COLOR TFT-LCD TV SERVICE MANUAL MODEL : PDI-P23LCD CAUTION !! BEFORE SERVICING THE TFT-LCD TV, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
CONTENTS Contents ------------------------------------------------------------------------- 2 Safety precautions ----------------------------------------------------------- 3 Servicing precautions ------------------------------------------------------- 4 Specifications ------------------------------------------------------------------ 5 Location of control ----------------------------------------------------------- 8 External input / output -------------------------------------------------------11 Inspectio
SAFETY PRECAUTIONS !! Important Safety Notice !! Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by in the Schematic Diagram and Replacement Parts List. It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer.
SERVICING PRECAUTIONS CAUTION!! Before servicing receivers covered by this service manual, read and follow the SAFETY PRECAUTIONS on page 2 of this publication. General Servicing Precautions 1.Always unplug the receiver AC power cord from AC power source before; ⓐRemoving or reinstalling any component, circuit board module or any other receiver assembly. ⓑDisconnecting or reconnecting any receiver electrical plug or other electrical connection.
SPECIFICATIONS Note: Specifications and others are subject to change without notice for improvement. 1.Scope. This document is the specification of 23” Hospital grade TFT-LCD Color TV. 2.Power 1) Power requirement Input Frequency : 50/60㎐ Input Voltage: AC 100V ∼ AC 240V Power consumption : Less than 140Watt.( Average: 95~100 Watt) 2) Power cord Use UL listed hospital grade power cord 3.Tuning system FS, 181 Channel 4.Sound output 10W+10Wrms Stereo (Max) 5.Antenna input impedance VHF / UHF at 75ohm 6.
SPECIFICATIONS 9.Receiving RF TV system NO 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 Model System PAL-B PAL-G PAL-I, I /I PAL-D PAL-K SECAM-B SECAM-G SECAM-D SECAM-K SECAM-K1 SECAM-I (6.0) NTSC-3.58 / 4.5 NTSC-3.58 / 5.5 NTSC-3.58 / 6.0 NTSC-3.58 / 6.5 NTSC-3.58 / 4.5(5.0) NTSC-4.43 / 5.5 NTSC-4.43 / 6.0 NTSC-4.43 / 6.5 PAL 5.5 / 60Hz PAL 6.0 / 60Hz PAL 6.5 / 60Hz SECAM 5.5 / 60Hz SECAM 6.0 / 60Hz SECAM 6.
SPECIFICATIONS 10. PC Mode Scan Frequency & Timing 1)Scan Freq : H: 31 ∼ 61 kHz / V : 56 ∼ 75㎐ 2)Preset Timing Chart Mode VGA SVGA XGA WXGA DTV Resolution 640 x 480 640 x 480 640 x 480 800 x 600 800 x 600 800 x 600 800 x 600 1024 x 768 1024 x 768 1024 x 768 1280 x 768 1280 x 768 1360 x 768 720 x 480p 1280 x 720p 1920 x 1080i Horizontal Frequency(KHz) 31.5 KHz 37.9 KHz 37.5 KHz 35.1 KHz 37.9 KHz 48.1 KHz 46.9 KHz 48.4 KHz 56.5 KHz 60.0 KHz 47.4 KHz 47.8 KHz 47.7 KHz 31.5 KHz 45.0 KHz 33.
LOCATION OF CONTROL All the function can be controlled with the remote controller. Some functions can also adjusted with the buttons on the controls on the TV front panel. 12. Remote controller Note !! : Before you use the remote controller, please install the batteries. 1.POWER: Turns the TV on from standby or off to standby mode. 2.MUTE: Turns the sound on and off 3.NUMBER buttons: Select channel numbers. 4.PSM (Picture Status Memory): Recalls your preferred picture setting. 5.
LOCATION OF CONTROL 17.ARC You can watch TV in various picture formats; 16:9, 14:9, 4:3, 16:9 Zoom, 14:9 Zoom, 4:3 Zoom. Repeatedly press the ARC button to select your desired picture format. Note: In PC mode only 16:9 and 4:3 sized displays available. 18. INPUT: Selecs the AV source for sub picture in PIP mode. 19.PIP: Displays a PIP(Picture In Picture) screen. The PIP function is available except 480i signal in COMPONENT1 and COMPONENT2 mode. 20.
