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Descr:Mitsubishi VS-50805, WT-60805, WS-55905, WS-65905, WS-73905, WS-55805, WT-46805 (Chassis V16 N W) (Training Manual + Schematic)
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1-Service_Procedures.pdfChapter 1 Service Procedures Servicing models in the V16 chassis family is similar to previous Mitsubishi projection televisions. This chapter will familarize the service technician with: Cabinet Disassembly Procedures Lightbox Removal Procedures PCB Functions PCB and Major Parts Locations For actual service, please refer to the Service Manual for more complete information, including the Safety Precautions and Product Safety Notice. Page 1-1 Page 1-2 CABINET DISASSEMBLY (FRONT VIEW) VS-50805 / VS-60805 / WS-55805 Figure 1-1 1. Front Cabinet Disassembly 1. 2. 3. 4. Remove the Speaker Grille by pulling forward. Remove the Board Front by removing 4 screws (a). Remove the 3 screws (b) holding the Screen Assembly. Lift the Screen Assembly up and away from the cabinet. Page 1-3 CABINET DISASSEMBLY (FRONT VIEW) WS-55905 / WS-65905 / WS-73905 Figure 1-2 1a. Front Cabinet Disassembly 1. 2. 3. 4. 5. Remove the Cover Front and the two Speaker Grilles by pulling forward. Remove 2 screw
2-Alignment_Procedures.pdfChapter 2 Alignment Procedures Performing electrical alignments on the V16 chassis is also similar to previous Mitsubishi projection televisions. The major difference between aligning a standard NTSC model and the HDTV capable V16 is that it is necessary to perform many alignments in each major video format, the Standard (NTSC or SD) mode, the High Definition (HD) mode and the DVD 480p (480p) mode. (Note: Adjustments in the 480p mode are limited to setting fixed data values.) This chapter will familiarize the service technician with: Accessing the Option Menu and performing an Initial Setup. Accessing the Circuit Adjustment Mode, selecting Adjustment Functions and Adjustment Items, changing data values and saving new data values. Accessing the Convergence Adjustment Mode, selecting Adjustment Functions and Adjustment Items, changing data values and saving new data values. Raster Geometry and Convergence alignment procedures. When performing alignments, please refer to the Service
3-Power_Supplies.pdfChapter 3 Power Supplies Power supply circuitry in the V16 chassis is conventional for high performance projection televisions. Topics covered in this chapter include: Standby Power Supplies Switched Power Supplies Block diagrams are provided to assist in servicing these circuits. Page 3-1 Page 3-2 The Standby Power Supply not only supplies circuits that require power while the TV is not in use, some of the sources are also used as switched supplies. This requires a slightly more complex circuit. Standby Power Supply Regulation Figure 3-1 shows a simplified diagram of the Standby Regulator circuitry. The basic operation of the Regulator is the same as that in previous models. The key points of the Regulators operation are as follows: Start-up Voltage 16.5V from R917 provides start-up voltage for the oscillator. Run Voltage Voltage produced by the secondary at D914 sustains the oscillators DC supply as the IC starts to draw current. Standby Power Supplies Over Voltage Protecti
4-Control_Circuitry.pdfChapter 4 Control Circuit The Control circuitry in the V16 chassis is necessarily complex. In addition to supporting the additional features included, communications for the optional Mitsubishi HD-1080 ATV Receiver are provided. This chapter will cover the following subjects: µPC Requirements I2C Bus Lines Control Interface Circuitry I/O Expander Parallel Inputs and Outputs AC Off Circuit Troubleshooting Tips Block diagrams are provided to assist in servicing these circuits. Page 4-1 Page 4-2 From the Simplified Block Diagram in Figure 4-1, it is apparent that the Control Circuitry in the V16N and V16W chassis is similar to that in the VZ6 and V15 chassis. There are three I2C lines in the V16 chassis, used to: 1) Read and Write data to and from the E2PROM memory. 2) Control the Video, Sound and Deflection circuitry. 3) Control the Convergence circuitry Control Circuit Overview The Control Interface Circuitry: 1) Provides a communication link between the Main µPC and the Su
5-Signal_Processing.pdfChapter 5 Video-Color Signal Processing As discussed in the introduction, there are two types of V16 chassis, the V16N and the V16W. The most apparent difference between the two chassis is the aspect ratio. V16N models have a 4:3 screen, and V16W models use a 16:9 screen. Less obvious are the differences in PIP/POP and Format features. These differences are more evident when the VideoColor signal path is analyzed. In addition, both V16 chassis are capable of producing High Definition, 1080i as well as Standard Definition, 480p and 480i pictures when used with an Advanced TV Receiver. They will also produce pictures from DVD, 480p and 480i signals. These details make the Video-Color Signal Processing circuitry far more complex than a standard NTSC receiver. This chapter will cover: Video/Color Signal Path Signal Processing by PCB As in previous chapters, block diagrams are provided to help streamline circuit analysis and troubleshooting techniques. Page 5-1 Page 5-2 Figure 5-1 illu
6-Sync-Deflection-HV.pdfChapter 6 Sync, Deflection and High Voltage Like the Video-Color Signal Processing circuitry, the Sync, Deflection and High voltage circuitry is also more complex than that used in a standard NTSC receiver. This chapter will cover: Sync Signal Path Deflection Signal Path High Voltage Generation Block diagrams are included for circuit analysis and future troubleshooting needs. Page 6-1 Page 6-2 Basic Block Diagram Figure 6-1 shows a basic block diagram of the Sync, Deflection and High Voltage circuits. The Vertical and Horizontal Sync Signals can originate from three different sources. NTSC Y/V -- When an NTSC signal source is selected, Vertical and Horizontal Sync pulses are selected and separated from the Y Signal in the NTSC Decoder. DVD Component-- If the component inputs are used, Vertical and Horizontal Sync is selected and separated from the Y Signal in the Multi-Component Processor. DTV -- Sync from an ATV receiver can be input either separately, as Sync on Green, or a
7-Convergence.pdfChapter 7 Convergence Convergence circuitry in the V16 Chassis is similar to the NTSC VZ5 and VZ7 digital convergence designs and identical to that used in the first generation HDTV capable VZ6 and V15 Chassis. This chapter will cover: Input Buffer Circuitry Convergence Output Circuitry PCB-CONVERGENCE Signal Path Convergence Control Circuitry Edge Convergence Enhancement Convergence Shutdown Control Page 7-1 Page 7-2 A Basic Block Diagram of the Convergence Circuitry in the V16 chassis is shown above. Horizontal and vertical pulses from the Deflection circuitry are shaped and timed by the Input Buffer circuitry. The outputs of the Buffer circuit are applied to the Convergence Generator. The Convergence Generator generates red, green and blue horizontal and vertical convergence correction signals. The correction signals from the Generator are in a serial digital format and are applied to Digital to Analog (D/A) Converter circuitry. The signals are converted from digital to ana
8-Audio.pdfChapter 8 Audio Audio circuitry in the V16 Chassis is conventional in design. This chapter will cover: Audio Select, Control and Output Page 8-1 Page 8-2 The Audio circuitry in the V16 Chassis is similar to previous Mitsubishi Televisions. Figure 8-1 is a block diagram of the signal circuit. The only major differences that should be noted are: ATV Input Jacks -- Accepts analog audio in from an ATV Receiver. Sub Output Jacks -- Allows the PIP audio source to be output to an A/V Receiver (V16W only). Key components in the audio circuit are: IC7600, A/V Switch -- Selects the Audio Source. IC300, Audio Control -- Controls the Audio Volume, Bass, Treble, Balance, etc. IC301, Fixed/Variable Switch -- Switches the Main Audio Output to the Fixed or Variable source. IC3001, Audio Amp -- Audio Amplifier for the internal speakers. Troubleshooting the audio circuit can be greatly simplified by testing the various inputs and outputs to narrow down the problem by process of elimination.
Adjustment_Testpoint_Locations.pdfMODELS: VS-50805 / VS-60805 / WT-46805 / WS-55805 / WS-55905 / WS-65905 / WS-73905 Adjustments Test Point Locations Page 42
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Audio_Adjustments.pdfMODELS: VS-50805 / VS-60805 / WT-46805 / WS-55805 / WS-55905 / WS-65905 / WS-73905 [Audio Circuit] 1. MCS Input Level Measuring Instrument Test Point Ext. Trigger Measuring Range Input Signal Input Terminal Oscilloscope TP14A, TP15A, TP14B, TP15B -----50mV/Div RF Monaural 400 Hz modulation RF Input Purpose: Check the input signal level to the MCS circuit Symptom: Distorted sound during a stereo broadcast. 1. Supply an RF monaural signal to the Ant A input, 400 Hz at 100% modulation (25 kHz deviation). 2. Connect the oscilloscope to TP14A (Main Tuner Left Audio). 3. Enter the Adjustment Mode and select the Audio Function. 4. Verify that the Audio Function items are set to the data values given the table below. 5. Confirm the audio level at TP14A is 1.1 Vp-p ±0.1V. 6. Connect the oscilloscope to TP15A (Main Tuner Right Audio). 7. Confirm that the audio level at TP15A is 1.1 Vp-p ±0.1V. 8. Connect the oscilloscope to TP14B (Sub Tuner Left Audio). 9. Confirm that the audio level at TP14
