Panasonic KX-TCD220SLT User manual

©2005 Panasonic Communications Co., Ltd. All
rights reserved. Unauthorized copying and
distribution is a violation of law.
KX-TCD220SLT
KX-TCA122EXT
KX-TCA121EXT
Digital Cordless Answering System
Titanium Black Version
(for Switzerland)
Telephone Equipment
ORDER NO. KM40503650CE

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 5
3 CAUTION 5
4 BATTERY 6
4.1. Battery Installation 6
4.2. Battery Charge 6
4.3. Battery Life 7
4.4. Battery Replacement 7
5 LOCATION OF CONTROLS 8
5.1. Base Unit 8
5.2. Handset 8
6 SETTINGS 9
6.1. Connections 10
6.2. Guide to Settings 11
6.3. Ringer Volume 13
6.4. Night Mode 14
6.5. PIN Code 15
6.6. Reset 16
6.7. Key Lock 17
6.8. R Button to Use the Recall Feature 17
6.9. Pause Button for PBX/Long Distance Service Users 17
6.10. Setting Call Restriction 17
6.11. Turning Call BAR On/Off (Call Prohibition) 18
6.12. Changing the Display Language 18
6.13. Changing the Recall Time 18
6.14. ARS (Automatic Route Selection) 19
7 DISPLAY 20
7.1. Display Icons 20
7.2. Caller ID Display 20
8 OPERATIONS 21
8.1. Turning the Power On/Off 21
8.2. Setting the Date and Time 21
8.3. Redialling 21
8.4. Phonebook 22
8.5. Registering a Handset to a Base Unit 26
8.6. Selecting a Base Unit 27
9 SMS (Short Message Service) 28
9.1. Writing and Sending a New Message 28
9.2. Available Character Entries for SMS 29
9.3. Sending a Saved Message 30
9.4. Editing and Sending a Saved Message 30
9.5. Erasing Saved Messages 30
9.6. Receiving a Message 31
9.7. Reading a Received Message 31
9.8. Replying to a Message 31
9.9. Erasing Received Messages 31
9.10. Changing SMS Message Centre Numbers 32
9.11. Turning SMS On/Off 32
10 Answering System 33
10.1. Turning the Answering System On/Off 33
10.2. Greeting Message 33
10.3. Listening to Message 34
10.4. Using Direct Commands 35
10.5. Remote Operation 36
11 TROUBLESHOOTING 37
12 DISASSEMBLY INSTRUCTIONS 40
12.1. Base Unit 40
12.2. Handset 41
12.3. Charger Unit 42
13 HOW TO REPLACE THE HANDSET LCD 43
14 TROUBLESHOOTING FLOWCHART 44
14.1. Check Power 45
14.2. Check Battery Charge 46
14.3. Check Link 47
14.4. Check Handset Transmission 51
14.5. Check Handset Reception 51
14.6. Check Caller ID 51
14.7. Bell Reception 52
14.8. Check TAM Operation 52
15 TROUBLESHOOTING BY SYMPTOM (BASE UNIT AND
CHARGER UNIT) 53
15.1. Check Point (Base Unit) 53
Note:
Because CONTENTS 4 to 11 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
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KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT

15.2. The Setting Method of JIG (Base Unit) 57
15.3. Adjustment Standard (Base Unit) 58
15.4. Check Point (Charger Unit) 59
15.5. Adjustment Standard (Charger Unit) 59
16 TROUBLESHOOTING BY SYMPTOM (HANDSET) 60
16.1. Check Point (Handset) 60
16.2. Troubleshooting for Speakerphone 64
16.3. The Setting Method of JIG (Handset) 65
16.4. Adjustment Standard (Handset) 66
17 THINGS TO DO AFTER REPLACING IC 67
17.1. Base Unit 67
17.2. Handset 67
18 RF SPECIFICATION 68
18.1. Base Unit 68
18.2. Handset 68
19 HOW TO CHECK THE HANDSET SPEAKER OR RECEIVER 69
20 FREQUENCY TABLE (MHz) 69
21 BLOCK DIAGRAM (BASE UNIT) 70
22 CIRCUIT OPERATION (BASE UNIT) 71
22.1. Outline 71
22.2. Power Supply Circuit 72
22.3. Telephone Line Interface 73
22.4. Transmitter/Receiver 73
23 BLOCK DIAGRAM (HANDSET) 74
24 CIRCUIT OPERATION (HANDSET) 75
24.1. Outline 75
24.2. Power Supply Circuit/Reset Circuit 75
24.3. Charge Circuit 75
24.4. Battery Low/Power Down Detector 75
24.5. Speakerphone 75
25 CIRCUIT OPERATION (CHARGER UNIT) 76
25.1. Power Supply Circuit 76
26 SIGNAL ROUTE 77
27 CPU DATA (BASE UNIT) 79
27.1. IC8 (BBIC) 79
28 CPU DATA (HANDSET) 81
28.1. IC1 (BBIC) 81
29 ENGINEERING MODE 83
29.1. Base Unit 83
29.2. Handset 86
30 HOW TO REPLACE THE FLAT PACKAGE IC 88
30.1. PREPARATION 88
30.2. FLAT PACKAGE IC REMOVAL PROCEDURE 88
30.3. FLAT PACKAGE IC INSTALLATION PROCEDURE 89
30.4. BRIDGE MODIFICATION PROCEDURE 89
31 CABINET AND ELECTRICAL PARTS LOCATION (BASE UNIT)
90
32 CABINET AND ELECTRICAL PARTS LOCATION (HANDSET)
91
33 CABINET AND ELECTRICAL PARTS LOCATION (CHARGER
UNIT) 92
34 ACCESSORIES AND PACKING MATERIALS 93
34.1. KX-TCD220SLT 93
34.2. KX-TCA121EXT 94
35 TERMINAL GUIDE OF THE ICs, TRANSISTORS AND DIODES
95
35.1. Base Unit 95
35.2. Handset 95
35.3. Charger Unit 95
36 REPLACEMENT PARTS LIST 96
36.1. Base Unit 96
36.2. Handset 98
36.3. Charger Unit 99
36.4. Accessories and Packing Materials 99
36.5. Fixtures and Tools 100
37 FOR SCHEMATIC DIAGRAM 101
37.1. Base Unit (SCHEMATIC DIAGRAM (BASE UNIT)) 101
37.2. Handset (SCHEMATIC DIAGRAM (HANDSET)) 101
37.3. Charger Unit (SCHEMATIC DIAGRAM (CHARGER UNIT))
101
38 SCHEMATIC DIAGRAM (BASE UNIT) 102
39 SCHEMATIC DIAGRAM (HANDSET) 104
40 SCHEMATIC DIAGRAM (CHARGER UNIT) 106
41 CIRCUIT BOARD (BASE UNIT) 107
41.1. Component View 107
41.2. Flow Solder Side View 108
42 CIRCUIT BOARD (HANDSET) 109
42.1. Component View 109
42.2. Flow Solder Side View 110
43 CIRCUIT BOARD (CHARGER UNIT) 111
43.1. Component View 111
43.2. Flow Solder Side View 111
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KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT

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
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.
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KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT

(Example: Handset P.C.B.)
1.2. How to Recognize that Pb Free Solder is Used
C66
A201
ANT
R59
C54 C55
C45 R54
R55
C46 C47
R62
Q5 Q9
J3 TP22
CHG CHG
TP23
J2
UTX URX
J4
C58
C97
C102
C68 C37 C91
R85
C6
C19
R19
R82
C82
SP_TEST1
REV_TEST1
REV_TEST2
SP_TEST2
C60
C59
C123
C64
C61 C65 C44 C62
CLK
C63
D1
R93
C119
R6
R47 R46 R86
R25 R29
C10
C101
C107
C108
C111 C112
F1
J1
C3
R1
R83
R43 C98
L9
L7
L6
C95
C78 C79
VDD3
D7
D6
D9
Q8
D10
C40
R5
L5
L4
R74
C80
R36
C76
C16
C92
R80
C13
C83
C69 C70
C81
C86 C15
R35 R67 R66
C14 R34 C75
C38 C77
R61
R71
R40
R39
R64
D5
D8
D4
R60
JTAG
R63
VDD1 VDD2POWER
R91
C93
C41
C4
C94
C22
C72
R15
R57
R96
C116
C117
C122
C113
C24
R68
C100
C20 C7
R21R20
BAT GND
C57
C1
C53
CN6
C51
C50
C48C49
C67
A
17
26
10
1
C84
R75
PbF
IC1
IC3
IC2
X1
C21
R90
C18
C96
R92
R72
C99
C23
R87
R7
C114
R94
C120
C115
C71
R89
R88
C39
R26
C90
C103
R38
R37
C17
C109
C87
C12
L1
R12
R81
C118
C104
C5
C8
Q4
Q11
Q2
Q3
Q10
Q1
Q7
PQUP11278Z
1
1
1
8
8
4
4
5
5
20
80
61 60 41
21
40
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.
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KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT

4 BATTERY
4.1. Battery Installation
1.Insert the batteries negative ( ) terminal first.
2.Close the handset cover.
Note:
· Use only rechargeable Ni-MH batteries P03P (HHR-4EPT).
4.2. Battery Charge
Place the handset on the base unit for about 7 hours before initial use.
When charging, the battery icon is shown as follows. When the batteries are fully charged, remains on the display.
Note:
· It is normal for the handset to feel warm during charging.
· It takes 7 hours to fully charge the batteries, however, you can use the handset before the batteries are fully charged.
· Clean the charge contacts of the handset and base unit with a soft, dry cloth, otherwise the batteries may not charge
properly. Clean if the unit is exposed to grease, dust or high humidity.
· When flashes, recharge the handset batteries. will continue to flash until the batteries have been charged for at
least 15 minutes.
· If the handset is turned off, it will be turned on automatically when it is placed on the base unit.
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KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT

4.3. Battery Life
After your Panasonic batteries are fully charged, you can expect the following performance:
Ni-MH batteries (700 mAh)
Operation Operating Time
While in use (talking) 20 hours max.
While not in use (standby) 170 hours max.
Note:
· Actual battery performance depends on a combination of how often the handset is in use (talking) and how often it is not
in use (standby).
· Battery operating time may be shortened over time depending on usage conditions and ambient temperature.
4.4. Battery Replacement
If flashes even after the handset batteries have been charged for 7 hours, the batteries must be replaced.
Important:
· We recommend the use of Panasonic rechargeable Ni-MH batteries P03P (HHR-4EPT). If you install non-rechargeable
batteries and start charging, the batteries may leak electrolyte.
· Do not mix old and new batteries.
1.Press the notch on the handset cover firmly and slide it in the direction of the arrow.
2.Remove the old batteries positive ( ) terminal first and install the new ones.
Note for Service:
· You could use other rechargeable batteries on sale, but the unit is not guaranteed to work properly.
7
KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT

5 LOCATION OF CONTROLS
5.1. Base Unit
5.2. Handset
Note:
· Up to 3 menu items can be displayed at a time. To select a menu item not shown on the current page, scroll up or down
by pressing the navigator key, or , respectively.
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KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT

6 SETTINGS
Important Information
General
· Use only the AC adaptor included with this product.
· Do not connect the AC adaptor to any AC outlet other than a standard 220 - 240 V AC outlet.
· This product is unable to make calls when:
− − −
− The portable handset battery(ies) need recharging or have failed.
− − −
− There is a power failure.
− − −
− The key lock feature is turned on.
− − −
− The call bar feature is turned on (only phone numbers stored in the unit as emergency numbers can be called).
· Do not open the base unit or handset other than to replace the battery(ies).
· This product should not be used near emergency/intensive care medical equipment and should not be used by people with
pacemakers.
· Care should be taken that objects do not fall onto, and liquids are not spilled into, the unit. Do not subject this product to
excessive smoke, dust, mechanical vibration or shock.
Environment
· Do not use this product near water.
· This product should be kept away from heat sources such as radiators, cookers, etc. It should also not be placed in
rooms where the temperature is less than 5 °C or greater than 40 °C.
· The AC adaptor is used as the main disconnect device. Ensure that the AC outlet is installed near the unit and is easily
accessible.
Warning:
· To prevent the risk of electrical shock, do not expose this product to rain or any other type of moisture.
Location
· For maximum distance and noise-free operation, place your base unit:
− − −
− Away from electrical appliances such as TVs, radios, personal computers or other phones.
− − −
− In a convenient, high, and central location.
9
KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT

6.1. Connections
6.1.1. Base Unit
When the AC adaptor is connected, a short beep will be heard. If it is not heard, check the connections.
Important:
· Use only the AC adaptor PQLV19CEX and telephone line cord supplied with this unit.
Note:
· After connection, you must charge the batteries to make or answer calls.
· Never install telephone wiring during a lightning storm.
· The AC adaptor must remain connected at all times. (It is normal for the adaptor to feel warm during use.)
· The AC adaptor should be connected to a vertically oriented or floor-mounted AC outlet. Do not connect the AC adaptor to
a ceiling-mounted AC outlet, as the weight of the adaptor may cause it to become disconnected.
6.1.2. Charger Unit
Important:
· Use only the AC adaptor PQLV200CEX.
Note:
· The AC adaptor must remain connected at all times (It is normal for the adaptor to feel warm during use).
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KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT