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ViewSonic PJ452 - LCD XGA Projector-4.9LBS Service Manual

Service manual
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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

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Summary of Contents for ViewSonic PJ452 - LCD XGA Projector-4.9LBS

  • Page 1: Service Manual

    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...

  • Page 2: Revision History

    Further, ViewSonic reserves the right to revise this publication and to make changes from time to time in the contents hereof without obligation of ViewSonic to notify any person of such revision or changes.

  • Page 3: Table Of Contents

    3. Names of each part 4. Adjustment 5. Troubleshooting 6. Service points 7. Wiring diagram 8. Disassembly diagram 9. Replacement parts list 10. RS-232C commands 11. Block diagrams 12. Connector connection diagram 13. Basic circuit diagram Confidential - Do Not Copy ViewSonic Corporation PJ656...

  • Page 4: Precautions And Safety Notices

    5. The LCD module assembly is likely to be damaged. If replacing to the LCD/PRISM assembly, do not hold the FPC of the LCD module assembly. 6. Use the cables which are included with the projector or specifi ed. Confidential - ViewSonic Corporation Do Not Copy PJ452...

  • Page 5: Specification

    Temperature range 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 Accessories Power cords x 3 Batteries x 2 Confidential - Do Not Copy ViewSonic Corporation PJ452...

  • Page 6: Names Of Each Part

    Restart switch by using a cocktail stick or similar and before turning on again, make the projector cool down at least 10 minutes without operating. Only push the Restart switch in these exceptional instances. ViewSonic Corporation Confidential - Do Not Copy PJ452...
  • Page 7 + button - button MENU POSITION POSITION button ENTER MENU button RESET M e n u cu r so r bu tt o n s ESC button ▲,▼,◄,► ENTER button RESET button Confidential - Do Not Copy ViewSonic Corporation PJ452...

  • Page 8: Adjustment

    Caution: Before this performance, make a note repress and hold the [ ] button together of your customer’s adjustments, because the with the [INPUT] button for 3 seconds or data is overwritten. more (the FACTORY MENU will appear). ViewSonic Corporation Confidential - Do Not Copy PJ452...
  • Page 9 FACTORY MENU to adjust so that G color ghost is at a minimum. 5. In the same way, use DAC-P - GHOST-B: in the FACTORY MENU to adjust so that B color ghost is at a minimum. ViewSonic Corporation Confidential - Do Not Copy PJ452...
  • Page 10 9. Repeat steps 7 to 8 above, and adjust so that 5. Then adjust colors R and B. brightness white balance of 33 steps is best. ViewSonic Corporation Confidential - Do Not Copy PJ452...

  • Page 11: Color Uniformity Adjustment

    Single tone and monochrome resets cannot be performed. FACTORY MENU Major adjustment lattice point position VID-AD C. UNIF. DAC-P GAMMA STRIPE OPTION Adjust tone menu No. 1 C.UNIF MID-L Major adjustment lattice point No. MID-H ON/OFF ViewSonic Corporation Confidential - Do Not Copy PJ452...
  • Page 12 (Adjust [MAX] tone [G] so that the adjustment that the coordinates are as follows. data set half as many as [MID-L] tone [G].) x = x1 ± 0.005 , y = y1 ± 0.010 ViewSonic Corporation Confidential - Do Not Copy PJ452...
  • Page 13 No. 8 deviation range No. 9 deviation range 3 11 3 11 3 11 No. 14 deviation range No. 15 deviation range No. 16 deviation range No. 17 deviation range 3 11 Confidential - Do Not Copy ViewSonic Corporation PJ452...

