Read Panasonic KX-HDV20RU Service Manual online
2
KX-HDV20 Series
TABLE OF CONTENTS
PAGE
PAGE
1 Safety Precautions -----------------------------------------------3
1.1. For Service Technicians ---------------------------------3
2 Warning --------------------------------------------------------------3
2.1. Information for Users on Collection and
Disposal of Old Equipment and used Batteries-----3
2.2. About Lead Free Solder (PbF: Pb free) --------------4
2.2.1. Suggested PbF Solder -------------------------------4
2.3. Discarding of P. C. Board --------------------------------4
3 Specifications ------------------------------------------------------5
4 Technical Descriptions------------------------------------------6
4 Technical Descriptions------------------------------------------6
4.1. Block Diagram ----------------------------------------------6
4.2. Circuit Operations ------------------------------------------7
4.2. Circuit Operations ------------------------------------------7
4.2.1. Power supply Circuit----------------------------------7
4.2.2. Key Circuit ----------------------------------------------8
4.2.3. LED Circuit ----------------------------------------------8
4.2.4. Self Label LCD Circuit--------------------------------9
4.2.5. Data Communication Circuit(USB)----------------9
4.2.2. Key Circuit ----------------------------------------------8
4.2.3. LED Circuit ----------------------------------------------8
4.2.4. Self Label LCD Circuit--------------------------------9
4.2.5. Data Communication Circuit(USB)----------------9
5 Location of Controls and Components------------------ 10
5.1. Name and Locations ------------------------------------ 10
6 Installation Instructions--------------------------------------- 11
6.1. Connections ----------------------------------------------- 11
7 Test Mode ---------------------------------------------------------- 12
7.1. Preparation ------------------------------------------------ 12
7.2. HDV20 Test ------------------------------------------------ 12
7.2. HDV20 Test ------------------------------------------------ 12
8 Troubleshooting Guide---------------------------------------- 13
8.1. No Operation ---------------------------------------------- 13
8.1.1. Power ON Error-------------------------------------- 13
8.2. LCD Does Not Operate --------------------------------- 14
8.3. LED Does Not Light ------------------------------------- 15
8.4. HDV20(Upper or Lower) Communication
8.3. LED Does Not Light ------------------------------------- 15
8.4. HDV20(Upper or Lower) Communication
Error --------------------------------------------------------- 15
9 Disassembly and Assembly Instructions --------------- 16
9.1. Remove Main Board------------------------------------- 16
9.2. Assembly for Lead wire--------------------------------- 17
9.2. Assembly for Lead wire--------------------------------- 17
10 Maintenance ------------------------------------------------------ 18
10.1. Terminal Guide of the ICs Transistors and
Diodes------------------------------------------------------- 18
10.1.1. Main Board-------------------------------------------- 18
10.1.2. Back Light Board ------------------------------------ 18
10.1.2. Back Light Board ------------------------------------ 18
10.2. How To Replace a Flat Package IC ----------------- 19
10.2.1. Preparation-------------------------------------------- 19
10.2.2. Removal Procedure--------------------------------- 19
10.2.3. Procedure --------------------------------------------- 19
10.2.4. Removing Solder From Between Pins --------- 19
10.2.2. Removal Procedure--------------------------------- 19
10.2.3. Procedure --------------------------------------------- 19
10.2.4. Removing Solder From Between Pins --------- 19
11 Schematic Diagram--------------------------------------------- 20
11.1. Main --------------------------------------------------------- 20
11.2. Back Light -------------------------------------------------- 21
11.3. Waveform -------------------------------------------------- 22
11.2. Back Light -------------------------------------------------- 21
11.3. Waveform -------------------------------------------------- 22
12 Printed Circuit Board ------------------------------------------ 23
12.1. Main Board------------------------------------------------- 23
12.1.1. Component View ------------------------------------ 23
12.1.2. Bottom View ------------------------------------------ 24
12.1.2. Bottom View ------------------------------------------ 24
12.2. Back Light Board ----------------------------------------- 25
13 Appendix Information of Schematic Diagram --------- 26
14 Exploded View and Replacement Parts List ----------- 27
14 Exploded View and Replacement Parts List ----------- 27
14.1. Cabinet and Electric Parts ----------------------------- 27
14.2. Accessories and Packing Materials ----------------- 28
14.3. Replacement Parts List --------------------------------- 29
14.2. Accessories and Packing Materials ----------------- 28
14.3. Replacement Parts List --------------------------------- 29
14.3.1. Cabinet and Electrical Parts---------------------- 29
14.3.2. Accessories and Packing Materials ------------ 29
14.3.3. Main Board Parts ----------------------------------- 30
14.3.2. Accessories and Packing Materials ------------ 29
14.3.3. Main Board Parts ----------------------------------- 30
15 History-------------------------------------------------------------- 32
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