Download
Share
Print this page
Panasonic PT-40LC12 Service Manual
  1. Manuals
  2. Brands
  3. Panasonic Manuals
  4. Monitor
  5. PT-40LC12
  6. Service manual

Panasonic PT-40LC12 Service Manual

Multi media display
Hide thumbs Also See for PT-40LC12:

Advertisement

Quick Links

Download this manual
Order No. MKE0204850C1
B2
Multi Media Display
PT-40LC12 / PT-45LC12
SPECIFICATIONS
1

Advertisement

loading

Related Manuals for Panasonic PT-40LC12

Summary of Contents for Panasonic PT-40LC12

  • Page 1 Order No. MKE0204850C1 Multi Media Display PT-40LC12 / PT-45LC12 SPECIFICATIONS...
  • Page 2 1. SAFETY PRECAUSIONS 1.1. GENERAL GUIDELINES 1. For continued safety, no modification of any circuit should be attempted. 2. Disconnect AC Plug before disassembling this unit. 3. It is advisable to use an isolation transformer in the AC supply before servicing.
  • Page 3 jumpered AC plug and each exposed metallic cabinet part on the receiver, such as screwheads, connectors, etc. When the exposed metallic part has a return path to the chassis, the reading should be between 1 M and 12 M . When the exposed metal does not have a return path to the chassis, the reading must be infinity.
  • Page 4 wait until it has completely cooled off when replacing the Lamp Unit. 3. The lamp emits small amounts of UV-Radiation. Avoid direct-eye contact by covering the Lamp and wearing the UV cut protective glass. 4. The high pressure lamp involves a risk of explosion. Therefore, do not touch the Lamp Bulb when servicing.
  • Page 5 2. After removing an electrical assembly equipped with ES devices, place the assembly on a conductive surface such as aluminum foil, to prevent electrostatic charge buildup or exposure of the assembly. 3. Use only a grounded-tip soldering iron to solder or unsolder ES devices.
  • Page 6 8. BLOCK DIAGRAMS 9. SCHEMATIC DIAGRAMS 9.1. SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT NOTES 9.2. INTERCONNECTION SCHEMATIC DIAGRAM 9.3. FRONT JACK SCHEMATIC DIAGRAM 9.4. RGB JACK / OPERATION SCHEMATIC DIAGRAMS 9.5. AUDIO POWER / LAMP THERMISTOR / FRONT THERMISTOR / LAMP COVER SWITCH SCHEMATIC DIAGRAMS 9.6.
  • Page 7 11.2. MAIN PARTS SECTION (2)
  • Page 8 11.3. BASE FRAME SCTION...
  • Page 9 11.4. TV FARME SECTION...
  • Page 10 11.5. PACKING PARTS AND ACCESSORIES SECTION...
  • Page 11 12. REPLACEMENT PARTS LISTS BEFORE REPLACING PARTS, READ THE FOLLOWING: 12.1. REPLACEMENT NOTES 12.1.1. General Notes 1. Use only original replacement parts: To maintain original function and reliability of repaired units, use only...
  • Page 12 original replacement parts which are listed with their part numbers in the parts list. 2. IMPORTANT SAFETY NOTICE Components identified by the sign have special characteristics important for safety. When replacing any of these components, use only the specified parts. 3.
  • Page 13 the Infrared Remote Control Unit. 5. When replacing the Front Thermistor C.B.A. (Ref. No. E80) or the Base Front Unit (Ref. No. 21), be sure to place the Joint Filter (Ref. No. 24). 6. After replacing the Filter Unit (Ref. No. 27), be sure to perform "Reset Filter Time."...
  • Page 14 4. LCD Power C.B.A. (Ref. No. E20) replacement note: LCD Power C.B.A. is supplied as a unit only. Please note that individual parts on it are not supplied. However, the parts with Ref. No. in "EXPLODED VIEWS" are available separately as replacement parts. 5.
  • Page 15 Ref. No. Part No. Part Name & Description Remarks LSYK0905 BACK COVER UNIT LSKF0435 AV FRONT DOOR TEKC011 SHAFT DUMPER LSYY0018 FRONT COVER L UNIT LSYY0019 FRONT COVER R UNIT LSXA0459-HB PROJECTION UNIT ( A ) LSXA0465-HB PROJECTION UNIT ( B ) LSGF0052 LIGHT PREVENTION PLATE A,POLYCARBONATE 1 LSMA0604...
  • Page 16 Ref. No. Part No. Part Name & Description Remarks TMM14415 SUPPORT PLATE,PLASTIC LSGQ0059 FAN DUCT LSMA0605 FAN PLATE,STEEL FBL12G12L2CS DUCT FAN LSGF0051 LIGHT PREVENTION PLATE C,POLYCARBONATE 2 LSMA0603 TOP PLATE LEFT,STEEL LSMA0615 TOP PLATE RIGHT,STEEL LSMA0606 OPTICAL BASE PLATE,STEEL LSMA0602 TOP PLATE REAR,STEEL LSGQ0063 PIPE HOLDER...
  • Page 17 Ref. No. Part No. Part Name & Description Remarks LSQT0583A INSTRUCTION BOOK L6FCNGEH0001 FRONT FAN LSMF0078 SEAL FILTER 2 MKE LSJA0439 GROUNIDNG WIRE 2 MKE CONNECTOR CABLE W/PLUG,5V LSJA0432 2 MKE LSXA0446 LAMP FAN UNIT LSRF0008 VMFS0134 SHEET,NYLON-RAYON LSJA0414 GROUNDING WIRE J0KG00000034 FERRITE CORE XTV4+16A...
