Related Manuals for Polaroid V23D series
Summary of Contents for Polaroid V23D series
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Page 1: Service Manual
V23D/V27D/V30D series LCD-TV (NTSC) Service Manual Date: April 15, 2005 Ver. : 1.1... -
Page 2: Table Of Contents
Table of contents 1. Precautions & Notice........………………….3 2. Features & Specifications..........………….5 3. Connection & Applications............10 4. Controls Location ................12 5. Remote Control................13 6. Disassembly Instructions.............15 7. Block Diagram................20 8. Troubleshooting ..............……..21 9. Electronic Circuit Description..........…27 10. Circuit Diagram............…………….31 11. PCB Layout............…………………56 12. -
Page 3: Precautions & Notice
1. Precautions & Notice 1.1 Safety Precautions 1) Cleaning: Unplug the power cord from the AC outlet before cleaning the product. Use a damp cloth to clean the product. Do not use liquid cleaners or aerosol cleaners. 2) Heat sources: Keep the product away from heat sources such as radiators, heaters, stoves and other heat-generating products (including amplifiers). -
Page 4: Product Safety Notice
circuits as contact with them might be fatal. 6) Ventilation-The vents and other openings in the cabinet are designed for ventilation. Do not cover or block these vents and openings since insufficient ventilation can cause overheating and/or shorten the life of the product. Do not place the product on a bed, sofa, rug or other similar surface, since they can block ventilation opening. -
Page 5: Specifications
Specifications Specification V23DXXX ITEMS SPECIFICATION Screen size 23” wide TFT-LCD panel Aspect Ratio 15：9 1280 x 768 (WXGA) Resolution Display Contrast ratio 400:1(typ) Brightness 450cd/m (typ) Viewing Angle Over 170∘(Hor.) / 170∘(Vert.) Chinese , English, French , German , Spanish OSD Language TV standard (CCIR) NTSC... -
Page 6: Features & Specifications
V27DXXX ITEMS SPECIFICATION 27＂wide TFT-LCD panel Screen size Aspect Ratio 16：9 1280 x 720(WXGA) Resolution Display Contrast ratio 600:1 (typ) Brightness 550cd/m (Typ) Over 170∘(Hor.) / 170∘(Vert.) Viewing Angle Chinese, English, French, German, Spanish OSD Language TV standard (CCIR) NTSC TV Turning system PLL 181 Ch. - Page 7 V30DXXX ITEMS SPECIFICATION 29.6＂wide TFT-LCD panel Screen size Aspect Ratio 15：9 1280 x 768 (WXGA) Resolution Display Contrast ratio 600:1(typ) Brightness 550cd/m (Typ) Over 170∘(Hor.) / 170∘(Vert.) Viewing Angle OSD Language Chinese , English, French , German , Spanish TV standard (CCIR) NTSC TV Turning system PLL 181 Ch.
- Page 8 PC I/P Pixel Mode Mode Name H.Freq.(KHZ) H. Polarity Resolution V.Freq.(HZ) V. Polarity (MHZ) ＋ VGA 70HZ 31.469 25.175 － 640*350 70.087 － VGA 60HZ 31.469 25.175 － 640*480 59.941 － VGA 72HZ 37.861 31.5 － 640*480 72.81 － VGA 75HZ 37.5 31.5 －...
- Page 9 PC I/P Pixel Mode Mode Name H.Freq.(KHZ) H. Polarity Resolution V.Freq.(HZ) V. Polarity (MHZ) ＋ VGA 70HZ 31.469 25.175 － 640*350 70.087 － VGA 60HZ 31.469 25.175 － 640*480 59.941 － VGA 72HZ 37.861 31.5 － 640*480 72.81 － VGA 75HZ 37.5 31.5 －...
- Page 10 DVI I/P Pixel Mode Mode Name H.Freq.(KHZ) H. Polarity Resolution V.Freq.(HZ) V. Polarity (MHZ) － VGA 60HZ 31.469 25.175 － 640*480 59.941 ＋ SVGA 60HZ 37.879 40.0 ＋ 800*600 60.317 － XGA 60HZ 48.363 65.0 － 1024*768 60.004 ＋ US TEXT 31.47 28.320 ＋...
