ViewSonic PJ452 Service Manual

ViewSonic PJ452 - LCD XGA Projector-4.9LBS Manual

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  • ViewSonic PJ452 | Service Manual - Page 1
    Service Manual ViewSonic PJ452 Model No. VS10948 LCD Projector (PJ452_SM Rev. 1a DEC. 2005) ViewSonic“ 381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583
  • ViewSonic PJ452 | Service Manual - Page 2
    2005 by ViewSonic Corporation. All rights reserved. No part of this publication may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language or computer language, in any form or by any means, electronic, mechanical, magnetic, optical, chemical, manual or
  • ViewSonic PJ452 | Service Manual - Page 3
    Adjustment 5 5. Troubleshooting 11 6. Service points 16 7. Wiring diagram 30 8. Disassembly diagram 34 9. Replacement parts list 42 10. RS-232C commands 43 11. Block diagrams 51 12. Connector connection diagram 52 13. Basic circuit diagram 53 ViewSonic Corporation Confidential
  • ViewSonic PJ452 | Service Manual - Page 4
    are provided in this Multimedia LCD Projector. Be sure to read cautionary items described in the manual to maintain safety before servicing. Service Warning 1. When replace the lamp, to avoid burns to your fingers. The lamp becomes too hot. 2. Never touch the lamp bulb with a finger or anything else
  • ViewSonic PJ452 | Service Manual - Page 5
    Liquid clystal panel Lamp RGB signal input VIDEO parts) 2.2kg(4.85lbs) Operation : 5~35°C Storage : -20~60°C Remote control x 1 Filter cover for bottom up use x 1 RGB cable x 1 User's manuals x 1 Power cords x 3 Batteries x 2 ViewSonic Corporation Confidential - Do Not Copy PJ452
  • ViewSonic PJ452 | Service Manual - Page 6
    3. Names of each part ● Part names Projector Vent Lens Lens cover Front-Right side Focus ring Remote sensor Speaker Elevator button Elevator foot Lamp cover (Lamp unit is inside.) Filter cover (Air filter and intake vent are inside.) Control buttons Ports (See below.) RGB port Restart switch
  • ViewSonic PJ452 | Service Manual - Page 7
    button LAMP TEMP POWER INPUT MENU STANDBY/ON Remote control SEARCH RESET STANDBY/ON button AUTO button BLANK button VOLUME button MUTE button KEYSTONE button Zoom + button - button MENU button Menu cursor buttons ENTER button RESET button ViewSonic Corporation Confidential - Do Not Copy PJ452
  • ViewSonic PJ452 | Service Manual - Page 8
    adjusting items with the chart. Table 4-1: Relation between the replaced part and adjustment Replaced part Convergence (Chap.4-2) E-POS (Chap.4-3) Dichroic optics unit LCD/LENS prism assembly PWB assembly Main Lamp unit assembly Adjustment Ghost Flicker NRSH (Chap.4-4) (Chap.4-5) (Chap
  • ViewSonic PJ452 | Service Manual - Page 9
    Adjustment procedure 1. Make this adjustment after completing the adjustment in 4-3. 2. Choose Advance menu > OPTION > SERVICE > GHOST > R,G and B, and set them to zero. 3. Use DAC-P - GHOST - adjust so that B color ghost is at a minimum. ViewSonic Corporation Confidential - Do Not Copy PJ452 6
  • ViewSonic PJ452 | Service Manual - Page 10
    press the [RESET] key and select [DEFAULT]. 6. Select GAMMA, SUB-CNT, and G: in the FACTORY MENU. If the background is white solid, press the [ENTER] key on the Remote control trasmitter to change white balance of 33 steps is best. ViewSonic Corporation Confidential - Do Not Copy PJ452 7
  • ViewSonic PJ452 | Service Manual - Page 11
    on the Remote control transmitter to RESET] key and select [DEFAULT]. When only 1 tone is to be reset, place the cursor on the tone to be reset, press the [RESET] key and select [DEFAULT]. Single tone and monochrome resets ON/OFF ON OFF ViewSonic Corporation Confidential - Do Not Copy PJ452 8
