK1JF103JY Change
R3357 Resistor, 10k 1/16W Metal Oxide VRK-CD1JJ103JY VRS-CK1JF103JY Change
R3358 Resistor, 10k 1/16W Metal Oxide VRK-CD1JJ103JY VRS-CK1JF103JY Change
R3359 Resistor, 10k 1/16W Metal Oxide VRK-CD1JJ103JY VRS-CK1JF103JY Change
R3507 Resistor, 33 1/16W Metal Oxide VRK-CD1JJ330JY VRS-CK1JF330JY Change
R3509 Resistor, 33 1/16W Metal Oxide VRK-CD1JJ330JY VRS-CK1JF330JY Change
R3511 Resistor, 68 1/16W Metal Oxide VRK-CD1JJ680JY VRS-CK1JF680JY Change
R3518 Resistor, 82 1/16W Metal Oxide VRK-CD1JJ820JY VRS-CK1JF820JY Change
R3520 Resistor, 82 1/16W Metal Oxide VRK-CD1JJ820JY VRS-CK1JF820JY Change
R3524 Resistor, 33 1/16W Metal Oxide VRK-CD1JJ330JY VRS-CK1JF330JY Change
R3526 Resistor, 33 1/16W Metal Oxide VRK-CD1JJ330JY VRS-CK1JF330JY Change
R3533 Resistor, 82 1/16W Metal Oxide VRK-CD1JJ820JY VRS-CK1JF820JY Change
R3535 Resistor, 82 1/16W Metal Oxide VRK-CD1JJ820JY VRS-CK1JF820JY Change
R3540 Resistor, 33 1/16W Metal Oxide VRK-CD1JJ330JY VRS-CK1JF330JY Change
R3542 Resistor, 33 1/16W Metal Oxide VRK-CD1JJ330JY VRS-CK1JF330JY Change
R3548 Resistor, 82 1/16W Metal Oxide VRK-CD1JJ820JY VRS-CK1JF820JY Change
R3550 Resistor, 82 1/16W Metal Oxide VRK-CD1JJ820JY VRS-CK1JF820JY Change
Ref. No. Description LC-42D72U LC-42BT10U Note

