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2001
Service
MITSUBISHI ELECTRIC
Manual
PROJECTION TELEVISION
VZ9 / VZ9+ CHASSIS
VZ9+
VZ9
MODELS
MODELS
VS-60719
VS-45609
VS-70709
VS-50609
-
VS-55609
VS-60609
CAUTION:
Before servicing this chassis, it is important that the service person read the "SAFETY PRECAUTIONS" and
"PRODUCT SAFETY NOTICE" contained in this manual.
SPECIFICATIONS
Cabinet : [Model] (H)x(W)x(D)
• Power Input : AC 120V, 60Hz
Dimensions : [VS-45609] 48"x38.4"x22.2"
Power : 200W
: [VS-50609] 50.4"x42.8"x23.8"
Consumpt
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MODELS: VS-45609 / VS-50609 / VS-55609 / VS-60609 / VS-60719 / VS-70709 CONTENTS INTRODUCTION ................................................................................................................................5 PRODUCT SAFETY NOTICE ............................................................................................................. 5 SAFETY PRECAUTIONS ................................................................................................................... 6 DISAS
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MODELS: VS-45609 / VS-50609 / VS-55609 / VS-60609 / VS-60719 / VS-70709 CHIP PARTS REPLACEMENT ......................................................................................................... 40 REPLACEMENT PARTS .................................................................................................................. 41 Parts Ordering .............................................................................................................................. 41 Critical and Wa
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MODELS: VS-45609 / VS-50609 / VS-55609 / VS-60609 / VS-60719 / VS-70709 INTRODUCTION This service manual provides service instructions for PTV Models VS-45609, VS-50609, VS-55609 and VS-60609 which use the VZ9 chassis, and PTV Model VS-60719 and VS-70709 which use the VZ9+ chassis. Service personnel should read this manual thoroughly before servicing these chassis. This service manual includes: 1. Assembly and disassembly instructions for the front and rear cabinet components. 2. Servicing of t
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MODELS: VS-45609 / VS-50609 / VS-55609 / VS-60609 / VS-60719 / VS-70709 SAFETY PRECAUTIONS NOTICE: Observe all cautions and safety related notes located inside the receiver cabinet and on the receiver chassis. WARNING: 1. Operation of this receiver outside the cabinet or with the cover removed presents a shock hazard from the receiver's power supplies. Work on the receiver should not be attempted by anyone who is not thoroughly familiar with the precautions necessary when working on high voltag
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MODELS: VS-45609 / VS-50609 / VS-55609 / VS-60609 / VS-60719 / VS-70709 CABINET DISASSEMBLY (FRONT VIEW) *Refer to PARTS LIST for Part Numbers 1.Front Cabinet Disassembly 1. Remove the Speaker Grille by pulling forward. 2. Remove the Front-Board by removing 4 screws "a". 3. Remove the Screen Assembly by removing screws "b". Disconnect all cable harnesses between the Screen Assembly and the PCB-Signal. 4. Lift the Screen Assembly and pull up and away from the cabinet as shown. Page 7
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MODELS: VS-45609 / VS-50609 / VS-55609 / VS-60609 / VS-60719 / VS-70709 CABINET DISASSEMBLY (REAR VIEW) 2. Rear Cabinet Disassembly 1. Remove the Back Board by removing 8 screws "a" and 4 screws “b”. 2. Remove the Rear Board-1 by removing 4 screws "c". 3. Remove 4 screws "e" (two not shown) and 8 screws "d" securing the Light Box Assembly and the Board Shelves. 4. Remove the Board Shelves by lifting up and out. 5. Be certain that all cables and connectors between the Light Box Assembly and ext
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MODELS: VS-45609 / VS-50609 / VS-55609 / VS-60609 / VS-60719 / VS-70709 SERVICING THE LENTICULAR SCREEN AND FRESNEL LENS 1. Removal of the Lenticular Screen and Fresnel Lens CAUTION: Wear gloves when handling the Lenticular Screen and the Fresnel Lens. This prevents cuts and finger prints. Do not place the Fresnel Lens in the sun. This may cause fire and heat related injuries. 1. Remove the screen assembly as shown in the Cabinet Disassembly procedure. [Figure 1-1] 2. Remove the Screen Holder b
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MODELS: VS-45609 / VS-50609 / VS-55609 / VS-60609 / VS-60719 / VS-70709 2. Installation of the Lenticular Screen and Fresnel Lens Note: Store the Lenticular Screen and Fresnel Lens in a cool dry place. High humidity may deform the Lenticular Screen and Fresnel Lens. 1. Apply double coated tape (Part # LENS-TAPE) along the top front edge of the Fresnel Lens as shown in figure 3-2. Refer to Table A for proper tape length. 2. Place the Fresnel Lens on top of the Lenticular Screen and apply pressur