  • ViewSonic PJ452 | Service Manual - Page 12
    ] tone [R] and [B]. Select [No.2] [B:] and press the [ENTER] key on the Remote control transmitter to change to solid white. 12.Measure the color coordinates of adjustment point [No.1] and data set half as many as [MID-L] tone [G].) ViewSonic Corporation Confidential - Do Not Copy PJ452 9
  • ViewSonic PJ452 | Service Manual - Page 13
    If the background is [G] monochrome, press the [ENTER] key on the Remote control transmitter to change to solid white. 3. View measurement point [No.2] and [No.3]. Lower the [G] color intensity only 16 64 8 10 2 1 3 11 759 15 13 17 ViewSonic Corporation Confidential - Do Not Copy PJ452 10
  • ViewSonic PJ452 | Service Manual - Page 14
    5. Troubleshooting Check points *Top view of the projector after the silver gilding on the lamp house detached. PWB Assembly SW E800 E803 ESPL E801 E804 D303 D302 D301 E301 (LAMP) (TEMP) (Power) E802 P501 P601 P701 E807 E805 PWB assembly MAIN E302 E806 PWB assembly REMOTE ViewSonic
  • ViewSonic PJ452 | Service Manual - Page 15
    And check LAMP DOOR set? NG Set the LAMP DOOR Not light OK PWB assembly Main PWB assembly Main Short (0 ) Unplug power cord and disconnect cable CNLC, then measure resistance between pins (1) and (2) of CNLC. Open PWB assembly Limit SW ViewSonic Corporation Confidential - Do Not Copy PJ452
  • ViewSonic PJ452 | Service Manual - Page 16
    state of LAMP indicator D303 during operation? Light Not light Is the LAMP NG installation correct? YES Install the Lamp Change the lamp. Does lamp light? Light Lamp Not light E802 on PWB assembly MAIN. L (0V) PWB assembly MAIN ViewSonic Corporation Confidential - Do Not Copy 13 PJ452
  • ViewSonic PJ452 | Service Manual - Page 17
    , S-VIDEO signal is input Check at operating mode Are voltage input at pins(1)(3)(5)(7) of E800 NO on the PWB assembly MAIN? YES (1): +13.2V (3): +17V (5): +6.6V (7): +4.1V Power unit (circuit) PWB assembly MAIN LCD PRISM assembly ViewSonic Corporation Confidential - Do Not Copy PJ452 14
  • ViewSonic PJ452 | Service Manual - Page 18
    E800 the voltage correct? YES (1): +13.2V (3): +17V (5): +6.6V (7): +4.1V PWB assembly MAIN Use cross cable The check after parts change 1. PC power supply OFF 2. Connection of cable 3. Projector starting 4. PC starting *When not operating : PC set up change of cable. Power unit (circuit) No
  • ViewSonic PJ452 | Service Manual - Page 19
    when replacing components. part being serviced, to avoid poor servicing performance. Recommended soldering iron: Soldering iron with temperature control function (temperature range: 320-450˚C) Recommended temperature range per part: Part ViewSonic Corporation Confidential - Do Not Copy PJ452 16
  • ViewSonic PJ452 | Service Manual - Page 20
    disassemble the unit becaouse replacement of separate parts is not possible. LCD/PRISM ASSY 6-3 Cleaning up dust from panels and optical filters 1. Preparation WARNING Wear sunglasses to protect your eyes when you maintain the projector with its lamp on. Please prepare cleaning tools and materials
  • ViewSonic PJ452 | Service Manual - Page 21
    Each color part has same construction. By using swab and air duster, you can easily remove dust from panel and optical filter. 4. Cleaning the panels and optical filters (1) Turn on the set and lit on the lamp. (2) By using swab and air duster, remove the dust. Focusing dust makes you check the
  • ViewSonic PJ452 | Service Manual - Page 22
