Panasonic KX-TG2344B User manual

© 2004 Panasonic Communications Co., Ltd. All
rights reserved. Unauthorized copying and
distribution is a violation of law.
KX-TG2344B
KX-TGA234B
2.4GHz Multi-Handset Digital Cordless
Phone
Black Version
(for U.S.A.)
Telephone Equipment
ORDER NO. KM40401327C1
F12

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 BATTERY 8
2.1. Standard Battery Life 8
2.2. Battery Replacement 9
3 LOCATION OF CONTROLS 10
3.1. Base unit 10
3.2. Handset 11
3.3. Charger Unit 12
4 DISPLAYS 13
4.1. Base Unit Display 13
4.2. Troubleshooting (Handset LCD) 14
5 SETTINGS 16
5.1. Connections 16
5.2. Connecting an Optional Headset 17
5.3. Function Menu Table 18
5.4. Date and Time 19
5.5. Display Language 20
5.6. Dialing Mode 20
5.7. Line Mode 21
5.8. Voice Enhancer Technology 21
5.9. Ringer Tone 22
5.10. Direct Commands 23
6 OPERATION 25
6.1. Answering System 25
6.2. For Call Waiting Service Users 29
6.3. Using the PAUSE Key 29
6.4. FLASH Button 30
6.5. Remote Operation from a Touch Tone Phone 31
6.6. Phone Book 34
7 TROUBLESHOOTING 39
8 DISASSEMBLY INSTRUCTIONS 43
8.1. Base Unit 43
8.2. Handset 44
8.3. Charger Unit 45
9 ASSEMBLY INSTRUCTIONS 46
9.1. Fix the LCD to P.C. Board (Handset) 46
NOte:
Because CONTENTS 2 to 7 are the extracts from the Operating Instructions of this model, they are subject to change without
notice. Please refer to the original Operating Instructions for further information.
CONTENTS Page Page
2
KX-TG2344B / KX-TGA234B

10 TROUBLESHOOTING GUIDE 47
10.1. Check Power 48
10.2. Error Message Table 48
10.3. Check Record 49
10.4. Check Playback 50
10.5. Check Battery Charge 50
10.6. Check Link 51
10.7. Check the RF Part 52
10.8. Check Handset Transmission 56
10.9. Check Handset Reception 56
10.10. Check Caller ID 56
11 TEST MODE 57
11.1. Test Mode Flow Chart for Base Unit 57
11.2. Test Mode Flow Chart for Handset 60
11.3. X801 (Base Unit), X201 (Handset) Check 64
11.4. Adjustment Battery Low Detector Voltage (Handset) 64
11.5. Base Unit Reference Drawing 65
11.6. Handset Reference Drawing 66
11.7. FREQUENCY TABLE 67
11.8. How to Clear User Setting 68
12 DESCRIPTION 69
12.1. Frequency 69
12.2. FHSS (Frequency Hopping Spread Spectrum) 69
12.3. Signal Flowchart in the Whole System 71
13 EXPLANATION OF LINK DATA COMMUNICATION 72
13.1. Calling 72
13.2. To Terminate Communication 72
13.3. Ringing 72
14 BLOCK DIAGRAM (Base Unit) 73
15 CIRCUIT OPERATION (Base Unit) 74
15.1. DSP (Digital Speech/Signal Processing: IC501) 74
15.2. Flash Memory (IC701) 75
15.3. Power Supply Circuit 76
15.4. Reset Circuit 78
15.5. Locator/Intercom Mode 79
15.6. Telephone Line Interface 79
15.7. Auto Disconnect Circuit 80
15.8. Parallel Connection Detect Circuit 81
15.9. Calling Line Identification (Caller ID)/Call Waiting Caller ID
82
16 BLOCK DIAGRAM (Handset) 84
17 CIRCUIT OPERATION (Handset) 85
17.1. Construction 85
17.2. Power Supply Circuit 86
17.3. Charge Circuit 87
17.4. Ringer and Handset SP-Phone 87
17.5. Sending Signal 88
17.6. Reception Signal 88
18 CIRCUIT OPERATION (CHARGER UNIT) 89
19 SIGNAL ROUTE 90
20 CPU DATA (Base Unit) 91
20.1. IC501 91
21 CPU DATA (Handset) 92
21.1. IC201 92
22 EXPLANATION OF IC TERMINALS (RF Unit) 93
22.1. IC901 93
23 HOW TO REPLACE A FLAT PACKAGE IC 94
23.1. Preparation 94
23.2. Procedure 94
23.3. Removing Solder from Between Pins 94
24 CABINET AND ELECTRICAL PARTS (Base Unit) 95
25 CABINET AND ELECTRICAL PARTS (Handset) 96
26 CABINET AND ELECTRICAL PARTS (Charger Unit) 97
27 ACCESSORIES AND PACKING MATERIALS 98
28 TERMINAL GUIDE OF THE IC´S, TRANSISTORS AND DIODES
99
28.1. Base Unit 99
28.2. Handset 99
28.3. Charger Unit 100
29 REPLACEMENT PARTS LIST 101
29.1. Base Unit 101
29.2. Handset 103
29.3. Charger Unit 105
29.4. Accessories and Pack,ing Materials 106
30 FOR SCHEMATIC DIAGRAM 107
30.1. Base Unit (SCHEMATIC DIAGRAM (Base Unit)) 107
30.2. Handset (SCHEMATIC DIAGRAM (Handset)) 107
30.3. Charger Unit (SCHEMATIC DIAGRAM (Charger Unit)) 107
31 SCHEMATIC DIAGRAM (Base Unit) 108
32 SCHEMATIC DIAGRAM (Handset) 110
33 SCHEMATIC DIAGRAM (RF PART) 112
33.1. Base Unit 112
33.2. Handset 113
34 SCHEMATIC DIAGRAM (Charger Unit) 114
35 CIRCUIT BOARD (BASE UNIT) 115
35.1. Main 115
35.2. Operation 117
36 CIRCUIT BOARD (Handset) 119
36.1. Component View 119
36.2. Flow Solder Side View 120
37 CIRCUIT BOARD (Charger Unit) 121
37.1. Component View 121
37.2. Flow Solder Side View 122
3
KX-TG2344B / KX-TGA234B

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 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 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-TG2344B / KX-TGA234B

1.2. How to recognize that Pb Free solder is used
1.2.1. Base Unit PCB
1.2.1.1. Main
PbF
IC701
IC601
IC501
IC521
IC901
Marked
(Component View)
IC301
IC201
IC300
PbF
Marked
(Flow Solder Side View)
Note:
The location of the “PbF“ mark is subject to change without notice.
5
KX-TG2344B / KX-TGA234B

1.2.1.2. Operation
MIC
PbF
Marked
(Flow Solder Side View)
Note:
The location of the “PbF“mark is subject to change without notice.
1.2.2. Cordless Handset PCB
IC901 IC204
IC201
IC202
IC203
PbF
Marked
(Component View)
Note:
The location of the “PbF“mark is subject to change without notice.
6
KX-TG2344B / KX-TGA234B

1.2.3. Charger Unit
IC1
PbF
CN1
Marked
(Component View)
Note:
The location of the “PbF”mark is subject to change without notice.
7
KX-TG2344B / KX-TGA234B

2 BATTERY
2.1. Standard Battery Life
2.1.1. Battery Charge
2.1.2. Battery Strength
2.1.3. 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.
8
KX-TG2344B / KX-TGA234B

2.1.4. Battery Information
2.2. Battery Replacement
9
KX-TG2344B / KX-TGA234B

3 LOCATION OF CONTROLS
3.1. Base unit
10
KX-TG2344B / KX-TGA234B

3.2. Handset
11
KX-TG2344B / KX-TGA234B

3.3. Charger Unit
12
KX-TG2344B / KX-TGA234B

4 DISPLAYS
4.1. Base Unit Display
13
KX-TG2344B / KX-TGA234B

4.2. Troubleshooting (Handset LCD)
The following will be displayed when the unit needs your attention.
14
KX-TG2344B / KX-TGA234B

15
KX-TG2344B / KX-TGA234B

5 SETTINGS
5.1. Connections
5.1.1. Base Unit
5.1.2. Charger Unit
16
KX-TG2344B / KX-TGA234B

5.2. Connecting an Optional Headset
17
KX-TG2344B / KX-TGA234B

5.3. Function Menu Table
18
KX-TG2344B / KX-TGA234B

5.4. Date and Time
19
KX-TG2344B / KX-TGA234B

5.5. Display Language
5.6. Dialing Mode
20
KX-TG2344B / KX-TGA234B