Audio_Signal_Path.pdfMODELS: VS-50805 / VS-60805 / WT-46805 / WS-55805 / WS-55905 / WS-65903 / WS-73905 AUDIO CIRCUIT Page 82
Cabinet_Disassembly_VS-50805-60805-WS-55805.pdfMODELS: VS-50805 / VS-60805 / WT-46805 / WS-55805 / WS-55905 / WS-65905 / WS-73905 CABINET DISASSEMBLY (FRONT VIEW) VS-50805 / VS-60805 / WS-55805 *Refer to the Parts List for Part Numbers 1. Front Cabinet Disassembly 1. 2. 3. 4. Remove the Speaker Grille by pulling forward. Remove the Board Front by removing 4 screws (a). Remove the 3 screws (b) holding the Screen Assembly. Lift the Screen Assembly up and away from the cabinet. Page 5 MODELS: VS-50805 / VS-60805 / WT-46805 / WS-55805 / WS-55905 / WS-65905 / WS-73905 CABINET DISASSEMBLY (REAR VIEW) VS-50805 / VS-60805 / WS-55805 / WS-55905 / WS-65905 / WS-73905 *Refer to the Parts List for Part Numbers 2. Rear Cabinet Disassembly 1. 2. 3. 4. Remove 12 screws (a) holding the Back Board. Remove the 4 screws (c) holding each Board Shelf. Remove the 4 screws (b) securing the Light Box Assembly. Slide the Light Box out the rear of the Cabinet. Page 8
Cabinet_Disassembly_WS-55905-65905-73905.pdfMODELS: VS-50805 / VS-60805 / WT-46805 / WS-55805 / WS-55905 / WS-65905 / WS-73905 CABINET DISASSEMBLY (FRONT VIEW) WS-55905 / WS-65905 / WS-73905 *Refer to the Parts List for Part Numbers 1a. Front Cabinet Disassembly 1. 2. 3. 4. 5. Remove the Cover Front and the two Speaker Grilles by pulling forward. Remove 2 screws (a) to remove the Control Panel. Remove the Board Front by removing 4 screws (b). Remove the 4 screws (c) holding the Screen Assembly. Lift the Screen Assembly up and away from the cabinet. Page 6 MODELS: VS-50805 / VS-60805 / WT-46805 / WS-55805 / WS-55905 / WS-65905 / WS-73905 CABINET DISASSEMBLY (REAR VIEW) VS-50805 / VS-60805 / WS-55805 / WS-55905 / WS-65905 / WS-73905 *Refer to the Parts List for Part Numbers 2. Rear Cabinet Disassembly 1. 2. 3. 4. Remove 12 screws (a) holding the Back Board. Remove the 4 screws (c) holding each Board Shelf. Remove the 4 screws (b) securing the Light Box Assembly. Slide the Light Box out the rear of the Cabinet. Page 8
Cabinet_Disassembly_WT-46805.pdfMODELS: VS-50805 / VS-60805 / WT-46805 / WS-55805 / WS-55905 / WS-65905 / WS-73905 CABINET DISASSEMBLY (FRONT VIEW) WT-46805 *Refer to the Parts List for Part Numbers 1b. Front Cabinet Disassembly 1. 2. 3. 4. 5. Remove the Speaker Grille by pulling forward. Remove 2 screws (b) to remove the Control Panel. Remove the Board Front by removing 4 screws (a). Remove the 4 screws (c) holding the Screen Assembly. Lift the Screen Assembly up and away from the cabinet. Page 7 MODELS: VS-50805 / VS-60805 / WT-46805 / WS-55805 / WS-55905 / WS-65905 / WS-73905 CABINET DISASSEMBLY (REAR VIEW) WT-46805 *Refer to the Parts List for Part Numbers 2a. Rear Cabinet Disassembly 1. 2. 3. 3. 4. Remove 15 screws (a) holding the Back Board. Remove the 13 screws (b) holding the Back Cover. Remove the 3 screws (d) securing each Board Shelf. Remove the 4 screws (c) securing the Light Box Assembly. Slide the Light Box out the rear of the Cabinet. Page 9
Chip_Parts_Replacement.pdfMODELS: VS-50805 / VS-60805 / WT-46805 / WS-55805 / WS-55905 / WS-65905 / WS-73905 REPLACEMENT PARTS Parts Ordering To expedite delivery of replacement parts orders, specify the following: 1. Model Number/Serial Number 2. Part Number and description 3. Quantity Note: Unless complete information is supplied, delay in processing of orders will result. Critical and Warranty Parts Designation Critical Electrical Components are indicated by Bold Type in the Parts List, and in the schematic diagrams by shading. Warranty Return Parts are indicated in the Parts List with an (*). Parts Tolerance Codes Refer to the following chart for tolerance characteristics of electrical components. MARK Tolerance % B ± 0.1 C ± 0.25 D ± 0.5 F ±1 G ±2 J ±5 K ± 10 MARK Tolerance % M ± 20 N ± 30 V ± 10 X + 40 -20 Z + 80 -20 P + 100 -0 Q + 30 -10 MARK Tolerance (pF) M ± 0.1 N ± 0.25 V ± 0.5 X ±1 Z ±2 PAGE 59
Circuit_Adjustment_Mode.pdfMODELS: VS-50805 / VS-60805 / WT-46805 / WS-55805 / WS-55905 / WS-65905 / WS-73905 4. Circuit Adjustment Mode Most of the adjustments can only be performed using the remote hand unit. Many of the adjustments must be performed in both the NTSC and HD modes. Video/Color adjustments must be performed in the NTSC and HD modes, and data must be preset in the 480P (DVD) mode. A. Activating the Circuit Adjustment Mode The current signal source determines if the activated Adjustment Mode is NTSC or HD. 1. Select the signal source (NTSC or HD). 2. Press the "MENU" button on a remote hand unit. 3. Press the number buttons "1", "2", "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 on screen Page 21 MODELS: VS-50805 / VS-60805 / WT-46805 / WS-55805 / WS-55905 / WS-65905 / WS-73905 B. Selection of adjustment Functions and Adjustment Items To select an adjustment item in the circuit adjustment mode, f
Convergence_Adjustments.pdfMODELS: VS-50805 / VS-60805 / WT-46805 / WS-55805 / WS-55905 / WS-65905 / WS-73905 [Convergence Circuit] 23. Coarse Convergence Measuring Instrument Test Point Ext. Trigger Measuring Range Input Signal Input Terminal ------------------NTSC -- None HD -- HD sync Video & HD Inputs Purpose: Symptom: To converge red and blue on green at the edges of the screen. Color edging at the top, bottom and sides of the screen. SD mode 1. Select an External Input with no signal. 2. Activate the Convergence Mode, Coarse Red. 3. Adjust the Items shown below to converge the red on the green. 4. Select Coarse Blue mode. 5. Adjust the Items shown below to converge the blue on the green. Note: If center convergence shifts, use red and blue Items 0 HSTA and 5 VSTA to correct the shift. 4. Exit the Convergence Mode. HD mode 1. Select an HD signal (sync only). (If no HD signal is available, use the Conv. HD with No Signal procedure) 2. Repeat SD Steps 2 through 7 in the HD mode. 3. Exit the Convergence mod
Convergence_Adjustment_Mode.pdfMODELS: VS-50805 / VS-60805 / WT-46805 / WS-55805 / WS-55905 / WS-65905 / WS-73905 6. Convergence Adjustment Mode The Convergence mode is used to perform raster geometry correction, and convergence adjustments. These adjustments must be made in both the SD (NTSC) and HD modes. A. Convergence Mode Activation 1. 2. Press MENU-1-2-5-9 When the Convergence Mode is activated, the display below appears on a Green Crosshatch. Continued on following pages... Page 23 MODELS: VS-50805 / VS-60805 / WT-46805 / WS-55805 / WS-55905 / WS-65905 / WS-73905 B. Selecting the HD or SD Mode 1. 2. Select the Signal Source before entering the Convergence Mode, either an NTSC or HD source. Enter the Convergence Mode _ If the signal source is NTSC, the SD mode is activated. _ If the signal source is HD, the HD mode is activated. (Mitsubishi HD-1080 DTV Receiver required.) Activating the HD mode when no HD signal is available _ Activate the Factory Option Menu (MENU-1-2-7-0) _ Use the Adjust keys to se
Convergence_Circuitry.pdfMODELS: VS-50805 / VS-60805 / WT-46805 / WS-55805 / WS-55905 / WS-65903 / WS-73905 CONVERGENCE CIRCUIT Page 84
Cover-Specfications.pdfMITSUBISHI ELECTRIC Service Manual PROJECTION TELEVISION V16N / V16W CHASSIS ''' V16N MODELS V16W MODELS VS-50805 VS-60805 WT-46805 WS-55805 WS-55905 WS-65905 WS-73905 CAUTION: Before servicing this chassis, it is important that the service person read the "SAFETY PRECAUTIONS" and "PRODUCT SAFETY NOTICE" contained in this manual. Power Input Power Consumption Frequency Range Antenna Input _ CRT Size _ High Voltage _ Speaker : AC 120V, 60Hz : 320W (V16N) : 320W (V16W) SPECIFICATIONS _ Cabinet Dimensions : VHF 54 ~ 470MHz UHF 470 ~ 806MHz : VHF/UHF 75 unbalanced Single axis input : [Except for WS-73905} 7 inches : [WS-73905 only] 9 inches : 32.0kV (at 0A) : [VS-50805 / VS-60805 / WT-46805 / WS-55805] 5" round type, full range 2 pcs. (8 10W) : [WS-55905 / WS-65905 / WS-73905] 5" round type, full range 2 pcs.(8 10W) 2" round type, tweeter 2 pcs. (8 10W) : : : : : : : [VS-50805] 202 lbs [VS-60805] 265 lbs [WT-46805] 171 lbs [WS-55805] 250 lbs [WS-55905] 269 lbs [WS-65905] 366
Cover-TOC.pdfMITSUBISHI ELECTRIC MITSUBISHI DIGITAL ELECTRONICS AMERICA, INC. V16 Chassis Technical Training Manual T 2000 ECHNICAL RAINING HDTV 1080i Capable DVD 480p Capable WS-55805 VS-50805 VS-60805 WS-55905 WS-65905 WS-73905 WT-46805 V16N 4:3 V16W 16:9 Features Service Procedures Block Diagrams Alignments Circuit Descriptions Troubleshooting www.mitsubishi-tv.com Table of Contents Introduction ... I Chapter 1 - Service Procedures ... 1-1 Disassembly ... 1-3 PCB Functions and Locations ... 1-8 Chapter 2 - Alignment Procedures ... 2-1 Initial Setup ...