    2. Remove the lamp door and the lamp assy. (1) Turn off the projector, and unplug the power cord. (2) Remove the lamp door and the lamp assembly according to the description of chapter "Replacing the LAMP". 3. Maintenance point 4. Cleaning the multilens (1) By using the air duster, remove the
  • ViewSonic PJ452 | Service Manual - Page 23
    , align and insert the two AA batteries according to their plus and minus terminals as indicated in the remote control. 3. Close the battery cover. Replace the battery cover in the direction of the arrow and snap it back into place. ViewSonic Corporation Confidential - Do Not Copy PJ452 20
  • ViewSonic PJ452 | Service Manual - Page 24
    of air filter Filter cover for bottom-up use Please replace the air filter when it is damaged or too soiled. The air filter type number = NJ20922 An air filter of specified type will come even with the replacement lamp for this projector. ViewSonic Corporation Confidential - Do Not Copy 21 PJ452
  • ViewSonic PJ452 | Service Manual - Page 25
    Press and hold RESET button of the remote control or [ ] button of the keypad for 3 seconds. FILTER TIME reset window will appear. (4) Choose RESET using [ ] button. NOTE • Incorrectly resetting of the filter timer (resetting without replacement, or neglect of resetting after replacement) will result
  • ViewSonic PJ452 | Service Manual - Page 26
    from above. This is dangerous, since if the lamp's bulb has broken, the shards will fall out when the cover is opened. In addition, working in high places is dangerous. • Do not use the projector with the lamp cover removed. At the lamp replacing, make sure that the screws are screwed in firmly
  • ViewSonic PJ452 | Service Manual - Page 27
    , complete the following operation within 10 minutes of switching power on. Incorrectly resetting of the lamp timer (resetting without replacement, or neglect of resetting after replacement) will result in incorrect message functions. ViewSonic Corporation Confidential - Do Not Copy PJ452 24
  • ViewSonic PJ452 | Service Manual - Page 28
    to cool sufficiently. 2. After making sure that the projector is cool adequately, lightly wipe the lens with a commercially available lens-cleaning wipe. Do not touch the lens directly with your hand. Caring for the cabinet and remote control Incorrect care could have adverse influence such as
  • ViewSonic PJ452 | Service Manual - Page 29
    , S-VIDEO or COMPONENT input. The reason is why recognition of input signal's standard does not need to search the capture range from input signal itself. ViewSonic Corporation Confidential - Do Not Copy PJ452 26
  • ViewSonic PJ452 | Service Manual - Page 30
    FILTER TIMER. A note of precaution when cleaning the air filter. Please immediately turn the power OFF, and clean or change the air filter by referring to the "Air Filter" section of this manual. After you have cleaned or changed the air filter, please be sure to reset the filter timer. NOTE • A lamp
  • ViewSonic PJ452 | Service Manual - Page 31
    "Air Filter". After cleaning or changed the air filter, please be sure to reset the filter timer. After the treatment, resent the power to ON. NOTE • When the interior portion has become overheated, for safety purposes, the power source is automatically turned off, and the indicator lamps may
  • ViewSonic PJ452 | Service Manual - Page 32
    MENU To display the OSD for "HIDDEN SERVICE MENU" set up. HIDDEN SERVICE FILTER TIME ON MUTE COLOR BLACK SOFT RESET By the control panel By the remote control transmitter 1. Display the Advance menu by 1. Display the menu by the the "MENU" button.(If EASY "MENU" button. (If EASY MENU appears
