Download
Share
Print this page
  1. Manuals
  2. Brands
  3. Orion Manuals
  4. TV
  5. LCD2028D
  6. Service manual

Orion LCD2028D Service Manual

Hide thumbs

Advertisement

Quick Links

Download this manual
]=
ORION
SERVICE MANUAL
LCD2028D

Advertisement

loading

Related Manuals for Orion LCD2028D

Summary of Contents for Orion LCD2028D

  • Page 1 ORION SERVICE MANUAL LCD2028D...

  • Page 2: Lcd Panel

    1． Complete Unit Circuit diagram POWER SWITCH LCD PANEL CON 1 POWER BOARD SPEAKER CN11 CN22 REMOTE BOARD CON 2 AUDIO VIDEO MAIN BOARD DVD_IR KEY BOARD ON/ OFF ADJ DVD CD RO / DECODE BOARD DVD KEY BOARD...

  • Page 3: Main Board

    Main Board ． Power supply troubleshooting Display troubleshooting Audio troubleshooting Functionare troubleshooting...

  • Page 4: Power Problem

    1) Power problem If F1/3A with 12V？ Check fuse FI or external power E33/470μF/16V if Voltage is5 V Fuse burnt when power on？ Check if can power on Check power output （via button or R/C） (U16,U18,U19) Check F1 descending Check U21: if Check if the second Power supply network power supply,...
  • Page 5 2) Display problem（display Mosaic distortion/Mosaic） Check if the cable connected to panel is right and works normally Check if panel is ok? Check if the output of U5 cable socket is ok? Change the cable which drives the panel Change Check the power supply panel And timer circuit of U5...
  • Page 6 3)、Display problem （white screen） White screen Check if Voltage for panel is ok?( depend on the selected panel) Check G pole of Q24/AO3401 has Check if U5 has signal output? the change of 3.3-0V or 5-0V Check the circuit from the 98 U5 defective or Panel defective or CN8 connecting defective...
  • Page 7 4)、Display problem （black screen） Black screen Is there 5V backlight voltage (BLON) at CN19? Check if inverter power supply works nomally? Check the circuit of Q26 or I/O port of U21 (99 pin) Check the Replace Inverter external power supply...
  • Page 8 5).Audio problem No sound （No sound） Check if there is Audio input Is volume, MUTE settings correct? Is there signal output at CN11? Check if voltage at the 7 pin of U3/TPA1517NE is higher than 11V pin of U3 is higher or Check if voltage at the 8 equal to 9.2V Check if the 1...
  • Page 9 6) Functionare （TV TV no channel scan/no video Video） Check if RF imput signal is ok? Check voltage at the 7 of T1/TEDE9-2B4A is 5V? Check voltage at the 9 pin of T1 is 33V? Check voltage at the 3 pin of T1 is 0V? Check: is there I2C data at the 4 &5...
  • Page 10 7).Functionare（TV TV no sound，but have Audio） video Check if audio is ok under PC/AV modes Check is there signal at the 2 pin of SAW2/AF389A2D Check if the 1. SAW2 damaged circuit between 2. U21: the 29 Refer to “No sound” the 2 pin of pin have solder...
  • Page 11 8).Functionare（PC） PC Mode Video Video No signal centered Discolored viabration Check if R.G.B input signal Check if VS.HS signal is stable and regular? works well seetings System Run auto-adjust Check R.G.B Check VS.HS mismatch Check VS.HS settings is command circuit circuit input circuit...
  • Page 12 9)、Functionare（SCART、AV、S-V） SCART RGB、SCART Video、S- Video、AV下 No signal at all channels No signal Discolored except VGA Check if R.G.B input signal of U5 is ok? Check R.G.B System circuit (Under Check power Check VS.HS settings is SCART R.G.B mode, supply of U21 circuit incorrect.
  • Page 13 3. DVD Decode Board Operational Troubleshooting Display Troubleshooting Audio Troubleshooting Disc Playing Troubleshooting...
  • Page 14 Power on 1. Initialize related registers (servo,DSP,RISC) 2. Move code related with RISC to SDRAM 3. Reset RISC Display LOGO Does tray close? Close tray Does SLED move to inside? Move to inside 1. Judge if a disc has loaded 2.
  • Page 15 Power on Voltages 1. Check cable in all pins of item PWR CON 2. Check power block circuit aer normal Check LDO B1117-3V3 and Are 3V3 and 1V8 normal? B1117-1V8 and peripheral circuit Is Main Clock normal? Check oscillation circuit Display LOGO? Check reset circuit reset singal normal?
  • Page 16 If will the tray close Check the position-switch Signal TRAYOUT and automatically when it is open? in LOADER TRAYIN is correct? Check the circuit between SPHE8281D and driver circuit Signal TRAY+ & TRAY- correct? SS8050 SS8550 TO-92 footprint Check motor driver circuit Signal LOAD+ &...
  • Page 17 Check the peripheral circuit of Signal CDLDO and SPHE8281D & two transistor When read disc, Laser ON OK? DVDLDO is normal? (2SB1132) Check the peripheral circuit of Voltage of TP18 & TP21 OK? of two transistor (2SB1132) Check the circuit to connect loader OPU maybe damaged Load a disc? Laser off...
  • Page 18 Check SPHE8281D and its Signal TEO peripheral circuit Track on OK? (pin35 of SPHE8281D) normal? Signal TCO Check the TCO connection between SPHE8281D(pin42 and pin36) (pin42 of SPHE8281D) normal? Check SPHE8281D and its peripheral Signal RAD+ & RAD- normal? circuit Check the connection between OPU and BA5954FP Disc is ready?
  • Page 19 Key board View of copper Side...
  • Page 20 DVD Key board View of copper Side...