CRT_Replacement_Procedure.pdfMODELS: VS-50805 / VS-60805 / WT-46805 / WS-55805 / WS-55905 / WS-65905 / WS-73905 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 the Cabinet Disassembly Procedures when performing steps 1 through 4. 1. 2. 3. 4. 5. 6. Remove the Speaker Grille, Front Board, and Screen Assy. Remove the Back Board. Remove the Anode Lead Wire from the CR Block. Remove the PCB-CRT. Remove 4 hex-screws "a" retaining the Optical Unit. [Figure 5-1] Remove 4 screws "b" retaining the Lens. Note: DO NOT loosen the RED screws. Doing so will break the seal between the C-Element and the # 6 Lens, causing leakage of the CRT Coolant. 7. Remove 4 screws "c" retaining the CRT. [Figure 5-2] 8. Remove the Deflection Yoke from the neck of the CRT. [Figure 5-7] Figure 5-1 Figure 5-2 Note: The 4
Deflection-High_Voltage.pdfMODELS: VS-50805 / VS-60805 / WT-46805 / WS-55805 / WS-55905 / WS-65903 / WS-73905 DEFLECTION / HV 115V 115V HV / PROTECT 115V Page 83
Equipment_Signals.pdfMODELS: VS-50805 / VS-60805 / WT-46805 / WS-55805 / WS-55905 / WS-65905 / WS-73905 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 (both SD and HD capable) 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 have a monoscope signal source, connect the unit to a VCR and play a Monoscope *alignment tape. (* Part Number: 859C568060) B. Color Bar Signal Use the color bar signal shown below, unless otherwise specified in this manual. Monoscope Signal 100% 75% 40% 40% 1H Split-Field Color Bars (100% window) Page 19
Focus_Adjustments.pdfMODELS: VS-50805 / VS-60805 / WT-46805 / WS-55805 / WS-55905 / WS-65905 / WS-73905 [Focus Circuit] 15. Dynamic Focus Preset Measuring Instrument Test Point Ext. Trigger Measuring Range Input Signal Input Terminal -----------------Monoscope Video Input Purpose: Symptom: 1. 2. 3. 3. 4. 5. To improve edge focus. Poor focus at the edges of the screen. Supply a Monoscope signal to a Video Input Activate the Convergence Mode, Conv. Misc Function. Set Items 4 FPHS and 6 DPHS to the data values given in Table 1. Select the DF Function under the Conv. Coarse Mode. Set Items 0 DFH and 1 DFV to the data value given in Table 2. Exit the Conv. Mode. CONVERGENCE MODE Acivate ..MENU-1-2-5-9 Misc. ."6" Coarse..."5" Fine ..."4" Color (R,G or B)AUDIO Item No...VIDEO Adjust/Move.ADJUST Cursor Toggle...ENTER Save & Exit..MENU (twice) CONV-MISC. Item # Abbrev V16N Data V16W Data 4 FPHS 186 178 6 DPHS 250 245 Table 1 DF Function Item # Abbrev V16N Data VA6W Data 0 DFH 175 200 1 DFV 50 40 Table 2 [CRT
High_Voltage_Adjustment.pdfMODELS: VS-50805 / VS-60805 / WT-46805 / WS-55805 / WS-55905 / WS-65905 / WS-73905 [HV Circuit] 3. HV Regulation Measuring Instrument Test Point Ext. Trigger Measuring Range Input Signal Input Terminal DC Voltmeter DT 1 & 2 -----------Video Signal Monoscope Video Input Purpose: Symptom: To set the CRT Anode voltage. Dark Picture Note: This adjustment must be rechecked following Adjustment 9 CRT Cutoff. 1. Supply a video monoscope signal. 2. Sent Contrast to maximum, and Brightness to mid position. 3. Connect a DC volt meter between pins 2 and 5 of the DT connector. (Positive lead to pin 2) 4. Activate the Conv-Misc Mode. 5. Select Item 1 HVOL (screen goes black). 6. Adjust Item 1 HVOL for 9V ±0.1V on the meter. 7. Save data and exit the Conv-Misc mode. 8. Confirm that the voltage does not change more than 0.15V. Note: This adjustment must be performed if E2RESET is activated. CONVERGENCE MODE Acivate ..MENU-1-2-5-9 Misc. ."6" Coarse..."5" Fine ..."4" Color (R,G or B)AUDIO Item No..
Interconnect.pdf
Introduction-Safety.pdfMODELS: VS-50805 / VS-60805 / WT-46805 / WS-55805 / WS-55905 / WS-65905 / WS-73905 INTRODUCTION This service manual provides service instructions for PTV Models VS-50805 and VS-60805 which use the V16N chassis, and PTV Models WS-55805, WS-55905, WS-65905, WS-73905 and WT-46805 which use the V16W 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 the Lenticular Screen and Fresnel Lens. 3. Servicing printed circuit boards (PCBs). 4. CRT replacement procedure. 5. Electrical adjustments. 6. Chip parts replacement procedures. 7. Circuit path diagrams. The parts list section of this service manual includes: 1. Cabinet and screen parts. 2. Electrical parts. Schematic and block diagrams of the above listed models are included in this service manual for better understanding of the circuitry. PCB drawings are also included f