  • Page 18 Ref. No. Part No. Part Name & Description Remarks LSYF0532 FILTER TOOL LSUA0035 EXTENSION CABLE 12.3. ELECTRICAL REPLACEMENT PARTS LIST PRINTED CIRCUIT BOARD ASSEMBLY Ref. No. Part No. Part Name & Description Remarks LSEP3067A TV MAIN C.B.A. E.S.D. LSEB3062A1 LCD POWER C.B.A. NR LSEP3065A AUDIO POWER C.B.A.
  • Page 19 Ref. No. Part No. Part Name & Description Remarks LSRF0008 XTV3+20J TAPPING SCREW,STEEL 12.3.3. AUDIO POWER C.B.A. DIODES Ref. No. Part No. Part Name & Description Remarks D1101 B0EBNR000007 DIODE SI CAPACITORS Ref. No. Part No. Part Name & Description Remarks C1101 LSCE0134...
  • Page 20 PIN HEADERS Ref. No. Part No. Part Name & Description Remarks CONNECTOR CABLE W/PLUG,9V P3902 LSJA0425 CONNECTOR CABLE W/PLUG,27V P4591 LSJA0426 CONNECTOR CABLE W/PLUG,5V P4801 LSJA0427 JACKS Ref. No. Part No. Part Name & Description Remarks JK4590 K2HC103A0017 EARPHONE JACK SOCKET JK4801 K1U412A00008 S-JACK SOCKET...
  • Page 21 Ref. No. Part No. Part Name & Description Remarks VMFS0134 SHEET,NYLON-RAYON VMTS0059 CUSHION,RUBBER VMTS0035 CUSHION,RUBBER LSMF0057 SHEET,NYLON-RAYON LSLQ0307 FERRITE CORE LSJA0431 CONNECTOR CABLE W/PLUG,5V LSJA0430 CONNECTOR CABLE W/PLUG,5V 12.3.7. OPERATION C.B.A. TRANSISTORS Ref. No. Part No. Part Name & Description Remarks Q6301 2SA1309AIRTA...
  • Page 22 SWITCHES Ref. No. Part No. Part Name & Description Remarks SW6301 EVQ11G05R PUSH SWITCH SW6302 EVQ11G05R PUSH SWITCH SW6304 EVQ11G05R PUSH SWITCH SW6305 EVQ11G05R PUSH SWITCH SW6311 EVQ11G05R PUSH SWITCH MISCELLANEOUS Ref. No. Part No. Part Name & Description Remarks PNA4611M00HD INFRARED RECEIVER UNIT 12.3.8.
  • Page 23 13. SCHEMATIC DIAGRAMS FOR PRINTING WITH LETTER SIZE...
  • Page 24 Main Parts Location <Rear View> <Front View> Lamp Cover Air Filter <After removing the Rear Cover> <After opening the Base Front Panel Unit> Lamp Thermistor C.B.A. Projection Unit Temperature Fuse Lamp Fan (P1701) Front Fan Lamp P4503 Rear Jack C.B.A. Jack P4501 C.B.A.
  • Page 25 Error Indication Information Each LED indications facilitates finding the cause of the error. When an error is detected, each LED on the Center Panel will light up or flash when the AC Cord is plugged in. The detected error data will not be stored in the EEPROM. This data is cleared after the AC Cord is unplugged.
  • Page 26 How to solve the problem indicated by the Error Indication of LED Error Symptom Problem Possible Solution Lamp automatically turns off. Cooling Fan (Front Fan and/or Lamp Replace LCD Power C.B.A. Fan) malfunction. Still NG, replace the Are the Front FAN Projection Unit.
  • Page 27 Note: Before performing the troubleshooting, confirm that all connector cables in the unit are connected to connectors correctly. LAMP does not light up Power LED flashes orange twice every 5 seconds. Tighten screws of the Lamp Cover Unit. Still NG, replace the Lamp Cover SW (SW2921) on Lamp Cover Switch C.B.A.
  • Page 28 Lamp automatically turns off Power LED flashes orange once Replace LCD Power C.B.A. every 5 seconds. Are the Front FAN and Still NG, replace the Projection the Lamp FAN operating? Unit. Only the Front Replace the Front FAN stops. FAN. Only the Lamp Replace the Lamp FAN stops.
  • Page 29 No picture or abnormal picture ABNORMAL PICTURE: No Color Picture (Black and White picture) Abnormal Color Picture No Synchronization Picture Dark Picture Check that there is no picture or abnormal picture on the screen from all input terminals. (All input is NG.) Does the OSD appear on the Replace the Projection Unit.
  • Page 30 No sound from built-in both L-CH and R-CH Speakers Press "ACTION" button on the Remote Control to display MENU screen, and select "AUDIO" in MENU screen. Check if "SPEAKER" in AUDIO MENU is set to "ON." Select "ON." Pull out the Headphone from the Check if the Headphone is not connected to PHONES PHONES jack.
  • Page 31 LED INDICATIONS FOR ERROR CONDITION Each LED indication facilitates finding the cause of the error. When an error is detected, each LED on the Center Panel will light up or flash when the AC Cord is plugged in. The detected error data will not be stored in the EEPROM. This data is cleared after the AC Cord is unplugged. POWER LED TEMP LED LAMP LED...
  • Page 32 SERVICE CAUTION COVERING THE FRONT FAN CAUTION THE LAMP COVER SWITCH AND THE FRONT Warning: THERMISTOR CAUTIONS The unit MUST NOT be operated without When servicing, be sure to install the following parts. Otherwise, an Air Filter!! the unit power will not turn on. 1.
