Sharp LC-32A28L Service Manual
  1. Manuals
  2. Brands
  3. Sharp Manuals
  4. LCD TV
  5. LC-32A28L
  6. Service manual

Sharp LC-32A28L Service Manual

Lcd colour television
Hide thumbs
Table of Contents

Advertisement

Quick Links

In the interests of user-safety (Required by safety regulations in some countries) the set should be restored to its orig-
inal condition and only parts identical to those specified should be used.
SAFETY PRECAUTION
IMPORTANT SERVICE SAFETY PRE-
CAUTION ....................................................................2
CHAPTER 1. OPERATION MANUAL
[1] SPECIFICATIONS ..................................................4
[2] OPERATION MANUAL ...........................................5
[3] DIMENSIONS .......................................................12
[1] REMOVING OF MAJOR PARTS ..........................14
CHAPTER 3. ADJUSTMENT PROCEDURE
[1] ADJUSTMENT PROCEDURE .............................22
[2] SERVICE MODE ..................................................27
CHAPTER 4. TROUBLESHOOTING TABLE
[1] TROUBLESHOOTING TABLE..............................29
[1] MAJOR IC INFORMATIONS.................................42
CHAPTER 6. BLOCK DIAGRAM/WIRING DIAGRAM
[1] BLOCK DIAGRAM ................................................57
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.
SHARP CORPORATION

SERVICE MANUAL

LCD COLOUR TELEVISION
MODELS
CONTENTS
[3] WIRING DIAGRAM ..................................................59
CHAPTER 7. PRINTED WIRING BOARD
[1] MAIN UNIT PRINTED WIRING BOARD .................61
[3] KEY UNIT PRINTED WIRING BOARD ...................67
[4] IR UNIT PRINTED WIRING BOARD .......................68
[1] MAIN SCHEMATIC DIAGRAM ...............................69
[2] POWER SCHEMATIC DIAGRAM............................83
[3] KEY SCHEMATIC DIAGRAM................................ ..85
[4] IR SCHEMATIC DIAGRAM......................................86
..
28
[1] SPARE PARTS LIST................................................87
[2] CABINET PARTS ..................................................109
[3] SUPPLIED ACCESSOORIES................................113
[4] PACKING PARTS..................................................114
1
LC-32A28L, LC-42A48L
LC-32A28L
LC-42A48L
This document has been published to be used for
after sales service only.
The contents are subject to change without notice.
No.

Advertisement

Table of Contents
loading

Related Manuals for Sharp LC-32A28L

Summary of Contents for Sharp LC-32A28L

  • Page 1: Service Manual

    LC-32A28L, LC-42A48L SERVICE MANUAL LCD COLOUR TELEVISION LC-32A28L LC-42A48L MODELS In the interests of user-safety (Required by safety regulations in some countries) the set should be restored to its orig- inal condition and only parts identical to those specified should be used.

  • Page 2: Caution

    LC-32A28L, LC-42A48L SAFETY PRECAUTION 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: • Use an AC voltmeter having with 5000 ohm per volt, or higher, sen- ■...

  • Page 3: Precautions For Using Lead-Free Solder

    LC-32A28L, LC-42A48L Precautions for using lead-free solder 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.

  • Page 4: Chapter 1. Operation Manual 1] Specifications

    • 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...

  • Page 5: Operation Manual

    LC-32A28L, LC-42A48L [2] OPERATION MANUAL Remote control unit 1 POWER: Switch the power on or enters standby mode. 2 0–9: Set the channel. 3 • (DOT):No function. 4 SURROUND: Display the surround setting menu. 5 FREEZE: Set the still image. Press again to return to normal screen.
  • Page 6 LC-32A28L, LC-42A48L TV (Front view) TV (Rear view)
  • Page 7 LC-32A28L, LC-42A48L Preparation Attaching/Detaching the Stand • Before attaching (or detaching) the stand, unplug the AC cord from the AC INPUT terminal. • Before performing work spread cushioning over the base area to lay the TV on. This will prevent it from Being damaged.
  • Page 8 LC-32A28L, LC-42A48L How to turn on the television for the first time. (A) Press POWER on the television. (B) The POWER indicator on the front of the television lights GREEN. NOTE: • Speakers cannot be detached from the TV. Using the Remote Control Unit Use the remote control unit by pointing it towards the remote control sensor on the TV.
  • Page 9 LC-32A28L, LC-42A48L Preparation Antennas To enjoy a clearer picture, use an outdoor antenna. The following is a brief explanation of the types of connections that are used for a coaxial cable. If your outdorr antenna uses a 75-ohm coaxial cable with an F-type connector, plug it into the antenna terminal at the rear of the TV set.

  • Page 10: Information On The Software License For This Product

    Software composition The software included in this product is comprised of various software components whose individual copyrights are held by SHARP or by third parties. Software developed by SHARP and open source software The copyrights for the software components and various relevant documents included with this product that were developed or written by SHARP are owned by SHARP and are protected by the Copyright Act, international treaties, and other relevant laws.

  • Page 11: Legal Notices

    LC-32A28L, LC-42A48L Enter a new PIN. NOTE: As a precautionary measure, make a note of your secret number above, cut it from this manual, and keep it in a safe place. Legal notices HDMI HDMI, the HDMI logo, and High-Definition Multimedia Interface are trademarks or registered trademarks of HDMI Licensing LLC.

  • Page 12: Dimensions

    LC-32A28L, LC-42A48L [3] DIMENSIONS Dimension for 32”...
  • Page 13 LC-32A28L, LC-42A48L Dimension for 42” 2008-03-14...

