Panasonic KX-TCD450 Series User manual

©2003 Panasonic Communications Co., Ltd. All
rights reserved. Unauthorized copying and
distribution is a violation of law.
KX-TCD450RUM
KX-A145RUM
KX-TCD450RUT
KX-A145RUT
Digital Cordless Phone
Metalic Gray Version
Titanium Black Version
(for Russia)
Telephone Equipment
ORDER NO. KM40307133C3

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 7
3 CAUTION 7
4 BATTERY 8
4.1. Battery Installation 8
4.2. Battery Charge 8
4.3. Battery Life 9
4.4. Replacing the Batteries 9
5 LOCATION OF CONTROLS 10
5.1. Base Unit 10
5.2. Handset 10
6 SETTINGS 11
6.1. Connection 11
6.2. Symbols Used in This Service Manual 11
6.3. PIN Code 12
6.4. Reset 14
6.5. Key Lock 15
6.6. Recall Feature 15
6.7. Dialling Pause for PBX line/long distance service users
15
6.8. Call Restriction 16
6.9. Cancelling Call Restricted Handset(s) 16
6.10. Call BAR On/Off (Call Prohibition On/Off) 16
6.11. Selecting the Display Language 17
6.12. Select Dialling Mode (Tone/Pulse) 17
6.13. Select Flash Timing 17
6.14. Automatic Route Selection 18
6.15. Summary of Programmable Functions 19
7 DISPLAY 20
7.1. Handset Display 20
7.2. Before Requesting Help (Troubleshooting) 21
8 OPERATIONS 22
8.1. Power On/Off 22
8.2. Making a Call 22
8.3. Answering a Call 22
8.4. Setting the Clock/Date 22
8.5. Phonebook 23
9 DISASSEMBLY INSTRUCTIONS 31
9.1. Base Unit 31
9.2. Handset 32
9.3. Charger Unit 33
10 ASSEMBLY INSTRUCTIONS 34
10.1. Warning When Constructing the Base Unit 34
11 TROUBLESHOOTING GUIDE 35
11.1. Check Power 36
11.2. Check Battery Charge 37
11.3. Check Link 38
11.4. Check Handset Transmission 40
11.5. Check Handset Reception 40
11.6. Check Caller ID 40
11.7. Bell Reception 41
12 CHECK PROCEDURE (BASE UNIT) 42
12.1. Preparation 42
12.2. PC Setting 42
13 CHECK PROCEDURE (HANDSET) 43
13.1. Preparation 43
13.2. PC Setting 43
14 ADJUSTMENTS (BASE UNIT AND CHARGER UNIT) 44
14.1. Adjustment (Base Unit) 44
14.2. Adjustment Standard (Base Unit) 48
14.3. Adjustment (Charger Unit) 50
14.4. Adjustment Standard (Charger Unit) 50
15 ADJUSTMENTS (HANDSET) 51
15.1. Adjustment 51
15.2. Adjustment Standard (Handset) 54
16 RF SPECIFICATION 55
16.1. Base Unit 55
16.2. Handset 55
17 HOW TO CHECK THE HANDSET SPEAKER 55
18 FREQUENCY TABLE (MHz) 56
19 BLOCK DIAGRAM (BASE UNIT) 57
20 CIRCUIT OPERATION (BASE UNIT) 58
20.1. Outline 58
20.2. Power Supply Circuit 59
20.3. Telephone Line Interface 60
20.4. Transmitter/Receiver 60
20.5. Pulse Dialing 60
21 BLOCK DIAGRAM (HANDSET) 61
22 CIRCUIT OPERATION (HANDSET) 62
CONTENTS
Page Page
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KX-TCD450RUM / KX-A145RUM / KX-TCD450RUT / KX-A145RUT