  • Page 14: Troubleshooting

    *Top view of the projector after the silver gilding on the lamp house detached. PWB Assembly SW ESPL E803 E800 E801 E804 D303 D302 D301 (LAMP) (TEMP) (Power) E301 E802 P501 P601 PWB assembly MAIN P701 E807 E805 E302 E806 PWB assembly REMOTE Confidential - Do Not Copy ViewSonic Corporation PJ452...
  • Page 15 Not light PWB assembly Main Unplug power cord and Short (0 ) disconnect cable CNLC, PWB assembly Main then measure resistance between pins (1) and (2) of CNLC. Open PWB assembly Limit SW Confidential - Do Not Copy ViewSonic Corporation PJ452...
  • Page 16 DC FAN of E807 on PWB (B Panel) assembly MAIN. L (0V) Measure voltage at pin(1) H (3.3V) DC FAN of E802 on PWB (R/G Panel) assembly MAIN. L (0V) PWB assembly MAIN Confidential - Do Not Copy ViewSonic Corporation PJ452...
  • Page 17 Check at operating mode voltage input at pins(1)(3)(5)(7) of E800 on the PWB assembly MAIN? (1): +13.2V (3): +17V Power unit (circuit) (5): +6.6V (7): +4.1V LCD PRISM PWB assembly MAIN assembly Confidential - Do Not Copy ViewSonic Corporation PJ452...
  • Page 18 (1): +13.2V (3): +17V (5): +6.6V (7): +4.1V Turn off the projector and about 8Ω disconnect the Speaker PWB assembly MAIN cable from ESPL.Measure the resistance of the Speaker. 0Ω or infinity Speaker Confidential - Do Not Copy ViewSonic Corporation PJ452...

  • Page 19: Service Points

    Chassis, metallic shield, etc. 420˚C±30˚C The PWB assembly which has used lead free solder (1) PWB assembly MAIN (4) POWER UNIT (BALLAST) (2) PWB assembly REMC (5) POWER UNIT (CIRCUIT) (3) PWB assembly SW Confidential - Do Not Copy ViewSonic Corporation PJ452...
  • Page 20 LCD panels should come to the upper portion of PWB assembly MAIN, but don’t con- nect them to the connectors. Make sure that flexible cables’ terminals don’t touch to any other parts during maintenance, especially when the projector is turned on. Confidential - Do Not Copy ViewSonic Corporation PJ452...
  • Page 21 (2) Set the Panel cover. (3) Re-assemble the PWB assembly MAIN. (4) Re-assemble the set. (5) While re-assembling, please clean the Panel cover and intake filter and filter cover by using vacuum cleaner. Confidential - Do Not Copy ViewSonic Corporation PJ452...
  • Page 22 Use special caution not to damage the ML-A. 5. Set the lamp door and the lamp assembly. Set the lamp door and the lamp assembly accoding the description of “Replacing the LAMP”. Confidential - Do Not Copy ViewSonic Corporation PJ452...
  • Page 23 When putting in batteries, 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. Confidential - Do Not Copy ViewSonic Corporation PJ452...

  • Page 24: Air Filter

    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. Confidential - Do Not Copy ViewSonic Corporation PJ452...
  • Page 25 TIME reset window will appear. (4) Choose RESET using [ ] button. NOTE • Incorrectly resetting of the fi lter timer (resetting without replacement, or neglect of resetting after replacement) will result in incorrect message functions. Confidential - Do Not Copy ViewSonic Corporation PJ452...
  • Page 26 Messages” and “Regarding the indicator Lamps”), replace the lamp as soon as possible. Using the lamp for long periods of time, or past the replacement date, could cause it to burst. Do not use old (used) lamps; this is a cause of breakage. Confidential - Do Not Copy ViewSonic Corporation PJ452...
  • Page 27 0hr .” is displayed, 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. Confidential - Do Not Copy ViewSonic Corporation PJ452...
  • Page 28 2. After making sure that the projector is cool adequately, lightly wipe with gauze or a soft cloth. If soiling is severe, dip soft cloth in water or a nautral cleaner dilute in water, and wipe lightly after wringing well. Then, wipe lightly with a soft, dry cloth. Confidential - Do Not Copy ViewSonic Corporation PJ452...
  • Page 29 2) There is no failure above in AUTO with video source through VIDEO, 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. Confidential - Do Not Copy ViewSonic Corporation PJ452...