LOCATION OF CONTROL 13. Controller of Panel 1. ON/OFF: Switches TV set on or off. 2. MENU : Displays menu. 3~4. CH▲ / ▼: (Channel Up/Down) Selects a channel or a menu item. 5~6. VOL▲ / ▼ (Volume Up/Down) Adjusts the volume or menu settings. 7. TV/AV Selects TV, VIDEO, S-VIDEO, RADIO(Only when the Radio is set on), PC Analog, PC Digital, COMPONENT1 or COMPONENT2 Clears the menu from the screen. mode. 8. Remote control sensor Accepts the IR signal of remote controller. 9.
EXTERNAL IN/OUT 14.External IN / OUT 1. PC DIGITAL IN (DVI-D) : Connect the DVI from PC. 2. PC ANALOG IN (D-SUB) Connect the 15pin D-SUB from PC. 3. AV OUT: Connect these outputs to the Audio/Video inputs of extemal equipment. 4. AV IN: Connect the Audio/Video outputs of extemal equipment to these inputs. 5. COMPONENT2 IN: Connect the Y, Pb, Pr signal from DVD or Set Top Box. 6. COMPONENT1 IN: Connect the Y, Pb, Pr signal from DVD or Set Top Box. 7.
INSPECTION INSTRUCTION 1. Supplied Accessories Note: Make Sure the following accessories are provided with Product. 1. AC Code 2. Owner’s manual .. 3.Mounting Brackets &Hardware (Not included with the “-NB” model) PDI-P23LCD SERVICE MANUAL 4.
DEASSEMBLY PROCEDURE 16.
DEASSEMBLY PROCEDURE 3)Metal plate & Rear chassis Remove 8 screws 4)Remove bracket Remove 4 screws 오류! PDI-P23LCD SERVICE MANUAL PAGE:14
DEASSEMBLY PROCEDURE 5) Disconnect 8 plugs on Main PCB Remove 8 connector 6) Remove 12 Main & SMPS PCB screws Remove 11 screws PDI-P23LCD SERVICE MANUAL PAGE:15
DEASSEMBLY PROCEDURE 7-1)Removal of LCD module Remove 8 screws 7-2)Removal of LCD module Remove 10 screws PDI-P23LCD SERVICE MANUAL PAGE:16
DEASSEMBLY PROCEDURE 7-3)Removal of LCD module After remove front shield PDI-P23LCD SERVICE MANUAL PAGE:17
DEASSEMBLY PROCEDURE 7-4) Removal of LCD module Remove 2 screws PDI-P23LCD SERVICE MANUAL PAGE:18
DEASSEMBLY PROCEDURE 7-5) Removal of LCD module Remove 2 screws PDI-P23LCD SERVICE MANUAL PAGE:19
DEASSEMBLY PROCEDURE 7-6)Removal of LCD Module Front cover remains after removing LCD Module PDI-P23LCD SERVICE MANUAL PAGE:20
WIRE DRESSING 1.
WIRE DRESSING 1) Wire Dressing for speaker & Key control. ( No.1, acetate Tape) 2) Wire Dressing for Left speaker & Key control. ( No.2 acetate Tape) 3) Wire Dressing for Right speaker & Key control. ( No.
PART APPEARANCE 1.
PART APPEARANCE 1-1.
TROUBLE SHOOTING 15.Troble shooting 15-1.No Raster P803 (pin8~15) : 24V (B/Light Vcc) P803 (pin1) : 5V (B/L ON:5V / Off:0V) Y Check P303 (pin26~30) : 12V N Y Replace LCD Panel.
TROUBLE SHOOTING 15-2. No Sound & Picture OK IC601(pin10) = VCC24V Y N N Check Another VCC Line Y IC601(pin8) = High=mute = Low = on Check SW751 Y Check Volume N IC101 (pin123,124 L/R) Q104/105(Emmit or)Sound Wave N Volume UP Swich Off N Replace IC101 15-3. No Operation LED blinking No LED Y Resistance:0 ohm IC804 (pin4) <-> GND Y Replace IC804 / D850 Y Check All SCL/SDA SignalLevel = 3.3V N Replace IC101 PDI-P23LCD SERVICE MANUAL Y IC01(pin69~75) ScalerCommuni cation Lines) = 3.
Schematic Diagram PDI-P23LCD SERVICE MANUAL PAGE:27
BLOCK DIAGRAM 1.
PCB LAYOUT 1. CONTROL PCB & PILLOW JACK PCB 1-1.Pillow PCB 1-2.
PCB LAYOUT 2.
PCB LAYOUT 3.
PCB LAYOUT 4.
