Read Panasonic KX-NT680RU-B Service Manual online
2
KX-NT680 Series
TABLE OF CONTENTS
PAGE
PAGE
1 Safety Precautions -----------------------------------------------3
1.1. For Service Technicians ---------------------------------3
2 Warning --------------------------------------------------------------4
2.1. Battery Caution ---------------------------------------------4
2.1.1. Information for Users on Collection and
Disposal of Old Batteries ----------------------------4
2.2. Caution--------------------------------------------------------5
2.3. About Lead Free Solder (PbF: Pb free) --------------6
2.3. About Lead Free Solder (PbF: Pb free) --------------6
2.3.1. Suggested PbF Solder -------------------------------7
2.4. Discarding of P. C. Board --------------------------------7
3 Specifications ------------------------------------------------------8
4 Technical Descriptions------------------------------------------9
4 Technical Descriptions------------------------------------------9
4.1. Block Diagram ----------------------------------------------9
4.2. Circuit Operations ---------------------------------------- 10
4.2. Circuit Operations ---------------------------------------- 10
4.2.1. Color TFT LCD display----------------------------- 10
4.2.2. Reset Circuit ------------------------------------------ 10
4.2.3. Ethernet Circuit -------------------------------------- 11
4.2.4. PoE Circuit -------------------------------------------- 12
4.2.5. Analog Circuit ---------------------------------------- 13
4.2.6. Key Circuit--------------------------------------------- 14
4.2.7. LED Circuit -------------------------------------------- 14
4.2.8. ASIC ---------------------------------------------------- 15
4.2.9. BT(Bluetooth) Module ------------------------------ 15
4.2.2. Reset Circuit ------------------------------------------ 10
4.2.3. Ethernet Circuit -------------------------------------- 11
4.2.4. PoE Circuit -------------------------------------------- 12
4.2.5. Analog Circuit ---------------------------------------- 13
4.2.6. Key Circuit--------------------------------------------- 14
4.2.7. LED Circuit -------------------------------------------- 14
4.2.8. ASIC ---------------------------------------------------- 15
4.2.9. BT(Bluetooth) Module ------------------------------ 15
4.2.10. Power Supply Circuit ------------------------------- 16
5 Location of Controls and Components------------------ 17
5.1. Names and Locations ----------------------------------- 17
6 Installation Instructions--------------------------------------- 20
6.1. Connections ----------------------------------------------- 20
7 Test Mode ---------------------------------------------------------- 21
7.1. Loopback Test Mode ------------------------------------ 21
7.1.1. Preparation-------------------------------------------- 21
7.1.2. Communication Test -------------------------------- 21
7.1.3. Quit Test Mode for communication test ------- 22
7.1.2. Communication Test -------------------------------- 21
7.1.3. Quit Test Mode for communication test ------- 22
7.2. Functional Test Mode ----------------------------------- 22
7.2.1. Preparation-------------------------------------------- 22
7.2.2. Functional Test mode lists------------------------- 22
7.2.3. Quit this Test Mode --------------------------------- 23
7.2.2. Functional Test mode lists------------------------- 22
7.2.3. Quit this Test Mode --------------------------------- 23
8 Service Mode ----------------------------------------------------- 24
8.1. Factory Setting-------------------------------------------- 24
8.1.1. How to Clear User Setting ------------------------ 24
8.2. How to Change MAC Address Label---------------- 24
8.2.1. Replacing Main P.C.B. ----------------------------- 24
8.2.2. Attaching MAC Address Label ------------------- 25
8.2.2. Attaching MAC Address Label ------------------- 25
9 Troubleshooting Guide---------------------------------------- 26
9.1. No Operation ---------------------------------------------- 26
9.1.1. Power ON Error-------------------------------------- 26
9.1.2. Power Supply : AC adaptor ----------------------- 26
9.1.3. Power Supply : PoE -------------------------------- 27
9.1.2. Power Supply : AC adaptor ----------------------- 26
9.1.3. Power Supply : PoE -------------------------------- 27
9.2. Color LCD Does Not Operate ------------------------- 31
9.2.1. Color LCD Not Operate ---------------------------- 31
9.3. Handset Does Not work -------------------------------- 32
9.3.1. Receive ------------------------------------------------ 32
9.3.2. Send ---------------------------------------------------- 32
9.3.2. Send ---------------------------------------------------- 32
9.4. Headset Does Not work -------------------------------- 33
9.4.1. Receive ------------------------------------------------ 33
9.4.2. Send ---------------------------------------------------- 33