  • Page 14: Chapter 2. Removing Of Major Parts 1] Removing Of Major Parts

    LC-32A28L, LC-42A48L CHAPTER 2. REMOVING OF MAJOR PARTS [1] REMOVING OF MAJOR PARTS(LC-32A28L) 1. Assy/Panel Removal Notes: Please put your machine on soft material to avoid to scrape panel when you disassemble it. Front view Fig.1 Back view Fig.2 Step 1. Remove the Base Assy.
  • Page 15 LC-32A28L, LC-42A48L Fig.4 2. Remove the 4 screws. Detach the Neck as Fig.4. Step 2. Remove the REAR COVER Assy. 1. Remove the 13 screws. Detach the REAR COVER as Fig.5. Fig.5 Step 3. Remove the Main, Power board and the Speakers.
  • Page 16 LC-32A28L, LC-42A48L Fig.7 Fig.8 2. Remove the 5 screws and disconnect 1 cable. Detach the Power board as Fig.9. Fig.9 3. Remove the 4 screws. Detach the Speakers as Fig.10. Fig.10 Step 4. Remove the Bracket and Bezel. 1. Remove the 9 screws. Detach the Bracket as Fig.11.
  • Page 17 LC-32A28L, LC-42A48L Fig.12 Panel: Fig.13 Step 5. Remove the IR and Key board. 1. Remove the 2 screws and disconnect 1 cable. Detach the IR board as Fig.14. Fig.14 2. Disconnect 1 cable. Detach the Key board as Fig.15. Fig.15 2.
  • Page 18 LC-32A28L, LC-42A48L REMOVING OF MAJOR PARTS(LC-42A48L) 1. Assy/Panel Removal Notes: Please put your machine on soft material to avoid to scrape panel when you disassemble it. Front view Fig.1 Back view Fig.2 Step 1. Remove the Base Assy. 1. Remove the base as Fig.3.
  • Page 19 LC-32A28L, LC-42A48L Fig.4 2. Remove the 4 screws. Detach the Neck as Fig.4. Step 2. Remove the REAR COVER Assy. 1. Remove the 18 screws. Detach the REAR COVER as Fig.5. Fig.5 Step 3. Remove the Main, Power board and the Speakers.
  • Page 20 LC-32A28L, LC-42A48L Fig.9 3. Remove the 4 screws. Detach the Speakers as Fig.10. Fig.10 Step 4. Remove the Bracket and Bezel. 1. Remove the 19 screws and disconnect 1 cable. Detach the Bracket and LVDS cable as Fig.11. Fig.11 2. Remove the 6 screws . Detach the Bezel as Fig.12 and Fig.13.
  • Page 21 LC-32A28L, LC-42A48L Panel: Fig.13 Step 5. Remove the IR and Key board. 1. Remove the 1 screws and disconnect 1 cable. Detach the IR board as Fig.14. Fig.14 2. Disconnect 1 cable. Detach the Key board as Fig.15. Fig.15 2. Set Re-assembly To re-assemble the whole set, execute all processes in reverse order.

  • Page 22: Osd Menu

    LC-32A28L, LC-42A48L CHAPTER 3. ADJUSTMENT PROCEDURE PROCEDURE [1] ADJUSTMENT PROCEDURE 1. OSD Menu 2010 LATAM OSD tree Widget Attributes Default Pre- Input Region Type conditions Level 1 Level 2 Level 3 Level 4 Level 5 Video/ Latam HDMI Video Submenu...
  • Page 23 LC-32A28L, LC-42A48L Bass Slider 0~50~100 Treble Slider 0~50~100 Sound List On/Off Surround Equalizer List Off/Rock/PoP/Live/Dance/Techn o/Classic/Soft Speaker List On/Off Auto List On/Off Volume Control Submenu pin code Tuner Mode List Cable Cable/Air Auto CH Submenu search CH Skip Submenu Channel list...
  • Page 24 LC-32A28L, LC-42A48L Password Edit 0000 Channel List gray out Channel list Block except TV input Program List Block Rating Enable List On/Off U.S. TV Submenu None/TV-Y/TV-Y7/TV-G/TV- Add None Ratings PG/TV-14/TV-MA rating U.S. Movie Submenu G/PG/PG-13/R/NC-17/X Ratings Block Unrated List On/Off...

  • Page 25: Display Adjustment

    LC-32A28L, LC-42A48L 2. Display adjustment White Balance adjustment Only adjust YPbPr Mode and copy to all of input source General set-up : Equipment Requirements: Minolta CA-210 or Equivalent Color analyzer Astor Pattern Generator VG-848 , VG-859 or equivalent instrument. An internal full white pattern is available in the MT5305 platform, you can use the internal pattern to replace Astor Pattern Generator VG-848.
  • Page 26 LC-32A28L, LC-42A48L 17. Adjust the 20. Scaler R GAIN, 22. Scaler B GAIN values to meet “Warm” color coordinates specification below. (Please keep 21. Scaler G GAIN at 0) 18. Apply RGB Full white pattern and change signal level to 48 (20% white pattern) (18) If use internal pattern, set level to 204 (20% white pattern).