  • ViewSonic PJ452 | Service Manual - Page 33
    7. Wiring diagram ViewSonic Corporation Attach the right and left elevator buttons, and attach the springs on them. First, affix the small iron part in the locations indicated on the diagram, then attach the silver gilding. Important Operations with instructions are areas that have implications
  • ViewSonic PJ452 | Service Manual - Page 34
    ViewSonic Corporation Important First, Fix one end of the earthing wire to the AC inlet metal of the power board(circuit). See the location using one screw. 31 Confidential - Do Not Copy Attach the black insulation sheet to the location indicated in the diagram. Wiring diagram 2 hooks PJ452
  • ViewSonic PJ452 | Service Manual - Page 35
    32 PJ452 Confidential - Do Not Copy ViewSonic Corporation PWB assembly MAIN it. Insert the three flexible cables into the connectors of the MAIN board. Connect the cable to PWB assembly REMOTE. ' Wrap the wire two times around the boss. '52. ' ' ' ' ' Wrap E802 around
  • ViewSonic PJ452 | Service Manual - Page 36
    ViewSonic Corporation 33 Confidential - Do Not Copy Pass the earthing wire underneath the insulation sheet indicated on the diagram. Affix insulation sheet, and secure it in place with one screw in the location indicated on the diagram. PJ452 Wiring diagram 4
  • ViewSonic PJ452 | Service Manual - Page 37
    8. Disassembly diagram ViewSonic Corporation Make sure that the black cushions are attached on the speaker holders, when the upper case is detached or attached. Confidential - Do Not Copy PJ452 34
  • ViewSonic PJ452 | Service Manual - Page 38
    ViewSonic Corporation Confidential - Do Not Copy PJ452 35
  • ViewSonic PJ452 | Service Manual - Page 39
    into a hole (2mm in diameter) on the right side of the projector to unclip the UPPER CASE assembly from the BOTTOM CASE assembly. (They will be separated with about 2mm gap.) (5) Shift the hole part around the AC inlet forward and upward. ViewSonic Corporation Confidential - Do Not Copy PJ452 36
  • ViewSonic PJ452 | Service Manual - Page 40
    MAIN Lift up earthing wire Disconnect the cable REAR 3.Removes POWER BOARD(CIRCUIT) (1) Unscrew 3 screws, and then get the BALLAST-BRACKET off. Lamp lead Screw Disconnect the lamp lead, and the cable CN1 from the POWER UNIT(ballast). ViewSonic Corporation Confidential - Do Not Copy 37 PJ452
  • ViewSonic PJ452 | Service Manual - Page 41
    POWER BOARD(CIRCUIT) from the bottom case assembly, use flat screw driver or fine tool to unclip the holder with the arrow shown below. damaging the small PWB connecting cables. Power Unit (BALLAST) CNBAR ViewSonic Corporation Disconnect the CNBAR from connector CN2, while pressing the sub
  • ViewSonic PJ452 | Service Manual - Page 42
    power supply unit with care to achieve the required insulation. Incorrect assembly could cause a fire and/or an electric shock. Attaching the Power Sheet correctly ViewSonic Corporation Confidential - Do Not Copy PJ452 39
  • ViewSonic PJ452 | Service Manual - Page 43
    UNIT Please remove four screws and four squere nuts, and take the LENS ASS'Y off. DICHROIC OPTICS UNIT LENS ASS'Y Moreover, separate LCD/PRSM ASSY and DICHROIC OPTICS UNIT in accordance with the instruction on the following page. ViewSonic Corporation Confidential - Do Not Copy PJ452 40
  • ViewSonic PJ452 | Service Manual - Page 44
    that the positioning boss cracks. Note that LCD PANEL don't come in contact with other parts when you install it. Please tighten up a screw (M2x8) in order of 1→2→3. reference : at tightening torque 0.15~0.3N·m. Please attach PANEL COVER. ViewSonic Corporation Confidential - Do Not Copy PJ452 41
