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Sharp LC-22DC30M Service Manual
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Sharp LC-22DC30M Service Manual

Lcd colour television
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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.
SAFETY PRECAUTION
IMPORTANT SERVICE SAFETY PRE-
CAUTION ............................................... . ............i
PRECAUTIONS FOR USING LEAD-FREE
SOLDER ................................................ . ...........ii
Major Service Parts ..................... . .......... iii
CHAPTER 1. SPECIFICATIONS
[1]
SPECIFICATIONS ................................. . ....... 1-1
[1]
Operation Manual .......................... . ....... 2-1
CHAPTER 3. DIMENSIONS
[1]
DIMENSIONS ........................................ . ....... 3-1
[1]
Removing Of Major Parts ........... . ....... 4-1
CHAPTER 5. ADJUSTMENT
[1]
Adjustment Procedure ............... . ....... 5-1
[2]
Usb Clone (Smart Loader) .................... . ....... 5-6
[3]
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.

SERVICE MANUAL

LCD COLOUR TELEVISION
MODEL
CONTENTS
[1]
OVERALL WIRING DIAGRAM ......................7-1
[2]
System Block Diagram .........................7-2
CHAPTER 8. PRINTED WIRING BOARD ASSEM-
BLIES
[1]
Main Unit ......................................................8-1
[1]
Description OF SCHEMATIC DIA-
GRAM............................................................9-1
[2]
Main Unit ......................................................9-2
LC-22DC30M
No. S12V630DC30M/
LC-22DC30M
This document has been published to be used for
after sales service only.
The contents are subject to change without notice.

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  • Page 1: Service Manual

    TopPage LC-22DC30M SERVICE MANUAL No. S12V630DC30M/ LCD COLOUR TELEVISION LC-22DC30M 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.

  • Page 2: Safety Precaution

    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 All checks must be repeated with the AC cord plug connection reversed.
  • Page 3 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.

  • Page 4: Main Unit

    LC-22DC30M OUTLINE Service Manual MAJOR SERVICE PARTS PWB UNIT DKEYMG073FM02 MAIN Unit OTHER UNIT RLCDTA251WJQZ LCD Panel Module IC FOR EXCLUSIVE USE OF THE SERVICE IC508 RH-iXD172WJQZS IC PC EDID IC1501 RH-iXD173WJQZS IC HDMI EDID SERVICE JIGS ’ QCNW-M477WJPZ Extension Cable, LE...

  • Page 5: Specifications

    LC-22DC30M CHAPTER 1. SPECIFICATIONS Service Manual [1] SPECIFICATIONS 1 – 1...

  • Page 6: Operation Manual

    LC-22DC30M CHAPTER 2. OPERATION MANUAL Service 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) 1 POWER (On/Off) button...
  • Page 7 LC-22DC30M Remote control unit 7 VOL + /VOL - Set the volume. (VOL + ) Increasethe volume. (VOL - ) Decreasethe volume. (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.
  • Page 8 LC-22DC30M 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.

  • Page 9: Dimensions

    LC-22DC30M CHAPTER 3. DIMENSIONS Service Manual [1] DIMENSIONS Unit mm 3 – 1...

  • Page 10: Removing Of Major Parts

    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 4 Rear Cabinet Ass'y 4 –...

  • Page 11: Main Unit

    LC-22DC30M 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.
  • Page 12 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 4 Speaker-L Speaker-R 3 Bottom Bracket 4 – 3...
  • Page 13 LC-22DC30M 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 1 Hook 1 Hook...

  • Page 14: Chapter 5. Adjustment 1] Adjustment Procedure

    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 inspec- tion process mode is displayed on the upper left position of the screen.)
  • Page 15 LC-22DC30M 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 and plug ON again as usual.

  • Page 16: Signal Adjustment

    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) : 0.7Vp-p ± 0.02Vp-p (Pedestal to white level) Y level: 0.7Vp-p ±...
  • Page 17 LC-22DC30M 5.2. White balance adjustment Adjustment item Adjustment conditions Adjustment procedure Adjustment Brightness : MAX For the details of white balance adjustment procedure, please refer to white balance AV Mode: DYNAMIC adjustment spec for Kameyama model. Active Backlight : OFF Set the luminance meter on 1) Confirm the set condition.
  • Page 18 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...

