Hitachi CPX270W Service Manual
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Hitachi CPX270W Service Manual

Hitachi CPX270W Service Manual

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SERVICE MANUAL

Be sure to read this manual before servicing. To assure safety from fire, electric shock, injury, harmful
radiation and materials, various measures are provided in this Hitachi Multimedia LDC Projector. Be sure to
read cautionary items described in the manual to maintain safety before servicing.
1. When replacing the lamp, avoid burns to your fingers. The lamp becomes too hot.
2. Never touch the lamp bulb with a finger 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, when turning on the projector.
4. Do not touch the exhaust fan, during operation.
5. The LCD module assembly is likely to be damaged. If replacing the LCD module assembly, do not hold
the FPC of the LCD module assembly.
1. Features -------------------------------------------------- 2
2. Specifications -------------------------------------------- 2
3. Names of each part ------------------------------------ 3
4. Adjustment ----------------------------------------------- 6
5. Troubleshooting ---------------------------------------- 12
6. Service points ------------------------------------------ 18
7. Block diagram ------------------------------------------ 25
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT.
Multimedia LCD Projector
February 2001 Digital Media Systems Division
Caution
Service Warning
Contents
8. Connector connection diagram --------------------- 26
9. Wiring diagram ----------------------------------------- 27
10.Basic circuit diagram ---------------------------------- 31
11.Disassembly diagram --------------------------------- 45
12.Replacement parts list -------------------------------- 47
13.Option parts list ----------------------------------------- 48
14.Communication Data --------------------------------- 49
SM0511
CPX270W

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  • Page 1: Table Of Contents

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

  • Page 2: Safety Precautions

    ALL PRODUCTS CE MARK Before any service is performed on the chassis an 1. HITACHI products may contain the CE mark on isolation transformer should be inserted between the the rating plate indicating that the product power line and the product.

  • Page 3: Picture Tube

    POUR TOUS LES PRODUITS LABEL CE Avant d’effectuer une intervention d’entretien sur le 1. Les produits HITACHI peuvent avoir reçu le label châssis, vous devez insérer un transformateur d’isolement CE qui figure sur la plaque signalétique pour indiquer entre la ligne d’alimentation électrique et le produit.
  • Page 4 Hochspannung sollte immer auf den festgelegten Der Gebrauch von Ersatzteilen, die nicht dieselben Wert des Gehäuses beschränkt bleiben und nicht Sicherheitsmerkmale haben wie die empfohlenen mehr. Betrieb bei höherer Spannung kann zum HITACHI Ersatzteile, wie sie in der Ersatzteilliste Versagen Bildröhre oder hoher aufgeführt sind, kann zu elektrischem Schlag, Feuer,...

  • Page 5: Features

    CP-X270W 1. Features High brightness, High resolution Compact size, light weight for portability RS232C Communication Complies with VESA DDC1/2B specifications Auto-adjustment function 2. Specifications Drive system TFT active matrix Liquid crystal Panel size 0.7 inches panel Number of pixels 1024 (H) × 768 (V) Lamp 130W UHB System...

  • Page 6: Names Of Each Part

    CP-X270W 3. Names of each part Part names Zoom Knob Focus Ring Remote Control Sensor Power Switch Lens AC Inlet Slide Lens door (to the Power Cord) Foot Adjuster Ventilation Openings (Intake) FRONT/LEFT VIEW OF THE PROJECTOR Control Panel RESET Button LAMP Indicator MUTE Button TEMP Indicator...

  • Page 7: Remote Control Transmitter

    CP-X270W VIDEO Button RGB Button STANDBY/ON Button MENU SELECT Button Button Button Button RESET Button Button MENU Button POSITION Button MAGNIFY Button VOLUME Button MAGNIFY Button VOLUME Button MAGNIFY Button FREEZE Button MUTE Button AUTO Button BLANK Button TIMER Button Battery Holder REMOTE CONTROL TRANSMITTER Loading the Battery...
  • Page 8 CP-X270W Function for service Function Operation Press the RESET button of the projector or the TIMER Displayed the operating time of the lamp button of the remote control, for 3 seconds. Press the RESET button of the projector or the remote control MENU.

