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.
CONTENTS
SAFETY PRECAUTION
IMPORTANT SERVICE SAFETY
PRECAUTION............................................................ i
PRECAUTIONS FOR USING LEAD-FREE
SOLDER ................................................................... ii
OUTLINE
MAJOR SERVICE PARTS ........................................iii
[2] SYSTEM BLOCK DIAGRAM .................................7-2
CHAPTER 8. PRINTED WIRING BOARD ASSEMBLIES
[1] MAIN Unit...............................................................8-1
[2] POWER SUB Unit..................................................8-3
[3] R/C, LED Unit.........................................................8-5
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.
LC-32L400M
LC-32L400M
SAFETY PRECAUTION
Service Manual
IMPORTANT SERVICE SAFETY PRECAUTION
Service work should be performed only by qualified service technicians who are thoroughly familiar with all safety checks and the
servicing guidelines which follow:
WARNING
1. For continued safety, no modification of any circuit should be
attempted.
2. Disconnect AC power before servicing.
BEFORE RETURNING THE RECEIVER (Fire &
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 0.74 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.
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 110-240 volt AC outlet.
• Using two clip leads, connect a 1.5k 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.
• 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.
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.
i
LC-32L400M
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:
Indicates lead-free solder of tin, silver and copper.Indicates lead-free solder of tin, silver and copper.
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 damage 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.
As a 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.
TV-StandardPAL: B/G, D/K, I SECAM: B/G, D/K, K/K
Receiving
Channel
TV-Tuning SystemAuto Preset 99 ch
STEREO/BILINGUALNICAM: B/G, I, D/K A2 stereo: B/G
INPUT 1
INPUT 2S-VIDEO in, VIDEO in, AUDIO in
INPUT 3VIDEO in, AUDIO in
INPUT 4AUDIO in, COMPONENT in (480I, 576I, 480P, 576P, 720P/50Hz, 720P/60Hz,
INPUT 5 (PC input)
RS-232C9 pin D-sub male connector
without stand
with stand
without stand10.0 kg
with stand11.0 kg
Model
VHF/UHF 44.25_863.25 MHz
CATVS1_S41ch (including Hyperband)
LC-32L400M
32" (800 mm) Advanced Super View & BLACK TFT LCD
1,049,088 pixels (1366768)
1
NTSC: M
5W2
95 cm 2pcs
UHF/VHF 75 DIN type
HDMI (HDMI input) (480I,576I, 480P, 576P, 720P/50Hz, 720P/60Hz, 1080I/50Hz,
1080I/60Hz), AUDIO in ( 3.5 mm jack)
1080I/50Hz, 1080I/60Hz)
15 pin mini D-sub, AUDIO in (common use with INPUT 1) (
10 SERVICE ONLY terminal**
11 INPUT 2 terminals
12 INPUT 3 terminals
13 INPUT 4 terminals
13
* The INPUT 1 and INPUT 5 terminals can both use the same audio input terminal. However, the proper item must be
selected in the "PC Audio Select" menu.
**Usually do not connect anything to this terminal as it is reserved only for service personnel.
The illustrations in this operation manual are for explanation purposes and may vary slightly from the actual operations.
5
2 – 1
Remote control unit
1
2
3
4
5
6
7
8
1(Mute)
PressMutes sound.
PressagainRestores sound.
Mute will be cancelled after 30 minutes. However,
the TV will not suddenly output loud sound as the
volume level will be set to 0 automatically. Increase
the volume level by pressing VOL
20_9
Set the channel.
TELETEXT mode: Set the page.
3(Flashback)
Pressto return to the previous selected channel
or external input mode.
4WIDE
Change the wide image mode.
5 VOL /VOL
Set the volume.
(VOL ) Increase the volume.
(VOL ) Decrease the volume.
6 FREEZE
Freeze a motion picture on the screen.
9
10
11
12
13
14
15
16
17
18
19
20
.
7 EXIT
Return to the default screen.
8 Colour (Red/Green/Yellow/Blue)
TELETEXT mode: Select a page.
9 POWER (STANDBY/ON)
To switch the power on and off.
10 DISPLAY
Display the channel or input information.
11 SLEEP
Set the Sleep timer.
0hr.30min.1hr.00min.
Off
2hr.30min.
12 AV MODE
Select an audio and video setting.
13 MPX
Select the sound multiplex mode.
14 TV/VIDEO (INPUT SOURCE)
Select an input source.
15 CH /CH
TV input mode: Select the channel.
(CH ) Increase the channel number.
(CH ) Decrease the channel number.
TELETEXT mode: Select the page.
16 PC
Directly select the PC terminal.
17 MENU
Display the menu screen.
18/ / /(Cursor)
Select a desired item on the setting screen.
ENTER
Execute a command.
19 RETURN
MENU mode: Return to the previous menu screen.
20(TELETEXT)
Select the TELETEXT mode. (all TV image, all TEXT image,
TV/TEXT image)
(Reveal hidden for TELETEXT)
TELETEXT mode: Display hidden characters.
(SUBTITLE for TELETEXT)
To turn the subtitles on and off.
(Hold)
TELETEXT mode: Stop updating Teletext pages automatically.
Pressagain to release the hold mode.
(Subpage)
Display the Teletext subpage directly when in Teletext mode.
(Top/Bottom/Full)
TELETEXT mode: Set the area of magnification.
1hr.30min.
2hr.00min.
LC-32L400M
Inserting the battery
Before using the TV for the first time, insert a "AA" size battery (supplied). When the battery become depleted
and the remote control fails to operate, replace the battery with new "AA" size battery.
Open the battery cover.
