Hitachi CPS370W C4S3 Service Manual
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Hitachi CPS370W C4S3 Service Manual

Hitachi CPS370W C4S3 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 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 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 (main), 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 module assembly, do not hold
the FPC of the LCD module assembly.
6. Use the cables which are included with the projector or specified.
1. Features --------------------------------------------------- 2
2. Specifications--------------------------------------------- 2
3. Names of each part ------------------------------------- 3
4. Adjustment ------------------------------------------------ 5
5. Troubleshooting ---------------------------------------- 12
6. Service points ------------------------------------------ 17
7. Block diagram ------------------------------------------ 22
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT.
Multimedia LCD Projector
February 2002 Digital Media Systems Division
Caution
Service Warning
Contents
8. Connector connection diagram -------------------- 23
9. Wiring diagram ----------------------------------------- 24
10.Basic circuit diagram---------------------------------- 30
11.Disassembly diagram--------------------------------- 65
12.Replacement parts list ------------------------------- 67
13.RS-232C communication ---------------------------- 68
SM 0521
CPS370W
(C4S3)

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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 LCD Projector. Be sure to read cautionary items described in the manual to maintain safety before servicing.

  • Page 2: Features

    CP-S370W 1. Features High brightness, High resolution Compact size, light weight for portability RS-232C Communication Complies with VESA DDC1/2B specifications Auto-adjustment function 2. Specifications Drive system TFT active matrix Liquid crystal Panel size 0.9 inches panel 800 (H) × 600 (V) Number of pixels 200W UHB Lamp...

  • Page 3: Names Of Each Part

    CP-S370W 3. Names of each part Parts names Speaker Zoom Knob Focus Ring Handle Hook Remote Control Sensor Power Switch Lens AC Inlet (to the Power Cord) Lens Cap Foot Adjuster Ventilation Openings (Intake) FRONT/LEFT VIEW OF THE PROJECTOR Control Panel INPUT Button STANDBY/ON Button KEYSTONE Button...

  • Page 4: Remote Control Transmitter

    CP-S370W Remote control transmitter VIDEO Button VIDEO STANDBY/ON STANDBY/ON Button RGB Button KEYSTONE Button MENU SELECT Button KEYSTONE Button Used to click the left mouse button. MENU Used to operate SELECT the mouse shift POSITION Button function . RESET Button MENU RESET POSITION...

  • Page 5: Adjustment

    CP-S370W 4. Adjustment 4-1 Before adjusting 1. Before starting adjustment, warm up the projector 4. Perform all adjustments from the Adjustment menu. for about 10 minutes.(Blank white) Perform the following operations to display the 2. Set Zoom Wide to Max. And project an image a Adjustment menu.

  • Page 6: White Balance Adjustment

    CP-S370W 4-4 NRSH 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 - NRSH - R: in the Adjustment menu to adjust so that the vertical lines spaced every 6 or 12 dots are as inconspicuous as possible.
  • Page 7 CP-S370W 11.Adjust Gamma, 0%, G: and R: and B: so that the 16.Adjust Gamma, 43%, R: and B: so that the color following values. coordinates (x, y) at the center of the screen take [0%][R:] = -96 - [SHIFT][R:] on the following values. [0%][G:] = -96 - [SHIFT][G:] x = 0.280 ±...

  • Page 8: Color Uniformity Adjustment

    CP-S370W 4-6 Color uniformity adjustment Preparations 1. Perform these adjustments after the white balance 6. To temporarily turn correction off, place the cursor adjustment described in Section 4-5. on “ON” in the Adjust Tone menu and press the 2. Make a color uniformity adjustment for the ] key.
  • Page 9 CP-S370W Adjustment procedure 1 (when a color differential meter is used) 9. Similarly, measure adjustment points [No.3] to 1. First adjust [MID-L] tone [G:]. 2. Select adjustment point [No.2][G:]. [No.17] and adjust their color coordinates starting When the background is not [G] monochrome, in order from the small number points.
  • Page 10 CP-S370W Adjustment procedure 2 (visual inspection) 1. First adjust [MIN] tone [G:]. 6. View measurement points [No.2], [No.3], [No.10] 2. Select [No.2] [G:]. and [No.11]. Adjust the [R] and [B] of each If the background is [G] monochrome, press the measurement point so that they have the same color as measurement point [No.1].
  • Page 11 CP-S370W 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 12: Troubleshooting

