Sharp LC-22DC30M Service Manual

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LC-22DC30M

SERVICE MANUAL

No. S12V630DC30M/

LCD COLOUR TELEVISION

MODEL

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-22DC30M

CONTENTS

SAFETY PRECAUTION

IMPORTANT SERVICE SAFETY PRE-

CAUTION ............................................................i

PRECAUTIONS FOR USING LEAD-FREE

SOLDER ............................................................ ii

OUTLINE

MAJOR SERVICE PARTS ................................ iii

CHAPTER 1. SPECIFICATIONS

[1] SPECIFICATIONS ......................................... 1-1

CHAPTER 2. OPERATION MANUAL

[1] OPERATION MANUAL .................................. 2-1

CHAPTER 3. DIMENSIONS

[1] DIMENSIONS ................................................ 3-1

CHAPTER 7. OVERALL WIRING/BLOCK DIAGRAM

[1] OVERALL WIRING DIAGRAM ......................7-1

[2] SYSTEM BLOCK DIAGRAM.........................7-2

CHAPTER 8. PRINTED WIRING BOARD ASSEMBLIES

[1] MAIN Unit ...................................................... 8-1

CHAPTER 9. SCHEMATIC DIAGRAM

[1] DESCRIPTION OF SCHEMATIC DIA-

GRAM............................................................ 9-1

[2] MAIN Unit ...................................................... 9-2

Parts Guide

CHAPTER 4. REMOVING OF MAJOR PARTS

[1] REMOVING OF MAJOR PARTS ................... 4-1

CHAPTER 5. ADJUSTMENT

[1] ADJUSTMENT PROCEDURE ....................... 5-1

[2] USB Clone (Smart Loader) ............................ 5-6

[3] PUBLIC MODE SETTING PROCEDURE........ 5-7

CHAPTER 6. TROUBLESHOOTING TABLE

[1] TROUBLESHOOTING TABLE ....................... 6-1

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-22DC30M

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.

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

TO EXPOSED METAL PARTS

DVM

AC SCALE

1.5k ohm 10W

0.15µF

TEST PROBE

CONNECT TO KNOWN EARTH GROUND

SAFETY NOTICE

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.

LC-22DC30M

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.

Lead-free wire solder for servicing

PARTS CODE

ZHNDAi123250E BL J φ0.3mm 250g (1roll) ZHNDAi126500E BK J φ0.6mm 500g (1roll) ZHNDAi12801KE BM J φ1.0mm 1kg (1roll)

PRICE RANK

PART

DELIVERY

DESCRIPTION

LC-22DC30M

iii

Service Manual

OUTLINE

MAJOR SERVICE PARTS

PWB UNIT

OTHER UNIT

IC FOR EXCLUSIVE USE OF THE SERVICE

SERVICE JIGS

noitpircseD.oN traP.oN feR

N DKEYMG073FM02 MAIN Unit

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N RLCDTA251WJQZ LCD Panel Module

yt'QnoitpircseD.oN traP.oN feR

IC508 RH-iXD172WJQZS IC PC EDID 1

IC1501 RH-iXD173WJQZS IC HDMI EDID 1

yt’QnoitpircseD.oN traP.oN feR

N QCNW-M477WJPZ Extension Cable, LE 1)LB lenaP-niaM( eriW LB D N QCNW-M476WJPZ Extension Cable, LV 1)rellortnoC DCL-niaM( CFF SD N QCNW-M161WJPZ Extension Cable, 1)rekaepS-niaM( eriW rekaepS

CHAPTER 1. SPECIFICATIONS

[1] SPECIFICATIONS

LC-22DC30M

Service Manual

1 – 1

LC-22DC30M

CHAPTER 2. OPERATION MANUAL

[1] OPERATION MANUAL

Part names

TV (Front)

Remote control sensor

POWER indicator

Light off Power off Lighted (Red) The TV is in standby mode. Lighted (Green) The TV is on.

TV (Rear)

Service Manual

1 POWER (On/Off) button 2 MENU button

3INPUTbutton 4 Channel up ( )/down ( ) buttons 5 Volume up (+)/down (-) buttons

6 INPUT 1 (HDMI) terminal* 7 INPUT 4 terminal* 8 INPUT 3 terminals 9 DC IN terminal 10 AUDIO OUT terminals 11 Antenna input terminal 12 INPUT 2 terminals 13 USB terminal 14 Headphone jack ( 3.5 mm)

The speakers do not output volume

•

when headphones are plugged in.

* The INPUT 1 and INPUT 4 terminals can both use the same audio input terminal. However, the proper item must be

selected in the "PC audio select" menu.