  • Page 27: Service Mode

    LC-32A28L, LC-42A48L [2] SERVICE MODE Enter factory mode menu: press MENU + Numeric keys “1999” to enter factory mode. 2008-03-14...
  • Page 28 LC-32A28L, LC-42A48L [3] SOFTWARE UPGRADE PROCEDURE Sharp model Firmware upgrade SOP by USB flash drives Flow chart Step Photo Remark 1. Equipment and Need USB2.0 1、USB flash drives(need USB2.0) warm-up 2、Upgrade firmware 2.Upgrade step 1、 Copy the firmware from your computer to the USB flash drives.
  • Page 29 LC-32A28L, LC-42A48L CHAPTER 4. TROUBLESHOOTING TABLE [1] 32” TROUBLESHOOTING TABLE Power unit operation check. ↓ Are the power cord and harness in the unit properly connected? Connect the power cord and harness properly, and turn on the power. ↓ YES...
  • Page 30 LC-32A28L, LC-42A48L The sound is not emitted from the speaker though the picture has come out. ↓ No sound output in all modes? ↓ TEREMINAL UNIT: Is the audio signal output of pin (117) (AOSDATA0), pin (118) Check IC U401 and its peripheral circuits.
  • Page 31 LC-32A28L, LC-42A48L No sound from external input devices (1) ↓ Does not the sound of the audio signal input to input2(Component) go out? Does not the sound of the audio signal input to input3(Component) go out? ↓ MAIN UNIT: Is the audio signal properly sent to pin (8) (YPBPR_L_IN2) and pin Check the connection to CN103 and the external input device.
  • Page 32 LC-32A28L, LC-42A48L No sound from external input devices (4) ↓ Does not the sound of the audio signal input to HDMI1/2 go out? ↓ Is picture of the signal input from HDMI1/2 displayed? Refer to “Does not the picture of the HDMI signal input to HDMI1/2 go out?”.
  • Page 33 LC-32A28L, LC-42A48L No picture on the display (3) ↓ Does not the picture come out when VHF/UHF is received? ↓ MAIN_UNIT: Is the voltage of regulation for a TUNER circuit and the power Each power supply circuit is checked. supply terminal of IC U401 supplied? ↓YES...
  • Page 34 LC-32A28L, LC-42A48L <External input HDMI2>No picture on the display (10) ↓ Does not the picture of the HDMI signal input to Input6(HDMI2) go out? ↓ MINI AV_UNIT: Is the HOT_PLUG detection function of pin (19) of a HDMI terminal Check the line between pin (41) of IC U409 and CN502.
  • Page 35 LC-32A28L, LC-42A48L <External input Input2&3(Component)>No picture on the display (13) ↓ Does not the picture of the component video signal input to Component go out? ↓ TERMINAL_UNIT: Is Component Y/Pb/Pr signal sent to pin (2)/Y, (4)/Pb, (6)/Pr of Check the setting of an external input device that connects of AV1(CN103) ? CN103.
  • Page 36 LC-32A28L, LC-42A48L 42” TROUBLESHOOTING TABLE Power unit operation check. ↓ Are the power cord and harness in the unit properly connected? Connect the power cord and harness properly, and turn on the power. ↓ YES LINE_FILTER_UNIT: Is F901 and F902 normal? LINE_FILTER_UNIT: Isn't L901,L902,RV902,RV904,C908,C909,, etc.
  • Page 37 LC-32A28L, LC-42A48L The sound is not emitted from the speaker though the picture has come out. ↓ No sound output in all modes? ↓ TEREMINAL UNIT: Is the audio signal output of pin (117) (AOSDATA0), pin (118) Check IC U401 and its peripheral circuits.
  • Page 38 LC-32A28L, LC-42A48L No sound from external input devices (1) ↓ Does not the sound of the audio signal input to input2(Component) go out? Does not the sound of the audio signal input to input3(Component) go out? ↓ MAIN UNIT: Is the audio signal properly sent to pin (8) (YPBPR_L_IN2) and pin Check the connection to CN103 and the external input device.
  • Page 39 LC-32A28L, LC-42A48L No sound from external input devices (4) ↓ Does not the sound of the audio signal input to HDMI1/2 go out? ↓ Is picture of the signal input from HDMI1/2 displayed? Refer to “Does not the picture of the HDMI signal input to HDMI1/2 go out?”.
  • Page 40 LC-32A28L, LC-42A48L No picture on the display (3) ↓ Does not the picture come out when VHF/UHF is received? ↓ MAIN_UNIT: Is the voltage of regulation for a TUNER circuit and the power Each power supply circuit is checked. supply terminal of IC U401 supplied? ↓YES...
  • Page 41 LC-32A28L, LC-42A48L <External input HDMI2>No picture on the display (10) ↓ Does not the picture of the HDMI signal input to Input6(HDMI2) go out? ↓ MINI AV_UNIT: Is the HOT_PLUG detection function of pin (19) of a HDMI terminal Check the line between pin (41) of IC U409 and CN502.

