panasonic tg9120pd_final_71 Datasheet

ORDER NO. KM40610217CE

Telephone Equipment

KX-TG9120PDS
KX-TGA910FXS

Digital Cordless Answering System

Silver Version
(for Poland)

© 2006 Panasonic Communications Co., Ltd. All
rights reserved. Unauthorized copying and
distribution is a violation of law.

KX-TG9120PDS/KX-TGA910FXS

2

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)--------------- 4

3 Specifications ----------------------------------------------------- 6
4 Technical Descriptions----------------------------------------- 7

4.1. Block Diagram (Base Unit)------------------------------ 7

4.2. Circuit Operation (Base Unit)--------------------------- 8

4.3. Block Diagram (Handset)-------------------------------11

4.4. Circuit Operation (Handset)----------------------------12

4.5. Circuit Operation (Charger Unit)----------------------13

4.6. Signal Route -----------------------------------------------14

5 Location of Controls and Components ------------------16

5.1. Controls -----------------------------------------------------16

6 Installation Instructions---------------------------------------17

6.1. Connections------------------------------------------------17

6.2. Battery-------------------------------------------------------17

6.3. Expanding your phone system ------------------------19

7 Operation Instructions-----------------------------------------20

7.1. Base Unit Settings----------------------------------------20

7.2. Handset Settings -----------------------------------------21

7.3. Registering a Handset to a Base Unit---------------22

7.4. Copying Phonebook Entries ---------------------------23

7.5. For Service Hint-------------------------------------------24

8 Service Mode -----------------------------------------------------25

8.1. Engineering Mode----------------------------------------25

8.2. Copying Phonebook Items When Repairing-------30

8.3. How to Clear User Setting------------------------------32

9 Troubleshooting Guide----------------------------------------33

9.1. Troubleshooting Flowchart-----------------------------33

9.2. Troubleshooting by Symptom (Base Unit and
Charger Unit) ----------------------------------------------41

9.3. Troubleshooting by Symptom (Handset) -----------45

9.4. How to Replace the Flat Package IC ----------------49

9.5. How to Replace the LLP (Leadless Leadframe
Package) IC------------------------------------------------51

10 Disassembly and Assembly Instructions ---------------53

10.1. Disassembly Instructions -------------------------------53

10.2. Assembly Instructions -----------------------------------57

11 Measurements and Adjustments---------------------------58

11.1. The Setting Method of JIG (Base Unit) -------------58

11.2. Adjustment Standard (Base Unit)---------------------60

11.3. Adjustment Standard (Charger Unit)-----------------61

11.4. The Setting Method of JIG (Handset) ---------------62

11.5. Adjustment Standard (Handset) ----------------------64

11.6. Things to Do after Replacing IC ----------------------65

11.7. RF Specification-------------------------------------------66

11.8. How to Check the Handset Speaker or
Receiver ----------------------------------------------------67

11.9. Frequency Table (MHz) ---------------------------------67

12 Schematic Diagram ---------------------------------------------68

12.1. For Schematic Diagram---------------------------------68

12.2. Schematic Diagram (Base Unit_Main) --------------70

12.3. Schematic Diagram (Base Unit_Operation) -------72

12.4. Schematic Diagram (Handset) ------------------------74

12.5. Schematic Diagram (Charger Unit) ------------------76

13 Printed Circuit Board-------------------------------------------77

KX-TG9120PDS/KX-TGA910FXS

13.1. Circuit Board (Base Unit_Main) ---------------------- 77

13.2. Circuit Board (Base Unit_Operation)---------------- 79

13.3. Circuit Board (Handset) -------------------------------- 81

13.4. Circuit Board (Charger Unit)--------------------------- 83

14 Appendix Information of Schematic Diagram--------- 84

14.1. CPU Data (Base Unit) ---------------------------------- 84

14.2. CPU Data (Handset) ------------------------------------ 86

14.3. Terminal Guide of the ICs, Transistors and
Diodes ------------------------------------------------------ 89

15 Exploded View and Replacement Parts List----------- 90

15.1. Cabinet and Electrical Parts (Base Unit)----------- 90

15.2. Cabinet and Electrical Parts (Handset)------------- 91

15.3. Cabinet and Electrical Parts (Charger Unit)------- 92

15.4. Accessories and Packing Materials ----------------- 93

15.5. Replacement Parts List--------------------------------- 95

3

KX-TG9120PDS/KX-TGA910FXS

1 Safety Precaution

1.1. For Service Technicians

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

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).

4

KX-TG9120PDS/KX-TGA910FXS

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.

2.2.2. How to Recognize that Pb Free Solder is Used

(Example: Handset P.C.B.)

Marked

SP

TALK

LED1

SW1

LED2

POWER_KEY

MIC

INT

R

0

#

7

8

9

4

5

1

LED3LED5

2

LED4LED6

36

SOFT_C

(Flow Solder Side View)

Note:

The location of the “PbF” mark is subject to change without notice.

SOFT_A

CLEAR

PbF

R136

C41

R59

R58

Q6

R134

C40

R133

R79

RA5

C50

RA4 RA3 RA2

CN1

RA1

130

C49

LED-K

LED-A

LED7

5

KX-TG9120PDS/KX-TGA910FXS

3 Specifications

6

4 Technical Descriptions

4.1. Block Diagram (Base Unit)

To TEL_LINE

CN1

A
B

To AC Adaptor

7

CN2

Bridge

Rect D3

Bell/Caller ID

Interface

Limit

Resistor

3.3V
Reg.

2.5V
Reg.

1.8V
Reg.

Hook Switch

CHARGE
CONTACT

VUNREG

IC1

3.3V

Q9

2.5V

Q8

1.8V

Off-Hook Line Voltage

Q4,Q5

HOOK

Audio

EEPROM

IC5

Analog
Switch

SCL

SDA

BELL

64 ADCO

59
54

61
52

60
56

55

6
5

FLASH

MEMORY

(TAM)

IC9

CPU

10
11
12
13
14

A/D
D/A

Analog

Front

End

RESET
CS

SCK
SI
SO

Speech Encoding
Speech Decoding

ADPCM

Codec Filter

DSP

BBIC

IC7

39 40 38 36 37 62

9

10 11 23 12

TAM Companion IC

IC8

Burst Encoding

Burst Decoding

CS

RF

Interface

BMC

12

13

18
19

15
20

22

21

TXDA

RXDA

RSSI
SYCL

SYDA
SYEN

XTAL

X1

18

31

16

2

8
14

21

13
12

IC10

RF Module

10.368
MHz

ANT1
ANT2

KX-TG9120PDS/KX-TGA910FXS

KX-TG9120 BLOCK DIAGRAM (BASE UNIT)

KX-TG9120PDS/KX-TGA910FXS

4.2. Circuit Operation (Base Unit)

4.2.1. Outline

Base Unit consists of the following ICs as shown in Block Diagram (Base Unit) (P.7).

• DECT BBIC (Base Band IC): IC7

- Handling all the audio, signal and data processing needed in a DECT base unit

- Controlling the DECT specific physical layer and radio section (Burst Module Controller section)

- ADPCM code filter for speech encoding and speech decoding (DSP section)

- Echo-cancellation and Echo-suppression (DSP section)

- Any tones (tone, sidetone, ringing tone, etc.) generation (DSP section)

- DTMF receiver (DSP section)

- Clock Generation for RF Module

- ADC, DAC, timer, and power control circuitry

- All interfaces (ex: RF module, EEPROM, LED, Analog Front End, etc.)

• RF Module: IC10

- PLL Oscillator

-Detector

- Compress/Expander

- First Mixer

- Amplifier for transmission and reception

• EEPROM: IC5

- Temporary operating parameters (for RF, etc.)