  • Page 9: Adjustment

    CP-X270W 4. Adjustment 4 - 1 Before adjusting 4. Perform all adjustments from the Adjustment menu. 1. Before starting adjustment, warm up the projector Perform the following operations to display the for about 10 min. (Blank white) 2. Set Zoom Wide to Max. and project an image a Adjustment menu.
  • Page 10 CP-X270W 4 - 4 - 1 PSIG G adjustment (vertical stripe adjustment) Signals for internal adjustment Adjustment procedure 1. Make this adjustment after completing the adjustment in 4-3 Flicker adjustment. 2. Use DAC-P - PSIG - G: in the Adjust menu to adjust so that the vertical lines spaced every 6 dots are as 43&white inconspicuous as possible.
  • Page 11 CP-X270W 12.Adjust Gamma, 43%, R: and B: so that the color 14.Adjust Gamma, 14%, R: and B: so that the color coordinates (x, y) at the center of the screen take coordinates (x, y) at the center of the screen take on the following values.
  • Page 12 CP-X270W Adjust menu Major adjustment lattice point position VIDEO C. UNIF. DAC-P GAMMA LEVEL Adjust Tone menu No. 1 Major adjustment lattice point No. Adjustment procedure 1 (when a color differential meter is used) 1. First adjust [MIN] tone [G:]. 7.
  • Page 13 CP-X270W 12.Then measure the color coordinates for adjust- 13.This completes [MAX] tone adjustments. ment point [No. 10] and adjust [No. 10] [R:] and [B:] 14.Now make similar adjustments for [MID] tone. so that the color coordinates are as follows. (Note that [G] color adjustment tolerance is 10 x = x1 0.010, y = y1 0.020 [lx].) Similarly measure adjustment points [No.
  • Page 14 CP-X270W No. 2 deviation range No. 10 deviation range No. 3 deviation range No. 11 deviation range No. 4 deviation range No. 12 deviation range No. 5 deviation range No. 13 deviation range 3 11 3 11 No. 6 deviation range No.

  • Page 15: Troubleshooting

    CP-X270W 5. Troubleshooting Check points at trouble shooting E302 E800 I303 PWB ass'y Drive E804 CHD12 CHD3 CHA14 TP85 CHB9 CHD8 CH1B CHC1 CH1R CH1G CHA15 CHB14 CHC13 TP86 E101 -- 12 --...
  • Page 16 CP-X270W Power can not be turned on voltage input Drive at standby y mode? : +16V : +19V Fuse Power unit (circuit) : +7V on Power unit (circuit) : +4.5V Disconnect TSW form Power unit Open (circuit). And check TSW short or open? Short Blinks...
  • Page 17 CP-X270W Lamp does not light What is the state of Light LAMP indicator during operation? Not light Not light Change the lamp. Does lamp light? Power unit (ballast) Power unit (circuit) Light Lamp Blinks What is the state of TEMP indicator? Not light Connect Does disconnect...
  • Page 18 CP-X270W Picture is not displayed only when the RGB signal is input Check at operating mode Are signal input at each pin of PWB ass'y Drive E101 on the PWB ass'y Drive? 35 36 Power unit PWB ass'y Signal (circuit) -- 15 --...
  • Page 19 CP-X270W Picture is not displayed only when the VIDEO Signal is input Check at operating mode E800 on the PWB ass'y Drive? Power unit (circuit) : +16V : +7V : +4.5V Are signal input at these pins of E101 on the PWB ass'y Drive? PWB ass'y Signal...
  • Page 20 CP-X270W No sound Check at operating mode PWB ass'y Signal Power unit (circuit) Speaker Can not control to RS232C Check at operating mode Pin No RS232C SEL0 the signals input at each pin of E101 on the PWB ass'y Drive? (CHD3) : TXD PWB ass'y Signal (CHC1) : RXD...

  • Page 21: Service Points

    CP-X270W 6. Service points Cautions when removing the PWB Ass'y Drive When removing the PWB Ass'y Drive, there is danger of damaging the connector connecting cables and the PWB Ass'y Signal. 1) Disconnect 5 cables and remove 3 screws. PWB Ass’y Drive Disconnect 5 cables Remove 3 screws 2) Lift up the rearward of the PWB Ass'y Drive to the front.

  • Page 22: Lamp Life

    CP-X270W Lamp HIGH VOLTAGE HIGH TEMPERATURE HIGH PRESSURE Contact your dealer before replacing the lamp. (Option lamp: DT00301) Before replacing the lamp, switch power OFF, remove the power cord from the power outlet, and wait approximately 45 minutes until the lamp has cooled. The lamp may explode if handled at high temperatures. WARNING Lamp For disposal of used lamp, treat according to the instruction of community...

  • Page 23: Replacing The Lamp

    CP-X270W Replacing the Lamp 1. Switch the projector OFF, remove the power cord from the power outlet, and wait at least 45 minutes for the unit to cool. 2. Prepare a new lamp. 3. Check that the projector has cooled sufficiently, and gently turn it upside down.