  • Page 42: Chapter 5. Major Ic Informations 1] Major Ic Informations

    LC-32A28L, LC-42A48L CHAPTER 5. MAJOR IC INFORMATIONS [1] MAJOR IC INFORMATIONS 1. MAJOR IC INFORMATIONS 1.1. U401 (MT5305AJMU LQFP-256) GENERAL DESCRIPTION The MediaTek MT5305AJMU family is a backend decoder and a ready TV controller and offers high integration for advanced applications. It combines a high definition video decoder, an AC3 audio decoder, a dual-link LVDS transmitter, and an NTSC/PAL/SECAM TV decoder with a 3D comb filter (NTSC/PAL).
  • Page 43 LC-32A28L, LC-42A48L Image Resizer Supports 16bpp/32bpp direct color format Supports 420/422 video format. Supports 420/422/444 JPEG format. Arbitrary ratio vertical/horizontal scaling of video, from 1/128X to 128X Simple DMA. OSD Plane Two linking list OSDs with multiple color mode and one of them has up-scaler Video Plane Supports video freeze and over scan.
  • Page 44 LC-32A28L, LC-42A48L Support 4-pair L/R input Audio digital input 1 bit (2 channel) I2S audio input HDMI Receiver HDMI1.3, data rate can be up to 2.25 GHz EIA/CEA-861B Video bypass ATVbypass TV audio demodulator Supports BTSC / EIA-J / A2 / NICAM / PAL FM / SECAM world-wide formats...
  • Page 45 LC-32A28L, LC-42A48L Supports boundary scan (JTAG) IC Outline The MT5305AJMU is 256-pin LQFP 3.3V/1.1V and 1.8V for DDR2 1.2. U404 (NT5TU32M16CG-25C 512MB BGA-84) Features • 1.8V ± 0.1V Power Supply Voltage • Programmable CAS Latency: 3, 4, 5, and 6 •...
  • Page 46 LC-32A28L, LC-42A48L Features • Four-input, single-output HDMI port processor • Improved ESD protection on all signals connected to HDMI connector • Integrated TMDS receiver and transmitter cores capable of receiving and transmitting at 2.25 Gbps: • Supports video resolutions up to 1080p, 60 Hz, 12-bit or 720p/1080i, 120 Hz, 12-bit •...
  • Page 47 LC-32A28L, LC-42A48L • MP3 docking systems • Powered speaker • Wireless audio • USB speaker Description This is a stereo (8Ω)/mono (4Ω) fully digital audio amplifier with output power which can drive up to 2x12W for stereo or 1x24W for mono at 24V supply voltage, no external heat-sink or fan is requirement.
  • Page 48 LC-32A28L, LC-42A48L 2. Detailed ICs Information 2.1. U401 (MT5305AJMU LQFP-256) 2.1.1 Block Diagram CVBS/ HDMI Audio CVBS YC Input Input Panel VDAC LVDS DDR2 Audio Audio HDMI In VADCx4 ATSC DRAM Demod Controller Decoder Mix and Post Audio In Processing...
  • Page 49 LC-32A28L, LC-42A48L 2.1.2 Pin Connections and short description PDD0 192 VCC2IO POCE0 191 RCLK0 POOE 190 RCLK0 GPIO0 189 RDQ5 JTDO 188 RDQ2 JTCK 187 VCC2IO JTRST 186 RDQ0 OPWM2 185 RDQ7 USB PWR ERR0 184 RDQ13 USB PWR EN0...
  • Page 50 LC-32A28L, LC-42A48L 2.2. U404 (NT5TU32M16CG-25C 512MB BGA-84) 2.2.1 Block Diagram 2.2.2 Pin Connections and short description...
  • Page 51 LC-32A28L, LC-42A48L Input/Output Functional Description Symbol Type Function Clock: CK and CK are differential clock inputs. All address and control input signals are sampled CK, CK Input on the crossing of the positive edge of CK and negative edge of CK. Output (read) data is refer- enced to the crossings of CK and CK (both directions of crossing).
  • Page 52 LC-32A28L, LC-42A48L 2.3. U409 (SII9187ACNU QFN-72) 2.3.1 Block Diagram 2.3.2 Pin Connections and short description R1XCN CSCL R1XCP CSDA R1X0N R1X0P CEC_D R1X1N CEC_A R1X1P R4PWR5V R1X2N DSCL4 R1X2P DSDA4 VCC33 R3PWR5V RSVDL SiI9187A HPD3 R2XCN DSCL3 Top view R2XCP...
  • Page 53 LC-32A28L, LC-42A48L Pin Listings HDMI Receiver Pin Name Type Description R0X0P TMDS Input TMDS input Port 0 data pairs. R0X0N R0X1P R0X1N R0X2P R0X2N R0XCP TMDS Input TMDS input Port 0 clock pair. R0XCN R1X0P TMDS Input TMDS input Port 1 data pairs.
  • Page 54 LC-32A28L, LC-42A48L Configuration Pins Pin Name Type Description TPWR_CI2CA LVTTL Input C Slave Address input / Transmit Power Sense Output. 8 mA Output At the end of power-on-reset (POR), this pin is used as an input to latch the 5-V tolerant C sub-address.
  • Page 55 LC-32A28L, LC-42A48L 2.4. U602 (AD82581B-LEG LQFP-48 12W) 2.4.1 Block Diagram 2.4.2 Pin Connections and short description Pin Descriptions NAME DESCRIPTION CHARACTERISTICS TYPE N.C. N.C. PLL enable, low active Schmitt trigger TTL input buffer MCLK Master clock input Schmitt trigger TTL input buffer...
  • Page 56 LC-32A28L, LC-42A48L Error status Open-drain output ERROR Reset, low active Schmitt trigger TTL input buffer RESET C select address 0 Schmitt trigger TTL input buffer C select address 1 Schmitt trigger TTL input buffer C serial clock input Schmitt trigger TTL input buffer...

  • Page 57: Chapter 6. Block Diagram/Wiring Diagram 1] Block Diagram

    LC-32A28L, LC-42A48L CHAPTER 6. BLOCK DIAGRAM/WIRING DIAGRAM [1] BLOCK DIAGRAM IFT IN+/- ADCINN(P) TU102 _DEMOD 32" WXGA Tuner LG To Panel TDVW-H810F 42" FHD U404 DDR2 x 1 32MB x 16 Side I/O CVBS CVBS0P U605 SPI Flash USB P/M...

  • Page 58: Lc-32A28L, Lc-42A48L 2] Power Management Block Diagram

    LC-32A28L, LC-42A48L [2] POWER MANAGEMENT BLOCK DIAGRAM g i l g i l g i l g i l...

  • Page 59: Wiring Diagram

    LC-32A28L, LC-42A48L [3] 32” WIRING DIAGRAM(LC_32A28L(CMO)) 095G801840X910 CN903 CN902 CN602 CN110 CN701 CN406 POWER BOARD MAIN BOARD 095G801413X937 2008-03-14...

  • Page 60: Power Board

    LC-32A28L, LC-42A48L 42” WIRING DIAGRAM(LC_42A48L(CMO)) 095G801851X925 CN902 CN905 CN602 CN701 CN110 CN406 POWER BOARD MAIN BOARD 095G801314X904...

  • Page 61: Chapter 7. Printed Wiring Board 1] Main Unit Printed Wiring Board

    LC-32A28L, LC-42A48L CHAPTER 7. PRINTED WIRING BOARD [1] MAIN UNIT PRINTED WIRING BOARD MAIN UNIT(Side-A) 2008-03-14...
  • Page 62 LC-32A28L, LC-42A48L MAIN UNIT(Side-B)

  • Page 63: Power Unit Printed Wiring Board

    LC-32A28L, LC-42A48L [2] POWER UNIT PRINTED WIRING BOARD 32” POWER UNIT(Side-A) 2008-03-14...
  • Page 64 LC-32A28L, LC-42A48L 32” POWER UNIT(Side-B)
  • Page 65 LC-32A28L, LC-42A48L 42” POWER UNIT(Side-A) 2008-03-14...
  • Page 66 LC-32A28L, LC-42A48L 42” POWER UNIT(Side-B)

  • Page 67: Key Unit Printed Wiring Board

    LC-32A28L, LC-42A48L [3] KEY UNIT PRINTED WIRING BOARD KEY UNIT (Side-A) KEY UNIT (Side-B) 2008-03-14...