• FLASH MEMORY: IC9

- Voice Prompt (TAM) D/L Area

- ICM/OGM/MEMO Recording Area

• TAM Companion: IC8

- Voice data compression and decompression

- Speaker Amp

-LED Driver

• Additionally,

- Power Supply Circuit (+3.3V, +2.5V, +1.8V output)

- Crystal Circuit (10.368MHz)

- Charge Circuit

- Telephone Line Interface Circuit

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KX-TG9120PDS/KX-TGA910FXS

4.2.2. Power Supply Circuit

The power is supplied to the DECT BBIC, RF Module, EEPROM and Charge Contact from AC Adaptor (+6.5V) as shown in
Fig.101. The power supply is as follows;

• DECT BBIC (IC7):

CN2 (+6.5V) → IC1 → Q9 → IC7
CN2 (+6.5V) → IC1 → Q8 → IC7

• RF Module (IC10):

CN2 (+6.5V) → IC1 → Q9 → IC10 (PLL)
CN2 (+6.5V) → IC1 → Q10 → IC10 (Power AMP)

• EEPROM (IC5):

CN2 (+6.5V) → IC1 → Q9 → IC5

• FLASH MEMORY (IC9):

CN2 (+6.5V) → IC1 → IC9

• TAM Companion (IC8):

CN2 (+6.5V) → IC1 → Q9 → IC8
CN2 (+6.5V) → IC1 → Q8 → IC8

• Charge Contact (TP16):

CN2 (+6.5V) → R55, R56 → TP16

<Fig.101>

9

KX-TG9120PDS/KX-TGA910FXS

4.2.3. Telephone Line Interface

<Function>

• Bell signal detection

• Clip signal detection

• ON/OFF hook circuit

Bell & Clip (: Calling Line Identification Presentation: Caller ID) signal detection:

In the standby mode, Q3 is open to cut the DC loop current and decrease the ring load.
When ring voltage appears at the L1T (A) and L1R (B) leads (when the telephone rings), the AC ring voltage is transferred as
follows;

•A → C4 → R6 → R33 → IC7 Pin 60 (CID INp)

•B → C3 → R4 → R35 → IC7 Pin 52 (CID INn)

ON/OFF hook circuit:

In the standby mode, Q3 is open, and connected as to cut the DC loop current and to cut the voice signal. The unit is conse­quently in an on-hook condition.
When IC7 detects a ring signal or press the TALK Key onto the handset, Q4 turns on and then Q3 turns on, thus providing an
off-hook condition (DC current flows through the circuit) and the following signal flow makes the loop current.

•A → D3 → Q3 → Q5 → R21 → R22 → D3 → B [OFF HOOK]

4.2.4. Transmitter/Receiver

• Audio Circuits and DTMF tone signal circuits.

Base Unit and Handset mainly consist of RF Module and DECT BBIC.
Base Unit and Handset transmit/receive voice signal and data signal through the antenna on carrier frequency.

Signal Path:

*Refer to Signal Route (P.14).

4.2.4.1. Transmitter Block

The voice signal input from the TEL LINE interface goes to RF Module (IC10) through DECT BBIC (IC7) as shown in Block Dia­gram (Base Unit) (P.7)

The voice signal passes through the analog part of IC7 where it is amplified and converted to a digital audio stream signal. The
burst switch controller processes this stream performing encryption and scrambling, adding the various other fields to produce
the GAP (Generic Access Profile) standard DECT frame, assigning to a time slot and channel etc.
In IC10, the carrier frequency is changing, and frequency modulated RF signal is generated and amplified, and radiated from

antenna. Handset detects the voice signal or data signal in the circuit same as the following explanation of Receiver Block.

4.2.4.2. Receiver Block

The signal of 1900 MHz band (1881.792 MHz ~ 1897.344 MHz) which is input from antenna is input to IC10 as shown in Block
Diagram (Base Unit) (P.7).
In IC10, the signal of 1900 MHz band is downconverted to 864 kHz signal and demodulated, and goes to IC7 as GAP (Generic
Access Profile) standard DECT frames. It passes through the decoding section burst switch controller where it separates out the

frame information and performs de-encryption and de-scrambling as required. It then goes to the DSP section where it is turned

back into analog audio. This is amplified by the analog front end, and goes to the TEL LINE Interface.

4.2.5. Pulse Dialling

During pulse dialing the hookswitch (Q3,Q4) is used to generate the pulses using the HOOK control signal, which is set high
during pulses. To force the line impedance low during the “pause” intervals between dial pulses, the PULSE_DIAL signal turns
on Q2.

10

4.3. Block Diagram (Handset)

KX-TG9120PDS/KX-TGA910FXS

SPEAKER

RECEIVER

MIC

CN4

1
2
3
4
5

Headset

CHARGE(+)

CHARGE
CONTACTS

CHARGE(-)

BATTERY+

BATTERY
TERMINAL

BATTERY-

LCD

LCD-BACK LIGHT
KEY-BACK LIGHT

Ringer LED

CHARGE
CIRCUIT

Q9,Q10,Q11

D10

SWITCHED
SUPPLY

Q1

LCD_D/C
LCD_RESET

LCD_CS
WRITE

READ

5

SP AMP

IC6

8

CHARGE

CHARGE DETECT

DC/DC-SWITCH

4.0V

3.0V

3.0V
Q8

_

VBAT1

1.8V
Q7

1.8V

112

110
111

118

97
96

107

93

104

105

11

81
61

79
42

13

D/A

A/D

Analog

Front

End

CPU

Speech

Decoding

Speech

Encoding

ADPCM

Codec

Filter

DSP

Burst

Decoding

Burst

Encoding

RF

Interface

BMC

57,58,62

50,51,52,53,54,80,83,84

BBIC

IC1

RXDA

26

TXDA

28

RSSI

25
39

SYDA

38

SYEN

40

SYCL

20

21

ON SWITCH

95

ROWS

COLUMNS

RF

Module

IC20

XTAL

X1

10.368
MHz

BATTERY

KEYPAD

Flash_CS

Flash ROM

IC2

60

DATA BUS

44 43 59

ADDRESS BUS

WRITE

READ

SRAM

IC3

ADDRESS BUS: 3~9, 29~35, 122~128
DATA BUS: 68~75, 85~92

KX-TGA910 BLOCK DIAGRAM (HANDSET)

11

SRAM_CS

KX-TG9120PDS/KX-TGA910FXS

4.4. Circuit Operation (Handset)

4.4.1. Outline

Handset consists of the following ICs as shown in Block Diagram (Handset) (P.11).

• DECT BBIC (Base Band IC): IC1

- All data signals (forming/analyzing ACK or CMD signal)

- All interfaces (ex: Key, Detector Circuit, Charge, DC/DC Converter, Flash ROM, SRAM, LCD)

• FLASH MEMORY (substitute EEPROM): IC2

- Source program data and temporary user data are stored

•SRAM: IC3

- Application data and code are temporary stored

• RF Module: IC20

- PLL Oscillator

-Detector

- Compress/Expander

- Amplifier for transmission and reception

4.4.2. Power Supply Circuit/Reset Circuit

Circuit Operation:

When power on the Handset, the voltage is as follows;

BATTERY(2.2 V ~ 2.6 V: BAT+) → F1, L1, D1 → Q7 (1.8 V), Q8 (3.0 V), Q1 (4.0 V)

The Reset signal generates IC1 (120 pin) and 1.8 V.

4.4.3. Charge Circuit

Circuit Operation:

When charging the handset on the Base Unit, the charge current is as follows;

DC+(6.5V) → R55, R56 → CHARGE+(Base) → CHARGE+(Handset) → Q10 → D10 → F1 → BAT+... Battery...
BAT- → R43 → GND → CHARGE-(Handset)→ CHARGE-(Base) → GND → DC-(GND)

In this way, the BBIC on Handset detects the fact that the battery is charged.
The charge current is controlled by switching Q10 of Handset.

Refer to Fig.101 in Power Supply Circuit (P.9).

4.4.4. Battery Low/Power Down Detector

Circuit Operation:

“Battery Low” and “Power Down” are detected by BBIC which check the voltage from battery.
The detected voltage is as follows;

• Battery Low

Battery voltage: V(Batt) 2.25V ± 50mV (When the back light disappears)

The BBIC detects this level and " " starts flashing.

• Power Down

Battery voltage: V(Batt) 2.00V ~ 2.05V

The BBIC detects this level and power down.

4.4.5. Speakerphone

The hands-free loudspeaker at SP+ and SP- works as a ringer/alarm as well.

12

4.5. Circuit Operation (Charger Unit)

4.5.1. Power Supply Circuit

The power supply is as shown.

