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Hitachi ED-PJ32 Service Manual

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SERVICE MANUAL

Warning
The technical information and parts shown in this
manual are not to be used for: the development,
design, production, storage or use of nuclear, chemical,
biological or missile weapons or other weapons of
mass destruction; or military purposes; or purposes that
endanger global safety and peace. Moreover, do not
sell, give, or export these items, or grant permission for
use to parties with such objectives. Forward all inquiries
to Hitachi Ltd.
Be sure to read this manual before servicing. To assure safety from fi re, electric shock, injury, harmful
radiation and materials, various measures are provided in this Hitachi Multimedia LCD Projector. Be
sure to read cautionary items described in the manual to maintain safety before servicing.
1. When replace the lamp, to avoid burns to your fi ngers. The lamp becomes too hot.
2. Never touch the lamp bulb with a fi nger or anything else. Never drop it or give it a shock. They may
cause bursting of the bulb.
3. This projector is provided with a high voltage circuit for the lamp. Do not touch the electric parts of
power unit (circuit/ballast), when turn on the projector.
4. Do not touch the exhaust fan, during operation.
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.
1. Features -----------------------------------------------2
2. Specifi cations ----------------------------------------- 2
3. Names of each part ---------------------------------3
4. Adjustment -------------------------------------------- 5
5. Troubleshooting ------------------------------------ 11
6. Service points -------------------------------------- 16
7. Wiring diagram ------------------------------------- 29
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT.
Multimedia LCD Projector
Caution
Service Warning
Contents
August 2005 Digital Media Division
No.0556E
YK
PJ-LC9
(C12H)
ED-PJ32
8. Disassembly diagram ----------------------------- 33
9. Replacement parts list ---------------------------- 41
10.RS-232C communication ------------------------ 42
11. Block diagram -------------------------------------- 50
13.Basic circuit diagram ------------------------------ 52

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Summary of Contents for Hitachi ED-PJ32

  • Page 1: Table Of Contents

    Be sure to read this manual before servicing. To assure safety from fi re, electric shock, injury, harmful radiation and materials, various measures are provided in this Hitachi Multimedia LCD Projector. Be sure to read cautionary items described in the manual to maintain safety before servicing.

  • Page 2: Features

    PJ-LC9(C12H) 1. Features • High Brightness • Low Noise • Compact Body 2. Specifications Drive system TFT active matrix Liquid clystal Panel size 1.4cm (0.55 type) panel Number of pixels 858 (H) x 484 (V) (Picture size with full screen is 854(H)x480(V).) Lamp 165W UHB Video : Analog 0.7Vp-p(75Ω...

  • Page 3: Names Of Each Part

    PJ-LC9(C12H) 3. Names of each part ● Part names Projector Focus ring Remote sensor Vent Speaker Lens Elevator button Lens cover Front-Right side Elevator foot Lamp cover Filter cover (Lamp unit is inside.) (Air filter and intake vent are inside.) Bottom side Power switch Control buttons...

  • Page 4: Remote Control

    PJ-LC9(C12H) Controls LAMP indicator LAMP TEMP TEMP indicator POWER POWER indicator INPUT INPUT button Cursor buttons ▲,▼,◄,► MENU STANDBY/ON button STANDBY/ON Remote control STANDBY/ON button SEARCH button RGB button AUTO button VIDEO button SEARCH VIDEO BLANK button ASPECT button BLANK ASPECT AUTO MAGNIFY...

  • Page 5: Adjustment

    PJ-LC9(C12H) 4. Adjustment 4-1 Before adjusting 4-1-1 Selection of adjustment When any parts in the table 4-1 are changed, choose the proper adjusting items with the chart. Table 4-1: Relation between the replaced part and adjustment Adjustment Replaced White Color Convergence E-POS Ghost...
  • Page 6 PJ-LC9(C12H) 4-2 Convergence adjustment 1. Open FACTORY MENU and then select Signal pattern for internal adjustment OPTION > CNV-V. Use R and/or B so that three colors of images can be converged at center, top and bottom of the screen. 2.
  • Page 7 PJ-LC9(C12H) 4-5 Flicker adjustment (V.COM adjustment) Adjustment procedure Signals for internal adjustment 1. Make this adjustment after completing the adjustment in 4-4 Ghost adjustment. 2. Use DAC-P - V.COM - R: in the FACTORY MENU to adjust so that the flicker at the center of the screen is less than the flicker at the periphery.