  • Page 68: Ir Unit Printed Wiring Board

    LC-32A28L, LC-42A48L [4] IR UNIT PRINTED WIRING BOARD IR UNIT (Side-A) IR UNIT (Side-B)

  • Page 69: Chapter 8. Schematic Diagram 1] Main Schematic Diagram

    LC-32A28L, LC-42A48L CHAPTER 8. SCHEMATIC DIAGRAM [1] MAIN SCHEMATIC DIAGRAM 01. SYSTEM POWER INVERTER_ON_OFF INVERTER_ON_OFF: CN701 BRIGHT_ADJ Normal: High +12V +24VSB +5VSB FB134 300OHM +5VSB Stand_By: Low +24V +12V +12V FB104 300OHM FB102 300OHM +3V3SB +3V3SB DV33 DV33 FB105 300OHM...
  • Page 70 LC-32A28L, LC-42A48L 02. MT5305 PERIPHERAL LVDS USB_PWR_EN0 LVDS_POWER_ON USB_PWR_EN0 LVDS_POWER_ON USB_PWR_ERR0 LVDS_CTRL2 USB_PWR_ERR0 LVDS_CTRL2 USB_DM0 USB_DM0 USB_DP0 TP_VPLL USB_DP0 TP_VPLL AVDD33_USB AVDD33_USB USB_VRT USB_VRT LVDS_CTRL1 LVDS_CTRL1 OXTALO OXTALO OXTALI OXTALI AVDD33_XTAL_STB AVDD33_XTAL_STB ASPDIF OCKN U401 ASPDIF OCKN U0RX OCKP U0RX...
  • Page 71 LC-32A28L, LC-42A48L 03. DDR2 DRAM DDR#1 DDR#2 MT5388 AV12_MEMPLL AV125 DRAM POWER DDRV RVREF RVREF RVREF AV125 DV33 DV33 AV125 DV33 U402 DDRV DDRV DDRV DDRV R405 AVDD12_MEMPLL R406 0R01 1/10W VOUT 0R05 4A 1/4W R407 R408 R409 C426 C427...
  • Page 72 LC-32A28L, LC-42A48L 04. PERIPHERAL 54MHz CRYSTAL USB PORT 0 +5VSB +5VSB +3V3SB D506 D507 +3V3SB DV33 NEAR IC BAV99 BAV99 DV33 +3V3SB X401 +5VSB AV33 AV33 AVDD33_XTAL_STB AV125 R423 AV125 OXTALI OXTALO 0R01 1/10W DV33 U0RX Near Connector U0RX U0TX...
  • Page 73 LC-32A28L, LC-42A48L 05. FLASH/TRAP DV33 +3V3SB R464 +3V3SB DV33 4.7K 1/16W DV33 OPWM0 SMD/0402 Serial Flash OPWM0 ASPDIF ASPDIF FRESET# U605 OPCTRL3 OPCTRL3 NC/MX25L6405DMI-12G ORESET# ORESET# DV33 POOE# GPIO1 U408 HOLD SCLK GPIO1 DV33 PDD1 POCE0# SI/SIO0 POCE0# POCE0# DV33...
  • Page 74 LC-32A28L, LC-42A48L 06. HDMI CONNECT RPWR0 RPWR1 RPWR1 D532 D533 RPWR0 RPWR1 +3V3SB RPWR1 +3V3SB RPWR0 R502 R503 RPWR0 47K 1/10W 47K 1/10W CN502 R507 R508 BAV70 BAV70 47K 1/10W 47K 1/10W HP DET HPD1 CN501 DDC DATA DSDA_1 HPD0...
  • Page 75 LC-32A28L, LC-42A48L 07. SiI9287 HDMI SWITCH DV33 PCB LAYOUT: Place all decoupling FB135 capacitors (0.1uf)as close to the pin as 600R/500mA possible. FB136 C501 AV33 1uF 25V 600R/500mA NEARLY IC C502 C503 C504 C505 C506 C507 C508 Close to U409...
  • Page 76 LC-32A28L, LC-42A48L 08. YPbPr/VGA Input VGA CONNECTOR NEARLY VGA CON. NEARLY IC D509 VGA_PLUGPWR VGA EEPROM BAS316 C130 1.5nF 50V SMD/0402 CN107 R133 C131 R134 R135 FB109 80 OHM 68R 1/16W 5% 10N 50V R136 10K 1/16W 5% +5VSB DB15...
  • Page 77 LC-32A28L, LC-42A48L 09. AV & DVD AV2(CVBS)_Audio R/L(SIDE) CN105 AV2_IN NEARLY AV CON. NEARLY IC AVDD33_CVBS AVDD33_CVBS +12V +12V C171 AV2_AudioLIN L102 AV1_IN CVBS1P CVBS1P R184 R185 CVBS1P CVBS0N NC/0R05 1/16W 100R 1/16W 5% CVBS0N NC/0.1uH SMD/0402 SMD/0402 47N 16V...
  • Page 78 LC-32A28L, LC-42A48L 10. LINE OUT Near IC AV33 AV33 Near IC L613 +3V3SB +3V3SB R601 AVDD33_AADC REFP_AADC AVDD33_DAC AV33 US monitor Out( Line Out ) AV33 0R01 1/10W 22uH +-25% +12V +12V C601 C602 DV33 DV33 100N 16V C603 470UF 16V...
  • Page 79 LC-32A28L, LC-42A48L 11. Speaker / HP Speaker Amplifier I2S Class D SPEAKER OUTPUT +5VSB +5VSB +24V +24V AMP_LA SPK_L+ +12V PWRAMP L601 +12V FB130 120R/6000mA 22uH +-25% DV33 DV33 AV33 AV33 C683 C646 SPEAKER C684 C693 1N 50V C682 0.1uF 50V...
  • Page 80 LC-32A28L, LC-42A48L 12. LVDS +12V CN110 +12V AV33 AV33 DV33 DV33 AV125 AV125 LVDS_PWR_ON LVDS_POWER_ON DV33 OCKN ECKN OCKP ECKP DV33 OCKP OCKP OCKN OCKN OSDA0 OSCL0 R774 NC/0R05 1/16W R775 NC/0R05 1/16W R776 NC/0R01 1/10W SMD/0402 SMD/0402 R227 NC/0R01 1/10W...
  • Page 81 LC-32A28L, LC-42A48L 13. TUNER LG Tuner PANASONIC Tuner TU101 +12V TU102 TUNER +12V +5V_TUNER NC/TUNER AV33 AV33 5V_T 5V_T RF-AGC Monitor FB122 80 OHM IF_AGCT RF AGC IF_AGCT C213 TUNER_CLK TUNER_CLK tuner_sda_T 0.1uF 50V C218 TUNER_DATA BT Monitor TUNER_DATA tuner_scl_T...
  • Page 82 LC-32A28L, LC-42A48L 14. RS232/IR LINK OIRI_IRboard OIRI_IRboard OIRI OIRI U0RX U0RX U0TX ZD411 U0TX NC/VPORT0603100KV05 +5VSB RS232 +5VSB +5VSB +3V3SB U607 +3V3SB U0TX TXD_12 T1IN T1OUT T2IN T2OUT R737 U0RX RXD_12 R1OUT R1IN NC/1K 1/16W U606 R2OUT R2IN 232_C2+ 232_C1+...