KX-TG9120PDS/KX-TGA910FXS

13

KX-TG9120PDS/KX-TGA910FXS

4.6. Signal Route

14

KX-TG9120PDS/KX-TGA910FXS

15

KX-TG9120PDS/KX-TGA910FXS

5 Location of Controls and Components

5.1. Controls

5.1.1. Base Unit

5.1.2. Handset

16

6 Installation Instructions

KX-TG9120PDS/KX-TGA910FXS

6.1. Connections

Base unit

When connecting the AC adaptor to the base unit, a short
beep will be heard. If it is not heard, check the connections.

Charger

Connect the AC adaptor to the charger and route the cable
as shown. The charger can be mounted on the wall, if
required.

6.2. Battery

6.2.1. Installation/Replacement

Important:

• Use only the included rechargeable batteries HHR-4EPT.

• When replacing batteries, we recommend using the Pana-

sonic rechargeable batteries P03P.

• Wipe the battery ends ( , ) with a dry cloth.

• When installing the batteries, avoid touching the battery

ends ( , ) or the unit contacts.

Note:

• 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.

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.

17

KX-TG9120PDS/KX-TGA910FXS

6.2.2. Battery Charge

Note:

• It is normal for the handset to feel warm during charging.

• If you want to use the unit immediately, charge the batteries
for at least 15 minutes.

• Clean the charge contacts of the handset, base unit, and
charger with a soft, dry cloth, otherwise the batteries may
not charge properly. Clean if the unit is exposed to grease,
dust, or high humidity.

6.2.3. Battery Strength

6.2.4. Panasonic Ni-MH Battery Perfor­mance (included batteries)

Note:

• It is normal for batteries not to reach full capacity at the initial
charge. Maximum battery performance is reached after a
few complete cycles of charge/discharge (use).

• Actual battery performance depends on a combination of
how often the handset is in use and how often it is not in use
(standby).

• Battery operating time may be shortened over time depend­ing on usage conditions and ambient temperature.

• Even after the handset is fully charged, the handset can be
left on the base unit or charger without any ill effect on the
batteries.

• The battery strength may not be displayed correctly after you
replace the batteries. In this case, place the handset on the
base unit or charger and charge for at least 7 hours.

18

6.3. Expanding your phone system

You can expand your phone system by registering the optional devices to a single base unit.

• A maximum of 6 total units (optional and included) can be registered to a single base unit.

Note for Service:

For these handset, please refer to each service manual.

KX-TG9120PDS/KX-TGA910FXS

19

KX-TG9120PDS/KX-TGA910FXS

7 Operation Instructions

7.1. Base Unit Settings

For your reference, a chart of all items which can be customised for the base unit is shown below.

• These items are customised using the handset.

• When customising the base unit, the current item or setting is highlighted on the display.

*1 The item will not be reset when pressing , , and key of the handset. Refer to How to Clear User Setting (P.32).

*2 If you forget your PIN, see For Service Hint (P.24).
If you change the PIN, please make note of your new PIN. The unit will not reveal the PIN to you.
*3 The items are not shown on the display.

7.1.1. Answering System Settings

7.1.2. SMS Settings

20

7.2. Handset Settings

KX-TG9120PDS/KX-TGA910FXS

*1 The item will not be reset when pressing , , and keys. Refer to How to Clear User Setting (P.32).

*2 For USB adaptor KX-TGA915EX users only.

*3 The item will not be reset when pressing , , and keys. Refer to How to Clear User Setting (P.32).

*4 The items are not shown on the display.
*5 Here, only the case that a handset is registered to a maximum of 4 Base units is mentioned.

Cross Reference:

Registering a Handset to a Base Unit (P.22)

21

KX-TG9120PDS/KX-TGA910FXS

7.3. Registering a Handset to a Base Unit

The included handset and base unit are preregistered. If for some reason the handset is not registered to the base unit (for
example, flashes even when the handset is near the base unit), register the handset manually.

Cross Reference:
For Service Hint (P.24)

7.3.1. Cancelling a Handset

22

KX-TG9120PDS/KX-TGA910FXS

7.3.2. Cancelling a Base Unit

7.4. Copying Phonebook Entries

You can copy handset phonebook entries to the shared phonebook or to the handset phonebook of another compatible
Panasonic handset.

Note:

• Category settings for phonebook entries are not copied.

7.4.1. Copying all entries between handset phonebooks

23

KX-TG9120PDS/KX-TGA910FXS

7.5. For Service Hint

24

8 Service Mode

8.1. Engineering Mode

8.1.1. Base Unit

KX-TG9120PDS/KX-TGA910FXS

25

KX-TG9120PDS/KX-TGA910FXS

Frequently Used Items (Base Unit)

ex.)

Items (*3) Address Default Data New Data Remarks

C-ID (FSK) sensitivity 04 72 00 01 (6dB up) 02 (12dB up) When hex changes from “00” to “01” or “02”,

gain increases by 6dB or 12dB.

C-ID (DTMF) sensitivity 04 80 50 60 (6dB up) 70 (12dB up) When hex changes from “50” to “60” or “70”,

SMS (FSK) receiving sensitiv­ity
SMS (FSK) sending level 04 8C/04 8B 0x12/0x28 19/20 (6dB up) 32/40 (12dB

Frequency 00 01 75 - - Use these items in a READ-ONLY mode to
ID 00 10~00 14 Given value - -

Bell length 01 F6 32 (5sec) (*4) 1E (3sec) 14 (2sec) This is time until bell stops ringing.

PULSE Dial speed
(10PPS -> 20PPS)

04 72 00 01 (6dB up) 02 (12dB up) When hex changes from “00” to “01” or “02”,

up)

03 5F 21 (33msec)

(*4)

03 60 43 (67msec)

(*4)

01 E4 57 (870msec)

(*4)

14 (20msec) - This is pulse make time. (Unit:1ms)

1E (30msec) - This is pulse break time. (Unit:1ms)

2C (440msec) - This is inter-digit time in pulse mode.

gain increases by 6dB or 12dB.

gain increases by 6dB or 12dB.
When hex changes from “00 0B” to “00 16” or
“00 2C”, gain increases by 6dB or 12dB.

confirm the contents. Careless rewriting may
cause serious damage to the computer system.

(Unit: 100ms)

(Unit:10ms)

Note:

(*1) Refer to Registering a Handset to a Base Unit (P.22).
(*2) When you enter the address or New Data, please refer to the table below.

Desired Number (hex.) Input Keys Desired Number (hex.) Input Keys

00 A[R] + 0
11 B[R] + 1

.. C[R] + 2
.. D[R] + 3
.. E[R] + 4

99 F[R] + 5

26

(*3)

Items Description

C-ID (FSK) sensitivity FSKGain_shiftgain
C-ID (DTMF) sensitivity Foutgains:HPFilter Foutgains
SMS (FSK) receiving sensitivity FSKGain_shiftgain
SMS (FSK) sending level wFskAttn:Signal Output Attenuation (DSP parameter)
Frequency Setting value of FREQ_TRIM_REG
ID ID
Bell length Time until it stops bell.
PULSE Dial speed
(10PPS -> 20PPS)

Pulse MakeTime and BreakTime.
bMakeTime:Pulse MakeTime Unit: 1ms
bBreakTime:Pulse Break Time Unit: 1ms
Inter-digit time in Pulse mode.
Unit:10ms

(*4)

Bell length 32(hex) = 50(dec) → 50 × 100msec = 5000msec (5sec)
PULSE Dial speed
(10PPS -> 20PPS)

21(hex) = 33(dec) → 33 × 1msec = 33msec
43(hex) = 67(dec) → 67 × 1msec = 67msec
57(hex) = 87(dec) → 87 × 10msec = 870msec

KX-TG9120PDS/KX-TGA910FXS

27

KX-TG9120PDS/KX-TGA910FXS

8.1.2. Handset

28

Frequently Used Items (Handset)

ex.)