  • Page 30: Related Messages

    Please be aware, however, that among lamp types, there are major differences in product lifetimes; a lamp may thus fail to light even prior to the lamp life. Confidential - Do Not Copy ViewSonic Corporation PJ452...

  • Page 31: Regarding The Indicator Lamps

    45 minutes. After the projector has suffi ciently cooled down, please make con- fi rmation of the attachment state of the lamp and lamp cover, and then turn the power on again. Confidential - Do Not Copy ViewSonic Corporation PJ452...
  • Page 32 1 ..Current usage status 2 ..Usage status before first reset 3 ..Usage status before second reset 9 ..Usage status before eighth reset 10..Total usage status with standby time Confidential - Do Not Copy ViewSonic Corporation PJ452...

  • Page 33: Wiring Diagram

    7. Wiring diagram Confidential - Do Not Copy ViewSonic Corporation PJ452...
  • Page 34 Confidential - Do Not Copy ViewSonic Corporation PJ452...
  • Page 35 Confidential - Do Not Copy ViewSonic Corporation PJ452...
  • Page 36 Confidential - Do Not Copy ViewSonic Corporation PJ452...

  • Page 37: Disassembly Diagram

    8. Disassembly diagram Make sure that the black cushions are attached on the speaker holders, when the upper case is detached or attached. Confidential - Do Not Copy ViewSonic Corporation PJ452...
  • Page 38 Confidential - Do Not Copy ViewSonic Corporation PJ452...
  • Page 39 (4) Stick a hard and thin stick 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. Confidential - Do Not Copy ViewSonic Corporation PJ452...
  • Page 40 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). Confidential - Do Not Copy ViewSonic Corporation PJ452...
  • Page 41 When removing the cable (CNBAR) connected to Power Unit (BALLAST), there is danger of damaging the small PWB connecting cables. Power Unit (BALLAST) CNBAR Disconnect the CNBAR from connector CN2, while pressing the sub-board (to prevent the stress on the sub-board). Confidential - Do Not Copy ViewSonic Corporation PJ452...
  • Page 42 POWER UNIT (BALLAST). WARNING Assemble the power supply unit with care to achieve the required insulation. Incor- rect assembly could cause a fi re and/or an electric shock. Attaching the Power Sheet correctly Confidential - Do Not Copy ViewSonic Corporation PJ452...
  • Page 43 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. Confidential - Do Not Copy ViewSonic Corporation PJ452...
  • Page 44 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. Confidential - Do Not Copy ViewSonic Corporation PJ452...

  • Page 45: Replacement Parts List

    All revised RSPLs with newly added items or any change made should be highlighted and correlated with the ECN/ECR approved by ViewSonic Corporation. This is to eliminate repeated cross checks of each item between this version and prior versions. STANDBY/ON...

  • Page 46: Rs-232C Commands

    Action (byte_0 - 1) Action Classification Content Change setting to desired value. Read projector internal setup value. Increment Increment setup value by 1. Decrement Decrement setup value by 1. Execute Run a command. Confidential - Do Not Copy ViewSonic Corporation PJ452...
  • Page 47 • Provide 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. Confidential - Do Not Copy ViewSonic Corporation PJ452...