  • Page 21: Remote Board

    Remote board View of copper Side...
  • Page 22 01-POWER&AMP 05-UOC3 01-POWER&AMP.Sch 05-UOC3.Sch 02-INPUT 02-INPUT.Sch 06-AUDIO 06-AUDIO.Sch 03-NT68565 03-NT68565.Sch 04-TUNER 04-TUNER.Sch 08-0UTPUT 08-0UTPUT.Sch Title Size Number Revision Date: 14-Mar-2007 Sheet of C:\Documents and Settings\lilixiu\ 桌面 \B.TD604C.ddb File: Drawn By:...
  • Page 23 270ohm-0603-±5%-1/10W +12V 47uF-16V-±20%-4*7 － 105 ℃ 0.1uF-0603-Y5V-+80%-20%-50V 8.2V-LL-34-1/2W DC_12V 3G3A-250V AZ1117H-3.3(TR)E1 3PVCC CN10 + E25 C139 TO UOCIII 0.1uF-0603-Y5V-+80%-20%-50V 47uF-16V-±20%-4*7 － 105 ℃ 0.1uF-0603-Y5V-+80%-20%-50V DC-001- 内径为 2.0mm-G 0.1uF-0603-Y5V-+80%-20%-50V NC/0.01uF-0603-X7R-±10%-50V CN13 0.01uF-0603-X7R-±10%-50V DCDC5V AZ1117H-3.3(TR)E1 +3V3A AO3401 10Kohm-0603-±5%-1/10W TO NT68565 0.1uF-0603-Y5V-+80%-20%-50V NC/4PIN-2.0-D-H-G C304 4K7ohm-0603-±5%-1/10W 47uF-16V-±20%-4*7 －...
  • Page 24 NC/AV3-8.4-16( 绿、蓝、红 ) SCART_G SCART_B SCART_R VGA_VS VGAVS D351-015F-001- 短体 -G 100ohm-0603-±5%-1/10W MSCL VGA_R VGA_R DSW-4-011 2Kohm-0603-±5%-1/10W SDFL1608Q2R2KT(F) 47pF-0603-NPO-±5%-50V S-Y' VGA_SDA VGA_G VGA_G VGAHS VGA_B VGA_B 330pF-0603-X7R-±10%-50V 330pF-0603-X7R-±10%-50V 75ohm-0603-±5%-1/10W DVD-Cb VGAVS DCDC5V VGA_HS VGAHS DVD-Cr VGA_SCL 100ohm-0603-±5%-1/10W 2Kohm-0603-±5%-1/10W BAV99LT1(A7)-SOT-23 S-C' DVD-Y 47pF-0603-NPO-±5%-50V MLVS0603M07...
  • Page 25 GZ1608D121T(F) 3.3V-PVCC +3V3A + E4 5V_RGB C167 R195 100ohm-0603-±5%-1/10W 0.1uF-0603-Y5V-+80%-20%-50V 0.1uF-0603-Y5V-+80%-20%-50V 47uF-16V-±20%-4*7 － 105 ℃ C247 C143 R196 C249 C165 47uF-16V-±20%-4*7 － 105 ℃ C170 C221 0.1uF-0603-Y5V-+80%-20%-50V 100Kohm-0603-±5%-1/10W 0.1uF-0603-Y5V-+80%-20%-50V 0.1uF-0603-Y5V-+80%-20%-50V GZ1608D121T(F) 0.1uF-0603-Y5V-+80%-20%-50V +3V3A 0.1uF-0603-Y5V-+80%-20%-50V DVD-Y 0.1uF-0603-Y5V-+80%-20%-50V DVD-Y' VT_SEL1 VGA-5V GZ1608D121T(F) C119 0.1uF-0603-Y5V-+80%-20%-50V NC/0ohm-0603-±5%-1/10W...