  • Page 33 HOW TO INSTALL THE FILTER TOOL 1. Put the Filter tool on the Front Fan as shown. 2. Press at the center of the Filter tool and release. (Click sound can be heard when the inside portions of the Filter tool hook to the inside edge of the Front Fan. ) Filter tool (LSYF0532) Hooking Portion Hooking Portion...
  • Page 34 BEFORE REMOVING THE PROJECTION Service Mode Map UNIT FROM THE UNIT AT THE USER’S How to ENTER Service Mode: LOCATION VOLUME DOWN button + TV/VIDEO key (on the Center Panel) (on the remote) (for more than 5 seconds in power off condition) CAUTION: 1.
  • Page 35 WHEN REPLACING THE PROJECTION 1. Picture Position Adjustment 1) Press and hold the VOLUME DOWN button on the unit UNIT ON THE UNIT AT THE USER’S and the RECALL key on the remote for over 5 seconds LOCATION in power on condition. The unit will go into the FACTORY mode.
  • Page 36 4) Loosen Screws “a” and “b.” top mark top edge right edge of of screen center line left right Screw "a" Screw "b" center line "A" Washer Washer left edge of screen Fig. 4-5 5) Adjust the Projection Unit to the left or the right so that F O C U S both width on the left (“A”) and on the right (“B”) become same.
  • Page 37 (Tilt Adjustment) 8) Adjust the Projection Unit by turning the hex nuts “c2” Note: and “d2” using a 10 mm hex. wrench so that both width in the top (“C”) and in the bottom (“D”) become same. There are 4 hex nuts “c1” “d1” “c2” “d2” on the Projection Then, the right and left marks are almost centered as Unit.
  • Page 38 2. Focus Adjustment 1) Loosen the 2 Screws on the Projection Lens until the Projection Lens can be moved. Hex Nut "d2" Hex Nut "d1" 2) Adjust the Projection Lens by rotating the Projection Lens so that each pixels in the seven portions are clearly visible to obtain the best focus.
  • Page 39 3. Set LAMP RUN TIME to the original value 1) Select LAMP RUN TIME in Service Mode (LCD Main C.B.A. (1)). 2) Press the VOLUME UP/DOWN key on the remote to change to the original value (value A) that was noted before removing the Projection Unit at the user’s location.
  • Page 40 REPLACEMENT OF LAMP Lamp Replacement Procedure: 1. Press the POWER button on the remote to turn off the power. Lamp Time Reset Procedure: 2. Wait for about 1 minute until the cooling fan stops. Be sure to reset the Lamp time to “0” after replacing the Lamp. Note: 1.
  • Page 41 REPLACEMENT OF FILTER UNIT Filter Replacement Procedure: Replace the Filter Unit when it remains clogged, dirty or damage even after cleaning. Filter Time Reset Procedure: 1. Remove the Front Cover R Unit from the latches. Be sure to reset Filter time to “0” after replacing the Filter. Remove the Filter Unit by releasing indented portion of the 1.
  • Page 42 CLEANING METHOD THE FILTER Note: The Filter should be cleaned about every 400 hours. THE SCREEN UNIT AND THE MIRROR CAUTION: •THE SCREEN UNIT (Lenticular Screen, Fresnel Lens) Operating with torn or damaged Filter may cause damage to The Lenticular Screen surface should be wiped gently with a the Projection unit.
  • Page 43 MAIN PARTS LOCATION <Rear View> <Front View> Lamp Cover Air Filter <After removing the Rear Cover> <After opening the Base Front Panel Unit> Lamp Thermistor C.B.A. Projection Unit Temperature Fuse Lamp Fan (P1701) Front Fan Lamp P4503 Rear Jack C.B.A. Jack P4501 C.B.A.
  • Page 44 WIRE AND LEAD POSITION DIAGRAM After servicing, make sure that all wires, leads, and clampers are placed in their original position. It is important for the best operation of the unit. Note: Use extreme care especially for the following. Sheet GND Plate P4503 P4602 P4502...
  • Page 45 HOW TO CHECK THE REAR JACK C.B.A. 5. Reconnect Connector cables to Connectors P2501, P2701, P2305 on the LCD Main C.B.A. 6. Reconnect Connector cables to Connector P804 on the TV 1. Remove the Rear Cover. Refer to Step 1 in HOW TO Main C.B.A.
  • Page 46 HOW TO CHECK THE TV MAIN C.B.A. 11. Reconnect Connector cable to Connector P1101 on the Audio Power C.B.A. AND THE REAR JACK C.B.A. 12. Install the Right Speaker Connector Leads into the TV Main C.B.A. by connecting Connector P4501. 1.
  • Page 47 <Checking position for the TV Main C.B.A. and the Rear Jack C.B.A.> Base Front Panel Unit Lamp Cover Screw Screw P2911 Front Thermistor C.B.A. <Front View> Extension Cable (fixture) Rear Jack C.B.A. TV Main C.B.A. P804 (from P1701/P1707 on LCD Power C.B.A.) P2501 P2701 P1101...
  • Page 48 MODEL NO. IDENTIFICATION MARK Use Marks shown in the chart below to distinguish the different models included in this Service Manual. MODEL MARK PT-40LC12 PT-45LC12 Not Used Note: Refer to Item 3 of Schematic Diagram Notes of Schematic Diagram and Circuit Board Layout Notes,...
  • Page 49 LARGE VIEW FOR WIRE AND LEAD POSITION DIAGRAM Here are the figures for the detailed reference. Sheet P4503 P4602 P4502 P4501 P3002 P3901 Speaker Connector Lead P2911 Sheet Sheet Speaker Connector Lead Connector Lead (from Front Thermistor C.B.A. Lamp Cover Switch C.B.A.) Fig.