LC-42BT10U
iii
R3554 Resistor, 33 1/16W Metal Oxide VRK-CD1JJ330JY VRS-CK1JF330JY Change
R3555 Resistor, 33 1/16W Metal Oxide VRK-CD1JJ330JY VRS-CK1JF330JY Change
R3563 Resistor, 82 1/16W Metal Oxide VRK-CD1JJ820JY VRS-CK1JF820JY Change
R3565 Resistor, 82 1/16W Metal Oxide VRK-CD1JJ820JY VRS-CK1JF820JY Change
R8101 Resistor, 3.9k 1/16W Metal Oxide VRK-CD1JJ392JY VRS-CK1JF392JY Change
R8102 Resistor, 3.9k 1/16W Metal Oxide VRK-CD1JJ392JY VRS-CK1JF392JY Change
R8103 Resistor, 3.9k 1/16W Metal Oxide VRK-CD1JJ392JY VRS-CK1JF392JY Change
R8107 Resistor, 3.9k 1/16W Metal Oxide VRK-CD1JJ392JY VRS-CK1JF392JY Change
R8108 Resistor, 3.9k 1/16W Metal Oxide VRK-CD1JJ392JY VRS-CK1JF392JY Change
R8109 Resistor, 3.9k 1/16W Metal Oxide VRK-CD1JJ392JY VRS-CK1JF392JY Change
R8112 Resistor, 47 1/16W Metal Oxide VRK-CD1JJ470JY VRS-CK1JF470JY Change
R8122 Resistor, 47 1/16W Metal Oxide VRK-CD1JJ470JY VRS-CK1JF470JY Change
R8123 Resistor, 47 1/16W Metal Oxide VRK-CD1JJ470JY VRS-CK1JF470JY Change
R8124 Resistor, 47 1/16W Metal Oxide VRK-CD1JJ470JY VRS-CK1JF470JY Change
R8125 Resistor, 47 1/16W Metal Oxide VRK-CD1JJ470JY VRS-CK1JF470JY Change
R8137 Resistor, 10k 1/16W Metal Oxide VRK-CD1JJ103JY VRS-CK1JF103JY Change
R8148 Resistor, 68 1/16W Metal Oxide VRK-CD1JJ680JY VRS-CK1JF680JY Change
R8161 Resistor, 10k 1/16W Metal Oxide VRK-CD1JJ103JY VRS-CK1JF103JY Change
R8163 Resistor, 68 1/16W Metal Oxide VRK-CD1JJ680JY VRS-CK1JF680JY Change
R8301 Resistor, 68 1/16W Metal Oxide VRK-CD1JJ680JY VRS-CK1JF680JY Change
R8309 Resistor, 22 1/16W Metal Oxide VRK-CD1JJ220JY VRS-CK1JF220JY Change
R8318 Resistor, 68 1/16W Metal Oxide VRK-CD1JJ680JY VRS-CK1JF680JY Change
R8324 Resistor, 22 1/16W Metal Oxide VRK-CD1JJ220JY VRS-CK1JF220JY Change
R8325 Resistor, 22 1/16W Metal Oxide VRK-CD1JJ220JY VRS-CK1JF220JY Change
R8326 Resistor, 22 1/16W Metal Oxide VRK-CD1JJ220JY VRS-CK1JF220JY Change
R8327 Resistor, 22 1/16W Metal Oxide VRK-CD1JJ220JY VRS-CK1JF220JY Change
R8328 Resistor, 22 1/16W Metal Oxide VRK-CD1JJ220JY VRS-CK1JF220JY Change
R8329 Resistor, 22 1/16W Metal Oxide VRK-CD1JJ220JY VRS-CK1JF220JY Change
