Panasonic KX-TG4222CB User manual

© Panasonic System Networks Co., Ltd. 2013
Unauthorized copying and distribution is a violation
of law.
ORDER NO. KM41303666CE
F1
Telephone Equipment
Model No. KX-TG4222CB
KX-TG313CSK
KX-TGA421CB
KX-TGA421CN
Digital Cordless Answering System
B: Black Version
N: Champagne Gold Version
(for Canada)
(Handset)
KX-TGA421 KX-TG4221
(Base Unit)
Caller ID Compatible
(Charger Unit)
Model No
Base Unit Handset Charger Unit Expandable
KX-TG4222
1 (TG4221) 2 (TGA421) 1 Up to 6
KX-TG313SK
1 (TG4221) 3 (TGA421) 2 Up to 6
Configuration for each model

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KX-TG4222CB/KX-TG313CSK/KX-TGA421CB/KX-TGA421CN
WARNING
Thisservice information isdesigned for experienced repair techniciansonly and isnot designed for use by the general
public. It doesnot contain warningsor cautionsto advise non-technical individualsof potential dangersin attempting
to service aproduct. Productspowered by electricity should be serviced or repaired only by experienced professional
technicians. Any attempt to service or repair the product or productsdealt with in thisservice information by anyone
else could result in seriousinjury or death.
IMPORTANT SAFETY NOTICE
There are special components used in this equipment which are important for safety. These parts are marked by
in the Schematic Diagrams, Circuit Board Diagrams, Exploded Views and Replacement Parts List. It is essential that
these critical parts should be replaced with manufacturer’s specified parts to prevent shock, fire or other hazards.
Do not modify the original design without permission of manufacturer.
IMPORTANT INFORMATION ABOUT LEAD FREE, (PbF), SOLDERING
If lead free solder was used in the manufacture of this product, the printed circuit boards will be marked PbF.
Standard leaded, (Pb), solder can be used as usual on boards without the PbF mark.
When this mark does appear, please read and follow the special instructions described in this manual on the
use of PbF and how it might be permissible to use Pb solder during service and repair work.
LWhen you note the serial number, write down all 11 digits. The serial number may be found on the bottom of the unit.
LThe illustrations in this Service Manual may vary slightly from the actual product.

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KX-TG4222CB/KX-TG313CSK/KX-TGA421CB/KX-TGA421CN
TABLE OF CONTENTS
PAGE PAGE
1 Safety Precautions----------------------------------------------- 4
1.1. For Service Technicians --------------------------------- 4
2 Warning -------------------------------------------------------------- 4
2.1. Battery Caution--------------------------------------------- 4
2.2. About Lead Free Solder (PbF: Pb free)-------------- 5
2.2.1. Suggested PbF Solder ------------------------------ 5
2.3. Discarding of P. C. Board-------------------------------- 5
3 Specifications ----------------------------------------------------- 6
4 Location of Controls and Components ------------------- 7
5 Installation Instructions ---------------------------------------- 7
6 Operating Instructions------------------------------------------ 7
7 Schematic Diagram ---------------------------------------------- 9
7.1. For Schematic Diagram---------------------------------- 9
7.1.1. Base Unit (Schematic Diagram (Base
Unit_Main)) --------------------------------------------- 9
7.1.2. Handset (Schematic Diagram
(Handset_Main)) -------------------------------------- 9
7.2. Schematic Diagram (Base Unit_Main) --------------10
7.3. Schematic Diagram (Base Unit_Operation) -------12
7.4. Schematic Diagram (Handset_Main) ----------------14
8 Exploded View and Replacement Parts List -----------16
8.1. Replacement Parts List ---------------------------------16

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KX-TG4222CB/KX-TG313CSK/KX-TGA421CB/KX-TGA421CN
1 Safety Precautions
1.1. For Service Technicians
•Repair service shall be provided in accordance with repair technology information such as service manual so as to
prevent fires, injury or electric shock, which can be caused by improper repair work.
1. When repair services are provided, neither the products nor their parts or members shall be remodeled.
2. If a lead wire assembly is supplied as a repair part, the lead wire assembly shall be replaced.
3. FASTON terminals shall be plugged straight in and unplugged straight out.
•ICs and LSIs are vulnerable to static electricity.
When repairing, the following precautions will help prevent recurring malfunctions.
1. Cover plastic parts boxes with aluminum foil.
2. Ground the soldering irons.
3. Use a conductive mat on worktable.
4. Do not grasp IC or LSI pins with bare fingers.
2Warning
2.1. Battery Caution
Risk of explosion if battery is replaced by an incorrect type. Dispose of used batteries according to the instructions.
Attention:
A nickel metal hydride battery that is recyclable powers the product you have purchased.
Please call 1-800-8-BATTERY (1-800-822-8837) for information on how to recycle this battery.