  • Page 50 GND Wires Clampers Clampers Clampers Clampers P1005 (or P1007): GND Wire 1pin GND Plate P1010 P3006: (To Duct Fan) P4504 GND Wire 1pin (To Audio Power C.B.A.) Fig. 9...
  • Page 51 P2501 P2501 (To P5003) (To P5003) P2701 (To P3801) P2305 Clamper (To P6205) Clamper Fig. 9...
  • Page 52 GND Plate Clampers P1101 P804 P7001: GND Wire 1pin Fig. 9...
  • Page 53 Lamp Thermistor C.B.A. Temperature Fuse (P1701) GND Wire P1902 (from Lamp Fan) P1905 Lamp Socket P1903 (from cable Solenoid) P2307 GND Wire GND Wire (from Lamp GND Plate Thermistor) Clampers Clampers GND Plate Fig. 9...
  • Page 54 Connector cable (From P1702 on the LCD Power C.B.A. to P1905 on the LCD Main C.B.A.) Fig. 9...
  • Page 55 SERVICE FIXTURES AND TOOLS LSUA0035 Extension Cable LSYF0532 Filter tool Note: This Extension Cable is used only in the location shown in Fig. 11-3 of "Checking position for the TV Main C.B.A. and the Rear Jack C.B.A."...
  • Page 56 PT-40LC12 / PT-45LC12 9.2. INTERCONNECTION SCHEMATIC DIAGRAM INTERCONNECTION SCHEMATIC DIAGRAM NOTE: IMPORTANT SAFETY NOTICE: PARTS ENCLOSED IN DASHED LINES MARKED "PT COMPONENTS IDENTIFIED BY THE SIGN SPECIAL CHARACTERISTICS IMPORTANT FO WHEN REPLACING ANY OF THESE COMPONE USE ONLY THE SPECIFIED PARTS.
  • Page 57 LAMP COVER SWITCH C.B.A. P2921 RGB JACK C.B.A. FILTER CHILD C.B.A. P5003 P2501 (9 Pins) P2301 J2601 (8 Pins) J2602 P3901 P2301 USED FOR J2603 NON-UNIFOMITY COLOR PC IN P3801 P2701 P1903 SOLENOID J2604 COMPENSATION ONLY (10 Pins) INTERCONNECTION SCHEMATIC DIAGRAM PT-40LC12/PT-45LC12...
  • Page 58 9.3. FRONT JACK SCHEMATIC DIAGRAM FRONT JACK SCHEMATIC DIAGRAM NOTE: PARTS ENCLOSED IN DASHED LINES MARKED "PT VIDEO SIGNAL(MAIN/SUB) AUDIO SIGNAL TO TV MAIN C.B.A. P4502 P4591 R4591 AMP_GND D4593 D4592 SPEAKER_L_AUDIO R4590 AMP_R_OUT_AUDIO R4593 SPEAKER_R_AUDIO R4592 AMP_L_OUT_AUDIO FL3951 L3951 FL3952 L3952 P3903...
  • Page 59 PT-40LC12 / PT-45LC12 NOTE: NOTE: For placing a purchase order of the parts, N DASHED LINES MARKED "PT" ARE NOT USED. FOR SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT NOTES, be sure to use the part number listed in the parts list.
  • Page 60 PT-40LC12 / PT-45LC12 9.4. RGB JACK / OPERATION SCHEMATIC DIAGRAMS RGB JACK SCHEMATIC DIAGRAM NOTE: PARTS ENCLOSED IN DASHED LINES MARKED "PT R3906 SUB VIDEO SIGNAL FL3901 J0MAB0000055 R3907 FL3902 PC-IN J0MAB0000055 P3901 (TO REAR JACK C.B.A.) JK3901 R3909 K1FB115A0015...
  • Page 61 FOR SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT NOTES, be sure to use the part number listed in the parts list. REFER TO BEGINNING OF SCHEMATIC SECTION. Do not use the part number on this diagram. C.B.A.) LSJB3072 RGB JACK SCHEMATIC DIAGRAM LSJB3071 OPERATION SCHEMATIC DIAGRAM PT-40LC12/PT-45LC12...
  • Page 62 9.5. AUDIO POWER / LAMP THERMISTOR / FRONT THERMISTOR / LAMP COVER AUDIO POWER SCHEMATIC DIAGRAM NOTE: PARTS ENCLOSED IN DASHED LINES MARKED "PT CAUTION: FOR CONTINUED PROTECTION AGAINST FIRE HAZARD, REPLACE ONLY WITH THE SAME TYPE 1.6A 125/250V FUSE. ATTENTION: POUR UNE PROTECTION CONTINUE LES RISQUES D’...
  • Page 63 PT-40LC12 / PT-45LC12 LAMP COVER SWITCH SCHEMATIC DIAGRAMS NOTE: NOTE: For placing a purchase order of the parts, N DASHED LINES MARKED "PT" ARE NOT USED. FOR SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT NOTES, be sure to use the part number listed in the parts list.
  • Page 64 TEMPERATURE LAMP_SW_2 THERMO_2 SENSOR COVER_SW J2911 SW2921 TO LAMP COVER SWITCH K0L1BA000070 P2912 C.B.A. P2921 LAMP COVER SW LAMP_SW_2 LAMP_SW_1 LSJB3065 AUDIO POWER SCHEMATIC DIAGRAM LSJB3080 SW2911 LAMP THERMISTOR C.B.A. LSJB3081 FRONT THERMISTOR C.B.A. LSJB3082 LAMP COVER SWITCH C.B.A. PT-40LC12/PT-45LC12...