R8330 Resistor, 22 1/16W Metal Oxide VRK-CD1JJ220JY VRS-CK1JF220JY Change
R8331 Resistor, 22 1/16W Metal Oxide VRK-CD1JJ220JY VRS-CK1JF220JY Change
R8333 Resistor, 150 1/16W Metal Oxide VRK-CD1JJ151JY VRS-CK1JF151JY Change
R8334 Resistor, 150 1/16W Metal Oxide VRK-CD1JJ151JY VRS-CK1JF151JY Change
R8335 Resistor, 150 1/16W Metal Oxide VRK-CD1JJ151JY VRS-CK1JF151JY Change
R8336 Resistor, 150 1/16W Metal Oxide VRK-CD1JJ151JY VRS-CK1JF151JY Change
R8337 Resistor, 150 1/16W Metal Oxide VRK-CD1JJ151JY VRS-CK1JF151JY Change
R8338 Resistor, 150 1/16W Metal Oxide VRK-CD1JJ151JY VRS-CK1JF151JY Change
R8339 Resistor, 150 1/16W Metal Oxide VRK-CD1JJ151JY VRS-CK1JF151JY Change
R8340 Resistor, 150 1/16W Metal Oxide VRK-CD1JJ151JY VRS-CK1JF151JY Change
R8342 Resistor, 22 1/16W Metal Oxide VRK-CD1JJ220JY VRS-CK1JF220JY Change
R8343 Resistor, 22 1/16W Metal Oxide VRK-CD1JJ220JY VRS-CK1JF220JY Change
R8344 Resistor, 22 1/16W Metal Oxide VRK-CD1JJ220JY VRS-CK1JF220JY Change
R8345 Resistor, 22 1/16W Metal Oxide VRK-CD1JJ220JY VRS-CK1JF220JY Change
R8346 Resistor, 22 1/16W Metal Oxide VRK-CD1JJ220JY VRS-CK1JF220JY Change
R8347 Resistor, 22 1/16W Metal Oxide VRK-CD1JJ220JY VRS-CK1JF220JY Change
R8348 Resistor, 22 1/16W Metal Oxide VRK-CD1JJ220JY VRS-CK1JF220JY Change
R8349 Resistor, 22 1/16W Metal Oxide VRK-CD1JJ220JY VRS-CK1JF220JY Change
R8467 Resistor, 47 1/16W Metal Oxide VRK-CD1JJ470JY VRS-CK1JF470JY Change
R8468 Resistor, 47 1/16W Metal Oxide VRK-CD1JJ470JY VRS-CK1JF470JY Change
R8709 Resistor, 47 1/16W Metal Oxide VRK-CD1JJ470JY VRS-CK1JF470JY Change
R9116 Resistor, 47 1/16W Metal Oxide VRK-CD1JJ470JY VRS-CK1JF470JY Change
R9207 Resistor, 10k 1/16W Metal Oxide VRK-CD1JJ103JY VRS-CK1JF103JY Change
R9208 Resistor, 10k 1/16W Metal Oxide VRK-CD1JJ103JY VRS-CK1JF103JY Change
R9301 Resistor, 10k 1/16W Metal Oxide VRK-CD1JJ103JY VRS-CK1JF103JY Change
R9302 Resistor, 10k 1/16W Metal Oxide VRK-CD1JJ103JY VRS-CK1JF103JY Change
TERMINAL Unit
Please refer to a Parts list
CABINET AND MECHANICAL PARTS
Please refer to a Parts list
PACKING PARTS AND ACCESSORIES
Please refer to a Parts list
Ref. No. Description LC-42D72U LC-42BT10U Note

