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Toshiba TV-GEN-03 Technical Training Manual
Toshiba TV-GEN-03 Technical Training Manual

Toshiba TV-GEN-03 Technical Training Manual

Toshiba projection television technical training

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Subject:
Digital Convergence Alignment
Product:
PROJECTION TELEVISION, Rear CRT
Chassis:
All Toshiba rear CRT projection televisions with digital convergence
Model Year: All
Models:
All
Prerequisites:
Purpose:
Upon completion of this Training Module, the technician will be able to properly
converge a Toshiba CRT-based rear projection television set. Using the correct digital
convergence alignment procedures will enable the technician to identify symptoms
requiring more in-depth troubleshooting.
These skills will help improve servicing picture quality issues.
Objectives:
1.
While performing a convergence alignment, specify when and when not to reload
convergence backup data 100% of the time.
2.
Following a written procedure, correctly reload the convergence backup data
from the DCU memory.
3.
Given the TV model number and picture size, identify the correct convergence
overlay and grid 100% of the time.
4.
Following a written procedure, and using the correct overlay(s), align the
convergence to factory specifications.
5.
While performing a convergence alignment, identify visual symptoms which
indicate further troubleshooting is required, at least 80% of the time.
Product Specific Service Manuals:
This training is designed as an aid to the technician in servicing Toshiba products. It is not a
replacement for the appropriate service manual(s). Toshiba service manuals contain product and
model specific information and must be consulted prior to servicing any product.
Product Safety Precautions:
Product Safety Precautions are described in the Toshiba service manual(s) for products and models
covered in this training. All safety precautions and checks must be complied with before returning any
product to the customer. Servicers who defeat safety features or fail to perform safety checks may be
liable for any resulting damages and may expose themselves and others to possible injury.
2002 Toshiba America Consumer Products, Inc.
TECHNICAL TRAINING
None
TOSHIBA AMERICA CONSUMER PRODUCTS, INC.
NATIONAL SERVICE DIVISION
1420-B TOSHIBA DR.
LEBANON, TN 37087
TV-GEN-03

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Summary of Contents for Toshiba TV-GEN-03

  • Page 1 80% of the time. Product Specific Service Manuals: This training is designed as an aid to the technician in servicing Toshiba products. It is not a replacement for the appropriate service manual(s). Toshiba service manuals contain product and model specific information and must be consulted prior to servicing any product.
  • Page 2 Consider this: Toshiba CRT based rear projection televisions allow convergence adjustments to be made in two areas: 1. User convergence area - This area can be accessed through the customer picture menu by using the remote control or the front panel keys.
  • Page 3 Full 43” 48” 50” 50” 16:9 Full 53” 55” 56” 16:9 57” 16:9 Full 61” 65” 16:9 71” Table 1 Example 1: PSOL40X1 Example 2 TOSHIBA PJTV Model Year 2002+ 2002+ 2002+ 2002+ Module No. TV-GEN-03 Page 2 of 20...
  • Page 4 Figure 2. d. Press the MENU key on the front panel a second time. RCUT will appear in the upper left corner of the screen. Digital Convergence Alignment Figure 1 Figure 2 Module No. TV-GEN-03 TOSHIBA PJTV Page 3 of 20...
  • Page 5 Enter the convergence alignment service mode. d. Optically and electrically focus each CRT. 2. Mechanical tilt a. Check each CRTs tilt. b. Adjust if necessary. c. Store the data. Digital Convergence Alignment Figure 3 Module No. TV-GEN-03 TOSHIBA PJTV Page 4 of 20...
  • Page 6 Readme: The convergence alignment may not be complete at this point. Depending on the year of production and the type of unit being adjusted, there could be several different picture size modes that require adjustment. TOSHIBA PJTV Digital Convergence Alignment Module No. TV-GEN-03 Page 5 of 20...
  • Page 7 Digital Convergence Alignment 3.5mm 2.5mm 3.5mm 3.5mm 2.5mm 3.5mm 3.5mm 2.5mm 3.5mm 3.8mm 2.7mm 3.8mm 4.5mm 3.2mm 4.5mm 4.5mm 3.2mm 4.5mm 4.5mm 4.5mm 4.5mm 4.5mm 3.5mm 3.5mm 3.5mm Module No. TV-GEN-03 Page 6 of 20 2.5mm 2.3mm 3.2mm 3.2mm 2.5mm 2.5mm...
  • Page 8 9. “CALIBRATION FINISHED” will display on screen and the unit will exit to service mode. a. The new convergence data is saved to memory and new backup data is created. 10. Power the unit off to exit service mode. Digital Convergence Alignment Figure 5 Module No. TV-GEN-03 TOSHIBA PJTV Page 7 of 20...
  • Page 9 Repeated Touch Focus errors Intermittent loss of convergence Back up data will not load Cannot enter Service Mode Table 3 TOSHIBA PJTV Digital Convergence Alignment Module No. TV-GEN-03 Page 8 of 20...
  • Page 10: Section 1: Optical & Electrical Focus