9.4.2. Send ---------------------------------------------------- 33
9.5. Speaker-Phone Does Not work----------------------- 34
9.5.1. Receive ------------------------------------------------ 34
9.5.2. Send---------------------------------------------------- 34
9.6. BT (Bluetooth) Does Not work ----------------------- 35
9.7. EHS Does Not work (EHS control signal) --------- 36
9.8. Ethernet Does Not work ------------------------------- 37
9.7. EHS Does Not work (EHS control signal) --------- 36
9.8. Ethernet Does Not work ------------------------------- 37
9.8.1. L2SW Data error ------------------------------------ 37
9.8.2. LAN port----------------------------------------------- 38
9.8.3. PC port ------------------------------------------------ 38
9.8.2. LAN port----------------------------------------------- 38
9.8.3. PC port ------------------------------------------------ 38
9.9. LCD back light and LED Not Light ------------------ 39
10 Disassembly and Assembly Instructions -------------- 40
10.1. Remove Main Board ------------------------------------ 40
10.2. Remove LCD --------------------------------------------- 41
10.3. Assembly LCD-------------------------------------------- 42
10.4. Assembly for Lead wire -------------------------------- 42
10.2. Remove LCD --------------------------------------------- 41
10.3. Assembly LCD-------------------------------------------- 42
10.4. Assembly for Lead wire -------------------------------- 42
11 Maintenance------------------------------------------------------ 43
11.1. How To Replace a Flat Package IC ----------------- 43
11.1.1. Preparation ------------------------------------------- 43
11.1.2. Removal Procedure -------------------------------- 43
11.1.3. Procedure--------------------------------------------- 43
11.1.4. Removing Solder From Between Pins--------- 43
11.1.2. Removal Procedure -------------------------------- 43
11.1.3. Procedure--------------------------------------------- 43
11.1.4. Removing Solder From Between Pins--------- 43
11.2. How to Replace the LLP (Leadless Leadframe
Package) IC and IC ground plate-------------------- 44
11.2.1. Preparation ------------------------------------------- 44
11.2.2. Caution ------------------------------------------------ 44
11.2.3. How to Remove the IC ---------------------------- 44
11.2.4. How to Install the IC -------------------------------- 44
11.2.5. How to Remove a Solder Bridge (Doesn't
11.2.2. Caution ------------------------------------------------ 44
11.2.3. How to Remove the IC ---------------------------- 44
11.2.4. How to Install the IC -------------------------------- 44
11.2.5. How to Remove a Solder Bridge (Doesn't
apply to IC ground plate.) ------------------------- 45
12 Schematic Diagram -------------------------------------------- 46
12.1. Main Board ------------------------------------------------ 46
12.2. Waveform -------------------------------------------------- 53
12.2. Waveform -------------------------------------------------- 53
12.2.1. No. (1) - (8) ------------------------------------------- 53
12.2.2. No. (9) - (16) ----------------------------------------- 54
12.2.3. No. (17) - (24)---------------------------------------- 55
12.2.4. No. (25) - (32)---------------------------------------- 56
12.2.5. No. (33), (34)----------------------------------------- 57
12.2.2. No. (9) - (16) ----------------------------------------- 54
12.2.3. No. (17) - (24)---------------------------------------- 55
12.2.4. No. (25) - (32)---------------------------------------- 56
12.2.5. No. (33), (34)----------------------------------------- 57
13 Printed Circuit Board------------------------------------------ 58
13.1. Main Board ------------------------------------------------ 58
13.1.1. Component View ------------------------------------ 58
13.1.2. Bottom View ------------------------------------------ 59
13.1.2. Bottom View ------------------------------------------ 59
14 Appendix Information of Schematic Diagram -------- 60
15 Exploded View and Replacement Parts List----------- 61
15 Exploded View and Replacement Parts List----------- 61
15.1. Cabinet and Electric Parts----------------------------- 61
15.2. Accessories and Packing Materials ----------------- 62
15.3. Replacement Parts List -------------------------------- 63
15.2. Accessories and Packing Materials ----------------- 62
15.3. Replacement Parts List -------------------------------- 63
15.3.1. Cabinet and Electrical Parts---------------------- 63
15.3.2. Accessories and Packing Materials ------------ 64
15.3.3. Main Board Parts ----------------------------------- 64
15.3.2. Accessories and Packing Materials ------------ 64
15.3.3. Main Board Parts ----------------------------------- 64
16 History-------------------------------------------------------------- 69
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