Introduction.pdfIntroduction The V16 chassis line offers NTSC receivers that are Digital TV (DTV) capable. When connected to an appropriate Advanced TV (ATV) Receiver, the sets can produce pictures broadcast in the DTV Standard set by the Advanced Television Systems Committee (ATSC). The Digital Television Standard is divided into two categories capable of eighteen video formats: 1) SDTV - Standard Definition TV 2) HDTV - High Definition TV All formats convert the original analog signal to digital, then compress and transmit the digital data. The receiver must reverse the process, decompressing the data and converting it back to the original analog signals. All formats also utilize ghost cancellation. Table 1 compares the DTV video formats in regard to active horizontal lines, pixels (samples) per line, picture aspect ratio, picture repetition rate, and scanning methods. In the Picture Rate column, an I indicates interlace scanning, and a P progressive scanning. SDTV SDTV is comprised of twelve video
Lens-Screen-DiamondShield-VS-50805-60805-WS-55805.pdfMODELS: VS-50805 / VS-60805 / WT-46805 / WS-55805 / WS-55905 / WS-65905 / WS-73905 SERVICING THE LENTICULAR SCREEN AND FRESNEL LENS CAUTION: Wear gloves when handling the Lenticular Screen and Fresnel Lens. This prevents cuts and finger prints. Do not place Fresnel Lens in the sun. This may cause fine and heat related injuries. VS-50805 / VS-60805 / WS-55805 1. Lenticular Screen and Fresnel Lens Removal 1. Remove the screen assembly shown in the Cabinet Disassembly procedure. 2. Remove the Frame Holder by removing 12 screws (a). 3. Remove Screen Holder by removing 6 screws (b). Note: When separating the Lenticular Screen from the Fresnel Lens, use caution while prying the Screen and Lens apart. Use a slot type screw drive, and remove the pressure sensitive double sided tape. Page 10 MODELS: VS-50805 / VS-60805 / WT-46805 / WS-55805 / WS-55905 / WS-65905 / WS-73905 SERVICING THE LENTICULAR SCREEN AND FRESNEL LENS 2. Lenticular Screen and Fresnel Lens Installation. Note: Store the L
Lens-Screen-DiamondShield-WS-55905-65905-73905-WT-46805.pdfMODELS: VS-50805 / VS-60805 / WT-46805 / WS-55805 / WS-55905 / WS-65905 / WS-73905 SERVICING THE LENTICULAR SCREEN AND FRESNEL LENS CAUTION: Wear gloves when handling the Lenticular Screen and Fresnel Lens. This prevents cuts and finger prints. Do not place Fresnel Lens in the sun. This may cause fine and heat related injuries. WS-55905 / WS-65905 / WS-73905 / WT-46805 1a. Lenticular Screen and Fresnel Lens Removal 1. Remove the screen assembly shown in the Cabinet Disassembly procedure. 2. Remove the Screen Frame top section by removing 4 screws (a). 3. Carefully grasp the Lenticular Screen and Fresnel Lens combination and pull upward and out of the Screen Frame Assembly. Note: When separating the Lenticular Screen from the Fresnel Lens, use caution while prying the Screen and Lens apart. Use a slot type screw drive, and remove the pressure sensitive double sided tape. Page 11 MODELS: VS-50805 / VS-60805 / WT-46805 / WS-55805 / WS-55905 / WS-65905 / WS-73905 SERVICING THE LENTICU
List_of_Adjustment_Items.pdfMODELS: VS-50805 / VS-60805 / WT-46805 / WS-55805 / WS-55905 / WS-65905 / WS-73905 E2PROM Replacement IC704 stores the adjustment data. After replacing the IC, set the data to the values given in the following tables. If good performance is not obtained, perform the Adjustments Procedures given in the Notes column. List of Adjustment Items. Function Display Adjustment Item # Abbrev. Description 1 SCT Picture Gain Control 2 SBRT Sub Brightness 3 SCOL Sub Color 4 STIN Sub Tint 5 SCON Sub Contrast 6 RDRH R-Drive (high) 7 GDR G-Drive 8 BDRH B-Drive (high) 9 CTRH R-Cutoff (high) 10 CTGH G-Cutoff (high) 11 CTBH B-Cutoff (high) 12 RDRL R-Drive (low) 13 BDRL B-Drive (low) 14 CTRL R-Cutoff (low) 15 CTGL G-Cutoff (low) 16 CTBL B-Cutoff (low) 17 GMMA Gamma control 18 BRT Brightness control 19 COL Color Gain control 20 TINT Tint Control 21 CONT Picture Gain control 22 SHRP Sharpness control 23 SSH1 Sub Sharpness for NT 24 SHF1 Sharpness F0 for NT 25 PROV Pre/Overshoot Gain 26 LTI Y Edge Enhanceme
Mitsubishi VS-50805, VS-60805, WS-55905, WS-65905, WS-73905, WS-55805, WT-46805 (Chassis V16 N W) (S
On-Screen_Character_Position_Adjustment.pdfMODELS: VS-50805 / VS-60805 / WT-46805 / WS-55805 / WS-55905 / WS-65905 / WS-73905 [Video Circuit] 17. Lens Focus Measuring Instrument Test Point Ext. Trigger Measuring Range Input Signal Input Terminal ------------------Monoscope Video Input Purpose: To set the Lens position for optimum focus. Symptom: Poor focus Note: This adjustment must follow item 6 (Electrostatic Focus). Perform this adjustment for RED, GREEN, and BLUE monochrome pictures. 1. Supply a VIDEO signal (Monoscope). 2. Cover the Red and Blue Lens (producing a green raster). 3. Adjust the Green Lens for best focus at the center of the Monoscope pattern. Note: Attach a white paper to the screen center. During adjustment, observe the picture on the screen from inside for easier adjustment. 4. Repeat Steps 2 and 3 for the Red and Blue monochrome pictures. [On Screen Display] 18.Character Position Measuring Instrument Test Point Ext. Trigger Measuring Range Input Signal Input Terminal ------------------Video Signal Vid