PCB LAYOUT 4.
WAVE FORM NOTE!!:ⓐVideo = Gray scale pattern input / Audio = 1Khz input at volume step 20~40. 1)Component Y input, (L207 & R560 MEASURE) (1V-p-p, Input = Vertical color pattern) 2)Component Cb input, (L208 & R262 MEASURE) (0.7V-p-p, Input = Vertical color pattern) 3) Component Cr input, (L209 & R265 MEASURE) (0.7V-p-p, Input = Vertical color pattern) 4) S-video C signal input. (C236 MEASURE) 5) S-video Y signal input.(15.7Khz,1Vp-p) (R519 MEASURE) 6) CVBS Video signal input.(15.
WAVE FORM NOTE!!: Video = Gray scale pattern input / Audio = 1Khz input at volume step 40. 7) CVBS Video signal output.(15.7Khz,1Vp-p) (R279 MEASURE) 8) Q105 Emitter (Audio “L” output) 9) Q104 Emitter (Audio “R” output) 10)R132 IR signal input to u-computer.
WAVE FORM NOTE!!: PC INPUT = 640x480 @ 60Hz Cross hatch pattern.
ADJUSTMENT INSTRUCTION WITH DEFAULT FACTORY DATA 1.SVC mode data Adjustment NOTE!! When the EEPROM has been replaced, the SVC data should be restored as the function of individual system and specification. When the EEPROM has been replaced White Blance Checking. [ Enter and exit SVC mode ] Note: into the SVC mode, Initialize with default data. 1) Press 5 Seconds MENU buttons on both TV set and Remote Controller at the same time to get into SVC mode. 2) Press the PR ▲▼ button several times to find SVC Data.
ADJUSTMENT INSTRUCTION WITH DEFAULT FACTORY DATA 2. White Blance Checking 1.RF when it presses a SVC height from the screen , with the SVC Mode Main screen movement - Panel23 : SSLTA230W1L02 - Language Options : NORTH AME 3EA - Model : M 4. TV White Balance Setting : All Start PDI-P23LCD SERVICE MANUAL 2. Option1 System : M USA Text : EAST EU1 5. TV White Balance Setting PAGE:38 3. It presses the Menu of the remote control , with the SVC Mode Main screen movement 6.
PACKING INSTRUCTION NO 1 2 3 P ART NO 321-008A 310-025E , F DE S CRI P T I O N 23" LCD CO LO R T V B A G P A CK I NG P A CK I NG L, R M AT E RKAL PE EPS CO L O R W HI T E Q 'T Y 1 1 1 4 5 300-011W - B O X CA RT O N A CCE S S O RY PAPER - - 1 1 6 499-002A T APE O PP 70m m - 3000m m 3 2 4 1 5 6 M AT ER IAL T H IS T R EAT M EN T M O D EL LT 23Q 5LF PDI-P23LCD SERVICE MANUAL PAGE:39 D AT A 2005. 09. 13 EN G R D . H .
MECHANICAL EXPLODED VIEW 1.
REPLACEMENT PART LIST 1.
REPLACEMENT PART LIST 2.
REPLACEMENT PART LIST 3. Parts List (Main PCB) LEVEL PART NO GRLT41DA001A 1 PART NAME GR, COMMON AUTO DESCRIPTIONS LOCATION NO 2 0CESS100HMTR CAPACITOR, ELEC. 10UF 50V 2 0CESS101CMTR CAPACITOR, ELEC. Capacitor, 100UF 16V 2 2 2 2 0CESS101EMTR 0CESS010HMTR 0CESS220CMTR 0CESS221AMTR CAPACITOR, ELEC. 1UF 50V CESSL1C220M0511AD CAPACITOR, ELEC. 100UF 25V CAPACITOR, ELEC. Capacitor, 22UF 16V 220UF 10V 2 0CESS2R2HMTR CAPACITOR, ELEC. Capacitor, 2.2UF 50V 2 0CESS3R3HMTR CAPACITOR, ELEC.
REPLACEMENT PART LIST 4. Parts List (Main PCB) LEVEL PART NO PART NAME DESCRIPTIONS 2 2 2 0CHSS224DZTS 0CHSS330DJTS 0CHSS331DJTS CAPACITOR, CHIP CL10C330JBNC CL10C331JBNC Capacitor, chip 0.22UF Capacitor, Chip, 33PF Capacitor, chip 330PF 2 0CHSS334DZTS CAPACITOR, CHIP Capacitor, chip,0.33UF,1608 2 0CHSS471DJTS CL10C471JBNC Capacitor, chip 470PF 2 0CHSS473DKTS CL10B473KANC Capacitor, chip 0.
REPLACEMENT PART LIST 5. Parts List (Main PCB) LEVEL PART NO PART NAME DESCRIPTIONS 2 0RHSS104DJTS RC1608J104CS Resistor, chip 100K 2 2 2 0RHSS105DJTS 0RHSS122DJTS 0RHSS123DJTS RESISTOR, CHIP RC1608J122CS RESISTOR, CHIP 1M OHM, 1608 J Resistor, chip 1.2K 12K OHM, 1608 J 2 0RHSS151DJTS RC1608J151CS Resistor, chip 150 ohm 2 2 0RHSS153DJTS 0RHSS182DJTS RESISTOR, CHIP RESISTOR, CHIP 15K OHM, 1608 J Resistor, chip 1.
REPLACEMENT PART LIST 6.
CIRCUIT DESCRIPTIONS General Description for 23.01” color TFT LCD TV. The TFT LCD TV described in the followings is based on a Multi TV system, digital Control display, 23.01" diagonal. The TFT LCD TV is intended to be a finished product, Basically a display device mounted inside an enclosure which will provide the safety Requirements. With the exception of LCD Panel, the display device shall be composed entirely of solid state components.
CIRCUIT DESCRIPTIONS 1.SCALER SECTION.
CIRCUIT DESCRIPTIONS 2) Block Diagram.
CIRCUIT DESCRIPTIONS 3) Pin configuration.
CIRCUIT DESCRIPTIONS 3-1) Pin configuration < The left side > PDI-P23LCD SERVICE MANUAL PAGE:51
CIRCUIT DESCRIPTIONS 3-2) Pin configuration < The right side > PDI-P23LCD SERVICE MANUAL PAGE:52
CIRCUIT DESCRIPTIONS 4) Pin Functions.
CIRCUIT DESCRIPTIONS [DVI Interface] [Video Interface] [LVDS Interface] PDI-P23LCD SERVICE MANUAL PAGE:54
CIRCUIT DESCRIPTIONS [GPO Interface] [DRAM Interface] PDI-P23LCD SERVICE MANUAL PAGE:55
CIRCUIT DESCRIPTIONS [Misc.
CIRCUIT DESCRIPTIONS 2. VCT 49xxi SECTION. Device : VCT 49xxi Features : PSSDIP88-1/-2 package PMQFP144-2 package Submicron CMOS technology Low-power standby mode Single 20.
CIRCUIT DESCRIPTIONS 2) Block Diagram.
CIRCUIT DESCRIPTIONS 3) Pin configuration.
CIRCUIT DESCRIPTIONS 3-1) Pin configuration < The left side > PDI-P23LCD SERVICE MANUAL PAGE:60
CIRCUIT DESCRIPTIONS 3-2) Pin configuration < The right side > PDI-P23LCD SERVICE MANUAL PAGE:61
CIRCUIT DESCRIPTIONS 4) Pin Connections and Short Descriptions NC = not connected LV = if not used, leave vacant OBL = obligatory; connect as described in circuit diagram IN = Input Pin OUT = Output Pin SUPPLY = Supply Pin 4-1) Pin(Port) Functions PDI-P23LCD SERVICE MANUAL PAGE:62
CIRCUIT DESCRIPTIONS 4-2) Pin(Port) Functions PDI-P23LCD SERVICE MANUAL PAGE:63
CIRCUIT DESCRIPTIONS 4-3) Pin(Port) Functions PDI-P23LCD SERVICE MANUAL PAGE:64
CIRCUIT DESCRIPTIONS 4-4) Pin(Port) Functions PDI-P23LCD SERVICE MANUAL PAGE:65
CIRCUIT DESCRIPTIONS 4-5) Pin(Port) Functions PDI-P23LCD SERVICE MANUAL PAGE:66
CIRCUIT DESCRIPTIONS 3. Video A/D Converter Device: Features: MST9883CR.
CIRCUIT DESCRIPTIONS 2) Block Diagram.
CIRCUIT DESCRIPTIONS 3) Pin configuration.
CIRCUIT DESCRIPTIONS 4-1) Analog Interface 4-2) Misc.
CIRCUIT DESCRIPTIONS 4-3) Output Interface 4-4) Power Pins PDI-P23LCD SERVICE MANUAL PAGE:71