22.1. Outline 62
22.2. Power Supply Circuit/Reset Circuit 62
22.3. Charge Circuit 62
22.4. Battery Low/Power Down Detector 62
22.5. Speakerphone and Headset Jack 62
23 CIRCUIT OPERATION (CHARGER UNIT) 63
23.1. Power Supply Circuit 63
24 SIGNAL ROUTE 64
25 CPU DATA (BASE UNIT) 65
25.1. IC2 (BBIC) 65
26 CPU DATA (HANDSET) 67
26.1. IC1 (BBIC) 67
27 EEPROM LAYOUT (BASE UNIT) 69
27.1. Scope 69
27.2. Introduction 69
27.3. EEPROM Layout 69
28 EEPROM LAYOUT (HANDSET) 72
28.1. Scope 72
28.2. Introduction 72
28.3. EEPROM contents 72
29 HOW TO REPLACE FLAT PACKAGE IC 75
29.1. Preparation 75
29.2. Procedure 75
29.3. Modification Procedure of Bridge 75
30 CABINET AND ELECTRICAL PARTS LOCATION (BASE UNIT)
76
31 CABINET AND ELECTRICAL PARTS LOCATION (HANDSET)
77
32 CABINET AND ELECTRICAL PARTS LOCATION (CHARGER
UNIT) 78
33 ACCESSORIES AND PACKING MATERIALS 79
33.1. KX-TCD450RUM/RUT 79
33.2. KX-A145RUM/RUT 80
34 TERMINAL GUIDE OF THE ICs, TRANSISTORS AND DIODES
81
34.1. Base Unit 81
34.2. Handset 81
34.3. Charger Unit 81
35 REPLACEMENT PARTS LIST 82
35.1. Base Unit 82
35.2. Handset 83
35.3. Charger Unit 85
35.4. Accessories and Packing Materials 85
35.5. Fixtures and Tools 85
36 FOR SCHEMATIC DIAGRAM 86
36.1. Base Unit (SCHEMATIC DIAGRAM (BASE UNIT)) 86
36.2. Handset (SCHEMATIC DIAGRAM (HANDSET)) 86
36.3. Memo 87
37 SCHEMATIC DIAGRAM (BASE UNIT) 88
38 SCHEMATIC DIAGRAM (HANDSET) 90
39 SCHEMATIC DIAGRAM (CHARGER UNIT) 92
40 CIRCUIT BOARD (BASE UNIT) 93
40.1. Component View 93
40.2. Flow Solder Side View 94
41 CIRCUIT BOARD (HANDSET) 95
41.1. Component View 95
41.2. Flow Solder Side View 96
42 CIRCUIT BOARD (CHARGER UNIT) 97
42.1. Component View 97
42.2. Flow Solder Side View 97
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KX-TCD450RUM / KX-A145RUM / KX-TCD450RUT / KX-A145RUT

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.
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KX-TCD450RUM / KX-A145RUM / KX-TCD450RUT / KX-A145RUT

1.2. How to recognize that Pb Free solder is used
1.2.1. Base Unit PCB
1
11
28
18
IC3
PbF
IC2
1
Marked
(Component View)
TP1
TP84
TP97
TP82
TP187
TP91
TP188
TP101
TP89
TP2
135
246
TP5 TP90
TP50
TP45
TP39
TP3
TP40
TP85
J101 J103 J104 J102 J105
PbF
+2.65V
SDA
SCL
GND
VBACK
CHARGE
CHARGE
Marked
(Flow Solder Side View)
Note:
The location of the “PbF“ mark is subject to change without notice.
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KX-TCD450RUM / KX-A145RUM / KX-TCD450RUT / KX-A145RUT

1.2.2. Handset PCB
IC1
100
75
76
25
51
1
16
17
32
1
IC2
PbF
18
11
128
IC10
Marked
(Component View)
PbF
LED11
PROG
REDIAL
BOOK
UP
POWER
CANCEL
DOWN
SP_
PHONE
RIGHT
LEFT
1
2
3
6
5
7
0
#
R4
9
8
LED13
INT
MIC
TALK
C43
C42
C64
R37
C40
C63 C39
R22
R23
R7
J5
LED12
LED14
LED17 LED3
LED2
LED1
Marked
(Flow Solder Side View)
Note:
The location of the “PbF“ mark is subject to change without notice.
1.2.3. Charger Unit PCB
PbF
D1
J1
Marked
PbF
R1 R2
TP4
TP1
TP2
TP3
Marked
(ComponentView) (Flow Solder SideView)
Note:
The location of the “PbF“ mark is subject to change without notice.
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KX-TCD450RUM / KX-A145RUM / KX-TCD450RUT / KX-A145RUT

