Panasonic KX-TCD400RUB User manual

©2003 Panasonic Communications Co., Ltd. All
rights reserved. Unauthorized copying and
distribution is a violation of la .
KX-TCD400RUB
KX-TCD400RUC
KX-TCD400RUF
KX-A140RUB
KX-A140RUC
KX-A140RUF
Digital Cordless Phone
Black Version
Dark Blue Version
Light Purple Version
(for Russia)
Telephone Equipment
ORDER NO. KM40306103C3

1 ABOUT LEAD FREE SOLDER (PbF: Pb free) 4
1.1. Suggested PbF Solder 4
1.2. Ho to recognize that Pb Free solder is used 5
2 FOR SERVICE TECHNICIANS 7
3 CAUTION 7
4 BATTERY
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 BAR On/Off (Call Prohibition On/Off) 16
6.9. Selecting the Display Language 16
6.10. Select Dialling Mode (Tone/Pulse) 16
6.11. Select Flash Timing 17
6.12. Automatic Route Selection 17
6.13. Summary of Programmable Functions 19
7 DISPLAY 19
7.1. Handset Display 19
7.2. Before Requesting Help (Troubleshooting) 20
OPERATIONS 21
8.1. Po er On/Off 21
8.2. Making a Call 21
8.3. Ans ering a Call 21
8.4. Setting the Clock/Date 21
8.5. Phonebook 22
9 DISASSEMBLY INSTRUCTIONS 25
9.1. Base Unit 25
9.2. Handset 26
10 ASSEMBLY INSTRUCTIONS 27
10.1. Warning When Constructing the Base Unit 27
11 TROUBLESHOOTING GUIDE 2
11.1. Check Po er 29
11.2. Check Battery Charge 30
11.3. Check Link 31
11.4. Check Handset Transmission 33
11.5. Check Handset Reception 33
11.6. Bell Reception 34
12 CHECK PROCEDURE (BASE UNIT) 35
12.1. Preparation 35
12.2. PC Setting 35
13 CHECK PROCEDURE (HANDSET) 36
13.1. Preparation 36
13.2. PC Setting 36
14 ADJUSTMENTS (BASE UNIT) 37
14.1. Adjustment 37
14.2. Adjustment Standard (Base Unit) 40
15 ADJUSTMENTS (HANDSET) 42
15.1. Adjustment 42
15.2. Adjustment Standard (Handset) 45
16 RF SPECIFICATION 46
16.1. Base Unit 46
16.2. Handset 46
17 HOW TO CHECK THE HANDSET SPEAKER 46
1 FREQUENCY TABLE (MHz) 47
19 BLOCK DIAGRAM (BASE UNIT) 4
20 CIRCUIT OPERATION (BASE UNIT) 49
20.1. Outline 49
20.2. Po er Supply Circuit 50
20.3. Telephone Line Interface 51
20.4. Transmitter/Receiver 51
20.5. Pulse Dialing 51
21 BLOCK DIAGRAM (HANDSET) 52
22 CIRCUIT OPERATION (HANDSET) 53
22.1. Outline 53
22.2. Po er Supply Circuit/Reset Circuit 53
22.3. Charge Circuit 53
22.4. Battery Lo /Po er Do n Detector 53
23 SIGNAL ROUTE 54
24 CPU DATA (BASE UNIT) 55
24.1. IC2 (BBIC) 55
25 CPU DATA (HANDSET) 57
CONTENTS
Page Page
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KX-TCD400RUB / KX-TCD400RUC / KX-TCD400RUF / KX-A140RUB / KX-A140RUC / KX-A140RUF

25.1. IC1 (BBIC) 57
26 EEPROM LAYOUT (BASE UNIT) 59
26.1. Scope 59
26.2. Introduction 59
26.3. EEPROM Layout 59
27 EEPROM LAYOUT (HANDSET) 61
27.1. Scope 61
27.2. Introduction 61
27.3. EEPROM contents 61
2 HOW TO REPLACE FLAT PACKAGE IC 64
28.1. Preparation 64
28.2. Procedure 64
28.3. Modification Procedure of Bridge 64
29 CABINET AND ELECTRICAL PARTS LOCATION (BASE UNIT)
65
30 CABINET AND ELECTRICAL PARTS LOCATION (HANDSET)
66
31 ACCESSORIES AND PACKING MATERIALS 67
32 TERMINAL GUIDE OF THE ICs, TRANSISTORS AND DIODES
6
32.1. Base Unit 68
32.2. Handset 68
33 REPLACEMENT PARTS LIST 69
33.1. Base Unit 69
33.2. Handset 70
33.3. Accessories and Packing Materials 71
33.4. Fixtures and Tools 71
33.5. Memo 72
34 SCHEMATIC DIAGRAM (BASE UNIT) 73
35 SCHEMATIC DIAGRAM (HANDSET) 75
36 CIRCUIT BOARD (BASE UNIT) 77
36.1. Component Vie 77
36.2. Flo Solder Side Vie 78
37 CIRCUIT BOARD (HANDSET) 79
37.1. Component Vie 79
37.2. Flo Solder Side Vie 80
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KX-TCD400RUB / KX-TCD400RUC / KX-TCD400RUF / KX-A140RUB / KX-A140RUC / KX-A140RUF

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-TCD400RUB / KX-TCD400RUC / KX-TCD400RUF / KX-A140RUB / KX-A140RUC / KX-A140RUF

1.2. How to recognize that Pb Free solder is used
1.2.1. Base Unit PCB
4
1
5
8
PbF
128
18
IC3
IC2
IC1
11
64
1
16
17
32
49
48
33
Marked
(Component View)
TP89
TP188
TP91
TP1
TP97
TP50
TP45
TP40
TP5 1
2
4
6
5
TP90 TP101
TP2
TP3
TP39
TP187
GND VBACK SCL SDA +2.65V
TP82 TP84
CHARGE+
J105
J102
J104
J103
J101
CHARGE PbF
Marked
(Flow Solder Side View)
Note:
The locations of the PbF mark are subject to change without notice.
5
KX-TCD400RUB / KX-TCD400RUC / KX-TCD400RUF / KX-A140RUB / KX-A140RUC / KX-A140RUF

1.2.2. Handset PCB
Marked
PbF
IC1
IC2
100
80
5
8
4
1
50 51
30
31 111
18
1
28
IC3
(Component View)
Marked
1
PROG
PbF
BOOK
UP
POWER
CAN
DOWN
RIGHT
REDIAL
LEFT
1
2
3
6
5
7
0
#
R4
9
8
INT
MIC
TALK
36
CN2
(Flow Solder Side View)
Note:
The locations of the PbF mark are subject to change without notice.
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KX-TCD400RUB / KX-TCD400RUC / KX-TCD400RUF / KX-A140RUB / KX-A140RUC / KX-A140RUF

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-TCD400RUB / KX-TCD400RUC / KX-TCD400RUF / KX-A140RUB / KX-A140RUC / KX-A140RUF

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-TCD400RUB / KX-TCD400RUC / KX-TCD400RUF / KX-A140RUB / KX-A140RUC / KX-A140RUF

4.3. Battery ife
· 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, 2 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 will 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 P03P Ni-MH) or P03H Ni-Cd) batteries.
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KX-TCD400RUB / KX-TCD400RUC / KX-TCD400RUF / KX-A140RUB / KX-A140RUC / KX-A140RUF

5 LOCATION OF CONTROLS
5.1. Base Unit
5.2. Handset
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KX-TCD400RUB / KX-TCD400RUC / KX-TCD400RUF / KX-A140RUB / KX-A140RUC / KX-A140RUF