Panasonic KX-TCD296RUT / KX-TCA128RUT Service Manual ▷ View online
24.2. Introduction
70
24.3. EEPROM contents
70
25 HOW TO REPLACE THE FLAT PACKAGE IC
73
25.1. Preparation
73
25.2. How to Remove the IC
73
25.3. How to Install the IC
74
25.4. How to Remove a Solder Bridge
74
26 CABINET AND ELECTRICAL PARTS (BASE UNIT)
75
27 CABINET AND ELECTRICAL PARTS (HANDSET)
76
28 CABINET AND ELECTRICAL PARTS (CHARGER UNIT)
77
29 ACCESSORIES AND PACKING MATERIALS
78
29.1. KX-TCD296RUT
78
29.2. KX-TCA128RUT
79
30 TERMINAL GUIDE OF THE ICs, TRANSISTORS AND DIODES
80
30.1. Base Unit
80
30.2. Handset
80
30.3. Charger Unit
80
31 REPLACEMENT PARTS LIST
81
31.1. Base Unit
81
31.2. Handset
83
31.3. Charger Unit
85
31.4. Accessories and Packing Materials
85
31.5. Fixtures and Tools
85
32 FOR SCHEMATIC DIAGRAM
86
32.1. Base Unit (SCHEMATIC DIAGRAM (BASE UNIT_MAIN
(Baseband)))
86
32.2. Handset (SCHEMATIC DIAGRAM (HANDSET_MAIN)) 86
32.3. Charger Unit (SCHEMATIC DIAGRAM (CHARGER UNIT))
86
33 SCHEMATIC DIAGRAM (BASE UNIT_MAIN (Baseband))
87
34 SCHEMATIC DIAGRAM(BASE UNIT_MAIN (Line Interface)) 88
35 SCHEMATIC DIAGRAM (BASE UNIT_RF PART)
89
36 SCHEMATIC DIAGRAM (HANDSET_MAIN)
90
37 SCHEMATIC DIAGRAM (HANDSET_RF PART)
91
38 SCHEMATIC DIAGRAM (CHARGER UNIT)
92
39 CIRCUIT BOARD (BASE UNIT_MAIN)
93
39.1. Component View
93
39.2. Flow Solder Side View
94
40 CIRCUIT BOARD (BASE UNIT_OPERATION)
95
40.1. Component View
95
40.2. Flow Solder Side View
96
41 CIRCUIT BOARD (HANDSET)
97
41.1. Component View
97
41.2. Flow Solder Side View
98
42 CIRCUIT BOARD (CHARGER UNIT)
99
42.1. Component View
99
42.2. Flow Solder Side View
99
3
KX-TCD296RUT / KX-TCA128RUT
1 ABOUT LEAD FREE SOLDER (PbF: Pb free)
Note:
In the information below, Pb, the symbol for lead in the periodic table of elements, will refer to standard solder or solder that
contains lead.
contains lead.
We will use PbF solder when discussing the lead free solder used in our manufacturing process which is made from Tin (Sn),
Silver (Ag), and Copper (Cu).
Silver (Ag), and Copper (Cu).
This model, and others like it, manufactured using lead free solder will have PbF stamped on the PCB. For service and repair
work we suggest using the same type of solder.
work we suggest using the same type of solder.
Caution
•
•
•
•
PbF solder has a melting point that is 50°F ~70°F (30°C ~ 40°C) higher than Pb solder. Please use a soldering iron with
temperature control and adjust it to 700°F ± 20°F (370°C ± 10°C).
temperature control and adjust it to 700°F ± 20°F (370°C ± 10°C).
•
•
•
•
Exercise care while using higher temperature soldering irons.:
Do not heat the PCB for too long time in order to prevent solder splash or damage to the PCB.
•
•
•
•
PbF solder will tend to splash if it is heated much higher than its melting point, approximately 1100°F (600°C).
•
•
•
•
When applying PbF solder to double layered boards, please check the component side for excess which may flow onto the
opposite side (See the figure below).
opposite side (See the figure below).
1.1. Suggested PbF Solder
There are several types of PbF solder available commercially. While this product is manufactured using Tin, Silver, and Copper
(Sn+Ag+Cu), you can also use Tin and Copper (Sn+Cu) or Tin, Zinc, and Bismuth (Sn+Zn+Bi). Please check the
manufacturer’s specific instructions for the melting points of their products and any precautions for using their product with other
materials.
(Sn+Ag+Cu), you can also use Tin and Copper (Sn+Cu) or Tin, Zinc, and Bismuth (Sn+Zn+Bi). Please check the
manufacturer’s specific instructions for the melting points of their products and any precautions for using their product with other
materials.
The following lead free (PbF) solder wire sizes are recommended for service of this product: 0.3mm, 0.6mm and 1.0mm.
4
KX-TCD296RUT / KX-TCA128RUT
1.2. How to recognize that Pb Free solder is used
(Example: Handset P.C.B.)
IC1
IC3
PbF
CN6
CN4
Marked
(Component View)
Note:
The location of the “PbF” mark is subject to change without notice.
2 FOR SERVICE TECHNICIANS
ICs and LSIs are vulnerable to static electricity.
When repairing, the following precautions will help prevent recurring malfunctions.
1. Cover the plastic parts boxes with aluminum foil and ground them.
2. Ground the soldering irons.
3. Use a conductive mat on the worktable.
4. Do not touch IC or LSI pins with bare fingers.
3 CAUTION
1. Danger of explosion if battery is incorrectly replaced.
2. Replace only with the same or equivalent type recommended by the manufacturer.
3. Dispose of used batteries according to the manufacture’s Instructions.
5
KX-TCD296RUT / KX-TCA128RUT
4 OPERATING INSTRUCTIONS
4.1. Battery
4.1.1. Battery Installation
6
KX-TCD296RUT / KX-TCA128RUT