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MODELS: VS-45609 / VS-50609 / VS-55609 / VS-60609 / VS-60719 / VS-70709 CABINET SEPARATION PROCEDURE (VS-70709) Model VS-70709 cabinets are assembled in two pieces. These two pieces may be separated to allow easier delivery and setup. Note: The Guide Pins under the cabinet top may break if mishandled. Keep the cabinet top straight when remov- ing and installing. DO NOT tilt the cabinet top while resting on the guide pins. 1c. VS-70709 Cabinet Separation Precedure 1. Remove the Screen Assembly
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MODELS: VS-45609 / VS-50609 / VS-55609 / VS-60609 / VS-60719 / VS-70709 SERVICING THE DIAMONDSHIELD™ 1. DiamondShield™ Removal Procedure TM The location of the DiamondShield molding clips may vary between models, top and bottom, or sides. Use the appropriate disassembly procedure given below. Note: Wear gloves when handling the DiamondShield™ to prevent finger prints. Side Molding Clips Top & Bottom Molding Clips 1. Gently insert a small screwdriver between the 1. Gently insert a small screwdri
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MODELS: VS-45609 / VS-50609 / VS-55609 / VS-60609 / VS-60719 / VS-70709 SERVICING PCBs Chassis Removal and PCB Locations Chassis Removal 1) Remove 3 screws “a” from the Main Chassis. 2) Raise the two chassis locks on the inner sides of the Lightbox Assembly and slide the chassis towards the rear. Major Parts Locations Page 13
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MODELS: VS-45609 / VS-50609 / VS-55609 / VS-60609 / VS-60719 / VS-70709 CRT REPLACEMENT 1. Removal of the CRT Caution! High voltage should be completely discharged prior to CRT removal. Since The CRTs receive high voltage from the CR Block, discharge by shorting the open end of the respective high voltage cable to chassis ground. Note: Refer to figures 1-1 through 2-2 when performing steps 1 through 4. 1. Remove the Speaker Grille, Front Board, and Screen Assy. 2. Remove the Back Board. 3. Rem
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MODELS: VS-45609 / VS-50609 / VS-55609 / VS-60609 / VS-60719 / VS-70709 2. Installation of the CRT Note: The replacement CRT is supplied as an assembly comprised of the CRT and the Inner Lens with the space between them filled with ethylene glycol. Care should be taken during handling and installation to prevent shock from disrupting the seal or alignment between the CRT and Inner Lens. [Figure 5-3] Figure 5-3 Note: The CRT fixing screws should not be loosened nor should they be removed. [Figu
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MODELS: VS-45609 / VS-50609 / VS-55609 / VS-60609 / VS-60719 / VS-70709 2. Install the Deflection Yoke on the CRT neck. [Figure 5-7] 3. Install the Lens that was removed in steps 5 and 6 of Removal Of The CRT. [ Figures 5-1 and 5-2 ] a) Position the Lens so that the Label faces the direction shown in Figure 5-8. b) Install the mounting screws. [Figure 5-1] 4. Install the PCB-CRT. 5. Insert the Optical Unit into the Light Box Assembly. 6. Insert the Anode Lead Wire into the Flyback Tran
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MODELS: VS-45609 / VS-50609 / VS-55609 / VS-60609 / VS-60719 / VS-70709 ELECTRICAL ADJUSTMENTS Note: Perform only the adjustments required. Do not attempt an alignment if proper equipment is not available. 1. Test Equipment Oscilloscope (Unless otherwise specified, use 10:1 probes) Signal Generator Frequency Counter Direct Current Voltmeter Direct Current Power Supply Multiplex Audio Signal Generator Direct Current Ampere Meter 2. Test Signal A. Monoscope Signal Note: If you do not h
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MODELS: VS-45609 / VS-50609 / VS-55609 / VS-60609 / VS-60719 / VS-70709 3. Initial Setup 1. Option Menu Setup Follow the steps below for the initial set-up: 1. Select the "MENU" display by pressing the "MENU" button once. 2. Press the number buttons "0", "1", "7", "0" in sequence to select the "OPTION MENU" display. 3. Press the "ADJUST" button to select "INITIAL." 4. Press "ENTER." NOTE: At this time channel 3 is automatically selected. OPTION MENU (MENU-0-1-7-0) INITIAL POWER RESTORE :OFF DIRE
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MODELS: VS-45609 / VS-50609 / VS-55609 / VS-60609 / VS-60719 / VS-70709 Items in the table below are set to following after Initalization. AV MEMORY AV MEMORY All Inputs TINT 31 COLOR 31 CONTRAST 63 BRIGHTNESS 31 SHARPNESS 31 COLOR TEMP HIGH BASS 31 TREBLE 31 BALANCE 31 SURROUND OFF LEVEL SOUND OFF 4. LED Indicator Diagnostics The “Power ON LED” provides an indication of the sets operation, and the possible cause of a malfunction. 1. Initial Control Circuitry Check Immediately after the TV is co
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MODELS: VS-45609 / VS-50609 / VS-55609 / VS-60609 / VS-60719 / VS-70709 5. Circuit Adjustment Mode Except for the following, all adjustment items must be performed using the remote hand unit. Lens Focus Electrostatic Focus A. Activating the Circuit Adjustment Mode 1. Press the "MENU" button on a remote hand unit. 2. Press the number buttons "0", "1", "5", "7" in sequence. The screen will change to the Adjustment Mode. Note: Repeat steps 1 and 2 if the circuit adjustment mode does not appear