  • ViewSonic PJ452 | Service Manual - Page 45
    versions. Power Cord RGB Cable VIDEO STANDBY/ON RGB SEARCH ASPECT AUTO BLANK MAGNIFY ON OFF FREEZE POSITION VOLUME MUTE KEYSTONE ZOOM -+ MENU ESC ENTER RESET Remote Control Instruction manual Filter Cover H ASSY C12SM ViewSonic Corporation Confidential - Do Not Copy PJ452 42
  • ViewSonic PJ452 | Service Manual - Page 46
    the cable (1) Turn off the projector and the computer power supplies. (2) Connect the CONTROL port of the projector with a RS-232C port of projector internal setup value. Increment setup value by 1. Decrement setup value by 1. Run a command. ViewSonic Corporation Confidential - Do Not Copy PJ452
  • ViewSonic PJ452 | Service Manual - Page 47
    an interval of at least 40ms between the response code and any other code. • The projector outputs test data when the power supply is switched ON, and when the lamp is lit. Ignore this data. • Commands are not accepted during warm-up. ViewSonic Corporation Confidential - Do Not Copy PJ452 44
  • ViewSonic PJ452 | Service Manual - Page 48
    Set Error Status BRIGHT BRIGHT Reset CONTRAST CONTRAST Reset MODE Set GAMMA Set User Gamma Pattern Set Turn off 06 00 (Air flow error) (Lamp time error) 09 00 10 00 (Filter missing error)(Inner Sencer error) 03 00 (Lamp error) ViewSonic Corporation Confidential - Do Not Copy PJ452 45
  • ViewSonic PJ452 | Service Manual - Page 49
    Names Operation Type User Gamma Point 1 User Gamma Point 2 User Gamma Point 3 User Gamma Point 4 User Gamma Point 5 User Gamma Point 6 User Gamma Point 7 User Gamma Point 8 COLOR TEMP Set COLOR TEMP GAIN R COLOR 00 00 00 00 00 00 00 00 ViewSonic Corporation Confidential - Do Not Copy PJ452 46
  • ViewSonic PJ452 | Service Manual - Page 50
    Names Operation Type COLOR TEMP OFFSET B COLOR COLOR Reset TINT TINT Reset SHARPNESS SHARPNESS Reset PROGRESSIVE Set MY MEMORY Load Set MY MEMORY Save Set ASPECT Set Get Increment 20 08 20 08 20 08 20 00 00 01 00 10 00 00 00 ViewSonic Corporation Confidential - Do Not Copy PJ452 47
  • ViewSonic PJ452 | Service Manual - Page 51
    Names Operation Type OVER SCAN OVER SCAN Reset V POSITION V POSITION Reset H POSITION H POSITION Reset H PHASE H SIZE H SIZE Reset AUTO ADJUST COLOR SPACE Set VIDEO FORMAT Set FRAME LOCK Set Get 00 08 00 07 00 00 00 00 00 01 00 00 00 ViewSonic Corporation Confidential - Do Not Copy PJ452 48
  • ViewSonic PJ452 | Service Manual - Page 52
    ON Get ENGLISH FRANÇAIS DEUTSCH ESPAÑOL ITALIANO NORSK NEDERLANDS PORTUGUÊS MENU POSITION H MENU POSITION H Reset SVENSKA PУCCKИЙ SUOMI POLSKI TÜRKÇE Get Get Increment Decrement Execute Header BE EF 03 06 00 BE 00 00 00 00 00 00 00 00 ViewSonic Corporation Confidential - Do Not Copy PJ452 49
  • ViewSonic PJ452 | Service Manual - Page 53
    My Screen LOCK Set Message Set AUTO SEARCH Set AUTO POWER OFF LAMP TIME LAMP TIME Reset FILTER TIME FILER TIME Reset MAGNIFY FREEZE Set Get Increment Decrement Execute Get Increment Decrement My Screen 00 00 00 00 00 01 00 00 00 ViewSonic Corporation Confidential - Do Not Copy PJ452 50
  • ViewSonic PJ452 | Service Manual - Page 54
    11. Block diagram ViewSonic Corporation RGB DDC CONTROL PANEL 0.6" LCD XGA AC INPUT IR RECEIVER REMC PWB TEMP SENSOR DC POWER SUPPLY PWB SWITCH SW PWB TEMP SENSOR AIR FLOW SENSOR TEMPSW FAN LAMP POWER SUPPLY PWB Lamp OPTICAL UNIT PROJECTION LENS 51 Confidential - Do Not Copy PJ452
  • ViewSonic PJ452 | Service Manual - Page 55