The illustrations in this operation manual are for explanation purposes and may vary slightly from the actual operations.

•

2 – 1

Remote control unit

LC-22DC30M

1 2

6 7

15 16

1 POWER

To switch the power on and off.

2 DISPLAY

Display the channel or input information.

3 SLEEP

Set the Sleep timer.

0 hr. 30 min. 1 hr. 00 min.

4 0…9

Set the channel.

5 (Flashback)

Press to return to the previous selected channel or external input mode.

6AVMODE

Select an audio and video setting.

(STANDBY/ON)

Off

2 hr. 30 min.

1 hr. 30 min.

2 hr. 00 min.

7VOL+/VOL

Set the volume. (VOL+) Increasethe volume. (VOL-) Decreasethe volume.

8 (Mute)

Press Mutes sound. Press again Restores 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+.

9 (Cursor)

///

Select a desired item on the setting screen.

ENTER

Execute a command.

10 FREEZE

Freeze a motion picture on the screen.

11 Colour (Red/Green/Yellow/Blue)

The coloured buttons are correspondingly used to select the coloured items on the screen.

12 ECO

Reduce overall power consumption based on user preferences.

13 PHOTO

Display your pictures directly on the TV screen.

14 INPUT (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.

16 MPX

Select the sound multiplex mode.

17 MENU

Display the menu screen.

18 RETURN

MENU mode: Return to the previous menu screen.

2 – 2

LC-22DC30M

7 DEGREE

0 DEGREE

-5 DEGREE

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.

Confirm the screws supplied with the TV.

Screws (x2)

(used in step 3)

Insert the stand base to the stand post on the

bottom of the TV. ( )

Insert and tighten the 2 screws into the 2 holes

on the bottom of the stand base. ( )

NOTE

To detach the stand, perform the steps in reverse order.

•

Three screen position settings

These settings will enable user to adjust the TV's position

based on user's viewing condition.

Position Description

Suitable for lower eye viewing level such as

-5° when user is lying down or sitting on the floor.

0°

User's eye level is at the same level with the TV.

Suitable for higher eye viewing level such as

7°

when the TV is located on the floor.

Soft

cushion

-5°

Forward

0°

Standard

7°

Backward

Screw

Screw driver

Screw holes

Guide holes

2 – 3

CHAPTER 3. DIMENSIONS

[1] DIMENSIONS

LC-22DC30M

Service Manual

Unit mm

3 – 1

LC-22DC30M

CHAPTER 4. REMOVING OF MAJOR PARTS

Service Manual

[1] REMOVING OF MAJOR PARTS

1. Removing of the Rear Cabinet Ass’y

1. Remove the 7 lock screws , 3 lock screws , 6 lock screws and detach the Rear Cabinet Ass’y .

Rear Cabinet Ass'y

4 – 1

2. Removing of the Side Cover and MAIN Unit

1. Remove the Side Cover .

2. Remove the EMC Tape .

3. Disconnect the connectors (SB, SP, LVDS) from the Main Unit.

4. Disconnect the connectors (SB, LVDS) from the LCD Panel Module.

5. Detach the Main Unit .

[LVDS]

MAIN Unit

LC-22DC30M

[SB]

EMC Tape

[SB]

[SP]

[LVDS]

Side Cover

4 – 2

LC-22DC30M

3. Removing of the Bottom Bracket and Speaker L/R

1. Remove the 2 lock screws , 2 lock screws and tthe Bottom Bracket .

2. Detach the Speaker L/R .

Speaker-R

Bottom Bracket

Speaker-L

4 – 3

4. Removing of the LCD Panel Module and Support Angle

1. Detach the 7 pieces hooks and detach the LCD Panel Module .

2. Remove the 2 lock screws and detach the Support Angle .

Front Cabinet Ass'y

Hook

LC-22DC30M

Hook

LCD Panel Module

Support

Angle

4 – 4

LC-22DC30M

CHAPTER 5. ADJUSTMENT

Service Manual

[1] ADJUSTMENT PROCEDURE

1. Entering and cancel the adjustment process mode

1) While holding down the TV/VIDEO and Volume DOWN keys at the same time, plug in the AC cord to turn on the power. (“K” standing for inspection process mode is displayed on the upper left position of the screen.)

2) Press the Channel DOWN and Volume DOWN keys at the same time. (The adjustment process mode screen appears.)

3) 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.

1. key operation

Remote controller key Main unit key Function

CH ( / ) VOL (+ / –) VOL (+ / –) Changing volume (UP/DOWN) Cursor ( / )

Cursor ( / ) INPUT button on remote controller ENTER —————— ——————

* Input mode is switched automatically when relevant adjustment is started so far as the necessary input signal is available.