  • Page 65 KEYIN1 SW6304 SW6301 EVQ11G05R EVQ11G05R CH UP CH DOWN D6301 B3AGA0000072 SW6305 SW6302 POWER LED R6326 R6328 EVQ11G05R EVQ11G05R 1800 1800 VOLUME UP VOLUME DOWN SW6311 R6327 EVQ11G05R 3900 POWER LSJB3072 RGB JACK SCHEMATIC DIAGRAM LSJB3071 OPERATION SCHEMATIC DIAGRAM PT-40LC12/PT-45LC12...
  • Page 66 TO TV MAIN AUDIO IN3(R) C.B.A. P4602 P4801 AUDIO_GND AUDIO_GND LINE3_L_AUDIO L4804 AUDIO_GND D4801 D4802 LINE3_R_AUDIO FL4802 AUDIO_GND PC2_L_AUDIO AUDIO_GND PC2_R_AUDIO JK4802 AUDIO_GND K2HC103A0017 L4805 FL4803 PC AUDIO IN D4803 D4805 L4806 D4804 D4806 FL4804 LSJB3068 FRONT JACK SCHEMATIC DIAGRAM PT-40LC12/PT-45LC12...
  • Page 67 (9 Pins) P2301 J2601 (8 Pins) J2602 P3901 P2301 USED FOR J2603 (11 Pins) NON-UNIFOMITY COLOR P1102 P4504 P4604 P4703 PC IN P3801 P2701 P1903 SOLENOID J2604 COMPENSATION ONLY P1102 (4 Pins) (24 Pins) (10 Pins) INTERCONNECTION SCHEMATIC DIAGRAM PT-40LC12/PT-45LC12...
  • Page 68 Ref. No. of the connection parts such as lead cable, flexible cable which is supplied as a replacement parts. The Number of pins of the Connector. POWER SUPPLY C.B.A. MAIN C.B.A. P1503 P3004 (10 Pins) Connector No. on Main C.B.A. PT-40LC12/PT-45LC12...
  • Page 69 NOTE: NOTE: For placing a purchase order of the parts, be sure to use the part number listed in the parts list. FOR SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT NOTES, Do not use the part number on this diagram. REFER TO BEGINNING OF SCHEMATIC SECTION. NOTE: PARTS ENCLOSED IN DASHED LINES MARKED "PT"...
  • Page 70 NOTE: NOTE: For placing a purchase order of the parts, FOR SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT NOTES, be sure to use the part number listed in the parts list. Do not use the part number on this diagram. REFER TO BEGINNING OF SCHEMATIC SECTION. NOTE: I/O CHART OF IC2301 PARTS ENCLOSED IN DASHED LINES MARKED "PT"...
  • Page 71 LARGE VIEW FOR DISASSEMBLY/ASSEMBLY OF CABINET Here are the figures for the detailed reference. Screws "b" Screws "b" Screw "b" Screw "b" Screws "b" Screws "b" Screw "b" Screw "b" Screw "b" Screws "b" Screws "b" Screw "b" Rear Cover <Rear View>...
  • Page 72 Open AV Front Door Front Cover L Unit Front Cover R Unit Latches Latches AV Front Door <Front View> Fig. D1-2...
  • Page 73 Center Panel Unit Open Screw "b" Screw "b" Screw "b" Screw "b" Fig. D1-3...
  • Page 74 P6303 Operation C.B.A. Fig. D1-4...
  • Page 75 Lamp Cover Screw Screw Fig. D1-5...
  • Page 76 Base Front Panel Unit Screws "b" Screws "b" Screw "a" Open Screw "a" Screws "b" Screws "b" Screws "b" Screws "b" Fig. D1-6...
  • Page 77 P2911 GND Wire Screw "a" Front Thermistor C.B.A. Base Front Panel Unit Fig. D1-7...
  • Page 78 P4503 P4602 P4502 P4501 P3002 P3901 TV Main C.B.A. Front Jack C.B.A. RGB Jack C.B.A. After removing the Base Front Panel Unit <Front View> Fig. D1-8...
  • Page 79 Screw "a" Wire P6207 Screws "a" P1005 (or P1007) (Not used) (GND Wire 1pin) GND Plate P4504 P1010 P3006 (GND Wire 1pin) Fig. D1-9...
  • Page 80 P2501 P2701 P2305 Clamper Clamper LCD Main C.B.A. Fig. D1-10...
  • Page 81 Screw "a" GND Plate Clampers P1101 P804 Audio Power C.B.A. TV Frame Screws "b" Fig. D1-11...
  • Page 82 holes Lift up and slide P7001 (GND Wire 1pin) <Bottom View of TV Frame> Fig. D1-12...
  • Page 83 Rear Jack Panel Slot AC Cord Screw "c" Screw "c" Screw "d" Screw "d" Screw "d" Screw "d" Screw "d" <Back of Rear Jack C.B.A.> Fig. D1-13...
  • Page 84 TV Main C.B.A. Rear Jack C.B.A. Clampers P5004 GND Plate (Not used) P4601 P4603 P4604 Rear Jack C.B.A. Fig. D1-14...
  • Page 85 P3001 TV Main C.B.A. (Not used) Support Plate Screws "a" Screw "d" Screws "d" P6207 (Not used) Screw "d" Screw "d" P801 TV Frame Fig. D1-15...
  • Page 86 TV Main C.B.A. Fig. D1-16...
  • Page 87 After removing the Base Front Panel Unit <Front View> Fig. D2-1...
  • Page 88 Front Bar Screw "a" GND Wire Screw "a" P1005 (or P1007) Screw "a" P1010 (GND Wire 1pin) GND Wire GND Wire Screw "a" P3006 (GND Wire 1pin) Fig. D2-2...
