Read Panasonic KX-HT82480 / KX-HT82470 / KX-HT82460 Service Manual online
ORDER NO. KMS1609170CE
Option Cards
Model No.
KX-HT82480
(4-Port Analogue Trunk Card)
KX-HT82470
(8-Port Single Line Telephone Extension Card)
KX-HT82460
(2-Port Doorphone/Door Opener Card)
Series
[ Version 1.0 ]
KX-HT82480
KX-HT82470
KX-HT82460
2
KX-HT82480/82470/82460 Series
TABLE OF CONTENTS
PAGE
PAGE
1 Safety Precautions
-----------------------------------------------3
1.1. For Service Technicians ---------------------------------3
1.2. Insulation Resistance Test -------------------------------4
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
Baries-----------------------------------------------------5
2.2. Caution--------------------------------------------------------6
2.3. About Lead Free Solder (PbF: Pb free) --------------7
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. LCOT4 (KX-HT82480) ------------------------------------9
3.2. SLC8 (KX-HT82470) --------------------------------------9
3.3. DPH2 (KX-HT82460)--------------------------------------9
3.2. SLC8 (KX-HT82470) --------------------------------------9
3.3. DPH2 (KX-HT82460)--------------------------------------9
4 Technical Descriptions
---------------------------------------- 10
4.1. Block Diagram -------------------------------------------- 10
4.2. Unit----------------------------------------------------------- 11
4.2. Unit----------------------------------------------------------- 11
4.2.1. LCOT4 Block ----------------------------------------- 11
4.2.2. SLC8 Block ------------------------------------------- 16
4.2.3. DPH2 Block ------------------------------------------- 21
4.2.2. SLC8 Block ------------------------------------------- 16
4.2.3. DPH2 Block ------------------------------------------- 21
5 Location of Controls and Components
------------------ 23
5.1. Names and Locations----------------------------------- 23
6 Installation Instructions
--------------------------------------- 24
6.1. LCOT4 Card (KX-HT82480)--------------------------- 24
6.2. SLC8 Card (KX-HT82470)----------------------------- 25
6.3. DPH2 Card (KX-HT82460) ---------------------------- 26
6.2. SLC8 Card (KX-HT82470)----------------------------- 25
6.3. DPH2 Card (KX-HT82460) ---------------------------- 26
7 Troubleshooting Guide
---------------------------------------- 27
7.1. LCOT4 ------------------------------------------------------ 27
7.2. SLC8 -------------------------------------------------------- 31
7.3. DPH2 -------------------------------------------------------- 36
7.2. SLC8 -------------------------------------------------------- 31
7.3. DPH2 -------------------------------------------------------- 36
7.3.1. Cannot Call From Doorphone -------------------- 36
7.3.2. Cannot Talk To Doorphone------------------------ 37
7.3.3. Cannot use door opener--------------------------- 37
7.3.2. Cannot Talk To Doorphone------------------------ 37
7.3.3. Cannot use door opener--------------------------- 37
8 Maintenance
------------------------------------------------------ 38
8.1. How To Replace a Flat Package IC ----------------- 38
8.1.1. Preparation-------------------------------------------- 38
8.1.2. Removal Procedure--------------------------------- 38
8.1.3. Procedure --------------------------------------------- 38
8.1.4. Removing Solder From Between Pins --------- 38
8.1.2. Removal Procedure--------------------------------- 38
8.1.3. Procedure --------------------------------------------- 38
8.1.4. Removing Solder From Between Pins --------- 38
8.2. How to Replace the LLP (Leadless Leadframe
Package) IC and IC ground plate -------------------- 39
8.2.1. Preparation-------------------------------------------- 39
8.2.2. Caution------------------------------------------------- 39
8.2.3. How to Remove the IC ----------------------------- 39
8.2.4. How to Install the IC -------------------------------- 39
8.2.5. How to Remove a Solder Bridge (Doesn't
8.2.2. Caution------------------------------------------------- 39
8.2.3. How to Remove the IC ----------------------------- 39
8.2.4. How to Install the IC -------------------------------- 39
8.2.5. How to Remove a Solder Bridge (Doesn't
apply to IC ground plate.) ------------------------- 40
9 Schematic Diagram
-------------------------------------------- 41
9.1. LCOT4------------------------------------------------------ 41
9.2. SLC8 -------------------------------------------------------- 44