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KX-TG4222CB/KX-TG313CSK/KX-TGA421CB/KX-TGA421CN
2.2. 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.
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).
• Exercise care while using higher temperature soldering irons.:
Do not heat the PCB for too long time in order to prevent solder splash or damage to the PCB.
• PbF solder will tend to splash if it is heated much higher than its melting point, approximately 1100 F (600 C).
• 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).
2.2.1. 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: 0.3 mm, 0.6 mm and 1.0 mm.
2.3. Discarding of P. C. Board
When discarding P. C. Board, delete all personal information such as telephone directory and caller list or scrap P. C. Board.
Component
Component
pin
Solder
Remove all of the
excess solder
(Slice View)
p
0.3mm X 100 g 0.6 mm X 100 g 1.0 mm X 100 g

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KX-TG4222CB/KX-TG313CSK/KX-TGA421CB/KX-TGA421CN
3 Specifications
Note:
• Design and specifications are subject to change without notice.
Note for Service:
•Operation range: Up to 300 m outdoors, Up to 50 m indoors, depending on the condition.
•Analog telephone connection: Telephone Line
Power source
Receiving Method
Oscillation Method
Detecting Method
Tolerance of OSC Frequency
Modulation Method
ID Code
Ringer Equivalence No. (REN)
Dialing Mode
Redial
Speed Dialer
Power Consumption
Operating Conditions
Dimensions (H x W x D)
Mass (Weight)
AC Adaptor
(PNLV226Z, 120 V AC, 60 Hz)
Super Heterodyne
PLL synthesizer
Quadrature Discriminator
13.824 MHz ±100 Hz
Frequency Modulation
40 bit
0.1B
Standby: Approx. 0.7 W
Maximum: Approx. 3.5 W
0 °C - 40 °C (32 °F – 104 °F)
20 % – 80 % relative air humidity
(dry)
Approx. 53
mm ´ 96 mm ´ 136 mm
Approx. 150 g
Rechargeable Ni-MH battery
AAA (R03) size (1.2 V 400 mAh)
Super Heterodyne
PLL synthesizer
Quadrature Discriminator
10.368 MHz ±100 Hz
Frequency Modulation
40 bit
Tone (DTMF)/Pulse
Up to 48 digits
Up to 32 digits (Phonebook)
6 days at Standby,
10 hours at Talk
0 °C - 40 °C (32 °F – 104 °F)
20 % – 80 % relative air humidity
(dry)
Approx. 168
mm ´ 48 mm ´ 33 mm
Approx. 130 g
Base Unit Handset Charger
AC Adaptor
(PNLV233-AZ, 120 V AC, 60 Hz)
Standby: Approx. 0.1 W,
Maximum: Approx. 1.8 W
0 °C - 40 °C (32 °F – 104 °F)
20 % – 80 % relative air humidity
(dry)
Approx. 44 mm ´ 72 mm ´ 73 mm
Approx. 50 g
Duplex procedure:
TDMA (Time Division Multiple Access)
Channel spacing:
1,728 kHz
Bit rate:
1,152 kbit/s
Modulation:
GFSK (Gaussian Frequency Shift Keying)
RF transmission power:
115 mW (max.)
Voice coding:
ADPCM 32 kbit/s
N
N
N
N
N
N
NStandard:
DECT 6.0 (Digital Enhanced Cordless
Telecommunications 6.0)
NNumber of channels:
60 Duplex Channels
NFrequency range:
1.92 GHz to 1.93 GHz

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KX-TG4222CB/KX-TG313CSK/KX-TGA421CB/KX-TGA421CN
4 Location of Controls and Components
Refer to the Operating Instructions.
Note:
You can download and refer to the Operating Instructions (Instruction book) on TSN Server.
5 Installation Instructions
Refer to the Operating Instructions.
Note:
You can download and refer to the Operating Instructions (Instruction book) on TSN Server.
6 Operating Instructions
Refer to the Operating Instructions.
Note:
You can download and refer to the Operating Instructions (Instruction book) on TSN Server.