  • Page 89 P2501 P2701 P2305 Clamper Clamper LCD Main C.B.A. Fig. D2-3...
  • Page 90 Duct Fan Unit Screw "a" Screw "a" Hooking Screw "a" Portion Screw "a" Fig. D2-4...
  • Page 91 Temperature Fuse (P1701) GND Wire Screws "e" Screw "a" Screw "a" P1905 Screw "e" (from LCD Lamp Socket Power C.B.A.) Screw "e" GND Wire cable GND Plate Screw "a" GND Wire Fig. D2-5...
  • Page 92 Screw "a" Screw "a" Optical Adjutment Plate <Rear View> Hooking Portions Fig. D2-6...
  • Page 93 Projection Unit Washer Washer Screw "f" Screw "f" <Front View> Fig. D2-7...
  • Page 94 Projection Unit Fig. D2-8...
  • Page 95 Lens hole of the Light Light Prevention Plate Prevention slit of the Light Plate Prevention Plate Lamp Fig. D2-9...
  • Page 96 Light Projection Lens Prevention Plate Ring of Projection Lens adhesive tape Fig. D2-10...
  • Page 97 After removing the Base Front Panel Unit <Front View> Fig. D3-1...
  • Page 98 Screws "a" Screws "a" P1010 GND Wire P4504 GND Plate Screw "a" Power GND Plate <Front View> Fig. D3-2...
  • Page 99 Duct Fan Unit Screw "a" Screw "a" Hooking Screw "a" Portions Clamper Screw "a" P804 P1101 Clamper Clamper Audio Power C.B.A. Fig. D3-3-1...
  • Page 100 Screw "f" Screw "f" Fan Plate Duct Fan Screw "f" Screw "f" Duct Fan Lead <Front View> Fig. D3-3-2...
  • Page 101 Boss Boss Screw "b" Screw "b" Audio Power C.B.A. Fig. D3-4...
  • Page 102 Temperature Fuse (P1701) Screws "e" Screw "a" Screw "e" P1905 (from LCD Lamp Socket Power C.B.A.) Screw "e" GND Wire cable GND Plate Screw "a" View A GND Wire Screw "a" Screw "a" GND Plate GND Plate Screw "a" View A Fig.
  • Page 103 Screw "b" GND Plate Screw "b" Power C.B.A. Screw "b" Lift up and slide Fig. D3-6-1...
  • Page 104 Boss Boss hole hole <Bottom View of LCD Power C.B.A.> Fig. D3-6-1...
  • Page 105 Connector Lead Fig. D3-6-2...
  • Page 106 Tabs Top Shield Plate Open P1703 hole Screw "j" Tabs Power Tabs Screw "j" Tabs Fig. D3-7...
  • Page 107 After removing the Base Front Panel Unit Front Fan <Front View> Fig. D4-1-1...
  • Page 108 Front Bar GND Wire Screw "a" Screw "a" <Front View> Fig. D4-1-2...
  • Page 109 After removing the Base Front Panel Unit Lamp Fan <Front View> Fig. D4-2-1...
  • Page 110 Screws "b" Screws "b" Back Panel Screw "b" Screw "b" Screws "b" Screws "b" <Rear View> Screen Unit Fig. D5-1...
  • Page 111 Top Mirror Plates Screws "b" Screws "b" Sheet Sheet Sheet Sheet Mirror Upper Slots (for model with 45 inch) Mirror support Mirror support bracket bracket Lower Slots (for model with 40 inch) <Front View> Fig. D5-2...
  • Page 112 Mirror support bracket Mirror Fig. D5-3-2...
  • Page 113 Screw "f" Screw "f" Screw "f" Screw "f" Screw "f" Screw "f" <Rear View> Screw "f" Screw "f" Screw "f" Screw "f" <Side View> Fig. D5-5...
  • Page 114 Screw "f" Screw "f" Screw "f" Screw "f" Screws "a" Light Prevention Plate Screw "f" Screw "f" Screw "f" Screw "f" <Front View> Fig. D5-6...
  • Page 115 hole Optical Base Plate hole hole Fig. D5-7...
  • Page 116 Tilt <Side View> Back Back Panel Panel Hooking Hooking Portion of Portion of Joint Plate Joint Plate <Front View> <Front View> (left) (right) Fig. D5-7...
  • Page 117 Air Grill Air Grill Thermistor leads Groove Groove Joint Filter Front Thermistor C.B.A. Fig. D6-1...
  • Page 118 Base Front Panel Unit Joint Filter Speaker-R Speaker-L Front Thermistor C.B.A. Sheet Sheet Lamp Cover Switch C.B.A. RGB Jack C.B.A. Front Jack C.B.A. Front Thermistor C.B.A. Connector Cable Sheet Lamp Cover Switch C.B.A. Wiring of Connector Cable Fig. D6-3...
  • Page 119 CABINET SECTION DISASSEMBLY METHOD When reassembling, perform the step (s) in the reverse order. Bend, route and dress the wires as they were originally. Note : a. Place a cloth or some other soft material under the P.C. Boards or Unit to prevent damage. b.
  • Page 120 REMOVAL OF THE TV MAIN C.B.A. AND 3. Open the Center Panel Unit by removing the 4 Screws. THE REAR JACK C.B.A. 1. Remove the Rear Cover by removing 20 Screws. Center Panel Unit Screws "b" Screws "b" Open Screw "b" Screw "b"...
  • Page 121 6. Open the Base Front Panel Unit by removing the 16 8. Disconnect Connectors P3002, P4602, P4502, P4503 and Screws. P4501 on the TV Main C.B.A. and Connector P3901 on the RGB Jack C.B.A. Then, remove the Base Front Panel Unit. Base Front Panel Unit Screws "b"...