9.3. DPH2 ------------------------------------------------------- 47
9.2. SLC8 -------------------------------------------------------- 44
9.3. DPH2 ------------------------------------------------------- 47
10 Printed Circuit Board
------------------------------------------ 49
10.1. LCOT4------------------------------------------------------ 49
10.2. SLC8 -------------------------------------------------------- 50
10.3. DPH2 ------------------------------------------------------- 51
10.2. SLC8 -------------------------------------------------------- 50
10.3. DPH2 ------------------------------------------------------- 51
11 Appendix Information of Schematic Diagram
-------- 52
12 Exploded View and Replacement Parts List
----------- 53
12.1. Cabinet and Electric Parts----------------------------- 53
12.2. Accessories and Packing Materials----------------- 54
12.3. Replacement Parts List -------------------------------- 55
12.2. Accessories and Packing Materials----------------- 54
12.3. Replacement Parts List -------------------------------- 55
12.3.1. Cabinet and Electrical Parts --------------------- 55
12.3.2. Accessories and Packing Materials ------------ 55
12.3.3. Main Board Parts ----------------------------------- 55
12.3.2. Accessories and Packing Materials ------------ 55
12.3.3. Main Board Parts ----------------------------------- 55
13 History
-------------------------------------------------------------- 71
Model No.
Destination
KX-HT82480X/82470X/82460X
Asia, Latin America, Middle East, Africa, Europe
KX-HT82480SX/82470SX/82460SX
India
KX-HT82480BR
Brazil
KX-HT82470ML
Malaysia
3
KX-HT82480/82470/82460 Series
1 Safety Precautions
1. Before servicing, unplug the AC power cord to prevent an electric shock.
2. When replacing parts, use only the manufacturer's recommended components.
3. Check the condition of the power cord. Replace if wear or damage is evident.
4. After servicing, be sure to restore the lead dress, insulation barriers, insulation papers, shields, etc.
5. Before returning the serviced equipment to the customer, be sure to perform the following insulation resistance test to prevent
2. When replacing parts, use only the manufacturer's recommended components.
3. Check the condition of the power cord. Replace if wear or damage is evident.
4. After servicing, be sure to restore the lead dress, insulation barriers, insulation papers, shields, etc.
5. Before returning the serviced equipment to the customer, be sure to perform the following insulation resistance test to prevent
the customer from being exposed to shock hazards.
1.1.
For Service Technicians
• Repair service shall be provided in accordance with repair technology information such as service manual so as to prevent fires,
injury or electric shock, which can be caused by improper repair work.
1. When repair services are provided, neither the products nor their parts or members shall be remodeled.
2. If a lead wire assembly is supplied as a repair part, the lead wire assembly shall be replaced.
3. FASTON terminals shall be plugged straight in and unplugged straight out.
2. If a lead wire assembly is supplied as a repair part, the lead wire assembly shall be replaced.
3. FASTON terminals shall be plugged straight in and unplugged straight out.
• ICs and LSIs are vulnerable to static electricity.
When repairing, the following precautions will help prevent recurring malfunctions.
1. Cover plastic parts boxes with aluminum foil.
2. Ground the soldering irons.
3. Use a conductive mat on worktable.
4. Do not grasp IC or LSI pins with bare fingers.
2. Ground the soldering irons.
3. Use a conductive mat on worktable.
4. Do not grasp IC or LSI pins with bare fingers.
4
KX-HT82480/82470/82460 Series
1.2.
Insulation Resistance Test
1. Unplug the power cord and short the two prongs of the plug with a jumper wire.
2. Turn on the power switch.
3. Measure the resistance value with ohmmeter between the jumpered AC plug and each exposed metal cabinet part, such as
2. Turn on the power switch.
3. Measure the resistance value with ohmmeter between the jumpered AC plug and each exposed metal cabinet part, such as
screw threads, control shafts, handle brackets, etc.
Note:
Note:
Some exposed parts may be isolated from the chassis by design. These will read infinity.
4. If the measurement is outside the specified limits, there is a possibility of shock hazard. The equipment should be repaired
and rechecked before it is returned to the customer.