  • Page 8: Color Uniformity Adjustment

    PJ-LC9(C12H) 4-8 Color uniformity adjustment Preparations 1. Perform these adjustments after the white balance 6. To temporarily turn correction off, place the adjustment described in Section 4-7. cursor on [C.UNIF.] in the Adjust Tone menu and 2. Make a color uniformity adjustment for the follow- press the [ ] key.
  • Page 9 PJ-LC9(C12H) Adjustment procedure 1 (When a color differential meter is used) 1. First adjust [MID-L] tone [G:]. 9. Similarly, measure adjustment points [No.3] to 2. Select adjustment point [No.2][G:]. [No.17] and adjust their color coordinates start- When the background is not [G] monochrome, ing in order from the small number points.
  • Page 10 PJ-LC9(C12H) Adjustment procedure 2 (visual inspection) 1. First adjust [MIN] tone [G:]. 6. View measurement points [No.2], [No.3], 2. Select [No.2] [G:]. [No.10] and [No.11]. Adjust the [R] and [B] of If the background is [G] monochrome, press the each measurement point so that they have the [ENTER] key on the Remote control transmitter same color as measurement point [No.1].

  • Page 11: Troubleshooting

    PJ-LC9(C12H) 5. Troubleshooting Check points *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...
  • Page 12 PJ-LC9(C12H) Power can not be turned on Disconnect voltage input at TSW from Power unit pins (1)(3)(5)(7) of E800 Open (circuit). And check on the PWB assembly TSW short or Main at standby open? mode? (1): +0V (3): +17V Short (5): +6.6V (7): +4.1V Fuse on the...
  • Page 13 PJ-LC9(C12H) Lamp does not light What is the Light state of LAMP indicator Is the LAMP Install the Lamp D303 during operation? installation correct? Not light Light Change the lamp. Lamp Does lamp light? Not light Is the voltage at the "L"...
  • Page 14 PJ-LC9(C12H) Picture is not displayed only when the RGB signal is input Check at operating mode voltage input at pins(1)(3)(5)(7) of Power unit E800 on the PWB (circuit) assembly MAIN? (1):+13.2V (3):+17V (5):+6.6V (7):+4.1V LCD PRISM PWB assembly MAIN assembly Picture is not displayed only when the VIDEO, S-VIDEO signal is input Check at operating mode...
  • Page 15 PJ-LC9(C12H) Can not control to RS-232C The check after parts change 1. PC power supply OFF 2. Connection of cable 3. Projector starting 4. PC starting Check the *When not operating : RS-232C cable. Use cross cable PC set up change of cable. Are pin No.

  • Page 16: Service Points

    PJ-LC9(C12H) 6. Service points 6-1 Lead free solder [CAUTION] This product uses lead free solder (unleaded) to help preserve the environment. Please read these instructions before attempting any soldering work. CAUTION Always wear safety glasses to prevent fumes or molten solder from getting into the eyes. Lead free solder can splatter at high temperatures (600˚C).
  • Page 17 PJ-LC9(C12H) 6-2 Replacing The LCD/PRISM assembly You should not replace separately the parts of the LCD/PRISM assembly. In case of a failure in any parts of LCD/PRISM assembly, replace the whole LCD/PRISM assembly. Do not disassemble the unit because replacement of separate parts is not possible.
  • Page 18 PJ-LC9(C12H) 3. Maintenance point Swab Each color part has same Holder Optical filter construction. By using swab and air duster, you can easily remove dust from panel and optical filter. Panel Actual formation Separatied formation 4. Cleaning the panels and optical filters (1) Turn on the set and lit on the lamp.
  • Page 19 PJ-LC9(C12H) 6-4 Cleaning up dust from multilens 1. Preparation Please prepare cleaning tools and materials as follows. (1) Air duster (Dust blower, spray can) (2) Swab for cleaning ; P#NX08061, ”Cotton stick L147” (3) Vacuum cleaner LAMP 2. Remove the lamp door and the lamp assy. (1) Turn off the projector, and unplug the power cord.

  • Page 20: Putting Batteries

    PJ-LC9(C12H) 6-5 Putting batteries WARNING Always handle the batteries with care and use them only as directed. Improper use may result in battery explosion, cracking or leakage, which could result in fi re, injury and/or pollution of the surrounding environ- ment.
  • Page 21 PJ-LC9(C12H) 6-6 Air filter WARNING ● Before caring, make sure the power switch is off and the power cable is not plugged in, then allow the projector to cool sufficiently. The care in a high temperature state of the projector could cause an electric shock, a burn and/or malfunction to the projector.
  • Page 22 PJ-LC9(C12H) 6. Position the air filter and filter cover into place. “PUSH” mark (1) Set an air filter into place. (Filter cover for bot- Push the points of “PUSH” mark. tom-up use) (Usual filter cover) (2) Interlocking the tabs, snap the cover into place.
  • Page 23 PJ-LC9(C12H) 6-7 Lamp WARNING HIGH VOLTAGE HIGH TEMPERATURE HIGH PRESSURE • The projector uses a high-pressure mercury glass lamp. The lamp can break with a loud bang, or burn out, if jolted or scratched, handled while hot, or worn over time. Note that each lamp has a different life- time, and some may burst or burn out soon after you start using them.
  • Page 24 PJ-LC9(C12H) ● Replace the Lamp A lamp has a finite product life. Using the lamp for long periods of time could cause the pictures darker or the color tone poor. Note that each lamp has a different lifetime, and some may burst or burn out soon after you start using them.