  • Page 122 12. Lift up and slide the TV Frame straight out by releasing the 10. Disconnect Connectors P2501, P2701, P2305 on the LCD 2 Tabs from holes, and disconnect Connector P7001 while Main C.B.A. and release them from the clampers. sliding the TV Frame at this time. P2501 holes P2701...
  • Page 123 15. 1) Remove the Support Plate by removing the 2 Screws. 14. Remove the Rear Jack C.B.A. by disconnecting Connectors 2) Remove the 3 Screws on the TV Main C.B.A. P4601, P4603 and P4604 on the TV Main C.B.A. and 3) Remove the TV Main C.B.A.
  • Page 124 3. 1) Remove the Front Bar by removing 2 Screws. REMOVAL OF THE PROJECTION UNIT 2) Disconnect Connector P1005 (or P1007), P1010 on the TV Main C.B.A. Remove the 2 Screws on the 3 GND Projection Unit includes the Optical Block, the LCD Main Wires.
  • Page 125 6. 1) Disconnect the cable from the Lamp Socket by removing 8. Remove the 2 Screws and 2 Washers through the plate 2 Screws. holes while holding the Projection Unit. 2) Remove the Temperature Fuse on the Lamp House by Tips on removal of the Projection Unit: removing the 2 Screws.
  • Page 126 10. 1) Peel off the Light Prevention Plate on the Projection Unit. 2) Remove the Lamp from the Projection Unit. CAUTION: After removing the Projection Unit, take out the Light Prevention Plate and the Lamp from the Projection Unit once and keep them. Then, be sure to install the Light Prevention Plate and the Lamp into the new Projection Unit for replacement.
  • Page 127 REMOVAL OF THE AUDIO POWER C.B.A., 3. 1) Disconnect Connector P804 on the TV Main C.B.A. and release it from the clamper. THE DUCT FAN, THE LCD POWER C.B.A., 2) Disconnect Connector P1101 on the Audio Power THE POWER FAN AND THE C.B.A.
  • Page 128 4. Remove the Audio Power C.B.A. by removing the 2 Screws and releasing the 2 Bosses and release it from the clamper. Screw "b" Boss Boss Screw "b" Screw "b" GND Plate Audio Power C.B.A. Screw "b" Fig. D3-4 Power C.B.A.
  • Page 129 Reassembly Notes for LCD Power C.B.A.: Reassembly Notes for Power Fan: Install the LCD Power C.B.A. so that the bosses are Install the Power Fan so that the name plate (manufacture’s inserted into the holes on the bottom side of the LCD Power name etc.) faces in (not visible from the outside) as shown.
  • Page 130 REMOVAL OF THE FRONT FAN FROM REMOVAL OF THE LAMP FAN FROM THE THE UNIT UNIT 1. Remove the Rear Cover, the AV Front Door, the Front 1. Remove the Rear Cover, the AV Front Door, the Front Cover L Unit, the Front Cover R Unit, the Center Panel Unit, Cover L Unit, the Front Cover R Unit, the Center Panel Unit, the Lamp Cover and the Base Front Panel Unit.
  • Page 131 REMOVAL OF THE SCREEN UNIT, THE Top Mirror Plates Screws "b" Screws "b" MIRROR AND THE BACK PANEL 1. Remove the Rear Cover, the AV Front Door, the Front Cover L Unit and the Front Cover R Unit. Refer to Steps 1~4 Sheet Sheet in “HOW TO REMOVE THE TV MAIN C.B.A.
  • Page 132 Reassembly Notes for Mirror: Install the Mirror as following procedures. 1) Peel the Protection Sheet approx. 20 mm (maximum 22 mm) from the top and bottom edges of the Mirror to place the Sheet. Then, place the 4 sheets on the top and bottom edges of the Mirror as shown.
  • Page 133 4. 1) Remove the Light Prevention Sheet by removing the 3 Reassembly Notes for Back Panel: Screws. 1) Insert the Back Panel to the holes of the Optical Base 2) Remove the Back Panel by removing the 18 Screws. Plate. Then, lift up the Back Panel.
  • Page 134 REMOVAL OF THE FRONT JACK C.B.A., 6. Remove the Speaker -L and -R by removing the 8 Screws. THE RGB JACK C.B.A., THE FRONT Joint Filter THERMISTOR C.B.A., THE LAMP COVER SWITCH C.B.A. AND THE SPEAKER Screw "a" 1. Disconnect Connector P2921 on the Lamp Cover Switch Front Thermistor C.B.A.
  • Page 135 PLEASE REFER TO THE SCHEMATIC DIAGRAM AND PARTS LIST FOR PROPER PARTS CONTENT. 1.6A 125/250V COLD F1101 P2921 LSJB3065 SW2921 HOT CIRCUIT. BE CAREFUL AND USE AN ISOLATION TRANSFORMER WHEN SERVICING. LSJB3082 AUDIO POWER C.B.A. LSEP3065A LAMP THERMISTOR C.B.A. LSEP3080A1 FRONT THERMISTOR C.B.A. LSEP3081A LAMP COVER SWITCH C.B.A. LSEP3082A PT-40LC12/PT-45LC12...
  • Page 136 D6303 FL3903 FL3902 R6318 R6330 JK3901 Q6301 R6315 IC3901 C6302 R3903 FL3907 FL3905 FL3901 C3902 FL3904 3 U6301 FL3906 INFRARED C3901 P6303 RECEIVER L3905 P3901 LSJB3071 LSJB3072 LSJB3072 FRONT JACK C.B.A. LSEP3068A RGB JACK C.B.A. LSEP3072A OPERATION C.B.A. LSEP3071A PT-40LC12/PT-45LC12...