    CP-S370W 5. Troubleshooting Check points at trouble shooting E805 ESPR E302 E801 I256 L818 E808 E800 I812 ESPL E806 S201 I306 P701 P501 E804 S302 S303 E803 D302 E802 P601 I841 D301 D303 E809 S305 S304 I102 CHV33 S307 CHV34 CHV35 IV22 S306...
  • Page 13 CP-S370W Power can not be turned on Disconnect Are voltage TSW from Power unit input on the PWB Open (circuit). And check assembly Drive at TSW short or standby mode? open? I812 : +14V IV22 : +17V Short I102 : +6V I841 : +4.3V Fuse...
  • Page 14 CP-S370W Lamp does not light What is the state of Light Light Change the lamp. Lamp LAMP indicator D302 Does lamp light? during operation? Not light Not light Is the voltage at collector of Q801 on the PWB assembly PWB assembly Drive Drive fixed to "L"...
  • Page 15 CP-S370W Picture is not displayed when the RGB signal is input Check at operating mode Are signal Change the input at each pin on the IS01 on the PWB assembly Signal is it PWB assembly Drive? repaired? IC (IS01) CH106 : R signal EL4332CS CH102 : G signal CH104 : B signal...
  • Page 16 CP-S370W No sound Check at operating mode Are signal input at each pin on the PWB assembly Drive? PWB assembly Signal CHV25 : Audio (L) CHV33 : Audio (R) PWB assembly Drive Speaker Can not control to RS-232C Check at operating mode Pin No RS-232C SEL0...

  • Page 17: Service Points

    CP-S370W 6. Service points Cautions when removing the Upper case assembly When you remove the Upper case assembly, avoid to damage wires between speakers on the Upper case assembly and PWB assembly Drive on the Bottom case assembly. Wire from Speaker Cautions when removing the PWB assembly Drive When removing the PWB assembly Drive, there is danger of damaging the connector connecting cables and the PWB assembly Signal.

  • Page 18: Loading The Battery

    Therefore, regarding these parts, you can either replace part, LCD / Lens Prism assembly, or send the whole unit LCD / Lens Prism assembly back to HITACHI, where we will replace the malfunctioning part, recondition the device and send it back to you. In that case please contact our distributor.

  • Page 19: Air Filter

    CP-S370W Air Filter Cleaning the Air filter The air filter should be cleaned as described below at intervals of approximately 300 hours. 1. Switch the projector power supply OFF, and remove the power cord from the power outlet. 2. Clean the air filter with a vacuum cleaner. Replacing the Air filter Replace the air filter if contamination cannot be removed, or if it is damaged.

  • Page 20: Replacing The Lamp

    CP-S370W 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 21: Message Table

    CP-S370W 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 22 SIGNAL PWB DRIVE PWB EEPROM 1M SRAM Flash ROM RGB 1 A/D, PLL SIGNAL EXT.I/O CXA3506R SELECTOR 1st_PLL RGB 2 CLAMP COLOR UNIFORMITY SYNC Component & SEPARATOR Video CXA2151Q TIMING PW164-10RK VIDEO 0.9 type LCD GENERATOR S-Video Image_PROCESSOR LEVEL DECODER SVGA PANEL Video SHIFTER...

  • Page 23: Connector Connection Diagram

    CP-S370W 8. Connector connection diagram E950 S-VIDEO ESM2 EV01 E302 PWB assembly DRIVE assembly SENSOR C.VIDEO MOUSE 19 REMOTE E806 L.IN 1 PWB 2 REMOTE 2 assembly S.CIN P501 3 REMC P601 S.YIN P701 VDDY CVBSIN FAN1S DIAY E801 2 LCD-B (PANEL-B) LCCOM...
  • Page 24 Check the connection between CNPWR the CN102 and the CN104. (Because it is impossible to check it afterward) Pass this through a notch of the PWB holder. CNBAR Let the CNPOW and TSW cables cross each other (so that the TSW will not approach the primary side power circuit).
  • Page 25 Check that the black cover of a lamp lead is securely White cover inserted into the connector. on lamp lead If even a trivial portion of the white cover is visible inside in a state where the black cover is not inserted into the connector as shown in the diagram on the right, shift the black cover appropriately and Shift the black...
  • Page 26 CNPOW Do not let the TSW cable sag down (so that it will not approach the primary power side). CNTH Pass through the ballast cover guide after clamping the TSW cable as CNBAR shown in the diagram. Lamp lead PWB assembly INP. RC. Keep individual cables away from positions to mount optical units as shown in the diagram so that the cables will not be caught in when optical units are mounted.
  • Page 27 Clamp #6260, #6261, CNTH, CNBAR and CNPOW cables using PAS1. Provide extra length on the #6260 cable by making a loop, etc., at the clamp. Difference As regards the CNTH cable, provide some extra in level CNPOW length if there is any as mentioned above (in order to prevent the sagged cable caused by extra length from touching the front bezel and lens).
  • Page 28 Procedures Before mounting the PWB assembly Drive, connect the CNBAR and the CNPOW to a connector on the back of the PWB in a state where you hold the PWB assembly Drive with your hands. Connect the other cables in a state where the PWB assembly Drive is mounted. Thermistor cable Connect this to the PWB assembly Drive E302.
  • Page 29 * Installing the A83 cable on the upper case TAP1 and affixing of the TAP1 are to be performed in accordance with an assembly drawing. Upper case When installing the front bezel, exercise utmost caution not to Pass the A83 cable through the left side of a get the cable caught in.