8
KX-TG4222CB/KX-TG313CSK/KX-TGA421CB/KX-TGA421CN
Memo

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KX-TG4222CB/KX-TG313CSK/KX-TGA421CB/KX-TGA421CN
7 Schematic Diagram
7.1. For Schematic Diagram
7.1.1. Base Unit (Schematic Diagram (Base Unit_Main))
Notes:
1. DC voltage measurements are taken with voltmeter from the negative voltage line.
2. The schematic diagrams may be modified at any time with the development of new technology.
7.1.2. Handset (Schematic Diagram (Handset_Main))
Notes:
1. DC voltage measurements are taken with an oscilloscope or a tester with a ground.
2. The schematic diagrams may be modified at any time with the development of new technology.
Important Safety Notice:
Components identified by mark have special characteristics important for
safety. When replacing any of these components, use only the manufacture's
specified parts.

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KX-TG4222CB/KX-TG313CSK/KX-TGA421CB/KX-TGA421CN
7.2. Schematic Diagram (Base Unit_Main)
NC: No Components
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
(12)
(9)
(10)
(11)
(12)
(13)
(14)
(15)
(16)
(17)
(18)
SHORT
URX
EEP_WP EEP_SDA EEP_SCL
JTAG_RTCK
ANS_LED
MSG_LED
MSG_LED
KEYS_E
JTAG_TDO
KEYS_D
KEYS_C
KEYIN3
KEYIN2
KEYIN1
JTAG_TDI
JTAG_TCK
JTAG_TMS
UTX
JTAG_TCK
JTAG_RTCK
JTAG_TDO JTAG_TMS JTAG_TDI
TXp
+3.0V
C517 0.1u
UGND
RSTN
C601 0.1u
TXn
RTCK
STM/CKM/P15
RXp
C518 0.1u
GND
VBAT
C508 10p
RXn
X501
13.824M
VDDC
C516 0.1u
R507
1k
+3.0V
LED_VDD
NC
R652 680
KEYS_C
KEYIN2
ANS_LED
KEYIN1
VBAT
KEYIN3
KEYS_E
KEYS_D
R651 680
MSG_LED
Q652
Q651
IC601
1
*CS
2
DO/IO1
6
CLK
7
*HOLD/IO3
3
*WP/IO2
8
VCC
4
GND
5
DI/IO0
D472 NC
AK
D473 NC
AK
C478 NC
C476 NC
C479 NC
C477 NC
C515
1u
R509 NC
C513 2.2u
D
N
GDN
G
VBAT
RXp
RXn
TXn
L803
2.7n
TXp
C895
2p
C897
NC
GND
GND
C819
10p
L804
NC
C896
NC
R506 10k R502 10k R503 10k R504 10k
TCK TMS TDI TDO
UTX URX
SW1
NC
1
2
SHORT1
SHORT2
SHORT4
SHORT5
45
TXp
46
RXp
47
RXn
48
GND_RF
49
TRSW_p
50
ANT_n
51
ATST_n
52
ATST_p
40
VDD_IF
41
VCC_FE
42
ANT
43
TRSW_n
44
TXn
53
TEST
54
RSTN
55
NC
56
VCC_VCO
57
GPIO[27]
58
VDDUSB
59
DM_USB/GPI28
60
DP_USB/GPI29
61
VDDC1
62
JTAG_TDO
63
JTAG_TDI
64
JTAG_TCK
65
JTAG_TMS
66
JTAG_RTCK
67
GPIO[0]/SCL_IIC
68
GPIO[1]/SDA_IIC
69
GPIO[2]
70
GPIO[3]
71
GPIO[4]
GND
GND
SHORT6
GND
ANT1
12
GND
GND
SHORT3
GND
C871 1.5p
C872
1.3p
C873
2p
C874
15p
TO RF BLOCK
1
10
open-stub
SL
W=2.0mm
L=10.8mm
SL
W=0.3mm
L=6.5mm
Tx-balun
SL
W=0.3
L=40mm
MSL
Wm=0.4mm
Lm=10mm
FbB"
C=2.5pF
7.3mm2
open-stub
SL
W=0.6mm
L=20mm
open-stub
SL
W=2.9mm
L=3.8mm
SL
W=0.3mm
L=12.45mm
Pre-matching
MSL
W=0.25
L=2mm
SL
W=0.3mm
L=6.95mm
SL
W=0.2mm
L=20mm
open-stub
SL
W=2.2mm
L=5.0mm
FbB"
C=2.5pF
7.3mm2
MSL
W=0.25
L=2mm
RF Block
SPP
SPN
W 0.15mm
L 6.2mm
1st layer
ANT-
Pattern
W 0.2mm
L 3.8mm
1st layer
SHORT
SHORT
SHORT
SHORT
SHORT