  • Page 137 SERIAL DATA/CLOCK P2912 P2921 MICROCONTROLLER MICROCONTROLLER LAMP COVER OPEN(H) U7101 (SUB TUNER) P6205 P2305 RF-IN OSD SERIAL DATA/CLOCK I2C SERIAL DATA/CLOCK LAMP THERMISTOR C.B.A. SERIAL DATA/CLOCK SERIAL DATA/CLOCK VIDEO TEMPERATURE SENSOR IC6501 P2307 P2901 TUNER MICROCONTROLLER OVERALL BLOCK DIAGRAM PT-40LC12/PT-45LC12...
  • Page 138 PR1701 P1702-12 P1905-12 STANDBY(L)/NORMAL(H)<FROM IC2301 (46)> P1702-14 P1905-14 LAMP ERROR PULSE(ON(H)/OFF(L)/ERROR(PULSE))<FROM IC2301 (11)> +19V IGNITER DC +17V (HIGH VOLTAGE LAMP POWER TRANSFORMER) /SWITCHING REGULATOR 20kV (STEP-DOWN CHOPPER DC/AC SYSTEM) P1301-1 INVERTER P1301-2 (150Hz) (fre=100kHz) LAMP POWER SUPPLY BLOCK DIAGRAM PT-40LC12/PT-45LC12...
  • Page 139 S-VIDEO2 CONNECT(L)/NO CONNECT(H) CONTROL OSD-BLANKING S-VIDEO3 CONNECT(L)/NO CONNECT(H) Q3703 VIDEO OUT RESET(L) RESET(L) UNSW +5V FROM SERIAL DATA1 SERIAL DATA1 SYSTEM CONTROL SERIAL DATA0 SERIAL DATA0 SW +9V BLOCK DIAGRAM SERIAL CLOCK SERIAL CLOCK VIDEO SIGNAL PATH I BLOCK DIAGRAM PT-40LC12/PT-45LC12...
  • Page 140 C3805 Q3802-3805 WF34 C3806 WF33 R3809 R3807 SW +5V WF37 WF38 WF39 PC(H)/SUB VIDEO(L) <FROM IC6001(29)> RGB JACK C.B.A. JK3901 WF54 WF53 WF52 P3901-1 P3901-3 P3901-5 PC-IN H-SYNC P3901-7 V-SYNC P3901-9 WF55 WF56 VIDEO SIGNAL PATH I BLOCK DIAGRAM PT-40LC12/PT-45LC12...
  • Page 141 DIR-Y IC9507 (INVERTER) SW +5V PI FLD SW +3.3V SUB PI V-SYNC TP2702 DIR-X WF77 SUB PI H-SYNC SYNC SUB PI CLOCK(76MHz) SEPARATION TP2703 Q2709 WF78 SUB H-SYNC SUB V-SYNC SUB REF. H-SYNC VIDEO SIGNAL PATH II BLOCK DIAGRAM PT-40LC12/PT-45LC12...
  • Page 142 Q2033, 2034 LEVEL SHIFTER Q2037, 2038 LEVEL SHIFTER IC2009 (LEVEL SHIFTER) SW +5V 1,30 SW +15.3V LEVEL SHIFTER LEVEL SHIFTER LEVEL SHIFTER LEVEL SHIFTER LEVEL SHIFTER LEVEL SHIFTER LEVEL SHIFTER 0/3.3V ---> 0/15.3V VIDEO SIGNAL PATH II BLOCK DIAGRAM PT-40LC12/PT-45LC12...
  • Page 143 A SW CTL 1 <(FROM IC6001(27)> A SW CTL 2 <(FROM IC6001(26)> AUDIO LINE OUT MUTE (H) <FROM IC6001(78)> 1 INPUT SELECT PIN 9 PIN 10 OUTPUT CPN 1 CPN 2 – – – AUDIO SIGNAL PATH BLOCK DIAGRAM PT-40LC12/PT-45LC12...
  • Page 144 UNSW +5V OSD BUSY(H) SW +3.3V TEMPERATURE P6303-1 P6204-1 KEY DATA 1 SENSOR (LAMP) R6272 SWITCH P6303-2 P6204-2 KEY DATA 0 TEMPERATURE DATA 3 P6205-10 P2305-10 P2307-2 P2801-2 TEMPERATURE DATA 4 P6205-11 P2305-11 P2307-1 P2801-1 R6273 SYSTEM CONTROL BLOCK DIAGRAM PT-40LC12/PT-45LC12...
  • Page 145 (OUT) GREEN RELAY LENS 2 (OUT) FIELD LENS POLARIZER GREEN GREEN UNIT (IN) FULL MIRROR DICHROIC DICHROIC MIRROR RELAY LENS 1 MIRROR GREEN BLUE LAMP INTEGRATOR P/S CONVERTER IC1991 SOLENOID SOLENOID (SHUTTER) REG. ON (H) (SHUTTER) OPTICAL BLOCK DIAGRAM PT-40LC12/PT-45LC12...
  • Page 146 20 µs2 20 µs2 MAIN V-SYNC SUB V-SYNC +3.2 Vp-p +4.4 Vp-p TP3802 0.2 V 20 µs2 TP3801 SUB B +0.8 Vp-p PIN 7 OF P5003 PIN 9 OF P3801 5 ms2 5 ms2 TP3801 0.2 V 20 µs2 WAVEFORMS PT-40LC12/PT-45LC12...

This manual is also suitable for:

Pt-45lc12