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.
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KX-TCD450RUM / KX-A145RUM / KX-TCD450RUT / KX-A145RUT

4 BATTERY
4.1. Battery Installation
Please ensure the batteries are inserted as shown. part should be inserted first.
Close the cover as indicated by the arrow.
· When you replace the batteries, part should be removed first.
4.2. Battery Charge
At the time of shipment, the batteries are not charged. To charge, place the handset on the base unit.
Please charge the batteries for about 7 hours before initial use. During charging, the battery icon is as shown below.
The handset which power is off will be turned on automatically when it is placed on the base unit.
In normal use, the handset and the base unit should be powered on at all times.
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.
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KX-TCD450RUM / KX-A145RUM / KX-TCD450RUT / KX-A145RUT

4.3. Battery Life
· Battery life is dependent on use and conditions but in general when using fully charged Ni-MH batteries (700 mAh):
Talk time: 10hrs approx.
Standby time: 120hrs approx.
· When using Ni-Cd batteries (250 mAh):
Talk time: 4hrs approx.
Standby time: 40hrs approx.
(Times indicated are for peak performance)
· The batteries reach peak performance after several full charge/discharge cycles.
· The batteries cannot be overcharged unless they are repeatedly removed and replaced.
· If battery life is shortened then please check that battery and charge terminals are clean.
· For maximum battery life, it is recommended that the handset is not recharged until battery icon flashes .
4.4. Replacing the Batteries
If the icon flashes after a few telephone calls even when the handset batteries have been fully charged, both batteries
must be replaced.
Charge new batteries for approximately 7 hours before initial use.
(The telephone line cord must not be connected to the telephone socket at this time).
When replacing the batteries, ensure that the correct battery type is selected.
· To exit the operation, press any time.
· When Ni-Cd batteies are fitted with the setting in ,icon might disappear and stop charging
even if the handset is on the cradle.
· Do not use non-rechargeable batteries. If non-rechargeable batteries are fitted and start charging, it may cause the leakage
of the battery electrolyte.
Please use only Panasonic HHR-4EPT(Ni-MH) or P-4NPT(Ni-Cd) batteries.
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KX-TCD450RUM / KX-A145RUM / KX-TCD450RUT / KX-A145RUT

5 LOCATION OF CONTROLS
5.1. Base Unit
5.2. Handset
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KX-TCD450RUM / KX-A145RUM / KX-TCD450RUT / KX-A145RUT

6 SETTINGS
6.1. Connection
6.1.1. Base Unit
Plug in the AC adaptor and the telephone line cord in order 1,2,3,4.
The AC adaptor must remain connected at all times (It is normal for the adaptor to feel warm during use).
· Never install telephone wiring during a lightning storm.
6.1.2. Charger Unit
The AC adaptor must remain connected at all times (It is normal for the adaptor to feel warm during use).
6.2. Symbols Used in This Service Manual
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KX-TCD450RUM / KX-A145RUM / KX-TCD450RUT / KX-A145RUT

6.3. PIN Code
6.3.1. Base Unit
· To exit the operation, press any time.
For Service Hint:
* : If the current 4-digit PIN is forgotten, press and you will be able to enter new PIN.
6.3.2. Handset
· To exit the operation, press any time.
For Service Hint:
* : If the current 4-digit PIN is forgotten, press and you will be able to enter new PIN.
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KX-TCD450RUM / KX-A145RUM / KX-TCD450RUT / KX-A145RUT