LC-42BT10U
iv
LC-42BT10U 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 120 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 0.75 Vrms (this corresponds to 0.5 mA rms 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.
F701 (250V 8A), F702 (250V 1A)
F4702 (250V 4A),
F4701/F4703 (250V 3A ~ 127 )
DVM
AC SCALE
1.5k ohm
10W
TO EXPOSED
METAL PARTS
CONNECT TO
KNOWN EARTH
GROUND
0.15 µ F
TEST PROBE

LC-42BT10U
v
PRECAUTIONS A PRENDRE LORS DE LA REPARATION
De nombreuses pièces, électriques et mécaniques, dans les télévi-
seur ACL présentent des caractéristiques spéciales relatives à la sé-
curité, qui ne sont souvent pas évidentes à vue. Le degré de protec-
tion ne peut pas être nécessairement augmentée en utilisant des
pièces de remplacement étalonnées pour haute tension, puissance,
etc.
Les pièces de remplacement qui présentent ces caractéristiques sont
identifiées dans ce manuel; les pièces électriques qui présentent ces
particularités sont identifiées par la marque " " et hachurées dans la
liste des pièces de remplacement et les diagrammes schématiques.
Pour assurer la protection, ces pièces doivent être identiques à celles
utilisées dans le circuit d'origine. L'utilisation de pièces qui n'ont pas
les mêmes caractéristiques que les pièces recommandées par l'usine,
indiquées dans ce manuel, peut provoquer des électrocutions, incen-
dies, radiations X ou autres accidents.
AVERTISSEMENT
1.
2.
3.
4.
5.
•
•
•
•
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
Ne peut effectuer la réparation qu' un technicien spécialisé qui s'est parfaitement accoutumé à toute vérification de sécurité et aux
conseils suivants.
N'entreprendre aucune modification de tout circuit. C'est danger-
eux.
Débrancher le récepteur avant toute réparation.
Inspecter tous les faisceaux de câbles pour s'assurer que les fils
ne soient pas pincés ou qu'un outil ne soit pas placé entre le châs-
sis et les autres pièces métalliques du récepteur.
Inspecter tous les dispositifs de protection comme les boutons de
commande non-métalliques, les isolants, le dos du coffret, les cou-
vercles ou blindages de réglage et de compartiment, les réseaux
de résistancecapacité, les isolateurs mécaniques, etc.
S'assurer qu'il n'y ait pas de danger d'électrocution en vérifiant la
fuite de courant, de la facon suivante:
Brancher le cordon d'alimentation directem-ent à une prise de cou-
rant de 120V. (Ne pas utiliser de transformateur d'isolation pour
cet essai).
A l'aide de deux fils à pinces, brancher une résistance de 1.5 kΩ
10 watts en parallèle avec un condensateur de 0.15µF en série
avec toutes les pièces métalliques exposées du coffret et une terre
connue comme une conduite électrique ou une prise de terre
branchée à la terre.
Utiliser un voltmètre CA d'une sensibilité d'au moins 5000Ω/V pour
mesurer la chute de tension en travers de la résistance.
Toucher avec la sonde d'essai les pièces métalliques exposées qui
présentent une voie de retour au châssis (antenne, coffret métalli-
que, tête des vis, arbres de commande et des boutons, écusson,
etc.) et mesurer la chute de tension CA en-travers de la résistance.
Toutes les vérifications doivent être refaites après avoir inversé la
fiche du cordon d'alimentation. (Si nécessaire, une prise
d'adpatation non polarisée peut être utilisée dans le but de termin-
er ces vérifications.)
La tension de pointe mesurèe ne doit pas dépasser 0.75V (corre-
spondante au courant CA de pointe de 0.5mA).
Dans le cas contraire, il y a une possibilité de choc électrique qui
doit être supprimée avant de rendre le récepteur au client.
PRECAUTION: POUR LA PROTECTION CON-
TINUE CONTRE LES RISQUES D'INCENDIE,
REMPLACER LE FUSIBLE
F701 (250V 8A), F702 (250V 1A)
F4702 (250V 4A),
F4701/F4703 (250V 3A ~ 127 )
VERIFICATIONS CONTRE L'INCEN-DIE ET LE
CHOC ELECTRIQUE
Avant de rendre le récepteur à l'utilisateur, effectuer les vérifica-
tions suivantes.
DVM
ECHELLE CA
1.5k ohm
10W
0.15
µ F
SONDE D'ESSAI
AUX PIECES
METALLIQUES
EXPOSEES
BRANCHER A UNE
TERRE CONNUE
AVIS POUR LA SECURITE

LC-42BT10U
vi
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
Indicates lead-free solder of tin, silver and copper. Indicates lead-free solder of tin, silver and copper.
PARTS CODE PRICE
RANK
PART
DELIVERY DESCRIPTION
ZHNDAi123250E BL J φ0.3mm 250g (1roll)
ZHNDAi126500E BK J φ0.6mm 500g (1roll)
ZHNDAi12801KE BM J φ1.0mm 1kg (1roll)

LC-42BT10U
vii
PRECAUTIONS IN SERVICING THE HDCP-KEY ROM
The HDCP-KEY ROM shall be protected and managed for its information inside. In servicing this ROM, therefore, take the following information pro-
tection/management measures.
1) When disposing of the component parts and PWBs, destruct the IC itself in a proper way.
(For repairing or replacing the component parts and PWBs as well as clearing those in stock)
2) In storing the component parts, protect and manage them against theft and disclosure.
(For storing the service parts, service units, etc.)
Applied part: HDCP-KEY ROM
IC8451 RH-IXB963WJQZQ (updated ROM)

LC-42BT10U
1 – 1
LC-42BT10U Service Manual
CHAPTER 1. SPECIFICATIONS
[1] SPECIFICATIONS
Digital cable *
1
(64/256 QAM)
1-135ch (non-scrambled channel only)
LCD panel
Number of dots
TV
Function
TV-standard (CCIR)
Receiving
Channel
VHF/UHF
CATV
Digital Terrestrial
Broadcast (8VSB)
Audio multiplex
Audio out
Terminals Rear INPUT 1
INPUT 2
INPUT 3
INPUT 4
INPUT 5
6,220,800 dots (1920 1080 3 dots)
American TV Standard ATSC/NTSC System
VHF 2-13ch, UHF 14-69ch
1-135ch (non-scrambled channel only)
2-69ch
BTSC System
10W 2
AV in, COMPONENT in
AV in, COMPONENT in
S-VIDEO in, AV in
Audio in, HDMI in with HDCP
HDMI in with HDCP
Item Model: LC-42BT10U
42" Advanced Super View & BLACK TFT LCD
(Actual screen size 42 1/64" measured diagonally)
*
1
Emergency alert messages via Cable are unreceivable.
*
2
The dimensional drawings are shown on the inside back cover.
As part of 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.
ANTENNA
DIGITAL AUDIO OUTPUT
RS-232C
OSD language
Power Requirement
Power Consumption
Weight
Dimension*
2
(W H D)
Operating temperature
75 Unbalance, F Type
1 for Analog (VHF/UHF/CATV) and Digital (AIR/CABLE)
Optical Digital audio output 1 (PCM/Dolby Digital)
9-pin D-sub male connector
English/French/Spanish
AC120V,60Hz
32°F to 104°F (0°C to 40°C)
247 W (0.7 W Standby with AC 120V)
INPUT 6 Audio in, DVI-I in with HDCP
TV only 62.8 lbs./28.5 kg
TV only 40
19
/
32
26
37
/
64
5
9
/
32
inch
OUTPUT Audio out







++ +

LC-42BT10U
2 – 1
LC-42BT10U Service Manual
CHAPTER 2. OPERATION MANUAL
[1] OPERATION MANUAL
Part names
TV (Front)
OPC indicator
POWER indicator
OPC sensor*
Remote control sensor
NOTE
*OPC: Optical Picture Control
SLEEP indicator
TV (Rear/Top)
POWER button
Channel buttons
(CH /)
Volume
buttons
(VOL /)
INPUT button
HDMI terminal (INPUT 4)
INPUT 3 terminals
AUDIO OUTPUT terminals
HDMI terminal (INPUT 5)
DIGITAL AUDIO OUTPUT terminal
Antenna/Cable in
INPUT 1 terminals
AC INPUT terminal
AUDIO terminals (INPUT 4)
INPUT 2 terminals
DVI-I terminal (INPUT 6)
AUDIO terminal (INPUT 6)
RS-232C terminal

LC-42BT10U
2 – 2
3
2
114
5
6
4
8
17
15
16
18
19
7
20
10
9
21
11 23
24
25
12
13 27
22
26
Part names
1 TV POWER: Switch the TV power on or enters standby.
2 DISPLAY: Display the channel information.
3 SOURCE POWER: Turns the power of the external
equipment on and off.
4 External equipment operational buttons: Operate the
external equipment.
50
_9: Set the channel.
6(DOT):
7INPUT:Select a TV input source. (TV, INPUT 1, INPUT 2,
INPUT3,INPUT4,INPUT5,INPUT6)
8VOL/:Set the volume.
9 SURROUND: Select Surround settings.
10 FREEZE: Set the still image. Press again to return to
normal screen.
11 EXIT: Turn off the menu screen.
12 SLEEP: Set the sleep timer.
13 AUDIO: Selects the MTS/SAP or the audio mode during
multi-channel audio broadcasts.
14 FUNCTION: Switches the remote control for TV, CBL/
SAT, VCR, DVD and AUDIO operation. Indicator lights up
for the current mode.
* To enter the code registration mode, you need to press
FUNCTION and DISPLAY at the same time.
15 LIGHT : When pressed all buttons on the remote
control unit will light. The lighting will turn off if no
operations are performed within about 5 seconds. This
button is used for performing operations in low-light
situations.
16 VIEW MODE: Select the screen size.
17 ENT: Jumps to a channel after selecting with the 0_9
buttons.
18 FLASHBACK:Return to the previous channel or external
input mode.
19 CH / : Select the channel.
20 MUTE: Mute the sound.
21 MENU: Display the menu screen.
22 ////ENTER: Select a desired item on the screen.
23 RETURN: Return to the previous menu screen.
24 FAVORITE CH
A, B, C, D: Select 4 preset favorite channels in 4 different
categories.
While watching, you can toggle the selected channels by
pressing A, B, C and D.
25 FAVORITE: Set the favorite channels.
26 CC: Display captions from a closed-caption source.
27 AV MODE: Select an audio or video setting. (When the
input source is TV, INPUT 1, 2 or 3: STANDARD, MOVIE,
GAME, USER, DYNAMIC (Fixed), DYNAMIC. When the
input source is INPUT 4, 5 or 6: STANDARD, MOVIE,
GAME, PC, USER, DYNAMIC (Fixed), DYNAMIC)
Remote control unit
NOTE
When using the remote control unit, point it at the TV.

LC-42BT10U
2 – 3
QUICK REFERENCE
Remove the hole cover from
the backing.
Firmly affix the hole cover to the
cabinet hole on the bottom of the
TV.
12
Affixing the hole cover
This TV type is designed to be hung on a wall. Affix the supplied hole cover to the TV cabinet hole by following the
instructions below. Place the TV on a soft cushion.
3
0/5/10/15/20°
163/64 ( 5)/0/
163/64 (5)
canbemoved1
63/64 (5) up or down
Unit : inch (cm)
For AN-52AG1
AN-37AG2 AN-52AG1
Setting the TV on the wall
CAUTION
This TV should be mounted on the wall only with the AN-37AG2/AN-52AG1 (SHARP) wall mount bracket. The use
of other wall mount brackets may result in an unstable installation and may cause serious injuries.
Installing the TV requires special skill that should only be performed by qualified service personnel. Customers
should not attempt to do the work themselves. SHARP bears no responsibility for improper mounting or
mounting that results in accident or injury.
Using a SHARP recommended bracket to mount the TV
You can ask a qualified service professional about using a SHARP recommended AN-37AG2/AN-52AG1 bracket to mount
the TV to the wall.
Carefully read the instructions that come with the bracket before beginning work.
NOTE
Detach the cable clamps on the rear of the TV when using the SHARP recommended mount bracket.
Hanging on the wall
AN-37AG2/AN-52AG1 wall mount bracket.
(See the bracket instructions for details.)
Vertical mounting Angular mounting
About setting the TV angle and height adjustment
0° or 5°
+
_
+
_

LC-42BT10U
2 – 4
Troubleshooting
Possible Solution
Is the volume too low?
Is "Variable" selected in "Output Select"?
Have you pressed MUTE on the remote control unit?
Cautions regarding use in high and low temperature environments
Appendix
Problem
No power
Unit cannot be operated.
Remote control unit does not
operate.
Picture is cut off/with sidebar
screen.
Strange color, light color, or color
misalignment
Power is suddenly turned off.
No picture
No sound
Check if you pressed TV POWER on the remote control unit.
If the indicator on the TV does not light up, press POWER on the TV.
Is the AC cord disconnected?
Has the power been turned on?
External influences such as lightning, static electricity, may cause improper
operation. In this case, operate the unit after first turning on the power of the TV or
unplugging the AC cord and replugging it in after 1 or 2 minutes.
Is the FUNCTION set correctly? Set it to the TV setting position.
Are batteries inserted with polarity ( , ) aligned?
Are batteries worn out? (Replace with new batteries.)
Are you using it under strong or fluorescent lighting?
Is a fluorescent light illuminated near the remote control sensor?
Is the image position correct?
Are screen mode adjustments such as picture size made correctly?
Adjust the picture tone.
Is the room too bright? The picture may look dark in a room that is too bright.
Check the input signal setting.
Is the sleep timer set?
Check the power control settings.
The unit's internal temperature has increased. Remove any objects blocking vent
or clean.
Is connection to other components correct?
Is correct input signal source selected after connection?
Is the correct input selected?
Is picture adjustment correct?
Is "On" selected in "Audio Only"?
Is a non-compatible signal being input?
When the unit is used in a low temperature space (e.g. room, office), the picture may leave trails or appear slightly delayed.
This is not a malfunction, and the unit will recover when the temperature returns to normal.
Do not leave the unit in a hot or cold location. Also, do not leave the unit in a location exposed to direct sunlight or near a
heater, as this may cause the cabinet to deform and the Liquid Crystal panel to malfunction.
Storage temperature: 4°F to 140°F ( 20°C to 60°C)
Troubleshooting-Digital broadcasting
The error message about reception of broadcast
Failed to receive broadcast.
No broadcast now. E203 Check the broadcast time in the program guide.
The example of an error
message displayed on a screen Error code
E202
Possible Solution
Check the antenna cable. Check that the antenna is correctly
setup.
This is not a malfunction. This happens when the cabinet slightly expands and
contracts according to change in temperature. This does not affect the TV's
performance.
The TV sometimes makes a
cracking sound.
+_
+
__
+