1
CAUTION
Battery (battery pack or batteries installed) shall not be exposed to excessive heat such as sunshine, fire or the like.
Insert the supplied "AA" size battery.
2
Place battery with their terminals corresponding to the
( ) and ( ) indications in the battery compartment.
Close the battery cover.
3
2 – 2
LC-32L400M
Attaching the stand
Before attaching (or detaching) the stand, unplug the AC cord from the AC outlet.
Before performing work spread cushioning over the base area to lay the TV on. This will prevent it from
being damaged.
1
2
3
To detach the stand, perform the steps in reverse
order.
Confirm the screws supplied with the TV.
Screws ( 4)
(usedinstep3)
Insert the stand base to the stand post on the
bottom of the TV. ( )
Insert and tighten the 4 screws into the 4
holes on the bottom of the stand base. ( )
NOTE
Soft cushion
Screw
Screw driver
2 – 3
LC-32L400M
CHAPTER 3. DIMENSIONS
[1] DIMENSIONS
LC-32L400M
Service Manual
Unit: mm
3 – 1
LC-32L400M
LC-32L400M
CHAPTER 4. REMOVING OF MAJOR PARTS
Service Manual
[1] REMOVING OF MAJOR PARTS
1. Removing of the Stand and Back Cover
1. Detach the Stand Hinge Cover [1].
2. Remove the 4 lock screws [2] and detach the Stand.
3. Remove the 1 lock screw [3], 1 lock screw [4], 1 lock screw [5], 6 lock screws [6] and detach the Back Cover.
Back Cover
5
6
4
3
2
Stand
1
Stand Hinge Cover
4 – 1
2. Disconnect the connectors
1. Disconnect the connectors from the MAIN Unit, POWER SUB Unit [1].
MAIN Unit
LC-32L400M
PA
1
SP
PI
1
RA
POWER SUB Unit
AC
4 – 2
LC-32L400M
3. Removing of the MAIN Unit and POWER SUB Unit
1. Remove the 2 lock shafts [1], 2 lock shafts [2], 2 lock screws [3] and detach the MAIN Unit.
2. Remove the 5 lock screws [4] and detach the POWER SUB Unit.
1
3
2
MAIN Unit
POWER SUB Unit
4 – 3
4
4. Removing of the Rear Cabinet
1. Remove the 7 lock screws [1] and detach the Rear Cabinet.
LC-32L400M
1
Rear Cabinet
4 – 4
LC-32L400M
5. Removing of the Speaker and R/C, LED Unit
1. Disconnect the connectors from the INVERTER Unit and LCD Panel Module [1].
2. Disconnect SP connectors [2]. Remove the 4 lock screws [3] and detach the Speaker, remove the 2 Molt Plane [3a].
3. Detach the R/C, LED Unit [4] and disconnect RA connector [5].
LCD Panel Module
LVDS
INVERTER Unit
4
RA
R/C, LED Unit
1
1
PI
5
3a
SP
2
3a
2
SP
Speaker
3
Speaker
3
4 – 5
6. Removing of the Top Bracket, Bottom Bracket and LCD Panel Module
1. Remove the 4 lock screws [1].
2. Remove the 4 lock screws [2] and detach the Top Bracket, Bottom Bracket.
3. Remove the 2 lock screws [3] and detach the LCD Panel Module.
1
2
Top Bracket
LC-32L400M
LCD Panel Module
3
3
Bottom Bracket
2
1
4 – 6
LC-32L400M
LC-32L400M
CHAPTER 5. ADJUSTMENT
Service Manual
[1] ADJUSTMENT PROCEDURE
1. Entering and cancel the adjustment process mode
While holding down the TV/VIDEO and Volume DOWN keys at the same time, plug in the AC cord to turn on the power. (“K123” standing for
inspection process mode is displayed on the middle right section of the screen.)
Press the Channel DOWN and Volume DOWN keys at the same time. (The adjustment process mode screen appears.)
To cancel it, turn off the power using the Power switch or remote control.
2. Remote controller key operation and description of display in adjustment process mode.
1Adjustment mode1) Press the test key at the test remote control.
*On double screen models, the tuner, composite signal and component signal adjustment are made for their single screen mode and double screen
mode as well.
3.1.2 Component 15K 50Hz signal adjustment (COMP-SD)
Set the luminance meter on
the center of the screen
For the details of white balance adjustment procedure, please refer to white balance
adjustment spec for current model.
1) Confirm the set condition.
2) Connect the luminance meter CA-210.
3) Through RS-232C command, adjustment mode screen is displayed.
2Auto Adjustment
performance
[command]
Adjustment Mode
KRSW0001
KKT10037
Setting
KYOF0001
OSDS0001
SBSL0016
Multi point adj. Mode
MSET0001
Point 2
LEV20204
WBI20204
MG2G****
MG2B****
MG2R****
Point 1
LEV10128
WBI10128
MG1G****
MG1B****
MG1R****
Write
MSET0003
[Adjustment Procedure]
1) Using the remote control, set the LCD TV to adjustment mode.
2) Set the specified gradation for point 2, fix the most faint colour to get reference
value, adjust others 2 colour to minus adjustment for reference value of point 2.
3) Set the specified gradation for point 1. Set G of point 1 to the default value [(2048xG
value of point 2/3264), with fractions rounded] and adjust RB to the reference value
of point 1.
4) Adjusted value is writing at [command] MSET0003, and then shut down the AC
power.
*Initial value at RGB 2 point : 3264
*Initial value at RGB 1 point : 2048
[Adjustment Value]
✩Specification data by engineering dept is set as reference.
[Reference value for adjustment reference]
Equipment: Luminance meter [Minolta CA-210]
Ref. : For inspection, set the LCD TV as below.