Option_Menu-Default_Settings.pdfMODELS: VS-50805 / VS-60805 / WT-46805 / WS-55805 / WS-55905 / WS-65905 / WS-73905 3. Initial Setup A. 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 "1", "2", "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. CAUTION: Do not select E2 RESET and press QV (RCL). Doing so will require a full item by item alignment of all data values listed in the "Service Adjustment" and Convergence Miscellaneouts modes. CAUTION: Do not select Convergence Reset and press ENTER. This resets all data in the Coarse and Fine Convergence modes. OPTION MENU Initial E2RESET Direct Key Mode :OFF DTV Port :AUTO DTV Signal Strength Power restore :OFF V-chip supported :ON Convergence reset DTV Diagnostics DTV Reset DTV E2 Reset Free Run Factory Option Menu B. Default Settin
Ordering-Identification.pdfMODELS: VS-50805 / VS-60805 / WT-46805 / WS-55805 / WS-55905 / WS-65905 / WS-73905 REPLACEMENT PARTS Parts Ordering To expedite delivery of replacement parts orders, specify the following: 1. Model Number/Serial Number 2. Part Number and description 3. Quantity Note: Unless complete information is supplied, delay in processing of orders will result. Critical and Warranty Parts Designation Critical Electrical Components are indicated by Bold Type in the Parts List. Warranty Return Parts are indicated in the Parts List with an (*). Parts Tolerance Codes Refer to the following chart for tolerance characteristics of electrical components. MARK Tolerance % B ± 0.1 C ± 0.25 D ± 0.5 F ±1 G ±2 J ±5 K ± 10 MARK Tolerance % M ± 20 N ± 30 V ± 10 X + 40 -20 Z + 80 -20 P + 100 -0 Q + 30 -10 MARK Tolerance (pF) M ± 0.1 N ± 0.25 V ± 0.5 X ±1 Z ±2 PAGE 59 MODELS: VS-50805 / VS-60805 / WT-46805 / WS-55805 / WS-55905 / WS-65905 / WS-73905 PAGE 60
PCB-AUDIO.pdf
PCB-CONTROL-2.pdf
PCB-CONTROL_DISPLAY_AI.pdf
PCB-CONVERGENCE_GENERATOR.pdf
PCB-CRTs.pdf
PCB-DOUBLER-1.pdf
PCB-DOUBLER-2.pdf
PCB-FRONT-2.pdf
PCB-Front.pdf
PCB-JUNGLE.pdf
PCB-MAIN.pdf
PCB-PIP-1-V16W.pdf
PCB-PIP-2-V16N.pdf
PCB-POWER.pdf
PCB-PREAMP.pdf
PCB-RGB.pdf
PCB-SIGNAL_FS.pdf
PCB-SIGNAL_HF-Video.pdf
PCB-TERMINAL-Video_Signal_Path.pdf
PCB-TERMINAL.pdf
PCB-YCS_DECODER.pdf
PCB_and_Main_Component_Locations.pdfMODELS: VS-50805 / VS-60805 / WT-46805 / WS-55805 / WS-55905 / WS-65905 / WS-73905 PCB Locations Main Components Location Page 15
Quick_Reference_List.pdfMODELS: VS-50805 / VS-60805 / WT-46805 / WS-55805 / WS-55905 / WS-65905 / WS-73905 QUICK REFERENCE FOR COMMON REPLACEMENT PARTS CRT ASSEMBLIES * 251C205010 * 251C205020 * 251C205030 * 251C206010 * 251C206020 * 251C206030 * 251C205040 * 251C205050 * 251C205060 * 251C205070 * 251C205080 * 251C205090 * 251C206040 * 251C206050 * 251C206060 * 251C206070 * 251C206080 * 251C206090 * 251C204070 * 251C204080 * 251C204090 ASSY-CRT-RED ASSY-CRT-GREEN ASSY-CRT-BLUE ASSY-CRT-RED ASSY-CRT-GREEN ASSY-CRT-BLUE ASSY-CRT-RED ASSY-CRT-GREEN ASSY-CRT-BLUE ASSY-CRT-RED ASSY-CRT-GREEN ASSY-CRT-BLUE ASSY-CRT-RED ASSY-CRT-GREEN ASSY-CRT-BLUE ASSY-CRT-RED ASSY-CRT-GREEN ASSY-CRT-BLUE ASSY-CRT-RED ASSY-CRT-GREEN ASSY-CRT-BLUE VS-50805 VS-50805 VS-50805 VS-60805 VS-60805 VS-60805 WS-55805 WS-55805 WS-55805 WS-55905 WS-55905 WS-55905 WS-65905 WS-65905 WS-65905 WS-73905 WS-73905 WS-73905 WT-46805 WT-46805 WT-46805 HIGH VOLTAGE / DEFLECTION COMPONENTS Q530 T500 261P08201 334P264040 920P016010 330P260020 129P05905
Raster_Centering_and_Static_Convergence_Adjustments.pdfMODELS: VS-50805 / VS-60805 / WT-46805 / WS-55805 / WS-55905 / WS-65905 / WS-73905 [Convergence Circuit] 22. Centering and Static Convergence Measuring Instrument Test Point Ext. Trigger Measuring Range Input Signal Input Terminal -----------------NTSC -- None HD -- HD sync Video & HD Inputs Purpose: Symptom: To converge red, green and blue at the center of the screen Color edging over the entire picture. Preliminary Degauss the shield cover and bracket unit of the CRT assembly ans chassis. HD mode 1. Supply an HD Monoscope signal to the HD Inputs. 2. Select the HD Inputs as the signal source (Input button). 3. Activate the Service Mode, Defl. Jungle Function. 4. Check that the data for Item 14 HPOS is set to 34. 5. Save data and Exit the Service Mode. 6. Enter the Convergence Coarse mode. 7. Check that the data for the HSTA and VTSA items for red, green and blue are set to 0. 8. In the Coarse Green mode: Center the Green Raster using the Green Centering Magnet. Rotate the Green D