  • Page 83: Power Schematic Diagram

    LC-32A28L, LC-42A48L [2] 32” POWER SCHEMATIC DIAGRAM D985 STTH5L06FP FB904 FB905 +400V 1N5408-P D902 BEAD HBD901 C907 Heatsink C910 100uF 450V 1U5 450V C953 1500PF 1KV +400V ER28 L906 HD935 BD901 VCC_PFC TK12A60U Heatsink Q901 FB980 KBJ608G BAV103 C984 D903...
  • Page 84 LC-32A28L, LC-42A48L 42” POWER SCHEMATIC DIAGRAM FB922 BEAD F902 SG901 SG903 150K 1/4W GS41-201MA GS41-201MA R960 KBJ608G C903 C900 T5AH-250V C905 BD901 100pF 250V FB965 BEAD C901 C907 0.001uF/250V FB903 150uF M 450V 1500PF250V 1500PF250V L901 L902 BEAD C911 HBD901...

  • Page 85: Key Schematic Diagram

    LC-32A28L, LC-42A48L [3] KEY SCHEMATIC DIAGRAM MENU SOURCE POWER 1.04V 2.44V 1.73V CN016 SW016 SW022 SW021 Key 1 key 2 TACT SW FWRD H1.5MM TACT SW FWRD H1.5MM TACT SW FWRD H1.5MM CONN C018 C017 C016 C024 C023 NC/100N 50V...

  • Page 86: Ir Schematic Diagram

    LC-32A28L, LC-42A48L [4] IR SCHEMATIC DIAGRAM...

  • Page 87: Parts Guide

    1053 KEPF9AB7 9JR9900000056 KEY PCB ASSY 1054 IRPF9PB3 9JR9900000035 IR PCB ASSY 1172 089G214A21NLSS 9JR8900000014 SHARP-ASSIGN AC POWER CORD 2100mm 1176 098TR7BD1NESHD 9JR9800000001 REMOTE CONTROL GA695WJSA 1185 078G0050 3 M 9JR7800000015 SPEAKER 8 OHM 5W 800/400mm 135X41mm 8391 095G801413X937 9JR9500000081...
  • Page 88 LC-32A28L, LC-42A48L C111 067G215C101 4H 9JR6700000210 CAP 105℃ 100UF M 25V C113 067G 515471 3C 9JR6700000128 EC 470UF 16V GF 10*12.5mm C114 065G060310522K T 9JR6500000399 CAP CHIP 0603 1UF K 25V X7R C115 065G0805475A2K T 9JR6500000295 CAP CHIP 4U7 10V X7R 10%...
  • Page 89 LC-32A28L, LC-42A48L C230 065G060310432K A 9JR6500000398 CAP CHIP 0603 100nF K 50V X7R C233 065G040210412K A 9JR6500000391 CAP CHIP 0402 100nF K 16V X7R C235 065G040210412K A 9JR6500000391 CAP CHIP 0402 100nF K 16V X7R C401 065G0805475A2K T 9JR6500000295 CAP CHIP 4U7 10V X7R 10%...
  • Page 90 LC-32A28L, LC-42A48L C474 065G060333031J A 9JR6500000403 CAP 0603 33PF 50V NPO C475 065G0402224A5K Y 9JR6500000342 CAP CHIP 0402 220N 10V X5R +/-10% C479 065G040210412K A 9JR6500000391 CAP CHIP 0402 100nF K 16V X7R C480 065G040210412K A 9JR6500000391 CAP CHIP 0402 100nF K 16V X7R...
  • Page 91 LC-32A28L, LC-42A48L C687 065G060310232K A 9JR6500000397 CAP CHIP 0603 1000pF K 50V X7R C688 065G060310432K A 9JR6500000398 CAP CHIP 0603 100nF K 50V X7R C689 065G060310432K A 9JR6500000398 CAP CHIP 0603 100nF K 50V X7R C690 065G060310232K A 9JR6500000397 CAP CHIP 0603 1000pF K 50V X7R...
  • Page 92 LC-32A28L, LC-42A48L FB105 071G 56G301 TA 9JR7100000064 CHIP BEAD 300OHM 4000mA HCB2012KF-301T40 FB106 071G 56A221 TA 9JR7100000039 IND FXD 0805 EMI 100MHZ 220R R FB107 071G 56A221 TA 9JR7100000039 IND FXD 0805 EMI 100MHZ 220R R FB108 071G 57U330 TA...
  • Page 93 LC-32A28L, LC-42A48L R109 061G0603100 JI 9JR6100000846 TEST ONLY RST 0603 10R 5% 1/16W TA-I R111 061G0603272 JF 9JR6100000858 RST CHIPR 2.7KOHM 5% 1/10W FENGHUA R112 061G06031801FF 9JR6100000853 RST CHIPR 1.8KOHM +-1% 1/10W FENGHUA R113 061G0603101 JI 9JR6100000849 TEST ONLY RST 0603 100R 5% 1/16W TA-I...
  • Page 94 LC-32A28L, LC-42A48L R183 061G0603000 FI 9JR6100000845 TEST ONLY RST 0603 0.01R MAX 1/10W TA-I R185 061G0402101 JI 9JR6100000834 TEST ONLY RST 0402 100R 5% 1/16W TA-I R186 061G04027509FI 9JR6100000844 TEST ONLY RST 0402 75R 1% 1/16W TA-I R187 061G0402101 JI...
  • Page 95 LC-32A28L, LC-42A48L R449 061G0603512 JI 9JR6100000868 TEST ONLY RST 0603 5.1K 5% 1/16W TA-I R450 061G06031002FI 9JR6100000848 TEST ONLY RST 0603 10K 5% 1/16W TA-I R451 061G06033901FT 9JR6100000008 RST CHIP 3K9 1/10W 1% R456 061G0402101 JI 9JR6100000834 TEST ONLY RST 0402 100R 5% 1/16W TA-I...
  • Page 96 LC-32A28L, LC-42A48L R679 061G12060004JF 9JR6100000872 RST CHIPR MAX0R05 4A 1/4W FENGHUA R680 061G06032002FT 9JR6100000855 RST CHIP 20K 1/10W 1% R681 061G06032202FT 9JR6100000474 RST CHIP 22K 1/10W 1% R682 061G06034701FF 9JR6100000863 RST CHIPR 4.7KOHM +-1% 1/10W FENGHUA R688 061G0603000 FI 9JR6100000845 TEST ONLY RST 0603 0.01R MAX 1/10W TA-I...
  • Page 97 LC-32A28L, LC-42A48L U406 056G 643 41 9JR5600000166 IC APX809-29SAG-7 SOT23 U407 705TZ95656A 9JR7050000141 EEPROM Assy(U407) U408 705TZ95655A 9JR7050000140 NOR Flash Assy (U408) U409 056G 634 25 9JR5600000165 IC SII9187ACNU QFN-72 U601 056G 616 55 9JR5600000163 IC DRV602PWR 870mW TSSOP-14 U602...
  • Page 98 1054 IRPF9PB3 9JR9900000035 IR PCB ASSY 1085 078G0120 17 M 9JR7800000016 SPEAKER 16 OHM 12W 770/360mm 126X37mm 1172 089G214A21NLSS 9JR8900000014 SHARP-ASSIGN AC POWER CORD 2100mm 1176 098TR7BD1NESHD 9JR9800000001 REMOTE CONTROL GA695WJSA 8391 095G801314X904 9JR9500000095 HARNESS 14P-3P+5P 1030mm 8750 095G801851X925 9JR9500000100...
  • Page 99 LC-32A28L, LC-42A48L C117 065G060310432K Y 9JR6500000251 CAP CHIP 0603 0.1UF K 50V X7R C118 067G215S4713KV 9JR6700000108 EC 105℃ CAP 470UF M 16V C119 065G060310432K Y 9JR6500000251 CAP CHIP 0603 0.1UF K 50V X7R C123 067G215C101 4H 9JR6700000210 CAP 105℃ 100UF M 25V...
  • Page 100 LC-32A28L, LC-42A48L C402 065G0805475A2K 3 9JR6500000207 CAP CHIP 4.7UF 10V X7R +/- 10% C403 065G060310525K 3 9JR6500000442 MLCC 0603 1uF 25V X5R +/-10% C404 065G040210412K A 9JR6500000391 CAP CHIP 0402 100nF K 16V X7R C405 065G040210412K A 9JR6500000391 CAP CHIP 0402 100nF K 16V X7R...
  • Page 101 LC-32A28L, LC-42A48L C482 065G040210412K A 9JR6500000391 CAP CHIP 0402 100nF K 16V X7R C483 065G040210412K A 9JR6500000391 CAP CHIP 0402 100nF K 16V X7R C485 065G040210412K A 9JR6500000391 CAP CHIP 0402 100nF K 16V X7R C486 065G040210412K A 9JR6500000391 CAP CHIP 0402 100nF K 16V X7R...
  • Page 102 LC-32A28L, LC-42A48L C691 065G060310232K Y 9JR6500000431 CAP CHIP 0603 1N 50V X7R +/-10% C692 065G060310432K Y 9JR6500000251 CAP CHIP 0603 0.1UF K 50V X7R C693 065G080582332K Y 9JR6500000407 CAP CHIP 0805 82N 50V X7R +/-10% C694 065G060310232K Y 9JR6500000431 CAP CHIP 0603 1N 50V X7R +/-10%...
  • Page 103 LC-32A28L, LC-42A48L FB109 071G 59C800 TA 9JR7100000066 CHIP BEAD 80R 400mA FCM16008CF-800T04 FB110 071G 59C800 TA 9JR7100000066 CHIP BEAD 80R 400mA FCM16008CF-800T04 FB111 071G 59C800 TA 9JR7100000066 CHIP BEAD 80R 400mA FCM16008CF-800T04 FB112 071G 59C800 TA 9JR7100000066 CHIP BEAD 80R 400mA FCM16008CF-800T04...
  • Page 104 LC-32A28L, LC-42A48L R114 061G06034701FF 9JR6100000863 RST CHIPR 4.7KOHM +-1% 1/10W FENGHUA R115 061G0402472 JI 9JR6100000841 TEST ONLY RST CHIP 4.7K 5% 1/16W TA-I R116 061G0603102 JI 9JR6100000850 TEST ONLY RST 0603 1K 5% 1/16W TA-I R117 061G0603103 JI 9JR6100000851 TEST ONLY RST 0603 10K 5% 1/16W TA-I...
  • Page 105 LC-32A28L, LC-42A48L R188 061G0402000 JI 9JR6100000833 TEST ONLY RST 0402 0.05R MAX 1/16W TA-I R189 061G0402101 JI 9JR6100000834 TEST ONLY RST 0402 100R 5% 1/16W TA-I R190 061G04027509FI 9JR6100000844 TEST ONLY RST 0402 75R 1% 1/16W TA-I R191 061G0603303 JT...
  • Page 106 LC-32A28L, LC-42A48L R458 061G0402101 JI 9JR6100000834 TEST ONLY RST 0402 100R 5% 1/16W TA-I R459 061G0603101 JI 9JR6100000849 TEST ONLY RST 0603 100R 5% 1/16W TA-I R460 061G0402101 JI 9JR6100000834 TEST ONLY RST 0402 100R 5% 1/16W TA-I R462 061G0402101 JI...
  • Page 107 LC-32A28L, LC-42A48L R682 061G06034701FF 9JR6100000863 RST CHIPR 4.7KOHM +-1% 1/10W FENGHUA R688 061G0603000 FI 9JR6100000845 TEST ONLY RST 0603 0.01R MAX 1/10W TA-I R690 061G0603000 FI 9JR6100000845 TEST ONLY RST 0603 0.01R MAX 1/10W TA-I R691 061G0603472 JI 9JR6100000865 TEST ONLY RST 0603 4.7K 5% 1/16W TA-I...
  • Page 108 LC-32A28L, LC-42A48L U409 056G 634 25 9JR5600000165 IC SII9187ACNU QFN-72 U601 056G 616 55 9JR5600000163 IC DRV602PWR 870mW TSSOP-14 U602 056G 616 57 9JR5600000164 Test Only Audio AD82581B-LEG LQFP-48 12W X401 093G 22923 C 9JR9300000163 CRYSTAL 54M 10P HC-49S ZD101...