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Page 11: Connection & Applications
3. Connection & Applications (TV only) - Page 12 Video Input device ˙DVD player ˙Satellite receiver ˙Set top box ˙VIDEO Inputdevice ˙Digital Camera ˙Satellite receive Note: ˙Set top box Audio out: The level of Audio O/P is constant. It won’t be affected by aligning volume, treble and bass. This connecter should be connected to outer audio amplifier to enlarge the volume. Video O/P: When user wants to connect Audio and Video O/P of our LCD-TV to VCR for recording program, the O/P has only one choice that is TV mode.
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Page 13: Controls Location
4. Control Location These buttons control your TV’s basic features, include the on-screen mean. To use the more advanced features, you must the remote control. POWER: turn on or turn off the LCD TV. SOURCE: set up the input source (PC,VIDEO,SV,TV,CV). MENU: display the main menu. -
Page 14: Remote Control
5. Remote Control The remote control pad works almost as same as ordinary TV remote control that includes the basic function needed while viewing a live video: Sleep Power Number Buttons Return Channel UP Mute SWAP MENU/Enter VOL－ VOL+ TITLE / EXIT Reset Channel DOWN Subwoofer... -
Page 15: Summary Of Control Button
Summary of Control Button Press POWER button Direct to turn on or turn off the display Selecting the signal source Press TV button Direct to switch to the TV mode. Press AV button Direct to switch to the AV Video mode. Press SV button Direct to S-Video mode. -
Page 16: Disassembly Instructions
6. Disassembly Instructions A. Face down the LCD-TV : Face down the LCD-TV on a smooth plane with a soft material to protect the panel faceplate. B.Base Neck Removal Procedure : 1. Remove 2 screws from Neck Cover. (Indicated as “ A “) Then you could take the Back Cover of neck apart from the LCD-TV C. - Page 17 D. Tuner Cover & AV Cover Removal Procedure: 1. Remove Tuner Cover. (Indicated as “D”) 2. Remove AV Cover before, you should be loose the screw (Indicated as “E”) E. Back Cover Removal Procedure: 1. Remove 8 screws from the Back Cover. ( Indicated as “ F “and “ G “ ) 2.
- Page 18 F. Right/Left Side Covers and Tuner Board Removal Procedure: 6.1 Remove 4 screws from Slide of AV PCB & left side Covers. (Indicated as “ H ”) 6.2 Remove a screw from the Tuner Board. (Indicated as “ I ”) 6.3 Remove 3 screws from the power case assembly.
- Page 19 H. Main PCB Removal procedure: 1. Remove 9 screws from the Main PCB. (indicated “ L “) Then you could take Main PCB apart from the LCD-TV . I. Panel Bracket Removal procedure: 1. Remove 4 screws from the Panel Bracket. (Indicated as “ M ”) Then you could take Panel Bracket apart from the Front Cover.
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Page 21: Block Diagram
Block Diagram UT01 10W + 10W I044 I010 TV – Tuner Audio Amp. Speaker (Philips) MTS & Audio Processor Audio TFA9843) Video FQ1236 MK3 MSP3440G Headphone CV Audio SV/AV Audio Subwoofer PC Audio I019 I018 Interlaced Video Decoder SAA7117 8 bit Port V(Sub) I009 Progressive... -
Page 22: Troubleshooting
Troubleshooting 8.1 Symptom Codes CODE SYMPTOM COUNTERMEASURES Make sure the Power cord and Antenna cable are No Picture and No Sound properly connected . in TV mode. Make sure the batteries in remote control are not flat. Switch to TV source by pressing TV button. Select the correct signal source: “ANT”... - Page 23 CODE SYMPTOM COUNTERMEASURES Stripe noise. Check the coaxial cable connected with the TV is not oxidized Do not use 300 ohm twin lead cables as interference may occur It is recommended to use a 75 ohm coaxial cable (not supplied) to get premium quality picture. Keep the aerial cable away from other connecting cables.