  • Page 25: Other Care

    PJ-LC9(C12H) 6-8 Other care WARNING Before caring, make sure the power switch is off and the power cable is not plugged in, and then allow the projector to cool suffi ciently. The care in a high temperature state of the projector could cause a burn and/ or malfunction to the projector.

  • Page 26: Related Messages

    PJ-LC9(C12H) 6-9 Notice of AUTO adjustment Use of AUTO adjustment with the image through RGB input optimizes V_POSI, H_POSI, H_SIZE and H_PHASE automatically. In case that projected image has dark tone around its peripheral, AUTO operation sometimes makes artifacts in the image, shifts capture area and so on. Those failures are caused by period of image data is not exactly distinguished to period of blanking on signal processing.

  • Page 27: Regarding The Indicator Lamps

    PJ-LC9(C12H) 6-11 Regarding the indicator lamps Lighting and flashing of the POWER indicator, the LAMP indicator, and the TEMP indicator have the mean- ings as described in the table below. Please respond in accordance with the instructions with in the table. POWER LAMP TEMP...
  • Page 28 PJ-LC9(C12H) 6-12 HIDDEN SERVICE MENU To display the OSD for “HIDDEN SERVICE MENU” set up. HIDDEN SERVICE By the control panel By the remote control transmitter MUTE COLOR BLACK 1. Display the Advance menu by 1. Display the menu by the SOFT RESET the “MENU”...

  • Page 29: Wiring Diagram

    PJ-LC9(C12H) 7. Wiring diagram...
  • Page 30 PJ-LC9(C12H)
  • Page 31 PJ-LC9(C12H)
  • Page 32 PJ-LC9(C12H)

  • Page 33: Disassembly Diagram

    PJ-LC9(C12H) 8. Disassembly diagram Make sure that the black cushions are attached on the speaker holders, when the upper case is detached or attached.
  • Page 34 PJ-LC9(C12H)
  • Page 35 PJ-LC9(C12H) Notice 1. Removes the UPPER CASE assembly (1) Turn over the projector slowly, so that the bottom is facing up. (2) Unscrew five tapping-screws on the bottom and two meter-screws on the rear. (3) Turn the focus ring in the direction shown in the figure to shift the lens inward. (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.
  • Page 36 PJ-LC9(C12H) 2. Cautions when removing the PWB assembly MAIN When removing the PWB assembly MAIN, there is danger of damaging the connector connecting cables. (1) Disconnect 13 cables and remove 3 screws. 3 screws PWB assembly MAIN (2) Lift up the rearward of the PWB assembly MAIN to the front, while pushing rear portion of bottom case toward the outside so that the terminals of MAIN board may not be caught in bottom case.
  • Page 37 PJ-LC9(C12H) (2) Take the Power Sheet off, and then unscrew a screw with a plastic washer. Screw POWER UNIT Power Sheet (CIRCUIT) In removing POWER BOARD(CIRCUIT) from the bottom case assembly, use flat screw driver or fine tool to unclip the holder with the arrow shown below. POWER UNIT(CIRCUIT) Clip 4.
  • Page 38 PJ-LC9(C12H) 5. Putting the power supply unit together after the maintenance of the POWER UNIT (CIRCUIT) and/or the 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...
  • Page 39 PJ-LC9(C12H) 6. How to exchange the DICHROIC OPTICS UNIT and the LENS ASS’Y. CAUTION Please remove the PANEL DUCT ASSY before the LENS ASS’Y. Please take care of two hooks on the PANEL DUCT ASSY. (1) How to detach the PANEL DUCT ASSY. Please remove three rivets and unclip two hooks to take the PANEL DUCT ASSY off.
  • Page 40 PJ-LC9(C12H) 7. Replace the LCD/PRSM assembly To keep up good condition on optics. Please pay attention to the LCD/PRSM ASSY exchange. Please follow the direction below in order to exchange parts. (1) How to remove damaged LCD/PRSM ASSY Please detach PANEL COVER. CAUTION When you take off PANEL COVER, please take care not to break its hooks.

  • Page 41: Replacement Parts List

    PJ-LC9(C12H) 9. Replacement Parts list PRODUCT SAFETY NOTE : Components marked with a have special characteristics important to safety. Before replacing any of there components, read carefully, the PRODUCT SAFETY NOTICE of this Service Manual. Don't degrade the safety of the projector through improper servicing.