6.3.3. Reset Base Unit PIN to Default (0000) -When There is NO Handset Registered-
6.3.3.1. Symptom
There is no way to reset base PIN when there is no handset registered to the base.
6.3.3.2. Thinkable Situation
· Customer may ask to reset base PIN because they forget it.
· Customer may bring only a base unit for repair and there is no handset registered to the base (Need to register another handset
to the base to confirm if the unit works properly after repair).
· When original handset has broken and customer purchased a new one, if customer forget base PIN, customer cannot register
the new handset and may ask to reset the PIN.
6.3.3.3. Remedy
<Preparation>
Refer to JIGs and PC (P.42).
<Connection>
1.Solder a pin or lead wire to GND, SDA, and SCLK on base PCB.
2.Plug in AC adaptor to the base.
3.Turn on the power to the JIG (9V).
4.Then connect the cable to each pins using clip.
As for the connection between JIG and PCB, see below photos.
Clip
GND
SDA
SCL
Base PCB
+2.65V
SDA
SCL
VBACK
GND
J105
J104
J103
J102 J101
<PC setting and how to reset base PIN to default (0000)>
1.Refer to PC Setting (P.42).
2.Next, execute <initbspin.bat> by typing "initbspin". The PC display will be shown as below.
Microsoft Windows 2000 [Version 5.00.2195]
(C) Copyright 1985-2000 Microsoft Corp.
C: >cd dect
C:
DECT>DOSKEY
C:
DECT>SET RTX_COM=1
C:
DECT>initbspin
C:
DECT>call wreeprom.bat 00 25 00
C:
DECT>call wreeprom.bat 00 26 00
C:
DECT>_
3.After that, turn off DC power supply (9V) to the jig, unplug AC adaptor, and remove pins on PCB.
Then close the cabinet. The base pin returns to the default (0000) and you can register a handset to the base using the base
PIN (0000).
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KX-TCD450RUM / KX-A145RUM / KX-TCD450RUT / KX-A145RUT

6.4. Reset
6.4.2. Handset
6.4.1. Base Unit
· To exit the operation, press any time.
· *1: The factory preset is 0000.
Base Unit Initial Settings
Function Initial Setting Remarks (selectable options)
Ringer Mode All Handsets All Handsets/Specific Handset No.
Number of Rings 3Up to 6 rings
Dialling Mode Tone Tone/Pulse
Pause Timing 3 seconds 3 seconds/5 seconds
Call Restricted Handsets All Clear Each Handset can be set indivisually.
Call Restriction Numbers All Clear Up to 10 numbers (up to 8 digits)
4-Digit Base Unit PIN 0000 -
Flash Timing 700 msec 100/700/200 msec
ARS Setting OFF ON/OFF
Carrier Code All Clear -
Area Code All Clear -
Relation of Area Code All Area Code to Carrier Code 1 1to5
You can reset all of the handset settings to their initial settings.
· To exit the operation, press any time.
· *1: The factory preset is 0000.
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KX-TCD450RUM / KX-A145RUM / KX-TCD450RUT / KX-A145RUT

Handset Initial Settings
Function Initial Setting Remarks (selectable options)
Time Alarm Mode OFF OFF/ON
Alarm Time Clear OFF/Once/Daily
Handset Ringer Volume 3 -
Handset External Ringer Pattern 120 patterns
Handset Internal Ringer Pattern 120 patterns
Handset Paging Tone Pattern 120 patterns
Handset Alarm Tone Pattern 120 patterns
Key Tone ON ON/OFF
Call Waiting Tone ON ON/OFF
Range Warning Alarm OFF OFF/ON
Battery Low Alarm ON ON/OFF
Standby Mode Display Base unit number Clock/OFF/Base No./Handset No.
Talk Mode Display Length of the Call Talk Time/Phone No.
Display Language English 10 languages
Call BAR OFF OFF/ON
Direct Call Mode OFF OFF/ON
Direct Call Number Clear Up to 24 digits
4-Digit Handset PIN 0000 -
Auto Talk OFF OFF/ON
Base Unit Access Automatic Base Unit Access Auto/Specific Base Unit No.
Redial Memory All Clear All Clear/Clear (Selected Number)
Handset Receiver Volume Medium Low/Medium/High
Walkie-Talkie Setting Group Common/Group
6.5. Key Lock
You can lock the handset dialling buttons. Only incoming calls are accepted while the key lock is on. The key lock is cancelled
if the handset is turned off.
When the key lock is on, emergency calls cannot be made until key lock is cancelled.
· is displayed (Refer to Handset Display (P.20)) and all dialling buttons are locked.
6.6. Recall Feature
RECALL is used to access special telephone services. Contact your Network provider for details. If your unit is connected to
a PBX, pressing RECALL allows you to access some features of your host PBX such as transferring an extension call.
6.7. Dialling Pause for PBX line/long distance service users
A dialling pause is used when a pause in the dialling of the phone number is necessary using a PBX or accessing a long
distance service.
For example, when 9 (line access number) is dialled followed by a pause to access an outside line through a PBX:
· Entering a pause prevents misdialling when you redial or dial a stored number.
· Pressing PAUSE once creates one pause. To extend the pause requirement time, press PAUSE accordingly.
*1 is displayed (Refer to Handset Display (P.20)) on the LCD.
*2 You can also press SPEAKERPHONE to make a call.
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KX-TCD450RUM / KX-A145RUM / KX-TCD450RUT / KX-A145RUT