AV MODE: [DYNAMIC] (Reset)
Monochrome: ON
Aging Time: Minimum 60 minutes
4. Factory setting
AC power is plug off after shipment setting is done.
CAUTION: Do not plug on again after shipment setting is done. If do, please re-do the shipment setting. Do not off with remote control.
2) When Green background appears on screen and “K” mark disappears, setting is completed.
The followings are initialized to factory setting
1) User setting
2) Channel data (e. g. broadcast frequencies)
3) Manufacturer’s option settings
4) Password data
5) Setting values are set based on model destination
5 – 3
5. Software upgrading
1) Plug off the LCD TV.
2) Insert the USB device to the USB terminal at the LCD TV.
(Make sure that latest software is installed in the USB device)
3) Hold the LCD TV power key and plug on the LCD TV.
4) LCD TV is on and detecting the USB device.
USB device found
5) A few seconds later, the software upgrading will start automatically.
Do not power off
Chip programming
>>>>>>>>
LC-32L400M
6) Let the process running & entering verification.
Verifying
Verified
7) Software is successfully installed when the following appears at the end of the process.
Please re-boot the system
Update Finished
8) Plug off the LCD TV & plug on again as usual.
9) LCD TV is running with the latest software.
5 – 4
LC-32L400M
LC-32L400M
CHAPTER 6. TROUBLESHOOTING TABLE
Service Manual
[1] TROUBLESHOOTING TABLE
No power (front LED failure to light up) or no startup (front LED failure to turn from red to green)
Is the AC cord connector tightly connected to the set?NOReconnect the AC cord tightly and turn on the power again.
YES
Is the output voltage at pin (7), (8), (9) and (10) of P5201 (13.0V
line) as specified?
YES
Are the wire harnesses and other cables properly connected in
the set?
YES
Is there the AC_DET and PNL_ON signal input at pins (14) and
(1) of P5201?
NOReplace the power unit.
NOReconnect the wire harnesses and other cables properly in the
set.
NOCheck the AC_DET signal line PNL_ON signal line.
YES
Are the DC/DC converter outputs and the output voltages along
the control lines as specified?
1) B1.26V (IC9606)
2) D2.6V (IC9603)
3) STB+3.3V (IC9602)
4) D3.3V (IC9653)
5) B5V (IC9652)
NOCheck the DC/DC converters and the control lines. Replace
defective parts as required.
6 – 1
With [RF] signal input No video onscreen (1)
No video in the UHF/VHF reception
Is there IF output from the tuner pin(12) of TU1101 as specified?NOCheck TU1101 and its peripheral circuits.
YES
Is there VIF input at pin 57 & 58 of IC3301?NOCheck the circuit between TU1101 & IC3301.
YES
Are there the signal outputs of IC3301?NOCheck IC3301 and its peripheral circuit.
YES
Check LVDS cable, LCD controller (incl. panel) and their periph-
eral circuits.
With <Video> signal input No video onscreen (2)
LC-32L400M
No external input video onscreen <INPUT 2>
Is INPUT 2 selected on the input select menu screen?NOSelect INPUT 2 on the input select menu screen to pick up the
right input signal.
YES
Is there the video signal input at pin (33) of IC3301?NOCheck the line between pin (3) of J5510 and pin (33) of IC3301.
YES
Are there signal outputs of IC3301?NOCheck IC3301 and its peripheral circuits.
YES
Check LVDS cable, LCD controller (incl. panel) and their peripheral circuits.
6 – 2
LC-32L400M
With <Video> signal input No video onscreen (3)
No external input video onscreen <INPUT 3>
Is INPUT 3 selected on the input select menu screen?NOSelect INPUT 3 on the input select menu screen to pick up the
YES
Is there the video signal input at pin (35) of IC3301?NOCheck the line between pin (3) of J5508 and pin (35) of IC3301.
YES
Are there signal outputs of IC3301?NOCheck IC3301 and its peripheral circuits.
YES
Check LVDS cable, LCD controller (incl. panel) and their periph-
eral circuits.
With <S-video> signal input No video onscreen (4)
right input signal.
No external input video onscreen <INPUT 2>
Is INPUT 2 selected on the input select menu screen?NOSelect INPUT 2 on the input select menu screen to pick up the
right input signal.
YES
Are there the following signal inputs at the input terminals of
IC3301?
<S-video signal>
Are there the Y and C signal inputs at pins (30) and (29), respectively?
YES
Are there signal outputs of IC3301?NOCheck IC3301 and its peripheral circuits.
YES
Check LCD controller (incl. panel) and their peripheral circuits.
NO<S-video signal>
Check the line between pins (3), (4) of J5511 and pins (30)/(29)
of IC3301.
6 – 3
LC-32L400M
With <Component> signal input No video onscreen (5)
No external input video onscreen <INPUT 4>
Is INPUT 4 selected on the input select menu screen?NOSelect INPUT 4 on the input select menu screen to pick up the
YES
Are there the Y, Pb and Pr signal inputs at pins (15), (13) and
(17) of IC3301 respectively?
YES
Is input waveform of IC3301 normal?
Y=(15) pin, Pb=(13) pin, Pr=(17) pin
YES
Check LVDS cable, LCD controller (incl. panel) and their periph-
eral circuits.
With <HDMI> signal input No video onscreen (6)
NOCheck the line between pins (3)/(5)/(7) of J5509 and pins (15)/
NOCheck IC3301 and its peripheral circuits.
right input signal.
(13)/(17) of IC3301.
No external input video onscreen <INPUT 1>
Is INPUT 1 selected on the input select menu screen?NOSelect INPUT 1 on the input select menu screen to pick up the
right input signal.