    12. Connector connection diagram ViewSonic Corporation Connector connection diagram (C12XM) Confidential - Do Not Copy 52 PJ452
  • ViewSonic PJ452 | Service Manual - Page 56
    13. Basic circuit diagram Parts with hatching are not mounted. Basic circuit diagram list 6 PWB MAIN 9 PWB assembly MAIN 10 5 PWB assembly MAIN 11 4 4 3 PWB assembly SW (C12XM) 3 2 2 1 A ViewSonic Corporation 1 PWB assembly REMC (C12XM) B C D E Confidential - Do Not Copy 53
  • ViewSonic PJ452 | Service Manual - Page 57
    4parallel x 3series 6 5 4 3 2 1 Warning For handling of the circuit diagram, refer to the warning on the cover. A B C D ViewSonic Corporation Confidential - Do Not Copy PJ452 54 6 5 4 3 2 1 POWER UNIT (BALLAST) (C12XM) E F G
  • ViewSonic PJ452 | Service Manual - Page 58
    6 5 4 3 2 1 Warning For handling of the circuit diagram, refer to the warning on the cover. A B C D ViewSonic Corporation Confidential - Do Not Copy PJ452 55 6 5 4 3 2 1 POWER UNIT CIRCUIT (C12XM) E F G
  • ViewSonic PJ452 | Service Manual - Page 59
    6 5 4 3 2 1 A ViewSonic Corporation B 56 C D Confidential - Do Not Copy PJ452 6 5 4 3 2 1 PWB assembly MAIN 1 (C12XM) E F G
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    6 5 4 3 2 1 A ViewSonic Corporation B 57 C D Confidential - Do Not Copy PJ452 6 5 4 3 2 1 PWB assembly MAIN 2 (C12XM) E F G
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    6 5 4 3 2 1 A ViewSonic Corporation B 58 C D Confidential - Do Not Copy PJ452 6 5 4 3 2 1 PWB assembly MAIN 3 (C12XM) E F G
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    6 5 4 3 2 1 A ViewSonic Corporation B 59 C D Confidential - Do Not Copy PJ452 6 5 4 3 2 1 PWB assembly MAIN 4 (C12XM) E F G
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    6 5 4 3 2 1 A ViewSonic Corporation B 60 C D Confidential - Do Not Copy PJ452 6 5 4 3 2 1 PWB assembly MAIN 5 (C12XM) E F G
  • ViewSonic PJ452 | Service Manual - Page 64
    6 5 4 3 2 1 A ViewSonic Corporation C12XM R Panel Part Mount B 61 C D Confidential - Do Not Copy PJ452 6 for XGA D4.5 PANEL 5 4 3 Mount 2 1 PWB assembly MAIN 6 (C12XM) E F G
  • ViewSonic PJ452 | Service Manual - Page 65
    C12XM G Panel Part 6 6 for XGA D4.5 PANEL 5 5 4 4 3 3 Mount 2 Mount 2 1 A ViewSonic Corporation B C D Confidential - Do Not Copy PJ452 62 1 PWB assembly MAIN 7 (C12XM) E F G
  • ViewSonic PJ452 | Service Manual - Page 66
    6 5 4 3 2 1 A ViewSonic Corporation C12XM B Panel Part Mount B 63 C D Confidential - Do Not Copy PJ452 6 for XGA D4.5 PANEL 5 4 3 Mount 2 1 PWB assembly MAIN 8 (C12XM) E F G
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    6 5 4 3 2 1 A ViewSonic Corporation B 64 C D Confidential - Do Not Copy PJ452 6 5 4 3 2 1 PWB assembly MAIN 9 (C12XM) E F G
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    6 5 4 3 2 1 A ViewSonic Corporation B 65 C D Confidential - Do Not Copy PJ452 6 5 4 3 2 1 PWB assembly MAIN 10 (C12XM) E F G
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    6 5 4 3 2 1 A ViewSonic Corporation B 66 C D Confidential - Do Not Copy PJ452 6 5 4 3 2 1 PWB assembly MAIN 11 (C12XM) E F G
  • ViewSonic PJ452 | Service Manual - Page 70
    Matrix below, for return to ViewSonic Corporation. Assessment A. What do you think about the content of this Service Manual? Unit 1. Precautions and Safety Notices 2. Specification Excellent Good Fair Bad 3. Name of Each Part 4. Adjustment 5. Troubleshooting 6. Service Points 7. Wiring Diagram
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LCD Projector
Service Manual
ViewSonic
381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583
ViewSonic
PJ452
(
PJ452_SM
Rev. 1
a DEC. 2005
)
Model No.
V
S10948