KX-HTS32RU, KX-HTS824RU - Panasonic PBX Service Manual (repair manual). Page 2

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1 Safety Precautions -----------------------------------------------3

1.1. For Service Technicians  ---------------------------------3
1.2. Insulation Resistance Test -------------------------------4

2 Warning --------------------------------------------------------------5

2.1. Battery Caution ---------------------------------------------5

2.1.1. Information for Users on Collection and

Disposal of Old Equipment and used
Baries-----------------------------------------------------5

2.2. Caution--------------------------------------------------------6
2.3. About Lead Free Solder (PbF: Pb free) --------------7

2.3.1. Suggested PbF Solder -------------------------------8

2.4. Discarding of P. C. Board --------------------------------8

3 Specifications ------------------------------------------------------9

3.1. General Description ---------------------------------------9
3.2. Characteristics -------------------------------------------- 10

4 Technical Descriptions---------------------------------------- 11

4.1. Block Diagram -------------------------------------------- 11
4.2. Main Unit --------------------------------------------------- 12

4.2.1. CPU/L2SW/DSP/ROM/RAM/USB/RTC ------- 14
4.2.2. Wireless LAN ----------------------------------------- 20
4.2.3. LCOT4 Block ----------------------------------------- 23
4.2.4. SLC8 Block ------------------------------------------- 28
4.2.5. DC-DC Converter ----------------------------------- 33
4.2.6. Battery Interface ------------------------------------- 34

4.3. AC/DC Unit ------------------------------------------------ 35

5 Location of Controls and Components------------------ 36

5.1. Names and Locations ----------------------------------- 36

6 Troubleshooting Guide---------------------------------------- 37

6.1. General Description ------------------------------------- 37
6.2. Power Failure Analysis --------------------------------- 38
6.3. Error Code ------------------------------------------------- 40

6.3.1. CPU ----------------------------------------------------- 43
6.3.2. FAN ----------------------------------------------------- 46
6.3.3. USB ----------------------------------------------------- 47
6.3.4. RTC ----------------------------------------------------- 48
6.3.5. SPI-BUS ----------------------------------------------- 49

6.4. LCOT4 ------------------------------------------------------ 51
6.5. SLC8 -------------------------------------------------------- 55
6.6. VoIP System----------------------------------------------- 60
6.7. Wireless LAN---------------------------------------------- 62
6.8. System Clean Install Procedure ---------------------- 63

6.8.1. Preparation-------------------------------------------- 63
6.8.2. Clean Install Operation----------------------------- 64

7 Disassembly and Assembly Instructions --------------- 65

7.1. Remove the Cable Cover and Upper Cabinet ---- 65
7.2. Main Board and Power Supply Board -------------- 67

7.2.1. Remove the Main Board--------------------------- 67

7.3. Remove the Power Supply Board ------------------- 68
7.4. Assembly the Main Board------------------------------ 69
7.5. Assembly the Power Supply Board------------------ 70
7.6. Assembly the Fan ---------------------------------------- 71
7.7. Assembly for Lead wire--------------------------------- 72

8 Maintenance ------------------------------------------------------ 75

8.1. How To Replace a Flat Package IC ----------------- 75

8.1.1. Preparation-------------------------------------------- 75
8.1.2. Removal Procedure--------------------------------- 75
8.1.3. Procedure --------------------------------------------- 75
8.1.4. Removing Solder From Between Pins --------- 75

8.2. How to Replace the LLP (Leadless Leadframe

Package) IC and IC ground plate-------------------- 76

8.2.1. Preparation ------------------------------------------- 76
8.2.2. Caution ------------------------------------------------ 76
8.2.3. How to Remove the IC ---------------------------- 76
8.2.4. How to Install the IC -------------------------------- 76
8.2.5. How to Remove a Solder Bridge (Doesn't

apply to IC ground plate.) ------------------------- 77

9 Schematic Diagram -------------------------------------------- 78

9.1. Main Board ------------------------------------------------ 78

9.1.1. No.1 ---------------------------------------------------- 78
9.1.2. No.2 ---------------------------------------------------- 79
9.1.3. No.3 ---------------------------------------------------- 80
9.1.4. No.4 ---------------------------------------------------- 81
9.1.5. No.5 ---------------------------------------------------- 82
9.1.6. No.6 ---------------------------------------------------- 83
9.1.7. No.7 ---------------------------------------------------- 84
9.1.8. No.8 ---------------------------------------------------- 85
9.1.9. No.9 ---------------------------------------------------- 86

9.1.10. No.10--------------------------------------------------- 87

9.1.11. No.11 --------------------------------------------------- 88

9.1.12. No.12--------------------------------------------------- 89

10 Printed Circuit Board------------------------------------------ 90

10.1. Main Board ------------------------------------------------ 90

10.1.1. Component View ------------------------------------ 90
10.1.2. Bottom View ------------------------------------------ 91

11 Appendix Information of Schematic Diagram -------- 92

12 Exploded View and Replacement Parts List----------- 93

12.1. Cabinet and Electric Parts----------------------------- 93
12.2. Accessories and Packing Materials ----------------- 94
12.3. Replacement Parts List -------------------------------- 95

12.3.1. Cabinet and Electrical Parts---------------------- 95
12.3.2. Accessories and Packing Materials ------------ 96
12.3.3. Main Board Parts ----------------------------------- 96

13 History------------------------------------------------------------- 186