YES
Are there the signal inputs from the HDMI (SC1501)
connector to the following input terminals of IC3301.
YES
Are there signal outputs of IC3301?NOCheck IC3301 and its peripheral circuits.
YES
Check LVDS cable, LCD controller (incl. panel) and their peripheral circuits.
NOCheck IC3301 and their peripheral circuits.
6 – 4
LC-32L400M
No audio heard (1)
No sound in the UHF/VHF reception.
Is the IF output from the tuner pin (12) of TU1101 as specified?NOCheck TU1101 and its peripheral circuits.
YES
Is there the I2S signal input at pins (180), (181) of IC3301?NOCheck IC3301 and its peripheral circuits.
YES
Is there L-ch audio signal input at pin(3) of IC2701?NOCheck connection between IC3301 and IC2701 and its
Is there R-ch audio signal input at pin(7) of IC2701?
YES
Is the L-ch audio signal output at pin(27), (28), (29) and (30) of IC2701
normal?
Is the R-ch audio signal output at pin(11), (12), (13) and (14) of IC2701
normal?
NOCheck IC2701 and its peripheral circuits.
peripheral circuits.
YES
Are the audio signal L-ch and R-ch output at (1)/(2) and (3)/(4) of
P2701 normal?
YES
Check speakers and their peripheral circuits.
NOCheck circuit between IC2701 & P2701.
6 – 5
LC-32L400M
No audio heard (2)
No external audio heard
<INPUT 2>
Is there the L-ch audio signal input from pin (5) of input terminal
J5510 to pin (77) of IC3301?
Is there the R-ch audio signal input from pin (7) of input terminal
J5510 to pin (78) of IC3301?
<INPUT 3>
Is there the L-ch audio signal input from pin (5) of input terminal
J5508 to pin (75) of IC3301?
Is there the R-ch audio signal input from pin (7) of input terminal
J5508 to pin (76) of IC3301?
<INPUT 4>
Is there the L-ch audio signal input from pin (2) of input terminal
J5503 to pin (72) of IC3301?
Is there the R-ch audio signal input from pin (4) of input terminal
J5503 to pin (73) of IC3301?
YES
Is there the I2S signal input at pin (180), (181) of IC3301?NOCheck IC3301 and its peripheral circuits.
YES
Is there L-ch audio signal input at pin(3) of IC2701?NOCheck connection between IC3301 and IC2701 and its periphIs there R-ch audio signal input at pin(7) of IC2701?
eral circuits.
YES
Is the L-ch audio signal output at pin(27), (28), (29) and (30) of
IC2701 normal?
Is the R-ch audio signal output at pin(11), (12), (13) and (14) of
IC2701 normal?
YES
Are the audio signal L-ch and R-ch output at (1)/(2) and (3)/(4) of
P2701 normal?
YES
Check speakers and their peripheral circuits.
NOCheck IC2701 and its peripheral circuits.
NOCheck circuit between IC2701 & P2701.
6 – 6
LC-32L400M
No audio heard (3)
No HDMI sound heard. <INPUT 1>
(*INPUT 1 is digital audio.)
Does the HDMI image appear onscreen?NORefer to “<INPUT 1> in No external input video onscreen
(HDMI)”.
YES
No audio output from INPUT 1.NOCheck the EDID.
YES
Are waveforms input in to the pins of IC3301 normally and I2S output from the pins (180), (181) normally?
YES
Is there L-ch audio signal input at pin(3) of IC2701?NOCheck connection between IC3301 and IC2701 and its periphIs there R-ch audio signal input at pin(7) of IC2701?
NOCheck peripheral circuits of IC3301.
eral circuits.
YES
Is the L-ch audio signal output at pin(27), (28), (29) and (30) of
IC2701 normal?
Is the R-ch audio signal output at pin(11), (12), (13) and (14) of
IC2701 normal?
YES
Are the audio signal L-ch and R-ch output at (1)/(2) and (3)/(4) of
P2701 normal?
YES
Check speakers and their peripheral circuits.
NOCheck IC2701 and its peripheral circuits.
NOCheck circuit between IC2701 & P2701.
6 – 7
LC-32L400M
No audio heard (4)
No sound from the HDMI sound input terminal.
(INPUT 1 analog audio)
YES
Is there the L-ch audio signal input from pin (2) of external input
terminal J506 (HDMI AUDIO IN) to pin (70) of IC3301?
Is there the R-ch audio signal input from pin (3) of external input
terminal J506 (HDMI AUDIO IN) to pin (71) of IC3301?
YES
Are I2S signal output from the pins (180), (181) of IC3301 nor-
mally?
YES
Is there L-ch audio signal input at pin(3) of IC2701?NOCheck connection between IC3301 and IC2701 and its periphIs there R-ch audio signal input at pin(7) of IC2701?
YES
Is the L-ch audio signal output at pin(27), (28), (29) and (30) of
IC2701 normal?
Is the R-ch audio signal output at pin(11), (12), (13) and (14) of
IC2701 normal?
NOCheck peripheral circuits of IC3301.
eral circuits.
NOCheck IC2701 and its peripheral circuits.
YES
Are the audio signal L-ch and R-ch output at (1)/(2) and (3)/(4) of
P2701 normal?
YES
Check speakers and their peripheral circuits.
NOCheck circuit between IC2701 & P2701.
6 – 8
LC-32L400M
No audio heard (5)
No PC audio output
YES
Pin (2) of J506: Is L-ch input into the pin (70) of IC3301?
Pin (3) of J506: Is R-ch input into the pin (71) of IC3301?