  • Page 24: Message Table

    CP-X270W Message table On-screen display The following messages are displayed on the screen. "CHANGE THE LAMP" "AFTER REPLACING LAMP, RESET Lamp has 1,700 hours on it and may need to be changed. THE LAMP TIMER" "CHANGE THE LAMP" "AFTER REPLACING LAMP, Lamp has 1,979 hours on it.

  • Page 25: Air Filter Maintenance

    Therefore, regarding these parts, you can either replace part , LCD / Lens Prism Ass'y, or send the whole unit LCD / Lens Prism Ass'y back to Hitachi, where we will replace the malfunctioning part, recondition the device and send it back to you.
  • Page 26 CP-X270W How to remove the POWER PWB BLOCK After remove these screws, pull up POWER PWB BLOCK in direction of arrow. M : Meter screw T : Tapping screw M3X8 T3X12 M3X6 M3X6 M3X6 T3X12 T3X12 M3X8 T3X12 Only this screw is loosened. M3X8 POWER PWB BLOCK M3X12...
  • Page 27 CP-X270W Setup of a Cooling Fan Speed When using this projector in the place where altitude is high, we recommend you to set a cooling fan’s speed as “HIGH”. It is because the cooling efficiency of a projector falls and the temperature inside a projector rises easily in such a place, since the density of air becomes low.

  • Page 28: Block Diagram

    SIGNAL PWB DRIVE PWB Flash ROM EEPROM SRAM CLAMP RGB A/D COLOR 1st_PLL UNIFORMITY S / H A/D , PLL VIDEO VIDEO AD9884A 0.7"LCD DECORDER PW164-10RK PANEL TIMING SAA7114 S / H Image_PROCESSOR GENERATOR SYNC SEP VOLUME AUDIO CONTROL 2nd_PLL AUDIO_AMP RECEIVER RS-232C...

  • Page 29: Connector Connection Diagram

    CP-X270W 8. Connector connection diagram 1: GND(AU) 70: +6.0V VIDEO IN 1:TEST 2: GND(AU) 69: +6.0V 2:COM 3: POWER6 68: MUTE 3:VVDD 4: MOUSE 67: +5V(HV) 4:PCG 5: GND(R/C) 66: CS6 5:VB 6: R/C(R) 65: REMOTE 6:HB Y/C IN 7: CLK-A 64: DATA-A 7:DWN 8: GND(ST)

  • Page 30: Wiring Diagram

    CP-X270W 9. Wiring diagram 1. Power Supply Circuit Board Block Wiring 1-1 Power supply circuit board wiring (at power supply circuit board subassembly assembling stage) (1)TSW connection (2)CNPOW connection CN103 (3)Check CN102, CN104 connection Route these items through the opening in the circuit board holder. CN101 CN104 CNPOW...
  • Page 31 2. Wiring at Bottom Case Assembling Stage Style the CNPOW and CNBAR Styling of CNBAR and CNPOW as shown to prevent capture at the time of optical unit installation. POWER UNIT ( CIRCUIT ) CNPOW POWER UNIT ( BALLAST ) CNBAR Ensure that the TSW cable is not...
  • Page 32 3. Wiring at Optical Unit Installation Stage After hooking the CNTH, (1)CNRM connection TAP10 adhere this lead to the circuit power unit case with TAP10. (2)TAP1 ,TAP3 attachment (3)CNTH connection Wind TAP3 tape around the CNTH (4)CNTH engagement to prevent its removal after inserting TAP3 (5)fan cable for B panel connection verification With the PAS1, clamp the...
  • Page 33 4. Wiring at Drive Circuit Board Installation Stage Route the EXHAUST FAN cable (1)fan cable for R panel connection Perform connection over the power supply block cover. steps (1) through (6) (2)fan cable for G panel connection (Observe this precaution to prevent To prevent the TSW cable from being caught with the drive circuit (3)CNTH connection...

