Panasonic KX-TG2220BXB User manual

© 2003 Panasonic Communications Co., Ltd. All
rights reserved. Unauthorized copying and
distribution is a violation of law.
KX-TG2220BXB
KX-TG2220BXF
KX-TG2220BXS
KX-TGA226BXB
KX-TGA226BXF
KX-TGA226BXS
2.4GHz Digital Cordless Phone
Black Version
Blue Version
Silver Version
(for Asia, Middle Near East and Other areas)
Telephone Equipment
ORDER NO. KM40309202C3

1 ABOUT LEAD FREE SOLDER (PbF: Pb free) 4
1.1. Suggested PbF Solder 4
1.2. How to recognize that Pb Free solder is used 5
2 FOR SERVICE TECHNICIANS 6
3 CAUTION 6
4 BATTERY 7
4.1. Installing the Battery in the Handset 7
4.2. Battery Charge 7
4.3. Battery Recharge 7
4.4. Battery Strength 8
4.5. Battery Replacement 8
4.6. Battery information 8
5 LOCATION OF CONTROLS 9
5.1. Base Unit 9
5.2. Handset 10
6 DISPLAY 11
6.1. Troubleshooting 11
7 SETTINGS 13
7.1. Connections 13
7.2. Dialing Mode 14
7.3. Line Mode (Handset) 14
7.4. Voice Enhancer Technology 15
7.5. Direct Commands 16
8 OPERATIONS 17
8.1. Making Calls 17
8.2. Answering Calls 19
8.3. FLASH Button 19
8.4. Dial Lock 20
8.5. Phone Book 21
9 DISASSEMBLY INSTRUCTIONS 25
10 ASSEMBLY INSTRUCTIONS 27
10.1. Fix the LCD to P.C. Board (Handset) 27
11 TROUBLESHOOTING GUIDE 28
11.1. Check Power 29
11.2. Check Battery Charge 30
11.3. Check Link 30
11.4. Check the RF Unit 31
11.5. Check Handset Transmission 36
11.6. Check Handset Reception 36
11.7. Check Caller ID 36
12 TEST MODE 37
12.1. Test mode flow chart for Base Unit 37
12.2. Test mode flow chart for Handset 38
12.3. X201 Check 39
12.4. Adjustment Battery Low Detector Voltage 39
12.5. Base Unit Reference Drawing 40
12.6. Handset Reference Drawing 41
12.7. Frequency Table 42
13 DESCRIPTION 43
13.1. Frequency 43
13.2. Time Division Duplex (TDD) operation 43
13.3. Signal Flowchart in the Whole System 44
14 EXPLANATION OF BBIC (Base Band IC) DATA
COMMUNICATION 45
14.1. Calling 45
14.2. To Terminate Communication 45
14.3. Ringing 45
14.4. Ports for Transmitting and Receiving of Data 45
15 BLOCK DIAGRAM (BASE UNIT) 46
16 CIRCUIT OPERATION (BASE UNIT) 47
16.1. DSP (Digital Speech/Signal Processing: IC201) 47
16.2. EEPROM (IC202) 47
16.3. Power Supply Circuit 48
16.4. Reset Circuit 49
16.5. Locator Mode 50
16.6. Telephone Line Interface 50
16.7. Auto Disconnect Circuit 51
16.8. Parallel Connection Detect Circuit 51
16.9. Calling Line Identification (Caller ID) 52
17 BLOCK DIAGRAM (HANDSET) 53
18 CIRCUIT OPERATION (HANDSET) 54
18.1. Construction 54
18.2. Power Supply Circuit 54
18.3. Reset Circuit 55
18.4. Charge Circuit 56
18.5. Ringer and Handset SP-Phone 56
18.6. Sending Signal 56
18.7. Reception Signal 57
19 SIGNAL ROUTE 58
20 CPU DATA (BASE UNIT) 59
20.1. IC201 59
21 CPU DATA (HANDSET) 60
21.1. IC201 60
22 EXPLANATION OF RF UNIT TERMINALS 61
22.1. IC801 61
23 HOW TO REPLACE A FLAT PACKAGE IC 62
CONTENTS
Page Page
2
KX-TG2220BXB / KX-TG2220BXF / KX-TG2220BXS / KX-TGA226BXB / KX-TGA226BXF / KX-TGA226BXS

23.1. Preparation 62
23.2. Procedure 62
23.3. Removing Solder from Between Pins 62
24 CABINET AND ELECTRICAL PARTS (BASE UNIT) 63
25 CABINET AND ELECTRICAL PARTS (HANDSET) 64
26 ACCESSORIES AND PACKING MATERIALS 65
27 TERMINAL GUIDE OF THE ICs, TRANSISTORS AND DIODES
66
27.1. Base Unit 66
27.2. Handset 66
28 REPLACEMENT PARTS LIST 67
28.1. Base Unit 67
28.2. Handset 69
28.3. Accessories and Packing Materials 71
29 FOR SCHEMATIC DIAGRAM 72
29.1. Base Unit (SCHEMATIC DIAGRAM (BASE UNIT)) 72
29.2. Handset (SCHEMATIC DIAGRAM (HANDSET)) 72
29.3. Memo 73
30 SCHEMATIC DIAGRAM (BASE UNIT) 74
30.1. Main 74
30.2. Operation 76
30.3. Memo 77
31 SCHEMATIC DIAGRAM (HANDSET) 78
32 CIRCUIT BOARD (BASE UNIT) 80
32.1. Main 80
32.2. Operation 82
33 CIRCUIT BOARD (HANDSET) 84
33.1. Component View 84
33.2. Flow Solder Side View 85
3
KX-TG2220BXB / KX-TG2220BXF / KX-TG2220BXS / KX-TGA226BXB / KX-TGA226BXF / KX-TGA226BXS