YES
Are I2S signal output from the pins (180), (181) of IC3301 normally?NOCheck peripheral circuits of IC3301.
YES
Is there L-ch audio signal input at pin(3) of IC2701?NOCheck connection between IC3301 and IC2701 and its
Is there R-ch audio signal input at pin(7) of IC2701?
YES
Is the L-ch audio signal output at pin(27), (28), (29) and (30) of
IC2701 normal?
Is the R-ch audio signal output at pin(11), (12), (13) and (14) of
IC2701 normal?
NOCheck IC2701 and its peripheral circuits.
peripheral circuits.
YES
Are the audio signal L-ch and R-ch output at (1)/(2) and (3)/(4) of
P2701 normal?
YES
Check speakers and their peripheral circuits.
NOCheck circuit between IC2701 & P2701.
6 – 9
LC-32L400M
CHAPTER 7. OVERALL WIRING/BLOCK DIAGRAM
[1] OVERALL WIRING DIAGRAM
I
H
G
LC-32L400M
Service Manual
F
E
D
C
B
A
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7 – 1
202122
LC-32L400M
㪶
㪀
㪀
㪀
㪀
㪀
㪀
㪀
㪀
㩿
㩿
㪀
㩿
㪶
㪶
[2] SYSTEM BLOCK DIAGRAM
㪣㪜㪛
㪣㪜㪛
㪛㪈㪇㪉㪆㪈㪇㪊
㪦㪧㪚
㪪㪘㪩㩿㪉㪀
㪩㪘㩿㪎㪀
㪧㪊㪊㪇㪈
㪨㪧㪣㪞㪥㪘㪊㪉㪎㪮㪡㪱㪱㪰
㪠㪩㪜㪤
㪠㪩
㪠㫅㫋㪼㫉㪽㪸㪺㪼
I
H
㪭㪟㪠㪩㪉㪋㪇㪇㪉㪘㪪㪄㪈㪰
㪧㪚㩷㩷㪛㪪㪬㪙㩷㪈㪌㫇㫀㫅
㪪㪚㪌㪇㪉
㪠㪥㪧㪬㪫㪌
㪨㪪㪦㪚㪥㪘㪏㪏㪇㪮㪡㪨㪱
㪨㪚㪥㪚㪤㪘㪇㪈㪉㪮㪡㪱㪱
㪨㪚㪥㪚㪮㪘㪇㪈㪇㪮㪡㪱㪱㪰
㪜㪜㪧㪩㪦㪤
㪠㪚㪌㪇㪏
㪧㪚㩿㪩㪞㪙㪀
㪟㪛
㪭㪛
㪮㪧㪶㪚㪫㪩㪣
㪠㪥㪧㪬㪫㪈
㪟㪛㪤㪠㩷㪈
㪪㪚㪈㪌㪇㪈
㪨㪪㪦㪚㪱㪘㪈㪎㪊㪮㪡㪨㪱㪰
㪟㪧㪞㩷㪈㪆㪧㪦㪮㪌㪭㩷㪈
㪟㪛㪤㪠㩷㪛㪛㪚㪈
㪧㪚㩷㪛㪛㪚
㪋㪀
㪻㪸㫋㪸
㪉
㪺㫃㫂
㪟㪛㪤㪠㪀
㪠㪉㪚
㪚㪜㪚
㪜㪜㪧㪩㪦㪤
㪠㪚㪈㪌㪇㪊
㪭㪟㪠㪩㪉㪋㪇㪇㪉㪘㪪㪄㪈㪰
㪮㪧㪶㪚㪫㪩㪣
㪠㪉㪚㩷㪘㪛㪛㪩㪜㪪㪪䋺㪚㪇
㪫㪬㪥㪜㪩
㪫㪬㪈㪈㪇㪈
㪩㪫㪬㪥㪨㪘㪇㪍㪊㪮㪡㪨㪱
㪠㪝
㪠㪝㩷㪘㪤㪧
㪭㪠㪝
㪪㪘㪮㩷㪝㫀㫃㫋㪼㫉
㪭㪠㪝㪂
㪚㪜㪚
㪚㪜㪚㩷㪠㪥㪟㪛㪤㪠㩷㪠㪥㪈
㪭㪠㪝㪄
㪭㪠㪝㩷㪠㪥
㪪㪠㪝
㪪㪘㪮㩷㪝㫀㫃㫋㪼㫉
㪪㪠㪝㪂
㪪㪠㪝㩷㪠㪥