KX-TG9120PDS/KX-TGA910FXS

Items (*2) Address Default Data New Data Possible Adjusted

Value MAX (hex)

Sending level 00 06 Adjusted value Given value 6F 00 (*3)

Receiving level 00 07 Adjusted value Given value 00 3F (*4)

Battery Low 00 04 25 - - -

Frequency 00 01 75 - - -

ID 00 10~00 14 Given value - - -

Possible Adjusted

Value MIN (hex)

Note:

(*1) When you enter the address or New Data, please refer to the table below.

Desired Number (hex.) Input Keys Desired Number (hex.) Input Keys

00 A[R] + 0
11 B[R] + 1
.. C[R] + 2
.. D[R] + 3
.. E[R] + 4
99 F[R] + 5

(*2)

Items Description

Sending level Analog Front End MIC Setting for Handset Mode
Receiving level Analog Front End LSR Setting for Handset Mode
Battery Low ADC value for battery low detection
Frequency Setting value of FREQ_TRIM_REG
ID International Portable Part Equipment Identities

Remarks

(*5)

(*3) When adding “01” (hex) to default value, sending level increases by 1.0dB.
ex.)

Item Default Data New Data

3A 3E 36

Sending level -7.5dBm -6.5dBm -8.5dBm

(*4) When reducing “01” (hex) from default value, receiving level increases by 1.0dB.
ex.)

Item Default Data New Data

14 18 10

Receiving level -23dBm -24dBm -22dBm

(*5) Use these items in a READ-ONLY mode to confirm the contents. Careless rewriting may cause serious damage to the

handset.

29

KX-TG9120PDS/KX-TGA910FXS

8.2. Copying Phonebook Items When Repairing

You can copy the handset phonebook to another (compatible Panasonic) handset. This will help to save the original phonebook
data which the customer has registered. Refer to the following procedures.

30

KX-TG9120PDS/KX-TGA910FXS

Note:

• If the max number of handsets are already registered to the base unit, a new handset cannot be registered.

• To register the handset, refer to Registering a Handset to a Base Unit (P.22).

• To cancel the handset, refer to Cancelling a Handset (P.22).

• To copy the handset phonebook, refer to Copying Phonebook Entries (P.23).

31

KX-TG9120PDS/KX-TGA910FXS

8.3. How to Clear User Setting

Units are reset to the Factory settings by this operation (Erase recorded Voice messages, stored Phone numbers, Caller list and
etc.)

Note:

• Some menus are not reset. Refer to Operation Instructions (P.20).

• The reset menus differ depending on the following operations.

• This operation should not be performed for a usual repair.

8.3.1. Resetting both base unit and handset

Both the base unit and the registered handset which you did the following steps to are reset. Other registered handsets
will not be reset.

Note:

(*1) Refer to Registering a Handset to a Base Unit (P.22).

8.3.2. Resetting only handset

The only handset is reset by doing the following steps to .

Note: (*2)

• The registration of the base unit and the handset are cancelled.

• If the handset needs to be registered to the base unit, refer to Registering a Handset to a Base Unit (P.22).

• If users do not bring the base unit with them, the registration procedure has to be done by users themselves.

32

9 Troubleshooting Guide

9.1. Troubleshooting Flowchart

KX-TG9120PDS/KX-TGA910FXS

Cross Reference:

Check Power (P.34)
Bell Reception (P.40)
Check Battery Charge (P.35)
Check Link (P.36)
Check Handset Transmission (P.39)
Check Handset Reception (P.39)
Signal Route (P.14)
Check Caller ID (P.39)
Check TAM Operation (P.40)

33

KX-TG9120PDS/KX-TGA910FXS

9.1.1. Check Power

9.1.1.1. Base Unit

Is the AC Adaptor inserted into AC outlet? (*1)

Cross Reference:

Power Supply Circuit (P.9)

9.1.1.2. Handset

Note:

(*1) Refer to Specifications (P.6) for part number and sup-
ply voltage of AC adaptor.

Cross Reference:

Power Supply Circuit/Reset Circuit (P.12)

34

9.1.2. Check Battery Charge

9.1.2.1. Base Unit

Cross Reference:

Power Supply Circuit (P.9)

9.1.2.2. Handset

KX-TG9120PDS/KX-TGA910FXS

Cross Reference:

Check Power (P.34)

Charge Circuit (P.12)

9.1.2.3. Charger Unit

Cross Reference:

Power Supply Circuit (P.9)

35

KX-TG9120PDS/KX-TGA910FXS

9.1.3. Check Link

9.1.3.1. Base Unit

Cross Reference:

Power Supply Circuit (P.9)
Check Point (Base Unit) (P.41)

Note:

(*1) Refer to Troubleshooting by Symptom (Base Unit and Charger Unit) (P.41).

36

KX-TG9120PDS/KX-TGA910FXS

Cross Reference:

Check Point (Base Unit) (P.41)

37

KX-TG9120PDS/KX-TGA910FXS

9.1.3.2. Handset

Cross Reference:

Power Supply Circuit/Reset Circuit (P.12)
Check Point (Handset) (P.45)

Note:

(*1) Refer to Troubleshooting by Symptom (Handset) (P.45).

38

KX-TG9120PDS/KX-TGA910FXS

Cross Reference:

Check Point (Handset) (P.45)

9.1.4. Check Handset Transmission

Cross Reference:

Signal Route (P.14)

9.1.5. Check Handset Reception

Cross Reference:

How to Check the Handset Speaker or Receiver (P.67).

Signal Route (P.14)

9.1.6. Check Caller ID

Cross Reference:

Signal Route (P.14)

39

KX-TG9120PDS/KX-TGA910FXS

9.1.7. Bell Reception

9.1.7.1. Base Unit

9.1.7.2. Handset

Cross Reference:

Telephone Line Interface (P.10)
Check Link (P.36)

How to Check the Handset Speaker or Receiver (P.67)

9.1.8. Check TAM Operation

Cross Reference:

Power Supply Circuit (P.9)

Note:

(*1) When replacing FLASH MEMORY (IC9), TAM data need to be written to it. Refer to Base Unit (P.65) of Things to Do after
Replacing IC.

40

KX-TG9120PDS/KX-TGA910FXS

9.2. Troubleshooting by Symptom (Base Unit and Charger Unit)

If your unit has below symptoms, follow the instructions in remedy column. Remedies depend on whether you have DECT tester
(*1) or not.

Note:

(*1) A general repair is possible even if you don’t have the DECT tester because it is for confirming the levels, such as Acoustic
level in detail.
(*2) Refer to Check Point (Base Unit) (P.41)

9.2.1. Check Point (Base Unit)

Please follow the items below when BBIC, EEPROM or FLASH is replaced.

Note:

After the measuring, suck up the solder of TP.
*: PC Setting (P.58) is required beforehand.
The connections of simulator equipment are as shown in Adjustment Standard (Base Unit) (P.60).

Items Check

(A) 3.3V Supply Confirma-

tion

(B) 2.5V Supply Confirma-

tion

(C) 1.8V Supply Confirma-

tion

(D)* BBIC Confirmation - 1. BBIC Confirmation (Execute the command “getchk”).

(E)* EEPROM Confirmation - 1. EEPROM Confirmation (Execute the command “ChkTG9120XXrevYY.bat”).

Point

VDD3 1. Confirm that the voltage between test point VDD3 and GND is 3.3V ± 0.2V. IC1, C31, C32,

VDD2 1. Confirm that the voltage between test point VDD2 and GND is 2.5V ± 0.2V. Q9, C70, C71

VDD1 1. Confirm that the voltage between test point VDD1 and GND is 1.8V ± 0.1V. Q8, R72, D12,

2. Confirm the returned checksum value.

Connection of checksum value and program number is shown below.

XX: country code
YY: revision number

2. Confirm the returned checksum value.

3. The checksum is displayed in the last output line.

Note:

“XX”, “YY”, and “checksum” vary depending on the country version. You can find
them in the batch file, PQZZ- mentioned in JIG and PC (P.58).

(F)* BBIC Clock Adjustment CLK 1. Input Command “rdeeprom 00 01 01”, then you can confirm the current value.

2. Adjust the frequency of CLK executing the command “setfreq xx (where xx is
the value)” so that the reading of the frequency counter is 10.368000MHz ±
10Hz.