  • Page 30: Basic Circuit Diagram

    CP-S370W 10. Basic circuit diagram Parts with hatching are not mounted. PWB assembly SENSOR (C4S3) PWB assembly REMOTE CONTROL (C4S3) PWB assembly LIMIT SWITCH (C4S3)
  • Page 31 POWER UNIT (BALLAST) 1 (C4S3)
  • Page 32 POWER UNIT (BALLAST) 2 (C4S3)
  • Page 33 CP-S370W POWER UNIT (CIRCUIT) 1 (C4S3)
  • Page 34 CP-S370W POWER UNIT (CIRCUIT) 2 (C4S3)
  • Page 35 CP-S370W (female) (female) (female) PWB assembly SIGNAL 1 (C4S3)
  • Page 36 CP-S370W PWB assembly SIGNAL 2 (C4S3)
  • Page 37 CP-S370W (male) serial mouse RS232C PWB assemly SIGNAL 3 (C4S3)
  • Page 38 CP-S370W PWB assembly DRIVE 1 (C4S3)
  • Page 39 CP-S370W PWB assembly DRIVE 2 (C4S3)
  • Page 40 CP-S370W PWB assembly DRIVE 3 (C4S3)
  • Page 41 CP-S370W PWB assembly DRIVE 4 (C4S3)
  • Page 42 CP-S370W PWB assembly DRIVE 5 (C4S3)
  • Page 43 CP-S370W PWB assembly DRIVE 6 (C4S3)
  • Page 44 CP-S370W PWB assembly DRIVE 7 (C4S3)
  • Page 45 CP-S370W PWB assembly DRIVE 8 (C4S3)
  • Page 46 CP-S370W PWB assembly DRIVE 9 (C4S3)
  • Page 47 CP-S370W PWB assembly DRIVE 10 (C4S3)
  • Page 48 CP-S370W MEMO MEMO...

  • Page 49: Disassembly Diagram

    CP-S370W 11. Disassembly diagram M : Meter screw T : Tapping screw T3X12 T3X12 M3X8 M3X65 M3X65 M3X6 M3X6...
  • Page 50 CP-S370W M : Meter screw M3X8 T : Tapping screw M3X25 M3X10 T3X12 T3X12 T3X12 T3X12 T3X12 M3X8 M3X8 T3X12 T3X10 M3X8 M3X8 M3X8 T2X5...

  • Page 51: Replacement Parts List

    CP-S370W 12. 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 52: Rs-232C Communication

    CP-S370W 13. RS-232C communication (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. RS-232C jack Projector Computer D-sub 9-pin...
  • Page 53 CP-S370W 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: Command Data Chart

    CP-S370W 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-S370W 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-S370W Command data chart Command data Names Operation type Header Action Type Setting code Normal BE EF 06 00 46 D3 01 00 02 20 00 00 Mute Mute BE EF 06 00 D6 D2 01 00 02 20 01 00 BE EF 06 00 75 D3...
  • Page 57 CP-S370W Command data chart Command data Names Operation type Header Action Type Setting code BE EF 06 00 F1 72 02 00 01 22 00 00 Sharpness Increment BE EF 06 00 97 72 04 00 01 22 00 00 Decrement BE EF 06 00...
  • Page 58 CP-S370W Command data chart Command data Names Operation type Header Action Type Setting code BE EF 06 00 CB D0 01 00 08 30 01 00 Sync on G BE EF 06 00 5B D1 01 00 08 30 00 00 BE EF 06 00 68 D1...
  • Page 59 CP-S370W MEMO...
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