㪠㪉㪚
㪪㪠㪝㪄
㪫㪜㪤㪧㩷㪪㪜㪥㪪㪦㪩
㪫㪟㪊㪊㪇㪈
㪩㪟㪄㪟㪯㪘㪇㪋㪎㪮㪡㪨㪱㪰
㪪㪘㪩㩿㪊㪀
㪠㪩㩷㪩㪼㪺㫀㪼㫍㪼㫉
㪦㪧㪚
㪩㪤㪚㪈㪇㪈
㪠㪚㪈㪇㪈
㵘㵘㵘㵘
㪩㩷㪣㪜㪛
䌇㩷㪣㪜㪛
㩷
G
㪎㪅㪍㪭㸢
㪈㪊㪅㪌㪭
㪧㪪㪶㪦㪥
㪧㪦㪮㪜㪩
㪠㪥㪭
㪬㪥㪠㪫
F
㪚㪦㪤㪧㪦㪥㪜㪥㪫㩷㪈㩷㪠㪥
㪠㪥㪧㪬㪫㪋
㪨㪡㪘㪢㪞㪘㪈㪊㪈㪮㪡㪱㪱
㪚㪦㪤㪧㪦㪥㪜㪥㪫㪈㩷㪘㪬㪛㪠㪦
E
㪠㪥㪧㪬㪫㪋
㪠㪥㪧㪬㪫㪊
㪚㪭㪙㪪㩷㪠㪥
㪨㪡㪘㪢㪞㪘㪈㪍㪋㪮㪡㪨㪱
㪡㪌㪌㪇㪐
㪡㪌㪌㪇㪊
㪡㪌㪌㪇㪏
㪠㪥㪧㪬㪫㪋㪶㪰㪃㪧㪹㪃㪧㫉
㪠㪥㪧㪬㪫㪋㩷㪣㪆㪩
㪠㪥
㪚㪭㪙㪪
㪠㪥㪧㪬㪫㪊
㪠㪥㪧㪬㪫㪊㩷㪣㪆㪩
㪧㪥㪣㪶㪦㪥
㪘㪚㪶㪛㪜㪫
㪣㪘㪤㪧㪶㪜㪩㪩
㪙㪣㪶㪦㪥
㪦㪝㪣
㪨㪚㪥㪚㪤㪘㪇㪈㪉㪮㪡㪱㪱
㪙㩷㫋㫆㩷㪙
㪧㪌㪉㪇㪈
㪈㪌㫇㫀㫅
㪙㩷㫋㫆㩷㪙
㪧㪌㪉㪇㪉
㪈㪌㫇㫀㫅
㪙㩷㫋㫆㩷㪙
㪪㪚㪌㪉㪇㪈
㪈㪌㫇㫀㫅
㪨㪚㪥㪚㪮㪘㪇㪈㪇㪮㪡㪱㪱㪰
㪙㩷㫋㫆㩷㪙
㪪㪚㪌㪉㪇㪉
㪈㪌㫇㫀㫅
㪣㪭㪛㪪㩿㪏㪹㫀㫋㪀
㵘
㪚㪦㪤㪧㪈
㪤㪪㪫㪐㪘㪏㪏㪋㪡㪣
㪣㪭㪛㪪㩿㪏㪹㫀㫋㪀
㪻㪸㫋㪸㩷㪘㩿㪏
㪺㫃㫂㩷㪘㩿㪉
㪻㪸㫋㪸㩷㪙㩿㪏
㪺㫃㫂㩷㪙㩿㪉
㪨㪧㪣㪞㪥㪘㪋㪈㪎㪮㪡㪱㪱㪰
㪧㪘
㪧㪉㪍㪇㪈
㪋㪇㫇㫀㫅
㪏㪄㪹㫀㫋㩷㪮㪯㪞㪘㩷㪘㫅㪸㫃㫆㪾
㪩㪼㪽㩷㪥㫆㪅㪠㪚㪊㪊㪇㪈
㪻㪸㫋㪸㩷㪘㩿㪈㪇
㪺㫃㫂㩷㪘㩿㪉
㪻㪸㫋㪸㩷㪙㩿㪈㪇
㪺㫃㫂㩷㪙㩿㪉
㪈㪉㪭
㪫㪄㪚㪦㪥
㪘㪌㪎
㩿㪌㪇㪟㫑㪀
㪩㪟㪄㪠㪯㪛㪇㪈㪏㪮㪡㪱㪱㪨
㪚㪭㪙㪪㪈
㪌㪇㪟㫑
㪪㪟㪘㪩㪧
ᄖ⽼㪧㪘㪥㪜㪣
㪊㪉㩾㩾
㪌㪇㪟㫑
㪪㪰㪆㪚㩷㪠㪥
㪠㪥㪧㪬㪫㪉
㪨㪪㪦㪚㪛㪘㪇㪊㪌㪮㪡㪱㪱
D
㪠㪥㪧㪬㪫㪉
㪚㪭㪙㪪㩷㪠㪥
㪨㪡㪘㪢㪞㪘㪈㪍㪋㪮㪡㪨㪱
C
㪢㪜㪰
㪚㪦㪥㪫㪩㪦㪣㩷㪪㪮
B
㪪㪐㪇㪈㪄㪪㪐㪇㪎
A
㪡㪌㪌㪈㪈
㪡㪌㪌㪈㪇
㪧㪦㪮㩷㪪㪮
㪪㪐㪇㪎
㪠㪥㪧㪬㪫㪉
㪠㪥㪧㪬㪫㪉
㪠㪥㪧㪬㪫㪉㩷㪣㪆㪩
㪤㪘㪠㪥㩷㪪㪮
㪢㪜㪰㪈
㪢㪜㪰㪉
㪪㪬㪙
㪪㪰㪆㪪㪚
㪚㪭㪙㪪
㪙㩷㫋㫆㩷㪙
㪧㪌㪉㪇㪊
㪈㪌㫇㫀㫅
㪙㩷㫋㫆㩷㪙
㪪㪚㪌㪉㪇㪊
㪈㪌㫇㫀㫅
㪨㪚㪥㪚㪮㪘㪇㪈㪇㪮㪡㪱㪱㪰㪨㪚㪥㪚㪤㪘㪇㪈㪉㪮㪡㪱㪱
㪟㪛㪤㪠㪆㪧㪚㩷㪣㪆㪩
㪤㪦㪥㪠㪫㪦㪩㩷㪣㪆㪩㩷㪦㪬㪫
㪡㪌㪇㪍
㪨㪡㪘㪢㪡㪘㪇㪉㪋㪮㪡㪱㪱
㪠㪥㪧㪬㪫㪈㪆
㪠㪥㪧㪬㪫㪐
㪤㪘㪠㪥
㪠㪥㪧㪬㪫㪋㪶㪪㩷㪻㪼㫋㪼㪺㫋
㪰㪆㪚㪈
㪚㪭㪙㪪㪉
㪣㪆㪩㩷㪠㪥㪇
㪣㪆㪩㩷㪠㪥㪈
㪣㪆㪩㩷㪠㪥㪉
㪣㪆㪩㩷㪠㪥㪊
㪤㪦㪥㪠㪫㪦㪩
㪦㪬㪫㪈
㪘㪛㩿㪇㪀
㪯㪫㪘㪣㩿㪈㪋㪅㪊㪈㪏㪤㪟㫑㪀
㪯㪠㪥㪆㪯㪦㪬㪫
㪪㪘㪩㩿㪈㪀㪪㪘㪩㩿㪇㪀
㪬㪘㪩㪫㪘㪬㪛㪠㪦㪶㪦㪬㪫
㵘㵘㵘
㪩㪪㪉㪊㪉㪚㩷㪙㫌㪽㪽㪼㫉
㪠㪚㪌㪇㪈
㪭㪟㪠㪤㪊㪉㪉㪈㪜㪠㪧㪄㪈㪰
㪩㪪㪄㪉㪊㪉㪚
㪪㪚㪌㪇㪈
㪨㪪㪦㪚㪥㪘㪏㪈㪇㪮㪡㪨㪱
㪬㪪㪙㩷㪠㪝
㪛㪧
㪬㪪㪙
㪨㪪㪦㪚㪱㪘㪈㪌㪊㪮㪡㪨㪱
㪡㪌㪇㪉
㪟㪆㪮㩷㪩㪜㪪㪜㪫
㪩㪜㪪㪜㪫
㪠㪚㪊㪊㪇㪉
㪭㪟㪠㪧㪪㪫㪏㪋㪉㪐㪬㪄㪈㪰
㪛㪩㪘㪤㩷㪠㪝
㪛㪛㪩㪉㩿㪈㪉㪏㪤㪹㪀
㪠㪚㪊㪌㪇㪈
㪩㪟㪄㪠㪯㪚㪐㪐㪋㪮㪡㪨㪱㪨
㪭㪟㪠㪰㪛㪘㪈㪋㪏㪨㪱㪄㪈㪰
㪨㪧㪣㪞㪥㪘㪈㪍㪇㪮㪡㪱㪱㪰
㪪㪧㪶㪣
㪪㪧㪶㪣
㪏㱅㩷㪌㪮
㪪㪧㪶㪣
㪘㪬㪛㪠㪦㩷㪘㪤㪧
㪠㪚㪉㪎㪇㪈
㪪㪧㪶㪣
㪧㪉㪎㪇㪈
㪪㪧㪠㩷㪠㪆㪝
㪪㪧㪠
㪪㪧㩷㪤㪬㪫㪜
㪪㪧㪶㪩
