Important Safety Notice

There are special parts used in Panasonic LCD Projectors which are important for safety. These parts are shaded on the schematic diagram. It is essential that these critical parts should be replaced with manufacturer's specified parts to prevent shock, fire, or other hazards. Do not modify the original design without permission of PANASONIC BROADCAST & TELEVISION SYSTEMS COMPANY.

WARNING:

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

- Reorient or relocate the receiving antenna,

- Increase the separation between the equipment and receiver.

- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

- Consult the dealer or an experienced radio/TV technician for help.

CAUTION: Any unauthorized changes or modifications to this equipment will void the users authority to operate.

CONTENTS

Page

1 Safety Precautions 5

1.1. General Guidelines 5

1.2. Leakage Current Check 5

1.3. UV Precaution and UHM Lamp Precautions 5

2 Ext Option 6

2.1. Procedure to enter EXT OPTION 6

2.2. EXT OPTION Menu and Functions 6

2.3. Canceling EXT OPTION 7

3 Self-Check Mode 7

3.1. Procedure to enter the self-check mode 7

3.2. Self Check Display and Contents 8

3.3. Canceling the self-check mode 8

4 Test Pattern 9

4.1. Procedure to display test patterns 9

4.2. Canceling the test pattern display 9

5 Flicker Adjustment Mode 9

5.1. Procedure to enter the adjustment mode 9

5.2. Adjustment Display and Contents 9

5.3. Canceling the flicker adjustment mode 9

6 Using the SERIAL Connector 10

6.1. Connection 10

6.2. Pin Layout and Signal Names for SERIAL Connector ■--■10

6.3. Communication Settings 10

6.4. Basic Format 11

6.5. Control / Query Commands 11

6.6. Communication Cable Specifications 13

6.7. Signal Selector Connecting Cable Specifications 14

7 Disassembly Instructions 15

7.1. Printed Circuit Board and Main Parts Location 15

7.2. Removal of Upper Case 16

7.3. Removal of A-P.C.Board 16

7.4. Removal of WL-P.C.Board (PT-LB60NTU/E/EA, PT-LB55NTE/EA only) 17

7.5. Removal of S1-P.C.Board 17

7.6. Removal of S2-P.C.Board 17

7.7. Removal of K-P.C.Board 17

7.8. Removal of G-P.C.Board 18

7.9. Removal of Z-P.C.Board 18

7.10. Removal of B/Q-Module 18

7.11. Removal of P-Module 18

7.12. Removal of Lamp Unit 19

7.13. Removal of Analysis Block and Lens 19

7.14. Removal of LCD Block 19

7.15. Replacement of LCD Panel (B) 20

Page

7.16. LCD Panel Discrimination 21

7.17. LCD Panel Combination 21

7.18. Replacement of Incidence Polarizer (R and B) 21

7.19. Replacement of Incidence Polarizer (G) 21

7.20. Replacement of Projection Polarizer 22

7.21. Replacement of PBS Array (Analysis Block) 22

8 Measurement and Adjustments 24

8.1. Adjustment Procedure Flowchart 24

8.2. Cautions for Adjustment 24

8.3. Setting Before Adjustment 24

8.4. Convergence Adjustment 24

8.5. Lighting Area Adjustment 26

8.6. Software for Adjustment 28

8.7. Flicker Adjustment 31

8.8. Input Level Adjustment 31

8.9. Model Information Setup 32

9 Troubleshooting 33

10 Interconnection Block Diagram 45

10.1. Interconnection Block Diagram (1/2) 45

10.2. Interconnection Block Diagram (2/2) 46

11 Block Diagram 47

11.1. Power Supply 47

11.2. Signal Processing (1/3) 48

11.3. Signal Processing (2/3) 49

11.4. Signal Processing (3/3) 50

12 Schematic Diagram 51

13 Circuit Boards 65

14 Terminal guide of ICs and transistors 67

15 Exploded Views 68

16 Replacement Parts List 71

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