Procedure Check or

Replace Parts

R38, R39, C36,

C37

C68

IC7, R37, C62,

C63, X1, C72,

R75~R81, R62,

R63

IC5, C51, R62,

R63, Q14, C50,

R57~R61

IC10, C111,

C112, X1, R73,

C62, C63

41

KX-TG9120PDS/KX-TGA910FXS

Items Check

Procedure Check or

Point

(G)* Hookswitch Check with

DC Characteristics

- 1. Connect CN1 (Telephone Socket) to Tel-simulator which is connected with

600 Ω.

2. Set line voltage to 48V and line current to 40mA at off-hook condition of nor­mal telephone.

3. Execute the command “hookoff”

4. Confirm that the line current is 40mA ± 5mA.

5. Execute the command “hookon”.

6. Confirm that the line current is less than + 0.8mA.

(H)* DTMF Generator Check - 1. Connect CN1 (Telephone Socket) to DTMF tester. (Road=600 Ω)

2. Link Handset and push dial key.

3. Confirm DTMF character.

4. Confirm that the high Group is -6 ± 2dBm.

5. Confirm that the low Group is -8 ± 2dBm.

(I)* Transmitted Power Con-

firmation

- Remove the Antenna before starting step from 1 to 7.

1. Configure the DECT tester (CMD60) as follows;
<Setting>

• Short A_1 and GND.

• Test mode: FP

• Traffic Carrier: 5

•Traffic Slot: 4

• Mode: Loopback

• PMID: 00000

• RF LEVEL = -70dBm.

2. Execute the command “testmode”.

3. Execute the command “sendchar dmv 2 2”.

4. Check that “Signalling Status” has been set to “Locked”, then press “ACCEPT
RFPI”.

5. Initiate connection from Dect tester (“set up connect”)

6. Execute the command “ANT1”.

7. Confirm that the NTP value at ANT is 20dBm ~ 25dBm.

(J)* Modulation Check and

Adjustment

- Follow steps 1 to 6 of (I).

7.Confirm that the B-Field Modulation is -350 ~ -400/+320 ~ +370kHz/div using
data type Fig31.

8.Adjust the B-Field Modulation if required. (Execute the command “readmod”
and “wrtmod xx”, where xx is the value.)

(K)* Frequency Offset Check - Follow steps 1 to 6 of (I).

7.Confirm that the frequency offset is < ± 45kHz.

(L)* Frequency Drift Confir-

mation

- Follow steps 1 to 6 of (I).

7.Confirm that the frequency drift is < ± 30kHz/ms.

Replace Parts

L1, L2, Q3, R14,

R15, Q4, R16,

R17, IC7, D3

IC7, R67, IC6,

R116, C141,

R29, C22, C23,

R18~R24,

C14~C17, Q5,

D4

IC7, IC10, L7,

L3, L4, L6,
C117, C118,
C119, C120,
C124, C125,
R106, R109,

DA1, C102,

R102, R103,

Q10, C110,
C112, R111,
C126, C127,

R112

IC7, IC10, L7,

L3, L4, L6,
C117, C118,
C119, C120,
C124, C125,
R106, R109,

DA1, C102,

R102, R103,

Q10, C110,
C112, R111,
C126, C127,

R112

IC7, IC10, L7,

L3, L4, L6,
C117, C118,
C119, C120,
C124, C125,
R106, R109,

DA1, C102,

R102, R103,

Q10, C110,
C112, R111,
C126, C127,

R112

IC7, IC10, L7,

L3, L4, L6,
C117, C118,
C119, C120,
C124, C125,
R106, R109,

DA1, C102,

R102, R103,

Q10, C110,
C112, R111,
C126, C127,

R112

42

KX-TG9120PDS/KX-TGA910FXS

Items Check

Procedure Check or

Point

(M)* Sensitivity Receiver

Confirmation

- Follow steps 1 to 6 of (I).

7.Set DECT tester power to -90dBm.

8.Confirm that the BER is < 1000ppm.

(N)* Timing Confirmation - Follow steps 1 to 6 of (I).

7.Confirm that the Timing accuracy is < ± 2.0ppm.

(O)* RSSI Level Confirmation - Follow steps 1 to 6 of (I).

7.Execute the command “readrssi”.

8. Confirm that the returned value is 22 ± A (hex).

(P)* Power RAMP Confirma-

tion

- Follow steps 1 to 6 of (I).

7.Confirm that Power RAMP is matching.

(Q)* Audio Check - 1. Link with Handset.

2. Input -45dBm/1kHz to MIC of Handset.
Measure the Level at Line I/F and distortion level.

3. Confirm that the level is -7.5dBm ± 2dBm and that the distortion level is < 5%
at TEL Line (600Ω Load).

4. Input -20dBm/1kHz to Line I/F.
Measure the level at Receiver of Handset and distortion level
(*Receive volume set to second position from minimum).

5. Confirm that the level is -23dBm ± 2dBm and that the distortion level is < 5%
at Receiver (Volume Middle, 150Ω Load).

(R) Charging Check - 1. Connect Charge Contact 12Ω/2W resistor between charge+ and charge-.

2. Measure and confirm voltage across the resistor is 3.10V ± 0.2V.

(S) TAM Operation

Confirmation

- 1. TAM Confirmation (Execute the command “sendchar_VPI”)

2. Confirm the returned Value (Value is “D887RA 01”).

Replace Parts
IC7, IC10, L7,

L3, L4, L6,
C117, C118,
C119, C120,
C124, C125,
R106, R109,

DA1, C102,

R102, R103,

Q10, C110,
C112, R111,
C126, C127,

R112

IC7, IC10, L7,

L3, L4, L6,
C117, C118,
C119, C120,
C124, C125,
R106, R109,

DA1, C102,

R102, R103,

Q10, C110,
C112, R111,
C126, C127,

R112

IC7, IC10, L7,

L3, L4, L6,
C117, C118,
C119, C120,
C124, C125,
R106, R109,

DA1, C102,

R102, R103,

Q10, C110,
C112, R111,
C126, C127,

R112

IC7, IC10, L7,

L3, L4, L6,
C117, C118,
C119, C120,
C124, C125,
R106, R109,

DA1, C102,

R102, R103,

Q10, C110,
C112, R111,
C126, C127,

R112
IC7, CN1, SA1,
L1, L2, D3, Q3,

Q4, R14, R15,

R16, R17

R55, R56, C48,

C49

IC8, IC9, R89,

R91, R92

43

KX-TG9120PDS/KX-TGA910FXS

9.2.2. Check Point (Charger Unit)

Items Check

Point

(A) Charging Check - 1. Connect Charge Contact 12Ω/2W resistor between charge+ and charge-.

2. Measure and confirm voltage across the resistor is 3.3V ± 0.2V.

Procedure Check or

Note:

After the measuring, suck up the solder of TP.

The connection of adjustment equipment is as shown in Adjustment Standard (Charger Unit) (P.61).

Replace Parts

R2, R1,

R3, R4

44

KX-TG9120PDS/KX-TGA910FXS

9.3. Troubleshooting by Symptom (Handset)

If your unit has below symptoms, follow the instructions in remedy column. Remedies depend on whether you have DECT tester
(*1) or not.

Note:

(*1) A general repair is possible even if you don’t have the DECT tester because it is for confirming the levels, such as Acoustic
level in detail.
(*2) Refer to Check Point (Handset) (P.45)

9.3.1. Check Point (Handset)

Please follow the items below when BBIC is replaced.

Note:

After the measuring, suck up the solder of TP.
*: PC Setting (P.62) is required beforehand.
The connections of simulator equipment are as shown in Adjustment Standard (Handset) (P.64).

Items Check

(A)* 1.8V Supply Adjustment VDD1 1. Confirm that the voltage between test point TP10 and GND is 1.8V ± 0.02V.

(B) DC/DC Supply Confir-

mation

(C) 3.0V Supply Confirma-

tion

(D)* BBIC Confirmation

(include Flash ROM)

(E)* SRAM Confirmation - 1. SRAM Confirmation (Execute the command “SRAM_Check.bat”)

(F)* Flash ROM Confirmation

(Substitute EEPROM)

Point

2. Execute the command “bandgap”, then check the current Value.

3. Adjust the 1.8V voltage of TP12 executing command “bandgap XX” (XX is the
value).

VDD3 1. Confirm that the voltage between test point TP10 and GND is 3.35V ± 0.3V

(Backlight is OFF)/4.3V ± 0.3V (Backlight is ON).