㪪㪧㪶㪩
㪪㪧
㪪㪧㪶㪩
㪪㪧㪶㪩
㪏㱅㩷㪌㪮
㪪㪧㪠㩷㪝㪣㪘㪪㪟
㪠㪯㪛㪈㪋㪉㪮㪡㪨㪱㪰
㪠㪚㪏㪋㪇㪈
㪪㪧㪠㩷㪝㪣㪘㪪㪟
㪮㪩㪠㪫㪜
㪚㪟㪜㪢㪜㪩㩷㪣㪘㪥㪛
㪩㪟㪄
㪯㪊㪊㪇㪈
㪩㪚㪩㪪㪚㪘㪉㪇㪐㪮㪡㪨㪱㪰
㪠㪉㪚㩷㪘㪛㪛㪩㪜㪪㪪䋺㪘㪏
㪜㪜㪧㪩㪦㪤㩿㪟㪛㪚㪧㪀
㪠㪚㪏㪋㪇㪊
㪠㪉㪚
㪩㪟㪄
㪠㪯㪛㪈㪈㪇㪮㪡㪨㪱㪰
㪠㪉㪚㩷㪘㪛㪛㪩㪜㪪㪪䋺㪘㪋
㪜㪜㪧㪩㪦㪤㩿㪛㪘㪫㪘㪀
㪠㪚㪏㪋㪇㪉
㪠㪉㪚
㪭㪟㪠㪩㪉㪋㪇㪍㪋㪘㪪㪄㪈㪰
㪍㪋㫂㪹㫀㫋
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LC-32L400M
CHAPTER 8. PRINTED WIRING BOARD ASSEMBLIES
[1] MAIN Unit
I
MAIN Unit
(Side-A)
H
G
LC-32L400M
Service Manual
F
E
D
C
B
A
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8 – 1
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LC-32L400M
I
MAIN Unit
H
G
(Side-B)
F
E
D
C
B
A
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8 – 2
202122
[2] POWER SUB Unit
I
LC-32L400M
H
POWER SUB Unit (Side-A)
G
F
E
D
C
B
A
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8 – 3
202122
LC-32L400M
I
H
POWER SUB Unit (Side-B)
G
F
E
D
C
B
A
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8 – 4
202122
[3] R/C, LED Unit
I
H
R/C, LED Unit (Side-A)
G
LC-32L400M
F
E
D
C
R/C, LED Unit (Side-B)
B
A
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LC-32L400M
LC-32L400M
CHAPTER 9. SCHEMATIC DIAGRAM
[1] DESCRIPTION OF SCHEMATIC DIAGRAM
1. VOLTAGE MEASUREMENT CONDITION:
1) The voltages at test points are measured on exclusive AC adaptor and the stable supply voltage of AC 110-240V. Signals are fed by a color bar signal generator for servicing purpose and the above voltages are measured with a 20k ohm/V tester.