LC-42BT10U
2 – 5
Preparation
NOTE
The HDMI terminals only support digital signal.
PC
It is necessary to set the PC format correctly to display XGA and WXGA signal.
PC with analog
RGB terminal
Connecting a PC
When connecting to a PC with an HDMI terminal. (INPUT 4 or 5)
HDMI cable
(commercially available)
PC compatibility chart
PC
31.5 kHz
31.5 kHz
37.9 kHz
37.5 kHz
35.1 kHz
37.9 kHz
48.1 kHz
46.9 kHz
48.4 kHz
56.5 kHz
60.0 kHz
47.7 kHz
64.0 kHz
640 x 480
720 x 400
VGA
800 x 600SVGA
XGA 1024 x 768
WXGA 1360 x 768
SXGA 1280 x 1024
70 Hz
60 Hz
72 Hz
75 Hz
56 Hz
60 Hz
72 Hz
75 Hz
60 Hz
70 Hz
75 Hz
60 Hz
60 Hz
O
O
O
O
O
O
O
O
O
O
O
O
64.0 kHzSXGA+* 1400 x 1050 60 Hz O
75.0 kHzUXGA* 1600 x 1200 60 Hz O
DDC is a registered trademark of Video Electronics Standards Association.
Power Management is a registered trademark of Sun Microsystems, Inc.
VGA and XGA are registered trademarks of International Business Machines Co., Inc.
PC Horizontal Frequency VESA StandardResolution Vertical Frequency
When connecting to a PC with a DVI terminal. (INPUT 6)
NOTE
If you are connecting the TV to a PC with a DVI terminal, use a DVI cable (commercially available) instead of a RGB/DVI
conversion cable.
RGB/DVI conversion
cable (commercially
available)
Ø 3.5 mm stereo
minijack cable
(commercially available)
* DVI input only.

LC-42BT10U
2 – 6
Picture
Setup
Audio
Option
Power Control
Digital Setup
Picture
Setup
Audio
Option
Power Control
Menu items for TV/INPUT 1/2/3 Menu items for HDMI/DVI
Basic adjustment settings
OPC
Backlight
Contrast
Brightness
Color
Tint
Sharpness
Advanced
Color Temp.
Black
Fine Motion
3D-Y/C
Monochrome
Film Mode
Range of OPC
Reset
Treble
Bass
Balance
Surround
Reset
No Signal Off
No Operation Off
OPC
Backlight
Contrast
Brightness
Color
Tint
Sharpness
Advanced
Color Temp.
Black
Fine Motion
Monochrome
Film Mode
Range of OPC
Reset
Treble
Bass
Balance
Surround
Reset
No Signal Off
No Operation Off
EZ Setup
CH Setup
Antenna Setup-DIGITAL
Input Skip
Input Label
Parental CTRL
Position
Language
Reset
Audio Only
Digital Noise Reduction
Input Select
Output Select
Color System
Caption Setup
Program Title Display
Favorite CH
Audio Setup
Input Skip
Input Signal
Auto Sync.
Input Label
Fine Sync.
Position
Language
Reset
Audio Only
Digital Noise Reduction
HDMI Setup
Input Select
Output Select
NOTE
Some menu items may not be displayed depending on the
selected input source.