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 solder 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.
• ••
• 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.
• ••
• 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).
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
turer’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-TG2220BXB / KX-TG2220BXF / KX-TG2220BXS / KX-TGA226BXB / KX-TGA226BXF / KX-TGA226BXS

1.2.1. Base Unit
1.2. How to recognize that Pb Free solder is used
1.2.1.1. Main
18
1
1
30
PbF
IC201
CN101 CN100
30 51
50
1
Marked
(Component View)
Note:
The location of the “PbF“ mark is subject to change without notice.
1.2.1.2. Operation
LED900
LED903
LED902
LCD900
CN901
30 1
1
345678910
29 26 27
11
18 17 16 15
22 21 20 19
23 24 25 30
12 13 14
MIC
PbF
MICP MICM
R904
R910 R911
R901 R903 C900 C901 R902 R900
R906 R907 R905
C902
Marked
(Component View)
Note:
The location of the “PbF“ mark is subject to change without notice.
5
KX-TG2220BXB / KX-TG2220BXF / KX-TG2220BXS / KX-TGA226BXB / KX-TGA226BXF / KX-TGA226BXS

LCD900112
MSG1
REG
CHK
ANS1
ANS2
ERS STOP REP SKIP
DOWN
UP
ICON
PbF
MIC
MSG2
Marked
(Flow Solder Side View)
Note:
The location of the “PbF“ mark is subject to change without notice.
1.2.2. Handset
Marked
ANTANTG
PbF
IC201
(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.
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
Danger of explosion if battery is incorrectly replaced. Replace only with the same or equivalent type recommendenced by the
manufacturer.
Dispose of used batteries according to the manufacture’s Instructions.
6
KX-TG2220BXB / KX-TG2220BXF / KX-TG2220BXS / KX-TGA226BXB / KX-TGA226BXF / KX-TGA226BXS

4 BATTERY
4.1. Installing the Battery in the Handset
4.2. Battery Charge
4.3. Battery Recharge
Note for Service:
The battery strength may not be indicated correctly if the battery is disconnected and connected again, even after it is fully
charged.
In that case, by recharging the battery as mentioned above, you will get a correct indication of the battery strength.
7
KX-TG2220BXB / KX-TG2220BXF / KX-TG2220BXS / KX-TGA226BXB / KX-TGA226BXF / KX-TGA226BXS

4.4. Battery Strength
4.5. Battery Replacement
4.6. Battery information
8
KX-TG2220BXB / KX-TG2220BXF / KX-TG2220BXS / KX-TGA226BXB / KX-TGA226BXF / KX-TGA226BXS

5 LOCATION OF CONTROLS
5.1. Base Unit
9
KX-TG2220BXB / KX-TG2220BXF / KX-TG2220BXS / KX-TGA226BXB / KX-TGA226BXF / KX-TGA226BXS

5.2. Handset
10
KX-TG2220BXB / KX-TG2220BXF / KX-TG2220BXS / KX-TGA226BXB / KX-TGA226BXF / KX-TGA226BXS

6 DISPLAY
6.1. Troubleshooting
11
KX-TG2220BXB / KX-TG2220BXF / KX-TG2220BXS / KX-TGA226BXB / KX-TGA226BXF / KX-TGA226BXS

12
KX-TG2220BXB / KX-TG2220BXF / KX-TG2220BXS / KX-TGA226BXB / KX-TGA226BXF / KX-TGA226BXS

7 SETTINGS
7.1. Connections
13
KX-TG2220BXB / KX-TG2220BXF / KX-TG2220BXS / KX-TGA226BXB / KX-TGA226BXF / KX-TGA226BXS

7.2. Dialing Mode
7.3. Line Mode (Handset)
14
KX-TG2220BXB / KX-TG2220BXF / KX-TG2220BXS / KX-TGA226BXB / KX-TGA226BXF / KX-TGA226BXS

7.4. Voice Enhancer Technology
15
KX-TG2220BXB / KX-TG2220BXF / KX-TG2220BXS / KX-TGA226BXB / KX-TGA226BXF / KX-TGA226BXS

7.5. Direct Commands
Note:
*1: Refer to Voice Enhancer Technology (P.15).
16
KX-TG2220BXB / KX-TG2220BXF / KX-TG2220BXS / KX-TGA226BXB / KX-TGA226BXF / KX-TGA226BXS

8 OPERATIONS
8.1. Making Calls
17
KX-TG2220BXB / KX-TG2220BXF / KX-TG2220BXS / KX-TGA226BXB / KX-TGA226BXF / KX-TGA226BXS

18
KX-TG2220BXB / KX-TG2220BXF / KX-TG2220BXS / KX-TGA226BXB / KX-TGA226BXF / KX-TGA226BXS

8.2. Answering Calls
8.3. FLASH Button
19
KX-TG2220BXB / KX-TG2220BXF / KX-TG2220BXS / KX-TGA226BXB / KX-TGA226BXF / KX-TGA226BXS

8.4. Dial Lock
20
KX-TG2220BXB / KX-TG2220BXF / KX-TG2220BXS / KX-TGA226BXB / KX-TGA226BXF / KX-TGA226BXS