VDD2 1. Confirm that the voltage between test point TP11 and GND is 3.0V ± 0.1V. IC1, Q8, R3,

- 1. BBIC Confirmation (Execute the command “getchk”).

2. Confirm the returned checksum value.

Connection of checksum value and program number is shown below.

2. Confirm “OK” is displayed.

3. If “NG” is displayed, the PCB will be rejected.

- 1. Flash ROM Confirmation (Execute the command “ChkTGA910XXrevYY.bat”).
XX: country code
YY: revision number

2. Confirm the returned checksum value.

3. The checksum is displayed in the last output line.

Note:

“XX”, “YY”, and “checksum” vary depending on the country version. You can find
them in the batch file, PQZZ- mentioned in JIG and PC (P.62).

Procedure Check or

Replace Parts

IC1, Q7, C42,

R4

IC1, F1, C1,

C3, Q1, D1,

L1, Q15, R60,

R61, R50, L6,

R43, R54,
R46, C36,
R49, R57,

C57, R51

C43, R52,

R53, C34

IC1, X1, C35,

R12, R20,

R21, R73,
R74, IC2, R67,
R26, C18, IC3,

C20

IC3, C20

IC1, IC2, R67,

R26, C18

45

KX-TG9120PDS/KX-TGA910FXS

Items Check

Procedure Check or

Point

(G) Charge Control Check &

Charge Current Monitor

Check

- 1. Apply 3.5V between TP18(+) and TP19(-) with DC power supply and set cur­rent limit to 250mA.

2. Wait for more than two minutes.
(Wait for more than one minute when the base unit is linked with the handset)

3. Confirm that the current limit LED of DC power supply is ON/OFF.

4. Decrease current limit of DC power supply to 100mA.

5. Confirm that the current limit LED of DC power supply is stable. (Current limiter
is ON.)

(If charge control cannot be confirmed by this procedure, please use battery to hand­set power supply and try again.)

(H)* Charge Detection (OFF)

Check

- 1. Stop supplying 3.5V to TP18(+) and TP19(-).

2. Execute the command “Backloff” then “charge”.

3. Confirm that the returned value is 00 (hex).

(I)* Battery Monitor Check - 1. Apply 2.25V between BATT and GND.

2. Execute the command “readbatt”.
It assumes that the return value is XX.

a) 18 XX 32: No need to adjust
b) XX: 00 ~ 17: Reject
XX: 33 ~ FF: Reject

(J) Battery Low Confirma-

tion

- 1. Apply 2.40V between BAT+ and BAT-.

2. Confirm that there is no flashing of Battery Icon.

3. Apply 2.25V ± 0.08V between BAT+ and BAT-.

4. Confirm that there is flashing of Battery Icon.

(K)* BBIC Clock Adjustment CLK 1. Apply 2.5V between BAT(+) and BAT(-) with DC power.

2. Execute the command “conttx”.

3. Input Command “rdeeprom 00 01 01”, then you can confirm the current value.

4. Adjust the frequency of CLK executing the command “setfreq 00 xx (where xx
is the value)” so that the reading of the frequency counter is 10.368000MHz ±
10Hz.

Note:

CLK is displayed only for a few seconds when executing the command “conttx”
after battery is inserted.

(L)* Transmitted Power Con-

firmation

- Remove the Antenna before starting step from 1 to 4.

1. Configure the DECT tester (CMD60) as follows;
<Setting>

• Test mode: PP

• RFPI: 0102030405

• Traffic Carrier: 5

•Traffic Slot: 4

• Mode: Loopback

• RF LEVEL = -70dBm

2. Execute the command “regcmd60 01 02 03 04 05”.

3. Initiate connection from DECT tester.

4. Confirm that the NTP value at ANT is 19dBm ~ 25dBm.

(M)* Modulation Check and

Adjustment

- Follow steps 1 to 3 of (K).

4.Confirm that the B-Field Modulation is -350 ~ -400/+320 ~ +370kHz/div using
data type Fig 31.

5.Adjust the B-Field Modulation if required. (Execute the command “Readmod”
and “wrtmod xx”, where xx is the value.)

(N)* Frequency Offset Confir-

mation

- Follow steps 1 to 3 of (K).

4.Confirm that the frequency Offset is < ± 45kHz.

Replace Parts

IC1, Q9, F1,

Q10, D10, L6,

R43, R5, R6,

R7, R72, Q9,

Q11, D6, C36,

C129, R46,

R54

IC1, Q9, F1,

Q10, D10, L6,

R43, R5, R6,

R7, R72, Q9,

Q11, D6, C36,

C129, R46,

R54

IC1, F1, C1,

C3, R15, R16,

R17, C10, C11

IC1, F1, C1,

C3, R15, R16,

R17, C10, C11

IC1, X1, C35,

R12, IC20,

R127, R128

IC1, IC20,

C115, C120,

R66, IC7,

C118, C122,

C44, R127,
R128, R123,
R124, R125,
R126, R129,

R130, R78,

R121, R122

IC1, IC20,

C115, C120,

R66, IC7,

C118, C122,

C44, R127,
R128, R123,
R124, R125,
R126, R129,

R130, R78,

R121, R122

IC1, IC20,

C115, C120,

R66, IC7,

C118, C122,

C44, R127,
R128, R123,
R124, R125,
R126, R129,

R130, R78,

R121, R122

46

KX-TG9120PDS/KX-TGA910FXS

Items Check

Point

(O)* Frequency Drift Confir-

mation

(P)* Sensitivity Receiver

Confirmation

- Follow steps 1 to 3 of (K).

4.Confirm that the frequency Drift is < ± 30kHz/ms.

- Follow steps 1 to 3 of (K).

4.Set DECT tester power to -90dBm.

5.Confirm that the BER is < 1000ppm.

(Q)* Timing Confirmation - Follow steps 1 to 3 of (K).

4.Confirm that the Timing accuracy is < ± 2.0ppm.

(R)* RSSI Level Confirmation - Follow steps 1 to 3 of (K).

4.Set DECT tester power to -81dBm.

5.Execute the command “readrssi”.

6.Confirm that the returned value is 1B ± 8 (hex).

7.Set DECT tester power to -63dBm.

8.Execute the command “readrssi”.

9.Confirm that the returned value is 23 ± 8 (hex).

(S)* Power RAMP Confirma-

tion

(T) Audio Check and Confir-

mation

- Follow steps 1 to 3 of (K).

4.Confirm that Power RAMP is matching.

- 1. Link to BASE which is connected to Line Simulator.

2. Set line voltage to 48V and line current to 40mA.

3. Input -45dBm/1KHz to MIC and measure Line output level.

4. Confirm that the level is -7.5dBm ± 2dBm and that the distortion level is < 5% at

TEL Line (600Ω Load).

5. Input -20dBm/1KHz to Line I/F and measure Receiving level at REV-TEST1
and REV-TEST2.

6. Confirm that the level is -23dBm ± 2dBm and that the distortion level is < 5% at
Receiver. (vol = 2)

Procedure Check or

Replace Parts

IC1, IC20,

C115, C120,

R66, IC7,

C118, C122,

C44, R127,
R128, R123,
R124, R125,
R126, R129,

R130, R78,

R121, R122

IC1, IC20,

C115, C120,

R66, IC7,

C118, C122,

C44, R127,
R128, R123,
R124, R125,
R126, R129,

R130, R78,

R121, R122

IC1, IC20,

C115, C120,

R66, IC7,

C118, C122,

C44, R127,
R128, R123,
R124, R125,
R126, R129,

R130, R78,

R121, R122

IC1, IC20,

C115, C120,

R66, IC7,

C118, C122,

C44, R127,
R128, R123,
R124, R125,
R126, R129,

R130, R78,

R121, R122

IC1, IC20,

C115, C120,

R66, IC7,

C118, C122,

C44, R127,
R128, R123,
R124, R125,
R126, R129,

R130, R78,

R121, R122

IC1, R39, R40,

C64, CN4,

R42, R63,
C25, C60,
C61, C63,
C68, C23,
R38, R41,
C24, C69,

R37, R135,
C7, C70, L7,

C8, C78, D4,

D5, C77, C79

47

KX-TG9120PDS/KX-TGA910FXS

Items Check

(U) SP phone Audio Check

and Confirmation

Point

- 1. Link to Base which is connected to Line Simulator.