2. INDICATION OF RESISTOR & CAPACITOR:
RESISTOR
1) The unit of resistance "Ω" is omitted.
(K=kΩ=1000Ω, M=MΩ).
2) All resistors are ± 5%, unless otherwise noted.
(K= ± 10%, F= ± 1%, D= ± 0.5%)
3) All resistors are 1/16W, unless otherwise noted.
CAPACITOR
1) All capacitors are µF, unless otherwise noted.
(P=pF=µµF).
2) All capacitors are 50V, unless otherwise noted.
CAUTION:
This circuit diagram is original one, therefore there may be a slight
difference from yours.
Service Manual
SAFETY NOTES:
1) DISCONNECT THE AC PLUG FROM THE AC OUTLET
BEFORE REPLACING PARTS.
2) SEMICONDUCTOR HEAT SINKS SHOULD BE REGARDED AS
POTENTIAL SHOCK HAZARDS WHEN THE CHASSIS IS
OPERATING.
IMPORTANT SAFETY NOTICE:
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.
9 – 1
[2] MAIN Unit
•MAIN Unit-1/14
I
H
G
LC-32L400M
F
E
D
C
B
A
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LC-32L400M
•MAIN Unit-2/14
I
H
G
F
E
D
C
B
A
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9 – 3
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•MAIN Unit-3/14
I
H
G
LC-32L400M
F
E
D
C
B
A
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LC-32L400M
•MAIN Unit-4/14
I
H
G
F
E
D
C
B
A
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•MAIN Unit-5/14
I
H
G
LC-32L400M
F
E
D
C
B
A
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LC-32L400M
• MAIN Unit-6/14 (*On this model, the MAIN Circuit Basic Diagram 7/14 is not applied.)
I
H
G
F
E
D
C
B
A
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9 – 7
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•MAIN Unit-8/14
I
H
G
LC-32L400M
F
E
D
C
B
A
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9 – 8
202122
LC-32L400M
•MAIN Unit-9/14
I
H
G
F
E
D
C
B
A
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9 – 9
202122
• MAIN Unit-10/14 (*On this model, the MAIN Circuit Basic Diagram 11/14, 12/14, 13/14 is not applied.)
I
H
G
LC-32L400M
F
E
D
C
B
A
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LC-32L400M
• MAIN Unit-14/14
I
H
G
F
E
D
C
B
A
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[3] POWER SUB Unit
• POWER SUB Unit-1/4
I
H
G
LC-32L400M
F
E
D
C
B
A
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LC-32L400M
• POWER SUB Unit-2/4
I
H
G
F
E
D
C
B
A
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• POWER SUB Unit-3/4
I
H
G
LC-32L400M
F
E
D
C
B
A
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LC-32L400M
• POWER SUB Unit-4/4
I
H
G
F
E
D
C
B
A
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[4] R/C, LED Unit
I
H
G
LC-32L400M
F
E
D
C
B
A
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LC-32L400M
9 – 17
PartsGuide
LC-32L400M
PARTS GUIDE
No. S40F6LC32L40M
LCD COLOUR TELEVISION
Note:
The reference numbers on the PWB are arranged
in alphabetical order.
[1]PRINTED WIRING BOARD ASSEMBLIES
[2]LCD PANEL
[3]DUNTKF537FM02 (MAIN Unit)
[4]DUNTKF538FM02 (POWER SUB Unit)
[5]DUNTKF539FM02 (R/C, LED Unit)
MODEL
CONTENTS
[10]SERVICE JIGS (USE FOR SERVICING)
LC-32L400M
[6]CABINET AND MECHANICAL PARTS
[7]LCD MODULE Assembly
[8]SUPPLIED ACCESSORIES
[9]PACKING PARTS
(NOT REPLACEMENT ITEM)
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.
LC-32L400M
NO.PARTS CODE
PRICE
RANK
NEW
MARK
PAR T
DELIVERY
[1] PRINTED WIRING BOARD ASSEMBLIES
N DUNTKF537FM02BPNVMAIN Unit
N DUNTKF538FM02BHNVPOWER SUB Unit
N DUNTKF539FM02ASNVR/C, LED Unit
N RDENC2590TPZZBBVINVERTER Unit
[2] LCD PANEL
N B3KU32L50DANV32"LCD Panel Module (R1LK315T3LA5BX)
S1 SPAKCF646WJZZ-N-Packing Case
S2 SPAKPB511WJZZ--Wrapping Paper
S3 SPAKPB514WJ4Z--Mirror Mat Base
S4 SPAKXC971WJZZ-N-Packing Add. (Top)
S5 SPAKXC972WJZZ-N-Packing Add. (Bottom)
S6 SSAKA0001PEZZ--Polyethylene Bag
S7 SSAKHA050WJZZ--Polyethylene Bag (for Screw)
S8 TLABV0182AJZZ--No. Card
S9 TLABZC327WJZZ--Packing Case Label (for Vietnam)
S10 TLABZC565WJZZ-N-Carton Label (for Vietnam)
[10] SERVICE JIGS (USE FOR SERVICING)
N QCNW-L077WJQZBANVConnecting Cord, MAIN-LCD CONTROL (LW)
N QCNW-K814WJQZAWNVConnecting Cord, POWER-INVERTER (PI)
N QCNW-J413WJQZAQNVConnecting Cord, MAIN-SPEAKER (SP)
No part of this publication may be reproduced,
stored in a retrieval system, or transmitted in
any form or by any means, electronic, mechanical,
photocopying, recording, or otherwise, without
prior written permission of the publisher.
May. 2010
SY. KD
SHARP CORPORATION
AV Systems Group
CS Promotion Center
Yaita, Tochigi 329-2193, Japan
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