DT1900-P-A SERVICE MANUAL COLOR TELEVISION RECEIVER ORIGINAL MFR'S VERSION A Design and specifications are subject to change without notice. SERVICING NOTICES ON CHECKING 1. KEEP THE NOTICES As for the places which need special attentions, they are indicated with the labels or seals on the cabinet, chassis and parts. Make sure to keep the indications and notices in the operation manual. 6. AVOID AN X-RAY Safety is secured against an X-ray by considering about the cathode-ray tube and the high voltage peripheral circuit, etc. Therefore, when repairing the high voltage peripheral circuit, use the designated parts and make sure not modify the circuit. Repairing except indicates causes rising of high voltage, and it emits an X-ray from the cathoderay tube. 2. AVOID AN ELECTRIC SHOCK There is a high voltage part inside. Avoid an electric shock while the electric current is flowing. 3. USE THE DESIGNATED PARTS The parts in this equipment have the specific characters of incombustibility and withstand voltage for safety. Therefore, the part which is replaced should be used the part which has the same character. Especially as to the important parts for safety which is indicated in the circuit diagram or the table of parts as a mark, the designated parts must be used. 7. PERFORM A SAFETY CHECK AFTER SERVICING Confirm that the screws, parts and wiring which were removed in order to service are put in the original positions, or whether there are the portions which are deteriorated around the serviced places serviced or not. Check the insulation between the antenna terminal or external metal and the AC cord plug blades. And be sure the safety of that. (INSULATION CHECK PROCEDURE) 4. PUT PARTS AND WIRES IN THE ORIGINAL POSITION AFTER ASSEMBLING OR WIRING There are parts which use the insulation material such as a tube or tape for safety, or which are assembled in the condition that these do not contact with the printed board. The inside wiring is designed not to get closer to the pyrogenic parts and high voltage parts. Therefore, put these parts in the original positions. 5. TAKE CARE TO DEAL WITH THE CATHODE-RAY TUBE In the condition that an explosion-proof cathoderay tube is set in this equipment, safety is secured against implosion. However, when removing it or serving from backward, it is dangerous to give a shock. Take enough care to deal with it. 1. Unplug the plug from the AC outlet. 2. Remove the antenna terminal on TV and turn on the TV. 3. Insulation resistance between the cord plug terminals and the eternal exposure metal [Note 2] should be more than 1M ohm by using the 500V insulation resistance meter [Note 1]. 4. If the insulation resistance is less than 1M ohm, the inspection repair should be required. [Note 1] If you have not the 500V insulation resistance meter, use a Tester. [Note 2] External exposure metal: Antenna terminal Earphone jack HOW TO ORDER PARTS Please include the following informations when you order parts. (Particularly the VERSION LETTER.) 1. MODEL NUMBER and VERSION LETTER The MODEL NUMBER can be found on the back of each product and the VERSION LETTER can be found at the end of the SERIAL NUMBER. 2. PART NO. and DESCRIPTION You can find it in your SERVICE MANUAL. IMPORTANT Inferior silicon grease can damage IC's and transistors. When replacing an IC's or transistors, use only specified silicon grease (YG6260M). Remove all old silicon before applying new silicon. A1-1 ABOUT LEAD FREE SOLDER (PbF) Distinction of PbF PCB: PCBs (manufactured) using lead free solder will have a PbF printing on the PCB. (Please refer to figures.) Caution: · Pb free solder has a higher melting point than standard solder; Typically the melting point is 86°F~104°F(30°C~40°C) higher. Please use a soldering iron with temperature control and adjust it to 650°F ± 20°F (350°C ± 10°C). In case of using high temperature soldering iron, please be careful not to heat too long. · · Pb free solder will tend to splash when heated too high (about 1100°F/ 600°C). All products with the printed circuit board with PbF printing must be serviced with lead free solder. When soldering or unsoldering, completely remove all of the solder from the pins or solder area, and be sure to heat the soldering points with the lead free solder until it melts sufficiently. Recommendations Recommended lead free solder composition is Sn-3.0Ag-0.5Cu. A1-2 CONTENTS SERVICING NOTICES ON CHECKING ........................................................................................................... A1-1 HOW TO ORDER PARTS ................................................................................................................................. A1-1 IMPORTANT ..................................................................................................................................................... A1-1 ABOUT LEAD FREE SOLDER (PbF) ............................................................................................................ A1-2 CONTENTS ...................................................................................................................................................... A2-1 GENERAL SPECIFICATIONS .......................................................................................................................... A3-1~A3-4 DISASSEMBLY INSTRUCTIONS 1. REMOVAL OF ANODE CAP ................................................................................................................... B1-1 2. REMOVAL AND INSTALLATION OF FLAT PACKAGE IC ...................................................................... B2-1, B2-2 SERVICE MODE LIST ....................................................................................................................................... C-1 CONFIRMATION OF HOURS USED ................................................................................................................ C-1 WHEN REPLACING EEPROM (MEMORY) IC ................................................................................................. C-1 ELECTRICAL ADJUSTMENTS ......................................................................................................................... D-1~D-5 BLOCK DIAGRAM ............................................................................................................................................. E-1, E-2 PRINTED CIRCUIT BOARDS MAIN/CRT/OPERATION/FRONT JACK ........................................................................................................ F-1~F-4 SCHEMATIC DIAGRAMS MICON/TUNER .............................................................................................................................................. G-1, G-2 CHROMA ....................................................................................................................................................... G-3, G-4 TV POWER .................................................................................................................................................... G-5, G-6 DEFLECTION/CRT ........................................................................................................................................ G-7, G-8 SOUND/AV .................................................................................................................................................... G-9, G-10 WAVEFORMS .................................................................................................................................................... H-1, H-2 MECHANICAL EXPLODED VIEW ..................................................................................................................... I-1 MECHANICAL REPLACEMENT PARTS LIST .................................................................................................. J1-1 ELECTRICAL REPLACEMENT PARTS LIST ................................................................................................... J2-1, J2-2 A2-1 GENERAL SPECIFICATIONS G-1 TV System CRT CRT Size / Visual Size CRT Type Magnetic Field BV/BH 19 inch / 480mmV Normal +0.45G/0.18G NTSC 2Speaker Ext 3 Inch 8 ohm 0.5+0.5 W -W No US System M 1Tuner USA(W/ CATV) 2 - 69, 4A, A-5 - A-1, A - I, J - W, W+1 - W+84 45.75MHz 41.25MHz 4.50MHz No Yes Yes 120V AC 60Hz at AC 73 W at AC 120 V 60 Hz 3 W at AC 120 V 60 Hz -kWh/Year Yes Yes No UL / CSA FCC / IC DHHS / HWC +5oC ~ +40oC -20oC ~ +60oC Less than 80% RH Yes Disney Charecter Yes Yes Yes Yes Yes Yes Yes No No No No No No Yes Yes Yes Yes Yes Yes No No No Yes Yes Yes Yes Yes Yes Yes Yes No No No No No Color System Speaker Position Size Impedance MAX 10%(Typical) Sound Output G-2 Tuning System NTSC3.58+4.43 /PAL60Hz Broadcasting System Tuner and System Receive CH Destination CH Coverage Picture(FP) Sound(FS) FP-FS Intermediate Frequency G-3 Power Preset CH StereoTV Sound (Ext Audio Input Only) Tuner Sound Muting Power Source AC DC Power Consumption Stand by (at AC) Per Year Power Fuse Safety Circuit IC Protector(Micro Fuse) Safety Radiation X-Radiation Operation Storage Protector G-4 Regulation G-5 G-6 G-7 Temperature Operating Humidity Menu On Screen Display Menu Type Picture Contrast Brightness Color Tint Sharpness Reset Audio Bass Treble Balance BBE On/Off Stable Sound On/Off CH Set Up TV/CATV Auto CH Memory Add/ Delete Language V-chip CH Label Favorite CH Color Stream DVD/DTV CAPTION Control Level Sound Brightness Contrast Color Tint Sharpness Tuning Bass Treble Balance Back Light - A3-1 GENERAL SPECIFICATIONS Stereo,Audio Output,SAP Video Color Stream Channel(TV/Cable) CH Label Sleep Timer Sound Mute V-chip Rating G-8 G-9 OSD Language Clock and Timer Sleep Timer Max Time Step Program(On Timer / Off Timer) No Yes No Yes No Yes Yes Yes English French Spanish 120 Min 10 Min No No Sec No NEC 86-05 h 3V UM-4 x 2 pcs 23 Keys Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes No Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes No Yes No Yes No No No No No No No No No No No No No No No No No Yes Yes No Yes No No Yes Yes Yes G-10 Remote Control G-11 Features On/Off Timer Wake Up Timer Timer Back-up (at Power Off Mode) more than Unit Glow in Dark Remocon Format Custom Code Power Source Voltage(D.C) UM size x pcs Total Keys Keys Power 1 2 3 4 5 6 7 8 9 0 100 CH Up CH Down Volume Up Volume Down TV/Caption/Text CH1/CH2 TV/Video(TV/AV) CH RTN/CH ENT(Quick View) Sleep RE Call(Call) Reset Menu Enter Mute Exit MTS(Audio Select) Set + Set Multi Brand Keys CH Up(VCR) CH Down(VCR) Pause/Still TV/VCR(VCR) Code FF Rew Rec Play Stop TV VCR Cable Auto Degauss Auto Shut Off Canal+ CATV Anti-theft Rental Memory(Last CH) Memory(Last Volume) V-Chip -RC-JK Min A3-2 GENERAL SPECIFICATIONS Type BBE Auto Search CH Allocation StereoTV Sound (Ext Audio Input Only) Channel Lock Just Clock Function Game Position CH Label VM Circuit Full OSD Premiere Comb Filter Auto CH Memory Hotel Lock Closed Caption Stable Sound Energy Star Power On Memory Favorite CH Owner's Manual Remote Control Unit Rod Antenna Poles Terminal Loop Antenna Terminal U/V Mixer DC Car Cord (Center+) Guarantee Card Warning Sheet Circuit Diagram Antenna Change Plug Service Facility List Important Safeguard Dew/AHC Caution Sheet AC Plug Adapter Quick Set-up Sheet Battery UM size x pcs OEM Brand AC Cord AV Cord (2Pin-1Pin) Registration Card PTB Sheet 300 ohm to 75 ohm Antenna Adapter Safety Strap Disney Leaflet Mambo Mickey Aladdin Coupon Switch Front Power System Select Main Power SW Sub Power Channel Up Channel Down Volume Up Volume Down MENU TV/Video Rear AC/DC TV/CATV Selector Degauss Main Power SW Indicator Power Stand-by On Timer Terminals Front Video Input Audio Input Other Terminal Rear Video Input(Rear1) Video Input(Rear2) No No Yes No No No No No No No No No No No No No No No Yes Yes No No Yes No No No Yes Yes Yes Yes Yes Yes No No No No No No No RCA x 1 RCA x 2 Head Phone RCA x 1 No No USA,ORION Type No No No Yes No No No No No No No No Lines Yes No Yes No No Yes No English Spanish French No Yes No G-12 Accessories Language w/Guarantee Card G-13 Interface A3-3 GENERAL SPECIFICATIONS Audio Input(Rear1) Audio Input(Rear2) Video Output Audio Output Euro Scart Color Stream Diversity Ext Speaker DC Jack 12V(Center +) VHF/UHF Antenna Input AC Outlet Approx. W x D x H (mm) w/o Speaker,Legs Approx. W x D x H (mm) RCA x 2 No No No No No No Yes No F Type No 510.0 x 442.5 x 543 510.0 x 442.5 x 488.5 ( 38.3lbs) 17.4kg 17.0 kg ( 37.4lbs ) 21.3kg ( 46.9lbs) No ---Sets -/--- x -- x -No Double / Full Color 596 x 575 x 580 Yes Natural Dropping At 1 Corner / 3 Edges / 6 Surfaces 46 316 Sets/40' container PS 94V0 DECABROM PS 94V0 DECABROM No No Green procurement of ORION Phase3(Phase3A) G-14 G-15 Set Size Weight Net (Approx.) Net w/o Speaker,Legs Approx. Gross (Approx.) Master Carton Content Material Dimensions W x D x H(mm) Description of Origin Material Dimensions W x D x H(mm) Description of Origin G-16 Carton Gift Box D ...