  • Page 19: Usb Clone (Smart Loader)

    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.

  • Page 20: Public Mode Setting Procedure

    LC-22DC30M [3] PUBLIC MODE SETTING PROCEDURE 1. How to start Public Mode • There are the following two ways to get the public mode setup screen displayed. 1) Press the “INPUT” and “VOL (+)” keys on the set at once and turn on the power.
  • Page 21 LC-22DC30M 4. Public Mode Menu The guidance is not displayed onscreen. Setup procedure • To move the cursor up and down, use the “cursor UP/DOWN” key (remote controller) and “CH ( )” key (remote controller and set). • To change the settings, use the “cursor RIGHT/LEFT” key (remote controller) and “VOL (+)/(–)” key (remote controller and set).
  • Page 22 LC-22DC30M 3. VOLUME FIXED Selection Selection between “Variable” and “Fixed” (loop provided) Default Variable Explanation Sound volume is fixed and made invariable. Limit in setting • The sound volume for the ON-timer (Wake up timer) is fixed also without display of menu. Besides, the setting is made impossible.
  • Page 23 LC-22DC30M 8. ON SCREEN DISPLAY Selection Selection between “Yes”, “No” (loop provide) Default Explanation The following OSD displays are made ineffective. Displays of menu group, channel call, sound volume bar and direct key call Limit in setting • Set time of the OFF-timer (SLEEP TIMER) is cleared.
  • Page 24 LC-22DC30M 13.RC PATH THROUGH Selection “Off”, “On: TV RCE”, “On: TV RCD” Default Explanation Remote control signal output from the pin 9 of the RS-232C terminal and signal reception is enabled or disabled. When set to “ON: TV RCE”, TV also receives signals. With “ON: TV RCD”, the remote control signal is output from the pin 9, but TV does not respond to the remote control.
  • Page 25 LC-22DC30M 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? Reconnect the AC cord tightly and turn on the power again.
  • Page 26 LC-22DC30M With [RF] signal input No video onscreen (1) No video in the UHF/VHF reception Is there IF output from the tuner pin(10) of TU1101 as specified? Check TU1101 and its peripheral circuits. Is there VIF input at pin 74 & 75 of IC3301? Check the circuit between TU1101 &...
  • Page 27 LC-22DC30M With <Component> signal input No video onscreen (3) No external input video onscreen <INPUT 3> Is INPUT 3 selected on the input select menu screen? Select INPUT 3 on the input select menu screen to pick up the right input signal.
  • Page 28 LC-22DC30M No audio heard (1) No sound in the UHF/VHF reception. Is the IF output from the tuner pin (10) of TU1101 as specified? Check TU1101 and its peripheral circuits. Is there the I2S signal input at pins (77), (78) of IC3301? Check IC3301 and its peripheral circuits.
  • Page 29 LC-22DC30M No audio heard (2) No external audio heard <INPUT 2> Is there the L-ch audio signal input from pin (4) of input terminal J502 to pin (47) of IC3301? Is there the R-ch audio signal input from pin (5) of input terminal J502 to pin (48) of IC3301? <INPUT 3>...
  • Page 30 LC-22DC30M No audio heard (3) No HDMI sound heard. <INPUT 1> (*INPUT 1 is digital audio.) Does the HDMI image appear onscreen? Refer to “<INPUT 1> in No external input video onscreen (HDMI)”. No audio output from <INPUT 1> Check the EDID.
  • Page 31 LC-22DC30M No audio heard (4) No sound from the HDMI sound input terminal. (INPUT 1 analog audio) Is there the L-ch audio signal input from pin (2) of external input terminal J506 (HDMI AUDIO IN) to pin (55) of IC3301?
  • Page 32 LC-22DC30M No audio heard (5) No PC audio output Pin (2) of J506: Is L-ch input into the pin (55) of IC3301? Pin (3) of J506: Is R-ch input into the pin (56) of IC3301? Are I2S signal output from the pins (80), (81) of IC3301 normally? Check peripheral circuits of IC3301.

  • Page 33: Chapter 7. Overall Wiring/Block Diagram 1] Overall Wiring Diagram

    LC-22DC30M CHAPTER 7. OVERALL WIRING/BLOCK DIAGRAM Service Manual [1] OVERALL WIRING DIAGRAM DKEYMF969FM 7 – 1...