CH ( / )

—————— Turning a page (PREVIOUS/NEXT) —————— Changing a selected line setting (+10/-10)

INPUT button Input source switching (toggle switching)

Changing channel (UP/DOWN)

(T V-DAV-1/ SAV-1 → AV-2 → COMPONENT → HDMI → PC)

3. Software upgrading.

1) Plug off the LCD TV.

2) Insert the USB device to the USB terminal at the LCD TV.

(Make sure that the 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

5 – 1

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

LC-22DC30M

8) Plug off the LCD TV and plug ON again as usual.

9) LCD TV is running with the latest software.

4. EDID DATA INPUT

4.1. HDMI EDID

Adjustment item Adjustment conditions Adjustment procedure

1 EDID Input

(HDMI)

4.2. ANALOG PC EDID

Adjustment item Adjustment conditions Adjustment procedure

1 EDID Input

(ANALOG PC)

* HDMI EDID file name: edid_FHD_HDMI1_100324.bin

* PC EDID file name: edid_Ivy_ FHD _PC_2k.bin

Main Software Package : Package 02 Main Software Filename : ORCHID_MM_Asia_Pack02_vxxx.bin

Inspection mode Confirrm the file name/version.

*xxx=Software version. If any changes of software, will be informed by MARUHEN.Main Software

1) EDID data is input to IC1501 (HDMI INPUT1).

2) EDID data is input before HDMI operation checking.(Without EDID data, HDMI will not function correntry)

1) EDID data is input to IC508 (PC INPUT) at checking line.

2) EDID data is input before Analog PC operation checking.

5 – 2

LC-22DC30M

5. Signal adjustment

5.1. Signal check

Confirmation of signal from generator (setting to spec level)

• PAL Composite signal : 0.7Vp-p ± 0.02Vp-p (Pedestal to white level)

• 15K Component signal (50Hz) : Y level:

Pb, Pr level:

• 33K Component signal : Y level: Pb, Pr level:

5.1.1 Adjustment Mode

Adjustment item Adjustment conditions Adjustment procedure

1 Adjustment mode 1) Press the test key at the test remote control.

5.1.2 Component 15K 50Hz signal adjustment (COMP-SD)

Adjustment item Adjustment conditions Adjustment procedure

1 Adjustment [Signal]

COMP 15K 50Hz (576i) 100% Full-field Colour Bar

[Terminal] INPUT 3 COMPONENT

0.7Vp-p ± 0.02Vp-p (Pedestal to white level)

0.7Vp-p ± 0.02Vp-p

0.7Vp-p ± 0.02Vp-p (Pedestal to white level)

0.7Vp-p ± 0.02Vp-Com

Feed the COMPONENT 15K 50Hz (576i) 100% Full-field Colour Bar signal (100% colour saturation) to INPUT 3 COMPONENT terminal.

2 Auto adjustment

performance

Process Mode page 4 (COMP SD)

1) At the related page, move cursor to [COMP SD ADJ], press ENTER.

2) [OK] appears when finished.

5.1.3 Component 33K 60Hz signal adjustment (COMP-HD)

Adjustment item Adjustment conditions Adjustment procedure

1 Adjustment [Signal]

2 Auto adjustment

performance

COMP 33K 60Hz (1080i) 100% Full-field Colour Bar

[Terminal] INPUT 3 COMPONENT

Process Mode page 5 (COMP HD)

Feed the COMPONENT 33K 60Hz (1080i) 100% Full-field Colour Bar signal (100% colour saturation) to INPUT 3 COMPONENT terminal.

1) At the related page, move cursor to [COMP HD ADJ], press ENTER.

2) [OK] appears when finished.

5.1.4 PC (ANALOG RGB) signal adjustment (PC-RGB)

Adjustment item Adjustment conditions Adjustment procedure

1 Adjustment [Signal]

XGA 60Hz 100% Checkered Pattern

[Terminal] PC INPUT

Feed the XGA 60Hz 100% Checkered pattern signal (100% colour saturation) to PC INPUT. *Please make sure SYNC is OFF.

100% white Black

2 Auto adjustment

performance

Process Mode page 6 (PC-RGB)

1) At the related page, move cursor to [RGB ADJ], press ENTER.

2) [OK] appears when finished.

5 – 3

5.2. White balance adjustment

Adjustment item Adjustment conditions Adjustment procedure

1 Adjustment Brightness : MAX

AV Mode: DYNAMIC Active Backlight : OFF Set the luminance meter on the center of the screen

LC-22DC30M

For the details of white balance adjustment procedure, please refer to white balance adjustment spec for Kameyama model.