  • Page 34: Basic Circuit Diagram

    DC370 LAMP R23 D13 R27 D25 HI C POWER UNIT ( BALLAST )
  • Page 35 CN101 CN101 CN101 RF101 D101 D103 T101 F101 CR101 R102 R115 L101 L102 IC101 R116 L104 D104 POWER UNIT ( CIRCUIT ) 1/2...
  • Page 36 L301 T201 D302 CN102 R205 R231 R230 R229 L304 D303 CN104 L-TEMP CN104 L-TEMP L201 D204 CN102 14.5V R218 CN102 FAN ON/OFF D203 R222 R314 CN103 CN103 CN103 C314 R318 SIGNAL L302 CN103 D301 CN102 R225 C315 R319 L303 CN102 4.3V CN102 4.3V...
  • Page 37 CP-X270W PWB ass'y SENSOR PWB ass'y SWITCH PWB ass'y REMOTE -- 34 --...
  • Page 38 CP-X270W CP-X270W PWB ass'y SIGNAL(1/2) - 35 -...
  • Page 39 CP-X270W CP-X270W E030 15P DSUB (FEMALE) (MALE) SERIAL MOUSE RS232C PWB ass'y SIGNAL(2/2) - 36 -...
  • Page 40 CP-X270W CP-X270W PWB ass'y DRIVE(1/8) - 37 -...
  • Page 41 CP-X270W CP-X270W PWB ass'y DRIVE(2/8) - 38 -...
  • Page 42 CP-X270W CP-X270W PWB ass'y DRIVE(3/8) - 39 -...
  • Page 43 CP-X270W CP-X270W PWB ass'y DRIVE(4/8) - 40 -...
  • Page 44 CP-X270W CP-X270W PWB ass'y DRIVE(5/8) - 41 -...
  • Page 45 CP-X270W CP-X270W PWB ass'y DRIVE(6/8) - 42 -...
  • Page 46 CP-X270W CP-X270W Lower Contact Lower Lower Contact Contact PWB ass'y DRIVE(7/8) - 43 -...
  • Page 47 CP-X270W CP-X270W PWB ass'y DRIVE(8/8) - 44 -...

  • Page 48: Disassembly Diagram

    CP-X270W 11. Disassembly diagram M : Meter screw T : Tapping screw T3X12 M3X8 T3X12 T3X12 T2X5 M3X8 M3X51 M3X12 M3X51 M3X6 M3X6 -- 45 --...
  • Page 49 CP-X270W M3X6 M3X6 M3X6 M : Meter screw T : Tapping screw M3X8 T3X12 M3X8 T3X12 T2X5 T3X12 T3X12 M3X6 M3X8 -- 46 --...

  • Page 50: Replacement Parts List

    THE UPDATED PARTS LIST FOR THIS MODEL IS AVAILABLE ON ESTA...

  • Page 51: Option Parts List

    CP-X270W 13. Option parts list Caution The cables (power cord/video cable, audio cable, RGB cable and other cables) must be used with the core set to the projector side. Use the cables which are included with the projector or specified. PARTS NO.

  • Page 52: Communication Data

    CP-X270W RS-232C communication Caution The specified RS-232C cable has the user's manual with RS-232C command table. (1) Turn off the projector and computer power supplies and connect with the RS-232C cable. (2) Turn on the computer power supply and, after the computer has started up, turn on the projector power supply. control jack RS-232C jack Projector...
  • Page 53 CP-X270W 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 54 CP-X270W Command data chart Command data Names Operation type Header Action Type Setting code BE EF 06 00 3B D3 01 00 00 30 00 00 Orange BE EF 06 00 AB D2 01 00 00 30 01 00 Green BE EF 06 00 5B D2...
  • Page 55 CP-X270W Command data chart Command data Names Operation type Header Action Type Setting code BE EF 06 00 7C D2 02 00 07 30 00 00 Magnify Increment BE EF 06 00 1A D2 04 00 07 30 00 00 Decrement BE EF 06 00...
  • Page 56 CP-X270W Command data chart Command data Names Operation type Header Action Type Setting code BE EF 06 00 2A D3 01 00 00 60 00 00 Power BE EF 06 00 BA D2 01 00 00 60 01 00 BE EF 06 00 19 D3 02 00...
  • Page 57 CP-X270W Command data chart Command data Names Operation type Header Action Type Setting code BE EF 06 00 0D 83 02 00 00 21 00 00 V.Position Increment BE EF 06 00 6B 83 04 00 00 21 00 00 Decrement BE EF 06 00...
  • Page 58 CP-X270W MEMO -- 55 --...
  • Page 59 Fax: +46 (0) 8 562 711 13 Tel: +39 02 38073415 Servizio Clienti Email: csgswe@hitachi-eu.com Fax: +39 02 48786381/2 Email: customerservice.italy@hitachi-eu.com HITACHI EUROPE S.A.S HITACHI EUROPE LTD (Norway) AB Lyon Office STRANDVEIEN 18 B.P. 45, 69671 BRON CEDEX 1366 Lysaker FRANCE...

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