  • Page 34: System Block Diagram

    LC-22DC30M [2] SYSTEM BLOCK DIAGRAM 7 – 2...
  • Page 35 LC-22DC30M CHAPTER 8. PRINTED WIRING BOARD ASSEMBLIES Service Manual [1] MAIN Unit MAIN Unit (Side-A) 8 – 1...
  • Page 36 LC-22DC30M MAIN Unit (Side-A Chip) 8 – 2...

  • Page 37: Description Of Schematic Dia Gram

    LC-22DC30M CHAPTER 9. SCHEMATIC DIAGRAM Service Manual [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 colour bar signal generator for servicing purpose and the above voltages are measured with a 20k ohm/V tester.
  • Page 38 LC-22DC30M [2] MAIN Unit • MAIN Unit-1/11 9 – 2...
  • Page 39 LC-22DC30M • MAIN Unit-2/11 9 – 3...
  • Page 40 LC-22DC30M • MAIN Unit-3/11 9 – 4...
  • Page 41 LC-22DC30M • MAIN Unit-5/11 9 – 5...
  • Page 42 LC-22DC30M • MAIN Unit-6/11 9 – 6...
  • Page 43 LC-22DC30M • MAIN Unit-7/11 9 – 7...
  • Page 44 LC-22DC30M • MAIN Unit-8/11 9 – 8...
  • Page 45 LC-22DC30M • MAIN Unit-9/11 9 – 9...
  • Page 46 LC-22DC30M • MAIN Unit-10/11 BA002WJQZ 9 – 10...
  • Page 47 LC-22DC30M • MAIN Unit-11/11 9 – 11...
  • Page 48 LC-22DC30M • MAIN Unit-12/12 9 – 12...
  • Page 49 LC-22DC30M PartsGuide PARTS GUIDE No. S12V630DC30M/ LCD COLOUR TELEVISION LC-22DC30M MODEL Note: The reference numbers on the PWB are arranged in alphabetical order. CONTENTS PRINTED WIRING BOARD PARTS ASSEMBLIES SUPPLIED ACCESSORIES LCD PANEL MODULE PACKING PARTS DKEYMG073FM02 (MAIN Unit) SERVICE JIGS (USE FOR...
  • Page 50 LC-22DC30M PRICE PART PARTS CODE DESCRIPTION RANK MARK DELIVERY [1] PRINTED WIRING BOARD ASSEMBLIES MAIN Unit DKEYMG073FM02 [2] LCD PANEL MODULE LCD Panel Module Unit [3] DKEYMG073FM02 (MAIN Unit) C102 Capacitor RC-KZA837WJQZY C103 Capacitor RC-KZA837WJQZY C501 Capacitor 0.01 25V Ceramic...
  • Page 51 LC-22DC30M PRICE PART PARTS CODE DESCRIPTION RANK MARK DELIVERY [3] DKEYMG073FM02 (MAIN Unit) C1920 Capacitor RC-KZA115WJZZY C1921 Capacitor 1000p 50V Ceramic VCKYCZ1HB102KY C1922 Capacitor 1000p 50V Ceramic VCKYCZ1HB102KY C3101 Capacitor 0.1 10V Ceramic VCKYCZ1AB104KY C3102 Capacitor 0.1 10V Ceramic VCKYCZ1AB104KY Capacitor 0.1 10V Ceramic...
  • Page 52 LC-22DC30M PRICE PART PARTS CODE DESCRIPTION RANK MARK DELIVERY [3] DKEYMG073FM02 (MAIN Unit) C3502 Capacitor 0.1 10V Ceramic VCKYCZ1AB104KY C3503 Capacitor 0.1 10V Ceramic VCKYCZ1AB104KY C3504 Capacitor 0.1 10V Ceramic VCKYCZ1AB104KY C3505 Capacitor 0.1 10V Ceramic VCKYCZ1AB104KY C3506 Capacitor 0.1 10V Ceramic VCKYCZ1AB104KY Capacitor 0.1 10V Ceramic...
  • Page 53 LC-22DC30M PRICE PART PARTS CODE DESCRIPTION RANK MARK DELIVERY [3] DKEYMG072FM02 (MAIN Unit) FB521 Ferrite Core RBLN-0093GEZZY FB522 Ferrite Core RBLN-0093GEZZY FB523 Ferrite Core RBLN-0093GEZZY FB1101 Ferrite Core RBLN-A191WJZZY FB1102 Ferrite Core RBLN-A191WJZZY Ferrite Core FB3301 RBLN-A192WJZZY FB3302 Ferrite Core...