1) Confirm the set condition.

2) Connect the white balance jig.

3) Through RS-232C command, adjustment mode screen is displayed.

2 Auto Adjustment

performance

[command] Adjustment Mode KRSW0001 KKT10037

FACT0001 Setting KYOF0001 OSDS0001 SBSL16_ _

Multi point adj. Mode MSET0000 WBI20255

Point 2 WBI20229 MG2G**** MG2B**** MG2R****

Point 1 WBI10051 MG1G**** MG1B**** MG1R****

Write MSET0003

Set Max.Level MGMG**** MGMB**** MGMR****

[Adjustment Procedure]

1) Using the remote control, set the LCD TV to adjustment mode.

2) Measure Max brightness (Lmax).

3) Calculate min. brightness (Lmin)=Lmax/1000.

4) Measure Point 2 brightness (Lhigh).

5) Set the reference value R,G,B of Point 2 (Ref.2)=3664 x (229/P2) where P2=255 x [(Lhigh-Lmin)/(Lmax-Lmin)]1/2.2

6) 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.

7) Measure Point 1 brightness (Llow).

8) Set the reference value R,G,B of Point 1 (Ref.1)=816 x (51/P1) where P1=255 x [(Llow-Lmin)/(Lmax-Lmin)]1/2.2

9) Set the specified gradation for point 1. Set G of point 1 to the default value [(Ref.1 x G value of point 2/Ref.2), with fractions rounded] and adjust RB to the reference value of point 1.

10)Set the G of point Max. to the default value (4080 x G value of point 2/Ref.2). Set the R,B Max. value [Gmax-G value of point 2 + (R,B value of pint 2)].

11)Adjusted value is writing at [command] MSET0003.

12)Shut down the AC power.

*Initial value at RGB 2 point : 3664 *Initial value at RGB 1 point : 816

[Adjustment Value] ITeaching set send by engineering dept is set as reference.

[Reference value for adjustment reference] Equipment: Luminance meter [Minolta CA-210]

Level

Point 2

ref.

values Point 1

ref.

values

Ref. : For inspection, set the LCD TV as below.

AV MODE: [DYNAMIC] (Reset)

Aging Time: Minimum 60 minutes

229

Spec

Data

x=0.281 y=0.288

x=0.272 y=0.277

5 – 4

Adjustment

Spec.

r0.0010

r0.0045

Inspection

Spec.

r0.0020

r0.0090

LC-22DC30M

6. 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.

Adjustment item Adjustment condition Adjustment procedure

Factory setting AC power off to exit the fac-

tory setting.

[Factory setting with adjustment process mode]

1) Enter the adjustment process mode.

2) Move the cursor to [Factory init] on page 2/10.

3) Press “ENTER” to execute

4) After a while,"OK" display appears and background colour is green, the 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 – 5

LC-22DC30M

[2] USB Clone (Smart Loader)

1. Description

The Smart Loader is a function implemented in the service software to easily replicate the user settings of one TV into another.

These settings include (but not restricted to): picture and audio, turning set-up, language and country selection, PIN, child locked programs etc.

Factory adjustments are not copied as they are different for every TV.

The Smart Loader makes possible the user data to be stored in a memory device connected to the USB terminal of the TV that is used as reference and later load those data into other TVs by using their respective USB terminal.

2. How it works

1. Enter USB clone menu (Smart Loader)

i) Press panel key [TV/VIDEO] and [VOL+] and AC on, it will go to password entry OSD

---

ii) Enter digit “369” then it will go to Smart Loader Menu

Smart Loader

SMLD Store [ ]

SMLD Restore [ ]

2. Smart Loader function

SMLD Store SMLD Restore

2nd AQUOS TVUSB1st AQUOS TV

i) SMLD Store

• To copy all related data from TV -> USB and put under a fixed filename “SHP_SMLD.bin” (8kB).

ii) SMLD Restore

• To restore the related data from USB -> TV.

iii) SMLD Store and Restore execution

• To execute SMLD Store or SMLD Restore, highlight at selected item and press Enter.

• When copying is in process, “WAIT” is displayed.

• After cloning process is done, “OK” is displayed.

If cloning process is not finished due to error (e.g. no pendrive detected), “NG” is displayed.

3. Exit USB Clone menu (Smart Loader)

i) To exit Smart Loader menu, plug off AC Cord.

5 – 6

+ 44 hidden pages

Sharp LC-22DC30M Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual