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Orion DTV2784 Service Manual

Orion DTV2784 Manual Online:

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Orion DTV2784 User Manual
Orion DTV2784 User Guide
Orion DTV2784 Online Manual

Text of Orion DTV2784 User Guide:

  • Orion DTV2784, ELECTRICAL ADJUSTMENTS 4. ELECTRICAL ADJUSTMENT PARTS LOCATION GUIDE (WIRING CONNECTION) W002 CP502 TP003 VR502 J708 J702 J705 J706 J707 VR401 J701 J704 SPEAKER CRT FB401 TU001 CRT MAIN PCB CD802 CP401 DIGITAL PCB CD801 CP1001 CD1001 AC IN D-6 CP802A CP801A R803 R805 TP022 TP024 CP801B CP804 CP802B J801 CRT PCB S502 S501 CD501 CRT CD804 S801

  • Orion DTV2784, 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 sol

  • TROUBLESHOOTING GUIDE NO COLOR Are the waveform at pins 6, 8 and 11 of J801 normal ? Yes No Defect of CRT or contact defects of J801. Are the waveform at pins 3, 4 and 5 of CP802 normal ? Yes No Check the output circuit and associated circuit. Are the waveform at pins 14, 15 and 16 of IC601 normal ? Yes No Are the waveforms at the input of Q801~Q805 and Q806 normal ? Yes No C

  • Orion DTV2784, IC DESCRIPTION OEC7144A (IC101) No. Pin name Symbol I/O Logic Function Option When unused 1 VHOLD V.HOLD_MAIN I- Condenser of slicer. -- 2 HLF HLF_MAIN I/O - Filter of slicer. -- 3 P94/SCL3/RxD2 SCL1 O1 IIC BUS(1) CLOCK output. C-MOS - 4 P93/SDA3/TxD2 SDA1 I/O 1 IIC BUS(1) DATA I/O. C-MOS - 5 P92/TB2/DIGR0 YUV-H O0 SW COMPONENT C-MOS OPEN 6 P91/TB1 O- Not used.(L output) C-MOS OPEN 7 P90/TB0 HSYNC I1 SYNC input for SD distinction. C-MOS PD 8 BYTE BYTE I- It connects it with VSS. - VSS 9 CNVss CNVss I - It connects it with VSS. When you write Flash "H" - PD 10 P87/XCIN/DIGG0 O - Not used.(32KHz IN) C-MOS OPEN 11 P86/XCOUT/DIGB0 O - Not used.(32KHz

  • Orion DTV2784, ELECTRICAL ADJUSTMENTS D-2 2-5: BRIGHT CENT 1. 2. 3. 4. 5. 6. 7. 8. 9. Receive the monoscope pattern. (RF Input) Set the screen mode to FULL. Using the remote control, set the brightness and contrast to normal position. Activate the adjustment mode display of Fig. 1-1 and press the channel button (17) on the remote control to select "BRI CENT". Press the CH. UP/DOWN button on the remote control until the white 2.7% is starting to be visible Receive the monoscope pattern. (Audio Video Input) Press the TV/VIDEO button on the remote control to set to the AV mode. Then perform

  • Orion DTV2784, ELECTRICAL ADJUSTMENTS D-4 2-18: Confirmation of Fixed Value (Step No.) Please check if the fixed values of each adjustment item is set correctly referring below. FUNCTION OSD C H BLK L H BLK R VS CORR V COMP BRI.MAX BRI.MIN CONT.CENT CONT.MIN COL.MAX COL.MIN SHARP.CENT SHARP.MAX SHARP.MIN SUB BIAS TEST STEREO TEST AUDIO H FREQ NO. 1 4 5 9 10 18 19 20 22 24 25 27 28 29 30 36 37 38 RF 02 06 02 11 00 120 30 55 20 120 20 35 50 20 00 00 00 07 CS 02 06 02 11 00 120 30 50 20 120 20 25 40 10 00 00 00 07 AV 02

  • Orion DTV2784, ELECTRICAL ADJUSTMENTS D-3 2-16: COR TOP/BTM 1. 2. 3. 4. 5. 6. 7. Receive the crosshatch signal from the Pattern Generator. Set the screen mode to FULL. Using the remote control, set the brightness and contrast to normal position. Activate the adjustment mode display of Fig. 1-1 and press the channel button (34) on the remote control to select "COR. TOP". Press the CH. UP/DOWN button on the remote control until both ends of the vertical lines become straight. Activate the adjustment mode display of Fig. 1-1 and press the channel button (35) on the remote control to select "COR. BTM". Press the CH. UP/DOWN button on the remote control until both ends of the verti

  • Orion DTV2784, A1-1 A1-2 A2-1 A3-1~A3-4 B1-1 B2-1, B2-2 C-1 C-1, C-2 C-3 D-1~D-6 E-1~E-5 F-1, F-2 G-1 H-1, H-2 H-3, H-4 I-1~I-4 I-5 J-1, J-2 J-3, J-4 J-5, J-6 J-7, J-8 J-9, J-10 J-11, J-12 J-13, J-14 J-15, J-16 J-17, J-18 J-19, J-20 J-21, J-22 J-23, J-24 J-25, J-26 K-1, K-2 L-1 M1-1 M1-1 M2-1~M2-7 TABLE OF CONTENTS A2-1 IMPORTANT SERVICE SAFETY INFORMATION ........................................................................................... ABOUT LEAD FREE SOLDER (PbF)............................................................................................................... TABLE OF CONENTS ...............................................

  • Orion DTV2784, C-2 WHEN REPLACING EEPROM (MEMORY) IC If a service repair is undertaken where it has been required to change the MEMORY IC, the following steps should be taken to ensure correct data settings while making reference to TABLE 1. INI +0+1+2+3+4+5+6+7+8+9+A+B+C+D+E+F 00 C1 A2 4D 1A 22 00 02 00 00 80 10 00 30 36 03 00 10 68 00 00 00 00 00 00 00 00 00 18 07 00 05 AA 00 20 79 00 00 73 00 00 00 00 00 00 00 00 00 00 00 00 30 70 B0 06 01 03 04 20 02 01 00 D0 02 B1 10 00 00 40 00 00 00 00 00 00 00 80 80 80 00 40 40 00 00 00 50 00 00 00 00 1E 00 0C 00 45 00 0

  • Orion DTV2784, IMPORTANT SERVICE SAFETY INFORMATION Operating the receiver outside of its cabinet or with its back removed involves a shock hazard. Work on these models should only be performed by those who are thoroughly familiar with precautions necessary when working on high voltage equipment. Exercise care when servicing this chassis with power applied. Many B plus and high voltage RF terminals are exposed which, if carelessly contacted, can cause serious shock or result in damage to the chassis. Maintain interconnecting ground lead connections between chassis, escutcheon, picture tube da

  • Orion DTV2784, TROUBLESHOOTING GUIDE NO VERTICAL Is the waveform at pin 6 of CP401 normal ? Yes No Check DY. Is the waveform at pin 2 of IC401 normal ? Yes No Check the circuit from pin 2 of IC401 to CP401. Is the waveform at pin 5 of IC401 normal ? Yes No Is the voltage at pin 6 of IC401 25V ? Yes No Check IC401 and check associated circuit. Check the 25V line. Is the waveform at pin 19 of IC601 normal ? No Yes Check the associated circuit of IC601. Check the circuit from pin 19 of IC601 to pin 5 of IC401. E-4

  • Orion DTV2784, TROUBLESHOOTING GUIDE NO SOUND Yes Is sound setting appropriate ? Yes No Check speaker. Is the AUDIO signal at pins 11 and 15 of IC701? Yes No Check IC701 and associated circuit . Check J701, J706, J707, J708 and at pins 19, 20 of CP2403 and associated circuit. E-5 No Yes Check the pins 2, 4 of IC701 and associated circuit . Is the waveform at pins 2,4, 10 and pin 12 of IC1001? Is the AUDIO signal input at pins 1, 3, 5~9 and 13 of IC701?

  • C-3 Confirm that the AC cord is plugged out. Using the Serial Communication Change JIG (JG198), connect the set to personal computer. (Refer to Fig. 1) RE-WRITE FOR DIGITAL SOFT FIRMWARE 1. 2. 3. Fig. 1 Ref. No. JG198 Part No. APJG198000 Parts Name Serial Communication Change JIG Remarks Up-Date of the Firmware JG176 Using the Flash UP-Date Soft Disc (JG199) and USA SD DTV ROM DISC(JG176), please

  • Orion DTV2784, ELECTRICAL ADJUSTMENTS D-1 1. ADJUSTMENT PROCEDURE Read and perform these adjustments when repairing the circuits or replacing electrical parts or PCB assemblies. 2. BASIC ADJUSTMENTS Prepare the following measurement tools for electrical adjustments. 1. Oscilloscope 2. Digital Voltmeter 3. Multi-sound Generator 4. Pattern Generator On-Screen Display Adjustment 1. In the condition of NO indication on the screen. Press the VOL. DOWN button on the set and the Channel button (9) on the remote control for more

  • Orion DTV2784, TROUBLESHOOTING GUIDE Is the heater voltage at pin 10 of J801 AC6.4V ? Is the high voltage of ANODE 27KV~28KV ? No NO RASTER Does the RASTER appear at maximum BRIGHT/CONTRAST ? Yes No Is the voltage of pin 1 of CP801 DC180V ? Yes No Check the output circuit and associated circuit. Check the 180V line. Yes Yes No Contact defects of CRT or CRT Socket. Check the HEATER circuit. Yes No Is collector voltages of Q405 DC115V and Q402 DC17.3V ? Check FB401 and associated circuit. No Yes Is the waveform at base of Q405 normal ? No Yes Is the waveform at pin 23 of IC601 normal ? Ch

  • GENERAL SPECIFICATIONS DC Car Cord (Center+) No Guarantee Card No Warning Sheet No Circuit Diagram No Antenna Change Plug No Service Facility List No Important Safeguard No Dew/AHC Caution Sheet No AC Plug Adapter No Quick Set-up Sheet No Battery Yes UM-4 x 2pcs OEM Brand No AC Cord No AV Cord (2Pin-1Pin) No Registration Card No Information Sheet No PTB Sheet No

  • Orion DTV2784, GENERAL SPECIFICATIONS Favorite CH No CH Label Yes Video Label No Locks Yes Password Yes V-Chip Yes Video Lock Yes CH Lock Yes Game Timer No Front. Panel Lock Yes Control Level Yes Volume Yes Contrast Yes Brightness Yes Color Yes Tint Yes Sharpness Yes Bass No Treble No Balance No Signal Meter Yes Stereo, SAP, Mono Yes Video Yes Component Yes Channel(TV/Cable) Yes CH Label Yes Video Label No Clock Yes Game Timer No On/Off Timer Yes Sleep Timer Yes Reset Yes Sound Mute Yes Picture Size Yes V-chip Rating Yes G-8 OSD Language English French Spanish G-9 Clock and Sleep Timer Max Time 120 Min Timer Step 10 Min On/

  • Orion DTV2784, DIODE RD47FBD-3 1N4002-PAN 1N4005-EIC RB085T-40 ENE271D-10A 1SS133T-77 1N4937-PAN 21DQ09N-TA2B1 AU02A-EIC RM11C-EIC DSS-272M-S00B SB140-EIC ERD07-15L50 FE201-6L49 MTZJ10B-EIC MTZJ15B-EIC MTZJ18B-EIC MTZJ2.2B-EIC MTZJ3.3B-EIC MTZJ3.9B-EIC MTZJ33B-EIC MTZJ5.6B-EIC MTZJ6.2B-EIC MTZJ8.2B-EIC MTZJ9.1B-EIC IC CAS-220/CS HY5DU561622DTP-D43 CS4345-CZZ AT24C128N-10SU-1.8 PST3229NR LA76327M-MPB-E NJM2750M(TE1) TC7W66FU(TE12L,F) LA7847-E BA7810T-V5 OEC7144A AN17822A SST39VF1681-70-4C-EKE TRANSISTOR PS2561AL1-1-V(W) ZR39640BGCG-

  • C-1 SERVICE MODE LIST This unit is provided with the following SERVICE MODES so you can repair, examine and adjust easily. To enter the Service Mode, press both set key and remote control key for more than 2 seconds. Set Key Remocon Key Operations VOL. (-) MIN 0 Releasing of V-CHIP PASSWORD. VOL. (-) MIN 1 Initialization of factory data. NOTE: Do not use this

  • Orion DTV2784, 1. REMOVAL OF ANODE CAP Read the following NOTED items before starting work. After turning the power off there might still be a potential voltage that is very dangerous. When removing the Anode Cap, make sure to discharge the Anode Cap's potential voltage. Do not use pliers to loosen or tighten the Anode Cap terminal, this may cause the spring to be damaged. REMOVAL 1. Follow the steps as follows to discharge the Anode Cap. (Refer to Fig. 1-1.) Connect one end of an Alligator Clip to the met

  • Orion DTV2784, ELECTRICAL ADJUSTMENTS D-5 3. PURITY AND CONVERGENCE ADJUSTMENTS NOTE 1. 2. 3. Turn the unit on and let it warm up for at least 30 minutes before performing the following adjustments. Place the CRT surface facing east or west to reduce the terrestrial magnetism. Turn ON the unit and demagnetize with a Degauss Coil. 3-1: STATIC CONVERGENCE (ROUGH ADJUSTMENT) 1. 2. 3. 4. 5. 6. 7. 8. Tighten the screw for the magnet. Refer to the adjusted CRT for the position. (Refer to Fig. 3-1) If the deflection yoke and magnet are in one body, untighten the screw for the body. Receive the green raster pattern from the color bar generator. Slide the deflection yoke until it touches the funnel side of the C

  • B2-2 DISASSEMBLY INSTRUCTIONS Supply soldering from upper position to lower position IC Supply the solder from the upper position of IC leads sliding to the lower position of the IC leads. (Refer to Fig. 2-6.) 2. Fig. 2-6 Soldering IronSolder IC Absorb the solder left on the lead using the Braided Shield Wire. (Refer to Fig. 2-7.) 3. Fig. 2-7 Soldering Iron Braided Shield Wire NOTE Do no

  • Orion DTV2784, GENERAL SPECIFICATIONS Mute Yes Exit Yes MTS(Audio Select) Yes Set + No Set - No Picture Size Yes Multi Brand Keys CH Up(VCR) No CH Down(VCR) No Pause/Still No TV/VCR(VCR) No CH Enter No Code Set (Code) No FF No Rew No Rec No Play No Stop No TV No VCR No Cable No G-11 Features Auto Degauss Yes Auto Shut Off Yes Canal+ No Cable(CATV) Yes Anti-theft No Rental No Memory(Last CH) Yes Memory(Last Volume) Yes V-Chip (Analog & Digital) Yes Type USA, ORION Type BBE No Auto Search No CH Allocation No SAP Yes Tone Control No Just Clock Function No Game Position No CH Label Yes VM Circuit No Full OSD No Premiere No Comb Filter No Lines Auto CH Memory Yes Hotel Lock No Closed

  • Orion DTV2784, MICON/CHROMA BLOCK DIAGRAM CHROMA IC IC601 LA76327M-MPB-E 3 5 1 9 30 TUNER CVBS VIDEO IN1 VIDEO IN2 Y IN 29 V IN X101 8MHz 1 OS101 57 OSD_R VOL UP 42 VOL DOWN CH DOWN MICON IC101 OEC7144A 55 33 OSD_G 34 OSD_B J801 6 11 8 F 7 DY 56 32 OSD_R 28 U IN POWER 23 19 V OUT H OUT OSD BLK1 54 V-OUT IC IC401 LA7847-E CRT V801 15 16 14 B OUT G OUT R OUT 21 BLANK1 Q802, Q806 BLUE OUT Q803, Q805 GREEN OUT Q801, Q804 RED OUT FB401 2 5 3 S-JACK J702 4 LINE1(REAR) J701 6 FRONT -VIDEO J705 2 5 YUV_IN J704 2 3 6 AV SW IC701 NJM2750M(TE1) 13 9 3 1 FRO

  • Orion DTV2784, GENERAL SPECIFICATIONS G-1 TV CRT CRT Size / Visual Size 27 inch / 676.0mmV SYSTEM CRT Type Normal Magnetic Field BV/BH +0.45G/0.18G Color System NTSC Speaker 2Speaker Position Front Size 2.0 x 3.5 Inch Impedance 8 ohm Sound Output MAX 1.0 + 1.0 W 10%(Typical) - W NTSC3.58+4.43 /PAL60Hz No G-2 Tuning Broadcasting System Analog US System M System Digital ATSC(8VSB), QAM Tuner and System 1Tuner Receive CH Destination USA(W/ CATV) 2 - 69, 4A, A-5 - A-1, CH Coverage A - I, J - W, W+1 - W+84 Intermediate Digital 44.00MHz Frequency Analog Picture(FP) 45.75MHz Sound(FS) 41.25MHz FP

  • Orion DTV2784, CP2403 87760-3416 1 10 11 12 13 14 15 16 17 18 19 2 20 21 22 23 24 25 26 27 28 29 3 30 31 32 33 34 4 5 6 7 8 9 SD DIGITAL MODULE BLOCK DIAGRAM 11 N17U17K1L3N1U14H17J17 7109 2413 T3R2R6T4T1L15 1618979394 80 79 U1 R5 R4 T2 R3 K15 J1 K2 66 63 65 52 54 56 57 61 20 19 M15 U7 12 16 11 16 16 ADR DAT WP WE ADR DAT 14 16 RESET +3.3V IC2402 8VSB/QAM/BTSC DEMOD. CS4345-CZZ IC2501 AUDIO DAC AUDIO-L AUDIO-R +5V RESET SIF AMP +2.6V +2.6V ASIC+1.8V +3.3V AFT(0) AFT(1) TX RX SD-H Y OUT C OUT SCLK ADATA WS BCLK SPDIF RF_SW I2C1_CLK I2C1_DATA F/E_RESET TS_DATA TS_CLK TS_FRAME TS_DVALID ADATA WS BCLK +3.3V C OUT Y OUT ASIC+1.8V +2.6V +5V +3.3V RESET SD-H

  • Orion DTV2784, B2-1 Masking Tape (Cotton Tape) DISASSEMBLY INSTRUCTIONS 2. REMOVAL IC Put Masking Tape (cotton tape) around the Flat Package IC to protect other parts from any damage. (Refer to Fig. 2-1.) 1. Fig. 2-1 NOTE REMOVAL AND INSTALLATION OF FLAT PACKAGE IC Some ICs on the PCB are affixed with glue, so be careful not to break or damage the foil of each IC leads or solder lands under the IC when removing it. NOTE Masking is carried out on all the parts located within 10 mm distance from IC leads. Blower type IC desolder

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