Raster_Geometry_Adjustments.pdfMODELS: VS-50805 / VS-60805 / WT-46805 / WS-55805 / WS-55905 / WS-65905 / WS-73905 [Conv/Defl] 19. Geometry Preset Measuring Instrument Test Point Ext. Trigger Measuring Range Input Signal Input Terminal ------------------NTSC & HD Video & HD Inputs Purpose: Symptom: To preset data controlling raster geometry Raster distortion. Note: This procedure is usually only necessary if: An E2PROM is replaced in the Control or Convergence circuits. E2RESET or Convergence Reset has been activated. Procedure In the Service Adjustment and Coarse Convergence Modes set the data to the values given in the Tables below. Function Display V16N Data V16W 55/65/73" V16W 46" Item # Abbrev. HD NTSC HD NTSC HD NTSC 1 HWID 34 39 40 44 38 44 2 HKEY 35 36 40 36 30 25 3 EWPT 47 55 25 25 31 25 4 EWCT 42 42 40 40 40 40 5 EWPB 36 54 31 20 27 20 6 EWCB 34 34 38 34 38 34 7 VHGT 16 16 31 40 21 31 8 VLIN 0 0 0 0 0 0 9 VSCN 7 7 7 7 7 7 10 VLNT 0 0 0 0 0 0 11 VLNB 0 0 0 0 0 0 DEFL JUNGLE Function SERVICE MODE Activ
Screen_Assembly_Parts.pdfMODELS: VS-50805 / VS-60805 / WT-46805 / WS-55805 / WS-55905 / WS-65905 / WS-73905 #] Model Legend: (1) VS-50805, (2) VS-60805, (3) WS-55805, (4) WS-55905, (5) WS-65905. (6) WS-73905, (7) WT-46805 Ref # Part # Part Name & Description [#] Ref # Part # Part Name & Description SCREEN-LENTICULAR - 60" LENS-FRESNEL - 60" CONTROL-PANEL SCREEN CLIP - 60" HOLDER-SCREEN-BOT FRAME-SCREEN-TOP - 60 FRAME-SCREEN-S - 60" CORNER CAP - LEFT CORNER CAP - RIGHT DIAMOND-SHIELD - 60" SCREEN-LENTICULAR - 55" LENS-FRESNEL - 55" CONTROL-PANEL SCREEN CLIP - 60" HOLDER-SCREEN-BOT FRAME-SCREEN-S - 55" CORNER CAP - LEFT CORNER CAP - RIGHT DIAMOND-SHIELD - 55" [#] 290P098020 871D230010 871D283010 871D284010 ACCESSORIES REMOTE CONTROL IB - OWENRS GUIDE V16 IB - OWNERS GUIDE V16 IB - OWNERS GUIDE V16 5&6 VS-50805 (1) 491P089020 (2) 491P090040 (3) 702A391010 (4) 622C060020 (5) 622C063020 (6) 701B400060 (7) 701B417020 (8) 702A388030 (9) 702A388040 (10) 760D613020 SCREEN ASSEMBLY PARTS SCREEN-LENTICULAR - 50" LE
Service_Parts_List.pdfMODELS: VS-50805 / VS-60805 / WT-46805 / WS-55805 / WS-55905 / WS-65905 / WS-73905 #] Model Legend: (1) VS-50805, (2) VS-60805, (3) WS-55805, (4) WS-55905, (5) WS-65905. (6) WS-73905, (7) WT-46805 Ref # Part # Part Name & Description [#] Ref # IC6P00 IC6P50 IC6V30 IC700 IC7000 IC7001 IC7002 IC7003 IC7004 IC7006 IC7007 IC701 IC7014 IC702 IC703 IC704 IC707 IC709 IC710 IC712 IC720 IC721 IC7300 IC7310 IC7330 IC7600 IC7D00 IC7D01 IC7D03 IC7D04 IC7D05 IC7D06 IC7D07 IC7D08 IC7D11 IC7D12 IC7G01 IC7G02 IC7G03 IC7G04 IC7G05 IC7H00 IC7H01 IC7H02 IC800 IC802 IC803 IC804 IC805 IC806 IC807 IC808 IC809 IC810 IC8D01 IC8D02 IC8E01 IC8E02 IC8E03 IC8E04 Part # 275P164010 270P778010 270P626010 275P452040 275P218010 275P217010 275P258010 275P258010 270P348010 279P086010 279P086010 275P452050 275P278020 275P419010 275P242010 275P241010 275P244010 270P706010 275P419010 274P378010 275P336010 263P606010 275P423010 270P626010 270P778010 270P623010 263P436010 270P441010 270P441010 275P245010 270P348010 275P24601
Standby_Power_Supply.pdfMODELS: VS-50805 / VS-60805 / WT-46805 / WS-55805 / WS-55905 / WS-65903 / WS-73905 STANDBY POWER SUPPLIES Page 78
Switched_Power_Supply.pdfMODELS: VS-50805 / VS-60805 / WT-46805 / WS-55805 / WS-55905 / WS-65903 / WS-73905 SWITCHED POWER SUPPLIES 115V Page 79
Sync_Signal_Path.pdfMODELS: VS-50805 / VS-60805 / WT-46805 / WS-55805 / WS-55905 / WS-65903 / WS-73905 MAIN PICTURE SYNC PATH Page 81
Tuning.pdf
Video-Color_Signal_Path.pdfMODELS: VS-50805 / VS-60805 / WT-46805 / WS-55805 / WS-55905 / WS-65903 / WS-73905 VIDEO/COLOR SIGNAL PATH Page 80
Video_Adjustments.pdfMODELS: VS-50805 / VS-60805 / WT-46805 / WS-55805 / WS-55905 / WS-65905 / WS-73905 [HV Circuit] 3. HV Regulation Measuring Instrument Test Point Ext. Trigger Measuring Range Input Signal Input Terminal DC Voltmeter DT 1 & 2 -----------Video Signal Monoscope Video Input Purpose: Symptom: To set the CRT Anode voltage. Dark Picture Note: This adjustment must be rechecked following Adjustment 9 CRT Cutoff. 1. Supply a video monoscope signal. 2. Sent Contrast to maximum, and Brightness to mid position. 3. Connect a DC volt meter between pins 2 and 5 of the DT connector. (Positive lead to pin 2) 4. Activate the Conv-Misc Mode. 5. Select Item 1 HVOL (screen goes black). 6. Adjust Item 1 HVOL for 9V ±0.1V on the meter. 7. Save data and exit the Conv-Misc mode. 8. Confirm that the voltage does not change more than 0.15V. Note: This adjustment must be performed if E2RESET is activated. CONVERGENCE MODE Acivate ..MENU-1-2-5-9 Misc. ."6" Coarse..."5" Fine ..."4" Color (R,G or B)AUDIO Item No..

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