LC-42BT10U
3 – 1
LC-42BT10U Service Manual
CHAPTER 3. DIMENSIONS
[1] DIMENSIONS
7
7
/
8
(200)
40
19
/
32
(1031)
36
47
/
64
(933.0)
16
37
/
64
(421)
20
23
/
32
(526.0)
5
9
/
32
(134)
26
37
/
64
(675)
7
7
/
8
(200)
3
23
/
64
(85)
Unit: inch/(mm)

LC-42BT10U
4 – 1
LC-42BT10U Service Manual
CHAPTER 4. REMOVING OF MAJOR PARTS
[1] REMOVING OF MAJOR PARTS
1. Remove the SD Card Cover.
2. Remove the Hole Cover.
3. Remove the 12 lock screws, 5 lock screws and detach the Rear Cabinet.
3
2
3
Rear Cabinet
Hole Cover
SD Card Cover
1

LC-42BT10U
4 – 2
4. Remove the 4 lock screws and detach the Chassis Fixing Angle.
5. Remove the 4 lock screws and detach the Center Angle (L) (R).
6. Remove the 2 lock screws and detach the Stand Assist Angle.
7. Remove the 2 lock screws and detach the Stand Assist Cover.
8. Remove the 4 lock screws and detach the Stand Fixing Angle.
9. Remove the 7 lock screws and detach the MAIN Shield.
9
5
5
8
6
4
4
7
Center Angle (L)
MAIN Shield
Center
Angle (R)
Stand Fixing Angle
Chassis Fixing Angle
Stand Assist Cover
Stand Assist Angle

LC-42BT10U
4 – 3
10.Disconnect all the connectors from all the PWBs.
11.Remove the Top Cover Ass’y.
Remove the 1 lock screw from the Top Cover Ass’y and detach the KEY Unit.
䬌䎮䎰䬍
䬌䎵䎤䬍
䬌䎳䎧䬍
䬌䎰䎤䬍
䬌䎵䎤䬍
䬌䎯䎹䬍
䬌䎮䎰䬍
䬌䎩䎦䬍䬌䎶䎤䬍
䬌䎳䎫䬍
䬌䎯䎥䬍
䬌䎯䎳䬍 䬌䎦䎱䎖䬍
䬌䎳䎧䬍
䬌䎳䎫䬍
䬌䎶䎳䬍
䬌䎯䎤䬍
䬌䎦䎱䎕䬍
䬌䎯䎤䬍
䬌䎯䎥䬍
11
10
10
10
Top Cover Ass'y
KEY Unit

LC-42BT10U
4 – 4
12.Remove the 7 lock screws and detach the Tray Chassis.
13.Remove the 2 lock screws, 3 lock screws, 2 lock screws, 2 lock screws and detach the Terminal Angle.
14.Remove the 7 lock screws and detach the POWER Unit.
15.Remove the 2 lock screws, 4 lock screws and detach the RS232C Angle and TERMINAL Unit.
16.Remove the 3 lock screws, 2 lock screws, 1 lock rivet and detach the MAIN PWB Radiator and MAIN Unit.
17.Remove the 1 lock rivet and detach the Earth Plate.
18.Remove the 2 lock screws and detach the Speaker (L) (R).
19.Remove the 2 lock screws and detach the R/C, LED Unit.
R/C, LED Unit
16
16
16 17
14
12
13
13
13
13
15
15
18 18
19
Speaker (R)
TERMINAL Unit
RS232C Angle
Tray Chassis
POWER Unit
MAIN Unit
MAIN PWB
Radiator
Terminal Angle
Earth
Plate
Speaker (L)