2. Set line voltage to 48V and line current to 40mA.

3. Set the handset off-hook using SP-Phone key.

4. Input -25dBm/1KHz to Line I/F and measure Receiving level at SP_TEST1 and
SP_TEST2.

5. Confirm that the level is -16dBm ± 2dBm and that the distortion level is < 5%.
(vol = 3)

Procedure Check or

Replace Parts

IC1, R39, R40,

C64, CN4,

R42, R63,
C25, C60,
C61, C63,
C68, C23,
R38, R41,
C24, C69,

R37, R135,

C7, C70, L7,

C8, IC6, R44,

C26, R45,
R64, C27,
C131, D8,
C28, C29,

C30, C126,

C31, C32,
C75, C76,

C132

9.3.2. Troubleshooting for Speakerphone (Handset)

When the customer’s telephone line corresponds to the following conditions and transmission signal of SP-Phone is interrupted,
performing the next set up to a cordless handset will improve it to some extent.

Conditions

1. When customer’s line has less line loss.
ex.) The customer is using optical fiber, ISDN terminal adaptor, or PBX.
In this case, receiving signal is strong and it may affect transmission signal.

2. When the other party is talking from noisy place.
ex.) The other party is using cellular phone. The background noise is very loud.
In this case, the noise from the other party (i.e. surrounding noise) may affect transmission signal.

Setting Method

• Change the address of EEPROM (0142) from 00 to 01.

48

KX-TG9120PDS/KX-TGA910FXS

9.4. How to Replace the Flat Package IC

Even if you do not have the special tools (for example, a spot heater) to remove the Flat IC, with some solder (large amount), a
soldering iron and a cutter knife, you can easily remove the ICs that have more than 100 pins.

9.4.1. Preparation

• PbF (: Pb free) Solder

• Soldering Iron

Tip Temperature of 700°F ± 20°F (370°C ± 10°C)

Note: We recommend a 30 to 40 Watt soldering iron. An expert may be able to use a 60 to 80 Watt iron where someone with
less experience could overheat and damage the PCB foil.

•Flux

Recommended Flux: Specific Gravity → 0.82.
Typ e → RMA (lower residue, non-cleaning type)

Note: See About Lead Free Solder (Pbf: Pb free) (P.4).

9.4.2. How to Remove the IC

1. Put plenty of solder on the IC pins so that the pins can be completely covered.

Note:

If the IC pins are not soldered enough, you may give pressure to the P.C. board when cutting the pins with a cutter.

2. Make a few cuts into the joint (between the IC and its pins) first and then cut off the pins thoroughly.

3. While the solder melts, remove it together with the IC pins.

When you attach a new IC to the board, remove all solder left on the board with some tools like a soldering wire. If some solder is

left at the joint on the board, the new IC will not be attached properly.

49

KX-TG9120PDS/KX-TGA910FXS

9.4.3. How to Install the IC

1. Temporarily fix the FLAT PACKAGE IC, soldering the two marked pins.

*Check the accuracy of the IC setting with the corresponding soldering foil.

2. Apply flux to all pins of the FLAT PACKAGE IC.

3. Solder the pins, sliding the soldering iron in the direction of the arrow.

9.4.4. How to Remove a Solder Bridge

1. Lightly resolder the bridged portion.

2. Remove the remaining solder along the pins using a soldering iron as shown in the figure below.

50

KX-TG9120PDS/KX-TGA910FXS

9.5. How to Replace the LLP (Leadless Leadframe Package) IC

9.5.1. Preparation

• PbF (: Pb free) Solder

• Soldering Iron

Tip Temperature of 700°F ± 20°F (370°C ± 10°C)

Note:

We recommend a 30 to 40 Watt soldering iron. An expert may be able to use a 60 to 80 Watt iron where someone with less
experience could overheat and damage the PCB foil.

• Hot Air Desoldering Tool

Temperature: 608°F ± 68°F (320°C ± 20°C)

9.5.2. Caution

• To replace the IC efficiently, choose the right sized nozzle of the hot air desoldering tool that matches the IC package.

• Be careful about the temperature of the hot air desoldering tool not to damage the PCB and/or IC.

9.5.3. How to Remove the IC

1. Heat the IC with a hot air desoldering tool through the P.C.Board.

2. Pick up the IC with tweezers, etc. when the solder is melted completely.

Note:

• Be careful not to touch the peripheral parts with tweezers, etc. They are unstable.

When it is hard to melt the solder completely, heat it with a hot air desoldering tool through the IC besides through the
P.C.Board.

3. After removing the IC, clean the P.C.Board of residual solder.

51

KX-TG9120PDS/KX-TGA910FXS

9.5.4. How to Install the IC

1. Place the solder a little on the land where the radiation GND pad on IC bottom is to be attached.

2. Place the solder a little on the land where IC pins are to be attached, then place the IC.

Note:

• When placing the IC, the positioning should be done very carefully.

3. Heat the IC with a hot air desoldering tool through the P.C.Board until the solder on IC bottom is melted.

Note:

• Be sure to place it precisely, controlling the air volume of the hot air desoldering tool.

4. After soldering, confirm there are no short and open circuits with visual inspection.

9.5.5. How to Remove a Solder Bridge

When a Solder Bridge is found after soldering the bottom of the IC, remove it with a soldering iron.

52

10 Disassembly and Assembly Instructions

10.1. Disassembly Instructions

10.1.1. Base Unit

KX-TG9120PDS/KX-TGA910FXS

53

KX-TG9120PDS/KX-TGA910FXS

10.1.2. Handset

54

KX-TG9120PDS/KX-TGA910FXS

55

KX-TG9120PDS/KX-TGA910FXS

10.1.3. Charger Unit

56

10.2. Assembly Instructions

10.2.1. Fix the LCD to the Main P.C.Board (Handset)

KX-TG9120PDS/KX-TGA910FXS

57

KX-TG9120PDS/KX-TGA910FXS

11 Measurements and Adjustments

11.1. The Setting Method of JIG (Base Unit)

11.1.1. Preparation

11.1.1.1. Equipment Required

• DECT tester: Rohde & Schwarz, CMD 60 is recommended.

• Frequency counter: it must be precise enough to measure intervals of 1Hz (precision; ±4ppm).
Hewlett Packard, 53131A is recommended.

• Digital multi-meter (DMM): it must be able to measure voltage and current.

• Oscilloscope

11.1.1.2. JIG and PC

• Serial JIG
JIG Cable: PQZZ1CD300E*

• PC which runs in DOS mode

• Batch file CD-ROM for setting: PQZZTG9120PD

Note:

*: If you have the JIG Cable for TCD500 series
(PQZZ1CD505E), change the following values of resis­tance. Then you can use it as a JIG Cable for both TCD300
and TCD500 series. (It is an upper compatible JIG Cable.)

Resistor Old value (kΩ)New value (kΩ)

R2 22 3.3
R3 22 3.3
R4 22 4.7
R7 4.7 10

11.1.2. PC Setting

11.1.2.1. Connections

Connect the AC adaptor to CN2 (base unit).

Connect the JIG Cable GND (black).

Connect the JIG Cable RX (red) and TX (yellow).

Note:

*: COM port names may vary depending on what your PC calls it.

58

11.1.2.2. Batch file Settings

KX-TG9120PDS/KX-TGA910FXS

Note:

• “****” varies depending on the country.

11.1.2.3. Commands

See the table below for frequently used commands.

Command name Function Example

rdeeprom Read the data of EEPROM Type “rdeeprom 00 00 FF”, and the data from address

readid Read ID (RFPI) Type “readid”, and the registered ID is read out.
writeid Write ID (RFPI) Type “writeid 00 18 E0 0E 98”, and the ID “0018 E0 0E

setfreq Adjust Frequency of RFIC Type “setfreq nn”.
hookoff Off-hook mode on Base Type “hookoff”.
hookon On-hook mode on Base Type “hookon”.
getchk Read checksum Type “getchk”.
wreeprom Write the data of EEPROM Type “wreeprom 01 23 45”. “01 23” is address and “45”

“00 00” to “FF” is read out.