  • Page 26 DVD_IR' A/D_IICSW NC/3PIN-2.54-D-H SCL3 CN23 SDA3 AIF_OUT EXT_AGC NC/5PIN-2.0-D-H VF389A1D- 视频 SAW1 TEDE9-2B4A VIFIN1 VIFIN1 VIFIN2 VIFIN2 EC0410-101K-R-L-F 5V/TV AF389A2D- 音频 SAW2 C234 C235 +33V C132 56ohm-0603-±5%-1/10W 47pF-0603-NPO-±5%-50V 0.01uF-0603-X7R-±10%-50V 220uF-16V-±20%-6*7 － 105 ℃ R301 0.1uF-0603-Y5V-+80%-20%-50V 47pF-0603-NPO-±5%-50V C115 R125 R145 R144 220ohm-0603-±5%-1/10W SIF1 NC/2SC3779E...
  • Page 27 3PVCC 220uF-16V-±20%-6*7 － 105 ℃ +3V3A GZ1608D121T(F) 22pF-0603-NPO-±5%-50V 0.1uF-0603-Y5V-+80%-20%-50V C199 C200 22pF-0603-NPO-±5%-50V 1uF-0603-Y5V-+80%-20% － 10V 12MHz-±30PPM-20PF-HC-49S R247 24.576MHZ-±30PPM-20PF-HC-49S 10Kohm-0603-±5%-1/10W CORE1V8 R130 100ohm-0603-±5%-1/10W 680ohm-0603-±5%-1/10W R182 HOUT 100ohm-0603-±5%-1/10W + E71 + E55 OUT1 OUT6 R207 39Kohm-0603-±5%-1/10W 510ohm-0603-±5%-1/10W 47uF-16V-±20%-4*7 － 105 ℃ 47uF-16V-±20%-4*7 － 105 ℃ C160 R273 TCLK...
  • Page 28 TDA1517P +12V 12V AP 1N4001-DO-41 C203 R116 A.OUTR C241 R117 A.OUTL 470uF-16V-±20%-8*9 － 105 ℃ 0.1uF-0603-Y5V-+80%-20%-50V 1Kohm-0603-±5%-1/10W 1uF-0603-Y5V-+80%-20% － 10V C239 470uF-25V-±20%-10*13 － 105 ℃ 1Kohm-0603-±5%-1/10W 1uF-0603-Y5V-+80%-20% － 10V LOUT C240 10Kohm-0603-±5%-1/10W 1000pF-0603-X7R-±10%-50V 1000pF-0603-X7R-±10%-50V +12V IC MUTE ROUT R244 LL4148-LL-34 470uF-16V-±20%-8*9 －...
  • Page 29 CN11 LOUT ROUT R257 R216 4PIN-2.54-D-H-G 22ohm-0603-±5%-1/10W 4K7ohm-0603-±5%-1/10W R101 BL_PW 68Kohm-0603-±5%-1/10W R138 PMBT3904 A.OUTSL PMBT3904 1Kohm-0603-±5%-1/10W CN19 22uF-25V-±20%-4*7 － 105 ℃ DCDC5V R142 0ohm-0603-±5%-1/10W BLON 6PIN-2.0-D-H-G R107 A.OUTSL' R102 NC/1Kohm-0603-±5%-1/10W NC/1Kohm-0603-±5%-1/10W 100ohm-0603-±5%-1/10W R103 47uF-16V-±20%-4*7 － 105 ℃ R236 10Kohm-0603-±5%-1/10W 4K7ohm-0603-±5%-1/10W R104 C215 NC/10Kohm-0603-±5%-1/10W...
  • Page 30 R50A R50B R50C R51A +12V/5A 10.11 R51B R52A R52B R51C R51D R51E R51F MOV1...