6.8. Call Restriction
You can restrict selected handset(s) from dialling selected phone numbers. You can assign up to 10 call restriction numbers (up
to 8 digits). If you dial a restricted number, the call does not connect and restricted number flashes.
· To exit the operation, press any time.
· *1: The factory preset is 0000.
· *2: The selected handset number flashes.
6.9. Cancelling Call Restricted Handset(s)
· To exit the operation, press any time.
· *1: The factory preset is 0000.
· *2: The selected handset(s) will stop flashing.
6.10. Call BAR On/Off (Call Prohibition On/Off)
You cannot make any dialling if call BAR is on.
When call BAR is on, emergency calls cannot be made until call BAR is cancelled.
· To exit the operation, press any time.
· *1: The factory preset is 0000.
· *2: If is selected, is displayed (Refer to Handset Display (P.20)).
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KX-TCD450RUM / KX-A145RUM / KX-TCD450RUT / KX-A145RUT

6.11. Selecting the Display Language
· To exit the operation, press any time.
· *1 You can select one of 24 languages. If you set a language you cannot read, reset the handset to its initial settings.
Press MENU →DOWN →RIGHT →UP →RIGHT →4-digit Handset PIN →UP →OK
All handset setting will be reset to their initial settings, however, the Phonebook data will be saved.
6.12. Select Dialling Mode (Tone/Pulse)
You can change the dialling mode to tone or pulse depending upon your network service. If you have a touch tone service,
select tone. If you have rotary or pulse service, select pulse.
· To exit the operation, press any time.
· *1: The factory preset is 0000.
6.13. Select Flash Timing
You can select the flash timing, 100 msec (milli seconds), 700 msec, or 200 msec depending on your PBX requirements.
· To exit the operation, press any time.
· *1: The factory preset is 0000.
For Service Hint: Refer to Select Flash Timing (P.17)
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KX-TCD450RUM / KX-A145RUM / KX-TCD450RUT / KX-A145RUT

6.14. Automatic Route Selection
6.14.1. Relate the Area Code(s) to the Carrier Code(s)
After storing carrier code(s) and area code(s), you must relate the stored area code(s) to your chosen lower costing carrier
code. It is only necessary to relate area codes to carrier codes if more than one carrier code has been stored. If only one carrier
code has been stored, any area codes you store (up to 25) will automatically be dialled with that carrier code.
· To exit the operation, press any time.
· *1: The factory preset is 0000.
· *2 If you need more relating area codes to carrier codes, repeat the steps from 5.
6.14.2. Automatic Route Selection On/Off
· To exit the operation, press any time.
· *1: The factory preset is 0000.
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KX-TCD450RUM / KX-A145RUM / KX-TCD450RUT / KX-A145RUT

6.15. Summary of Programmable Functions
You can select and execute the following functions by pressing direct command as follows without programming.
These operations need to be done with the Handset near the base unit.
Press . Press or until the arrow points to , then press .
is displayed.*1
*1 If any key is not pressed over 60 seconds, the display will return to “Setting Base”.
*2 Refer to PIN Code (P.12) for more details.
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KX-TCD450RUM / KX-A145RUM / KX-TCD450RUT / KX-A145RUT

7 DISPLAY
7.1. Handset Display
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KX-TCD450RUM / KX-A145RUM / KX-TCD450RUT / KX-A145RUT