  • Page 42: Rs-232C Communication

    PJ-LC9(C12H) 10. RS-232C communication RS-232C cable(Cross) CONTROL port RS-232C port of the projector of a computer - (1) (1) CD RD (2) (2) RD TD (3) (3) TD - (4) (4) DTR GND (5) (5) GND - (6) (6) DSR RTS (7) (7) RTS CTS (8)
  • Page 43 PJ-LC9(C12H) Requesting projector status (Get command) (1) Send the request code Header + Command data (‘02H’+‘00H’+ type (2 bytes)+ ‘00H’+‘00H’) from the computer to the projector. (2) The projector returns the response code ‘1DH’+ data (2 bytes) to the computer. Changing the projector settings (Set command) (1) Send the setting code Header + Command data (‘01H’+‘00H’+ type (2 bytes) + setting code (2 bytes)) from the computer to the projector.

  • Page 44: Command Data Chart

    PJ-LC9(C12H) Command data chart Command Data Names Operation Type Header Action Type Setting Code Power Turn off BE EF 06 00 2A D3 01 00 00 60 00 00 Turn on BE EF 06 00 BA D2 01 00 00 60 01 00 BE EF 06 00...
  • Page 45 PJ-LC9(C12H) Command Data Names Operation Type Header Action Type Setting Code User Gamma Point 1 BE EF 06 00 08 FE 02 00 90 30 00 00 Increment BE EF 06 00 6E FE 04 00 90 30 00 00 Decrement BE EF 06 00...
  • Page 46 PJ-LC9(C12H) Command Data Names Operation Type Header Action Type Setting Code COLOR TEMP BE EF 06 00 BC F4 02 00 B7 30 00 00 OFFSET B Increment BE EF 06 00 DA F4 04 00 B7 30 00 00 Decrement BE EF 06 00...
  • Page 47 PJ-LC9(C12H) Command Data Names Operation Type Header Action Type Setting Code OVER SCAN BE EF 06 00 91 70 02 00 09 22 00 00 Increment BE EF 06 00 F7 70 04 00 09 22 00 00 Decrement BE EF 06 00 26 71 05 00...
  • Page 48 PJ-LC9(C12H) Command Data Names Operation Type Header Action Type Setting Code ZOOM BE EF 06 00 D0 D0 02 00 0A 30 00 00 Increment BE EF 06 00 B6 D0 04 00 0A 30 00 00 Decrement BE EF 06 00 67 D1 05 00...
  • Page 49 PJ-LC9(C12H) Command Data Names Operation Type Header Action Type Setting Code MENU POSITION V BE EF 06 00 40 D7 02 00 16 30 00 00 Increment BE EF 06 00 26 D7 04 00 16 30 00 00 Decrement BE EF 06 00 F7 D6...

  • Page 50: Block Diagram

    PJ-LC9(C12H) 11. Block diagram...

  • Page 51: Connector Connection Diagram

    PJ-LC9(C12H) 12. Connector connection diagram CN103 Connector connection diagram...

  • Page 52: Basic Circuit Diagram

    PJ-LC9(C12H) 13. Basic circuit diagram Parts with hatching are not mounted. PWB assembly SW (C12H) PWB assembly REMC (C12H)
  • Page 53 4parallel 3series POWER UNIT (BALLAST) (C12H) Warning For handling of the circuit diagram, refer to the warning on the cover.
  • Page 54 Warning POWER UNIT (CIRCUIT) (C12H) For handling of the circuit diagram, refer to the warning on the cover.
  • Page 55 PWB assembly MAIN 1 (C12H)
  • Page 56 PWB assembly MAIN 2 (C12H)
  • Page 57 PWB assembly MAIN 3 (C12H)
  • Page 58 PWB assembly MAIN 4 (C12H)
  • Page 59 PWB assembly MAIN 5 (C12H)
  • Page 60 PWB assembly MAIN 6 (C12H)
  • Page 61 PWB assembly MAIN 7 (C12H)
  • Page 62 PWB assembly MAIN 8 (C12H)
  • Page 63 PWB assembly MAIN 9 (C12H)
  • Page 64 PWB assembly MAIN 10 (C12H)
  • Page 65 PWB assembly MAIN 11 (C12H)
  • Page 66 MEMO...
  • Page 67 PJ-LC9(C12H) Basic circuit diagram list PWB assembly SW PWB assembly MAIN 5 PWB assembly REMC PWB assembly MAIN 6 POWER UNIT BALLAST PWB assembly MAIN 7 POWER UNIT CIRCUIT PWB assembly MAIN 8 PWB assembly MAIN 1 PWB assembly MAIN 9 PWB assembly MAIN 2 PWB assembly MAIN 10 PWB assembly MAIN 3...
  • Page 68 PJ-LC9 YK No.0556 Digital Media Division QR65311 Printed in Japan (JE)

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