    Move the red vertical cross hair as far as it will go to the left. Note that location. Set the red vertical cross hair to the center of the two extremes. TOSHIBA PJTV Digital Convergence Alignment Appendix A Rotate the yoke until the pattern is Module No. TV-GEN-03 Page 9 of 20...
  • Page 11: Section 4: Electrical Centering

    Use low tack drafting tape to secure the overlay to the screen. Make the overlay as flat as possible against the screen to reduce parallax errors. TOSHIBA PJTV Digital Convergence Alignment Appendix A Module No. TV-GEN-03 Page 10 of 20...
  • Page 12: Section 6: Red Convergence

    3. Check the picture quality using a live video signal. acceptable, put the unit back together. If the picture quality is not acceptable, recheck the convergence alignment. TOSHIBA PJTV Digital Convergence Alignment Appendix A If the picture quality is Module No. TV-GEN-03 Page 11 of 20...
  • Page 13: Section 9: Width, Height, & Vertical Linearity Adjustments

    If needed, repeat both the HIT and VLIN adjustments for the best results. Push the 7 key to return to the convergence mode and continue with Section 5. TOSHIBA PJTV Digital Convergence Alignment Appendix A Module No. TV-GEN-03 Page 12 of 20...
  • Page 14 After the data is stored, “Please Press Touch Focus” will appear on screen. Press the “Touch Focus” button on the unit control panel. TOSHIBA PJTV Digital Convergence Alignment Appendix B Rotate the yoke until the pattern is Module No. TV-GEN-03 Page 13 of 20...
  • Page 15 16. Exit the service convergence adjustment mode as described in Section 2. Section 4: ELECTRICAL CENTERING 1. Turn the power on. 2. Using a signal generator, display a crosshatch pattern. 3. Enter the service adjustment mode. TOSHIBA PJTV Digital Convergence Alignment Appendix B Module No. TV-GEN-03 Page 14 of 20...
  • Page 16 Press the 3 key until the cursor turns red. Align the red convergence pattern to the green pattern, using the same procedure used to align the green convergence pattern to the overlay. TOSHIBA PJTV Digital Convergence Alignment Appendix B Module No. TV-GEN-03 Page 15 of 20...
  • Page 17 If needed, repeat both the HIT and VLIN adjustments for the best results. 10. Push the 7 key to return to the convergence mode and continue with Section 5. TOSHIBA PJTV Digital Convergence Alignment Appendix B Module No. TV-GEN-03 Page 16 of 20...
  • Page 18 After the data is stored, “Please Press Touch Focus” will appear on screen. Press the “Touch Focus” button on the unit control panel. TOSHIBA PJTV Digital Convergence Alignment Appendix C Rotate the yoke until the pattern is Module No. TV-GEN-03 Page 17 of 20...
  • Page 19 16. Exit the service convergence adjustment mode as described in Section 2. Section 4: ELECTRICAL CENTERING 1. Turn the power on. 2. Using a signal generator, display a crosshatch pattern. 3. Enter the service adjustment mode. TOSHIBA PJTV Digital Convergence Alignment Appendix C Module No. TV-GEN-03 Page 18 of 20...
  • Page 20 Press the 3 key until the cursor turns red. Align the red convergence pattern to the green pattern, using the same procedure used to align the green convergence pattern to the overlay. TOSHIBA PJTV Digital Convergence Alignment Appendix C Module No. TV-GEN-03 Page 19 of 20...
  • Page 21 If needed, repeat both the HIT and VLIN adjustments for the best results. 11. Push the 7 key to return to the convergence mode and continue with Section 5. TOSHIBA PJTV Digital Convergence Alignment Appendix C Module No. TV-GEN-03 Page 20 of 20...