  • Page 54 LC-22DC30M PRICE PART PARTS CODE DESCRIPTION RANK MARK DELIVERY [3] DKEYMG073FM02 (MAIN Unit) Q7803 Transistor RSD050N06TL Q9604 Transistor RT1N141U-T112-1 VSRT1N141C/-1Y Q9605 Transistor RT1N141U-T112-1 VSRT1N141C/-1Y Q9606 Transistor 2SC3928A-T112V-1R VS2SC3928AR-1Y R101 Resistor 8.2k 1/16W Metal Oxide VRS-CZ1JF822JY Resistor 12k 1/16W Metal Oxide...
  • Page 55 LC-22DC30M PRICE PART PARTS CODE DESCRIPTION RANK MARK DELIVERY [3] DKEYMG073FM02 (MAIN Unit) R1132 Resistor 4.7k 1/16W Metal Oxide VRS-CZ1JF472JY R1133 Resistor 4.7k 1/16W Metal Oxide VRS-CZ1JF472JY R1138 Resistor 22k 1/16W Metal Oxide VRS-CZ1JF223JY R1143 Resistor 100 1/16W Metal Oxide...
  • Page 56 LC-22DC30M PRICE PART PARTS CODE DESCRIPTION RANK MARK DELIVERY [3] DKEYMG073FM02 (MAIN Unit) R3350 Resistor 4.7k 1/16W Metal Composition VRK-SA1JF472JY R3351 Resistor 4.7k 1/16W Metal Composition VRK-SA1JF472JY R3353 Resistor 10k 1/16W Metal Oxide VRS-CZ1JF103JY R3354 Resistor 33 1/16W Metal Oxide...
  • Page 57 LC-22DC30M PRICE PART PARTS CODE DESCRIPTION RANK MARK DELIVERY [3] DKEYMG073FM02 (MAIN Unit) R9616 Resistor 10k 1/16W Metal Oxide VRS-CZ1JF103FY R9618 Resistor 4.7k 1/16W Metal Oxide VRS-CZ1JF472JY R9619 Resistor 750 1/16W Metal Oxide VRS-CZ1JF751FY R9620 Resistor 1.6k 1/16W Metal Oxide...
  • Page 58 LC-22DC30M [4] CABINET AND MECHANICAL PARTS...
  • Page 59 LC-22DC30M PRICE PART PARTS CODE DESCRIPTION RANK MARK DELIVERY [4] CABINET AND MECHANICAL PARTS Front Cabinet Ass'y CCABAC854WJ01 Front Cabinet GCABAC854WJ4A LED Cover HDECQB681WJ4A Lens Himeron 20*10*t0.9 PSPAHB389WJ4Z Mask Himeron 270*7*0.35, x2 PSPAHC535WJ00 Mask Himeron 477*7*0.35, x2 PSPAHC536WJ00 Rear Cabinet Ass'y...
  • Page 60 LC-22DC30M [5] SUPPLIED ACCESSORIES Remote control unit "AAA" size battery (x 2) Operation manual Stand base Cable tie AC adaptor Screws (x 2) AC cord Warranty Card PRICE PART PARTS CODE DESCRIPTION RANK MARK DELIVERY [5] SUPPLIED ACCESSORIES Remote Control...
  • Page 61 LC-22DC30M [6] PACKING PARTS Not Replacement Item PRICE PART PARTS CODE DESCRIPTION RANK MARK DELIVERY [6] PACKING PARTS Packing Case (except for Indonesia) SPAKCG615WJZZ Packing Case (for Indonesia) SPAKCG653WJZZ Hoso PP SPAKPB556WJZZ Top Pad SPAKXD551WJZZ Bottom Pad SPAKXD552WJZZ Pack For Screw...
  • Page 62 LC-22DC30M...
  • Page 63 LC-22DC30M COPYRIGHT © 2012 BY SHARP CORPORATION ALL RIGHTS RESERVED. No Part of this publication may be reproduced, stored in a retrieval system, or transmitted in any from or by any means, electronic, mechanical, photocopying, recording, or otherwise, without prior written permission of the publisher.

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