  • Page 109: Cabinet Parts

    LC-32A28L, LC-42A48L [2] CABINET PARTS(LC-32A28L) 2008-03-14...
  • Page 110 LC-32A28L, LC-42A48L PARTS CODE Sharp Code DESCRIPTION CABINET PARTS(LC-32A28L) 705TZ93448A 9JR7050000136 BEZEL ASSY 078G0055 7 M 9JR7800000013 SPEAKER 16 OHM 5.5W 580/370mm 135X41mm 750TVM315B5211N0SP 9JR7500000026 PANEL V315B5-L02 TW CMO CBPFA4DSA1 9JR9900000054 MAIN PCB ASSY ADTVA2415SA1 9JR9900000055 POWER PCB ASSY KEPF9AB7...
  • Page 111 LC-32A28L, LC-42A48L CABINET PARTS(LC-42A48L) 2008-03-14...
  • Page 112 LC-32A28L, LC-42A48L PARTS CODE Sharp Code DESCRIPTION CABINET PARTS(LC-42A48L) 705TZA34068 9JR7050000169 BEZEL ASSY 078G0120 17 M 9JR7800000016 SPEAKER 16 OHM 12W 770/360mm 126X37mm 750TVM420H1511N000 9JR7500000031 PANEL V420H1-L15 TW CMO CBPFA4DSZ1 9JR9900000066 Scaler Board Assembly ADTVA2415SA2 9JR9900000061 power board Assembly KEPF9AB7...

  • Page 113: Supplied Accessoories

    LC-32A28L, LC-42A48L [3] SUPPLIED ACCESSOORIES 2008-03-14...

  • Page 114: Packing Parts

    LC-32A28L, LC-42A48L [4] 32” PACKING PARTS...
  • Page 115 LC-32A28L, LC-42A48L PARTS CODE Sharp Code DESCRIPTION [2] PACKING PARTS (LC-32A28L) SET BODY 705GZ934144 9JR7050000069 STAND ASSY Z44GJ016201 9JR4400000056 CUSHION_TR Z44GJ016101 9JR4400000055 CUSHION_TL Z44GJ016301 9JR4400000057 CUSHION_BL Z44GJ016401 9JR4400000058 CUSHION_BR 089G214A21NLSS 9JR8900000014 SHARP-ASSIGN AC POWER CORD 2100mm 705TZA4101A 9JR7050000139 DFU ASSY(latam)
  • Page 116 LC-32A28L, LC-42A48L 42” PACKING PARTS...
  • Page 117 9JR7050000112 STAND ASSY P44GN019201 9JR4400000045 CUSHION_TR P44GN019101 9JR4400000044 CUSHION_TL P44GN019301 9JR4400000046 CUSHION_BL P44GN019401 9JR4400000047 CUSHION_BR 089G214A21NLSS 9JR8900000014 SHARP-ASSIGN AC POWER CORD 2100mm 705TZA4135A 9JR7050000175 DFU ASSY Z44GN014001 9JR4400000068 CARTON 098TR7BD1NESHD 9JR9800000001 REMOTE CONTROL GA695WJSA P45T 46023 9JR4500000008 PE BAG(1200X1000x0.72mm) 2008-03-14...
  • Page 118 LC-32A28L, LC-42A48L COPYRIGHT ○ 2010 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.

This manual is also suitable for:

Lc-42a28lLc-42a48l

Table of Contents