  • Page 48: Command Data Chart

    9B FB 01 00 80 30 02 00 Ramp BE EF 06 00 0B FA 01 00 80 30 03 00 BE EF 06 00 C8 FA 02 00 80 30 00 00 Confidential - Do Not Copy ViewSonic Corporation PJ452...
  • Page 49 B6 30 00 00 OFFSET G Increment BE EF 06 00 26 F5 04 00 B6 30 00 00 Decrement BE EF 06 00 F7 F4 05 00 B6 30 00 00 Confidential - Do Not Copy ViewSonic Corporation PJ452...
  • Page 50 0E D1 01 00 08 20 01 00 NORMAL BE EF 06 00 5E DD 01 00 08 20 10 00 BE EF 06 00 AD D0 02 00 08 20 00 00 Confidential - Do Not Copy ViewSonic Corporation PJ452...
  • Page 51 01 00 14 30 00 00 TURN ON BE EF 06 00 5B D7 01 00 14 30 01 00 BE EF 06 00 F8 D6 02 00 14 30 00 00 Confidential - Do Not Copy ViewSonic Corporation PJ452...
  • Page 52 00 00 Decrement BE EF 06 00 B3 D6 05 00 15 30 00 00 MENU POSITION H Execute BE EF 06 00 DC C6 06 00 43 70 00 00 Reset Confidential - Do Not Copy ViewSonic Corporation PJ452...
  • Page 53 83 D2 01 00 02 30 00 00 FREEZE BE EF 06 00 13 D3 01 00 02 30 01 00 BE EF 06 00 B0 D2 02 00 02 30 00 00 Confidential - Do Not Copy ViewSonic Corporation PJ452...

  • Page 54: Block Diagram

    11. Block diagram Confidential - Do Not Copy ViewSonic Corporation PJ452...

  • Page 55: Connector Connection Diagram

    12. Connector connection diagram Connector connection diagram (C12XM) Confidential - Do Not Copy ViewSonic Corporation PJ452...

  • Page 56: Basic Circuit Diagram

    PWB assembly MAIN 9 PWB assembly MAIN 2 PWB assembly MAIN 10 PWB assembly MAIN 3 PWB assembly MAIN 11 PWB assembly MAIN 4 PWB assembly SW (C12XM) PWB assembly REMC (C12XM) Confidential - Do Not Copy ViewSonic Corporation PJ452...
  • Page 57 4parallel 3series POWER UNIT (BALLAST) (C12XM) Warning For handling of the circuit diagram, refer to the warning on the cover. ViewSonic Corporation Confidential - Do Not Copy PJ452...
  • Page 58 Warning POWER UNIT CIRCUIT (C12XM) For handling of the circuit diagram, refer to the warning on the cover. ViewSonic Corporation Confidential - Do Not Copy PJ452...
  • Page 59 PWB assembly MAIN 1 (C12XM) ViewSonic Corporation Confidential - Do Not Copy PJ452...
  • Page 60 PWB assembly MAIN 2 (C12XM) ViewSonic Corporation Confidential - Do Not Copy PJ452...
  • Page 61 PWB assembly MAIN 3 (C12XM) ViewSonic Corporation Confidential - Do Not Copy PJ452...
  • Page 62 PWB assembly MAIN 4 (C12XM) ViewSonic Corporation Confidential - Do Not Copy PJ452...
  • Page 63 PWB assembly MAIN 5 (C12XM) ViewSonic Corporation Confidential - Do Not Copy PJ452...
  • Page 64 C12XM R Panel Part for XGA D4.5 PANEL Mount PWB assembly MAIN 6 (C12XM) ViewSonic Corporation Confidential - Do Not Copy PJ452...
  • Page 65 C12XM G Panel Part for XGA D4.5 PANEL Mount PWB assembly MAIN 7 (C12XM) ViewSonic Corporation Confidential - Do Not Copy PJ452...
  • Page 66 C12XM B Panel Part for XGA D4.5 PANEL Mount PWB assembly MAIN 8 (C12XM) ViewSonic Corporation Confidential - Do Not Copy PJ452...
  • Page 67 PWB assembly MAIN 9 (C12XM) ViewSonic Corporation Confidential - Do Not Copy PJ452...
  • Page 68 PWB assembly MAIN 10 (C12XM) ViewSonic Corporation Confidential - Do Not Copy PJ452...
  • Page 69 PWB assembly MAIN 11 (C12XM) ViewSonic Corporation Confidential - Do Not Copy PJ452...

  • Page 70: Block Diagrams

    Add.: Fax: Tel: E-mail: After completing this form, please return it to ViewSonic Quality Assurance in the USA at facsimile 1-909-839-7943. You may also e-mail any suggestions to the Director, Quality Systems & Processes (marc.maupin@viewsonic.com) Confidential - Do Not Copy...

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