- Page 24 CODE SYMPTOM COUNTERMEASURES Remote Control does not Make sure the batteries in remote control are not flat work Check the polarity of the batteries Use the remote control in the front of the TV or from less than seven meters away. make sure the Remote Sensor Window is not under strong lighting.
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Page 25: Troubleshooting Flow Chart
8.2 Troubleshooting Flow Chart （1）Power Start NG No picture Appear Replace I029 0~0.5V Restart and check sources are 否 plug Does the LED Is the Voltage at Measure of connected Picture light up？ I029#8= 5V？ I029#4 =? volt No picture appears 3~5V Panel wire (P005) is... - Page 26 (2) Picture abnormal The Ver. Or Hor. Sync. does not hold in any source 否 Are the panel Check side SMD of Re-plug the Erase cables (P005) I019&I020 is welded panel cable, and EEPROM, and attached correctly? check the correctly? then check the picture picture is...
- Page 27 Steps to clean EEPROM 1. Press POWER key to turn off the LCD-TV. ▽ 2. Press CH , then press Power key of remote control to turn on the LCD-TV, after 3 seconds, then release CH▽ key. 3. When「INITIAL EEPROM」appears on the screen, on the INTTAL EEPROM is complete.
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Page 28: Electronic Circuit Description
9. Electronic Circuit Description 9.1 Main Board Circuit (1) DVI-I signal Refer to circuit diagram of PWB-0812 The analog RGB video input signals are supplied through the DVI-I cable which is terminated at P022. These three input signals are approximately 0.7Vpp in amplitude. R374、R301 and R327 give resistance of 75Ω... - Page 29 (2) AV Signal Refer to the page 8 in circuit diagram of PWB-0812. V30DXXX / V27DXXX can process 4 different Video signals，including Composite Video (CVBS)、Separate Video (S-Video ) and Component Video (YUV). Component Video also includes two types Y Cb/Cr and Y Pb/Pr, and I018,I031 SAA7117 is 16 channels analog input.
- Page 30 B. CV (Y Pb Pr )： Entering from P50 signal, then enters Pin#43、48、54 of AD9883 passed by the matching impedance resister and capacitance. It converts to RGB signal of YUV by I006 and passes to Port B of I019 by six row-resister RP08 ~ RP12. Then output to panel.
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Page 31: Inverter Circuit
Pin#A1BLU0 ~ 7、A1GRN0 ~ 7、A1RED0 ~ 7 and B1BLU0 ~ 7、B1GRN0 ~ 7、 B1RED0 ~7 are data output from I019 to P005 and P802( to LCD Panel ). They are buffered by LP02,LP04,LP06,LP08,LP10,LP12 and filtered associated capacitors. These outputs are organized into even and odd connectors, each with 18 bits. 9.2 Keyboard Circuit &... -
Page 32: Circuit Diagram
10. Circuit Diagram PCB Main Board Circuit... - Page 51 11. PCB Layout...
- Page 61 POWER Layout...
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Page 66: Electrical Part List
12. Electrical Part List Model NOTE V23DXXX V27DXXX V30DXXX part number CMO V270W1 CMO V296W1 TFT Panel LC230W01- 1.5051253656 1.5051253668 5051253665 (include (include (include Inverter) Inverter) Inverter) panel is panel is panel is Inverter included included included PARTS 1.HOAU242001 6693006615(RA) 6693006610(RA) Power 6693006611(RB) - Page 67 U12-5055123800 U05-5055126200 U05-5055125600 Speaker U12-5055126200 U21-5055123700 U05-5052731052 U05-5052731052 Remote U12-5052731043 U21-5000100072 U21-5000100072 control Note: 6647021817 6647021817 6647021817 Different model have different firmware version. DVI-I cable DVI-I cable Signal U05-5057424010 U05-5057424010 U21-5057424010 U21-5057424010 Cable U12-5056705900 U05-E056705900 U05-E056705900 Power U12-5056705900 U21-5056705900 U21-5056705900 Cord U12-5030007049 U05-5030057109 U05-5030057109...
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Page 68: Mechanical Disassembly
Mechanical Disassembly...