Read Panasonic KX-TG2238CG Service Manual online
KX-TG2238CS
2.4GHz Digital Cordless Phone
Silver Version
(for Canada)
(for Canada)
Telephone Equipment
ORDER NO. KM40304070C1
F1
1 ABOUT LEAD FREE SOLDER (PbF: Pb free)
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1.1. Suggested PbF Solder
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1.2. Howto recognize that Pb Free solder is used
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2 FOR SERVICE TECHNICIANS
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3 CAUTION
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4 BATTERY
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4.1. Installing the Battery in the Handset
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4.2. Battery Charge
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4.3. Battery Recharge
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4.4. Battery Strength
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4.5. Battery Replacement
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4.6. Battery information
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5 LOCATION OF CONTROLS
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5.1. Base Unit
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5.2. Handset
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6 DISPLAY
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6.1. Troubleshooting
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7 SETTINGS
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7.1. Connections
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7.2. Selecting the Display and Voice Guidance Language
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7.3. Dialing Mode (Handset)
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7.4. Direct Commands
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8 OPERATIONS
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8.1. Making Calls
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8.2. Answering Calls
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8.3. FLASH Button
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8.4. Phone Book (Handset)
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9 DISASSEMBLY INSTRUCTIONS
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10 ASSEMBLY INSTRUCTIONS
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10.1. Fix the LCD to P.C. Board (Handset)
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10.2. Connect the Small P.C.Board to Main P.C.Board
(Handset)
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11 TROUBLESHOOTING GUIDE
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11.1. Check Power
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11.2. Check Sp-phone Transmission
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11.3. Check Sp-phone Reception
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11.4. Check Battery Charge
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11.5. Check Link
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11.6. Check the RF Unit
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11.7. Check Handset Transmission
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11.8. Check Handset Reception
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11.9. Check Caller ID
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12 TEST MODE
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12.1. Test mode flowchart for Base Unit
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12.2. Test mode flowchart for Handset
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12.3. X201 Check
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12.4. Adjustment Battery LowDetector Voltage
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12.5. Base Unit Reference Drawing
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12.6. Handset Reference Drawing
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12.7. Frequency Table
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13 DESCRIPTION
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13.1. Frequency
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13.2. Time Division Duplex (TDD) operation
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13.3. Signal Flowchart in the Whole System
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14 EXPLANATION OF BBIC (Base Band IC) DATA
COMMUNICATION
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14.1. Calling
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14.2. To Terminate Communication
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14.3. Ringing
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14.4. Ports for Transmitting and Receiving of Data
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15 BLOCK DIAGRAM (BASE UNIT)
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16 CIRCUIT OPERATION (BASE UNIT)
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16.1. DSP (Digital Speech/Signal Processing: IC201)
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16.2. Flash Memory (IC300)
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16.3. Power Supply Circuit
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16.4. Reset Circuit
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16.5. Locator/Intercom Mode
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16.6. Telephone Line Interface
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16.7. Auto Disconnect Circuit
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16.8. Parallel Connection Detect Circuit
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16.9. Calling Line Identification (Caller ID)/Call Waiting Caller ID
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17 BLOCK DIAGRAM (HANDSET)
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18 CIRCUIT OPERATION (HANDSET)
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18.1. Construction
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18.2. Power Supply Circuit
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18.3. Charge Circuit
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18.4. Ringer and Handset SP-Phone
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18.5. Sending Signal
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18.6. Reception Signal
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18.7. Small PCB
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19 SIGNAL ROUTE
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20 CPU DATA (BASE UNIT)
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20.1. IC201
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CONTENTS
Page
Page
2
KX-TG2238CS
21 CPU DATA (HANDSET)
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21.1. IC201
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22 EXPLANATION OF RF UNIT TERMINALS
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22.1. IC801
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23 HOW TO REPLACE A FLAT PACKAGE IC
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23.1. Preparation
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23.2. Procedure
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23.3. Removing Solder from Between Pins
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24 CABINET AND ELECTRICAL PARTS (BASE UNIT)
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25 CABINET AND ELECTRICAL PARTS (HANDSET)
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26 ACCESSORIES AND PACKING MATERIALS
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27 TERMINAL GUIDE OF THE ICs, TRANSISTORS AND DIODES
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27.1. Base Unit
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27.2. Handset
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28 REPLACEMENT PARTS LIST
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28.1. Base Unit
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28.2. Handset
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28.3. Accessories and Packing Materials
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29 FOR SCHEMATIC DIAGRAM
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29.1. Base Unit (SCHEMATIC DIAGRAM (BASE UNIT))
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29.2. Handset (SCHEMATIC DIAGRAM (HANDSET))
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30 SCHEMATIC DIAGRAM (BASE UNIT)
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30.1. Main
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30.2. Operation
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31 SCHEMATIC DIAGRAM (HANDSET)
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32 CIRCUIT BOARD (BASE UNIT)
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32.1. Main
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32.2. Operation
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33 CIRCUIT BOARD (HANDSET)
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33.1. Main
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KX-TG2238CS
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.
We will use PbF when discussing the lead free solder used in our manufacturing process which is made from Tin (Sn), 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 although, with some precautions, standard Pb solder can also be used.
contains lead.
We will use PbF when discussing the lead free solder used in our manufacturing process which is made from Tin (Sn), 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 although, with some precautions, standard Pb solder can also be used.
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). In case of using high temperature soldering iron, please
be careful not to heat too long.
temperature control and adjust it to 700°F ± 20°F (370°C ± 10°C). In case of using high temperature soldering iron, please
be careful not to heat too long.
·
PbF solder will tend to splash if it is heated much higher than its melting point, approximately 1100°F, (600°C).
·
If you must use Pb solder on a PCB manufactured using PbF solder, remove as much of the original PbF solder as possible
and be sure that any remaining is melted prior to applying the Pb solder.
and be sure that any remaining is melted prior to applying the Pb solder.
·
When applying PbF solder to double layered boards, please check the component side for excess which may flow onto the
opposite side (See figure, below).
opposite side (See 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 manufac
turers 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.
(Sn+Ag+Cu), you can also use Tin and Copper, (Sn+Cu), or Tin, Zinc, and Bismuth, (Sn+Zn+Bi). Please check the manufac
turers 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.
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KX-TG2238CS