98” is written.

is data to be written.

59

60

(A) - (S) is referred to Check Point (Base Unit) (P.41)

Note:

11.2.1. Flow Solder Side View

KX-TG9120PDS/KX-TGA910FXS

11.2. Adjustment Standard (Base Unit)

When connecting the simulator equipment for checking, please refer to below.

(Q)

(Q)

OSC

AF VOLT

METER

BELL

Simulator

LOOP
Simulator

(S) (Q)

AF

OSC

600Ω

DC POWER

6.5V

DC_INGND

L1R

(R)

Digital

Volt Meter

CHARGE-CHARGE+

12Ω

2w

Call - ID

L1T

Simulator

DTMF
Tester

(H)

L2T

3

L2R

24

L1T

L1R

DCM

2

1

DC_IN

RED

CHARGE

BLACK

(I) (J) (K) (L)
(M) (N) (O) (P)

GND

ANT

DECT Tester

CMD60

Digital

Volt Meter

GND

LINE_DC

LINE_DC

VDD2

PbF

VDD3

ANT

A_2

AF

Volt Meter

OSC

AF VOLT

METER

SP

150Ω

Dummy

Handset

GND

BUZ

6.3V 47uF

MIC

AF

OSC

PQUP11410Z

VDD1

KX-TG7100
7120
8100
8120

SP

SP+SP-

(A) (B) (C)

BUZ

VDD4

VDD4

VDD3

VDD1

VDD2

Digital

Volt Meter

GND TX RX

A_1

(I)

Short A_1 and GND.

CLK

RX
TX

GND

A

U-ART

GND

Frequency

CLK

(D) (E) (F) (G)
(H) (I) (J) (O) (S)

Counter

PC

(F)

11.3. Adjustment Standard (Charger Unit)

When connecting the simulator equipment for checking, please refer to below.

11.3.1. Flow Solder Side View

(A)

KX-TG9120PDS/KX-TGA910FXS

PbF

2

DC POWER

6.5V

GND (TP4)

TP4

for_ PQLV30045ZA

1

PQUP11413Z

Digital

Volt

Meter

TP3

12Ω/2W

TP1

GND (TP2)

BLACK RED

TP1TP2

TP3

A

Note:

(A) is referred to Check Point (Charger Unit) (P.44)

61

KX-TG9120PDS/KX-TGA910FXS

11.4. The Setting Method of JIG (Handset)

11.4.1. Preparation

11.4.1.1. Equipment Required

• DECT tester: Rohde & Schwarz, CMD 60 is recommended.

• Frequency counter: it must be precise enough to measure intervals of 1Hz (precision; ±4ppm).
Hewlett Packard, 53131A is recommended.

• DC power: it must be able to output at least 1A current under 2.4V for Handset.

• Digital multi-meter (DMM): it must be able to measure voltage and current.

• Oscilloscope

11.4.1.2. JIG and PC

• Serial JIG
JIG Cable: PQZZ1CD300E*

• PC which runs in DOS mode.

• Batch file CD-ROM for setting: PQZZTG9120PD

11.4.2. PC Setting

11.4.2.1. Connections

Connect the DC Power or Battery to BAT+ and BAT- (Handset).

Connect the JIG Cable GND (black).

Connect the JIG Cable UTX (yellow) and URX (red).

Note:

*: If you have the JIG Cable for TCD500 series
(PQZZ1CD505E), change the following values of resis­tance. Then you can use it as a JIG Cable for both TCD300
and TCD500 series. (It is an upper compatible JIG Cable.)

Resistor Old value (kΩ)New value (kΩ)

R2 22 3.3
R3 22 3.3
R4 22 4.7
R7 4.7 10

Note:

*: COM port names may vary depending on what your PC calls it.

62

11.4.2.2. Batch file Settings

KX-TG9120PDS/KX-TGA910FXS

Note:

• “****” varies depending on the country.

11.4.2.3. Commands

See the table below for frequently used commands.

Command name Function Example

rdeeprom Read the data of FLASH Type “rdeeprom 00 00 FF”, and the data from address

readid Read ID (RFPI) Type “readid”, and the registered ID is read out.
writeid Write ID (RFPI) Type “writeid 00 18 E0 0E 98”, and the ID “0018 E0 0E

setfreq Adjust Frequency of RFIC Type “setfreq nn”.
getchk Read checksum Type “getchk”.
wreeprom Write the data of FLASH Type “wreeprom 01 23 45”. “01 23” is address and “45”

“00 00” to “FF” is read out.

98” is written.

is data to be written.

63

(A) - (U) is referred to Check Point (Handset) (P.45)

Note:

11.5.1. Component View

11.5. Adjustment Standard (Handset)

KX-TG9120PDS/KX-TGA910FXS

When connecting the simulator equipment for checking, please refer to below.

64

Oscilloscope

Current

Probe

DC

6.5V

AF

GENERATOR

(T)

(When at BATT LOW)

DC POWER

2.00-2.25V

POWER KEY

TP18

TP20

TP21

6.3V
47uF

TP19

MIC+

MIC-

L4

CHARGE+

TP18

CHARGE-

TP20

TP21

C16

R43

TP19

L5

C129

F1

R54

R46

Q9

D10

BAT

R5

R17

C130

D6

Q10

R6

R72

R7

C65

C68

C70

C69

D11

C24

C23

R40

R39

R38

C64

R41

R37

C128

R23

D2

R24

Q3 Q12

L6

C93

R21

R74

R25

C46

R20

UTX

URX

BAT

R16

Q11

C36

C12

C10

C133

102

R15

103

C11

C66

C9

L7

C8

C7

R135

C127

C19

128

R14

R80

138

Q13 Q14

R73

C6
R81

R70

R71

C94

R82

Q4

C45

R30

Q15

R61

R60

BAT

GND

R137

C14

C13

R50

R51

R138

R139

R27

IC1

C2

R12

C5

R13

C4
C35

C34

R3

R4

C42

Q7

65

C20

R53

C43

Q8

R35

TP12

R36

R31

R34

R33

64

C47

R32

Q5

C15

L1

R62

JTAG

R19

SCLK

39

SRAM

IC3

X1

1.8V

2.7V

Zener

UTXURX

DC POWER

2.30-2.60V

(G) (H) (I) (J) (A) (B) (C)

PC

(A) (D) (E) (F) (I)

GND GND

(J) (K) (L) (R)

C48

R22 R26 R67

Oscilloscope

(L) (M) (N) (O)
(P) (Q) (R) (S)

DECT Tester

A

B

AF VOLT

METER

(T) (U)

CMD60

ANT1GNDBAT GND

1

SP+

8Ω

KX-TG9120/TGA910

C57

34

CN4

TP10

TP10

1

PQUP11445Z

POWER

C74

C131

C26

C27

C62

ANT

32 27

1

C115

C114

C122

R66

IC7

C120

C119

C118

CLK

C80

R128

C29

C30

C28

R127

R44

C126

R45 R64

IC6

D8

R47

C32

C31

C44

C73

10

11 16

IC20

R123

R129

R126

C71

R124

R130

R125

CLK

100Ω

22pF

R52

TP11

C1

C3

D1

R57

Q1

R49

R42

R63

C18

FLASH

IC2

C61

C25

25

C60

C33

C63

4V

3V

TP11

ANT1

26

R122

R121

SP

SP

C72

R78

C132

17

C75

C76

OSC

REV+

SP-

REV

REV

D41

C79

C78

C77

D51

TP12

GND

Frequency

Counter

AF VOLT

METER

150Ω

A

(T) (U)

REV-

AF

OSC

(K)

Digital

Volt Meter

LOOP

Simulator

600Ω

Dummy Base

Unit

KX-TG9120PDS/KX-TGA910FXS

11.6. Things to Do after Replacing IC

Cautions:

Some of the content on this page may not apply to models from some countries. The contents below are the minimum adjust­ments required for operation.

11.6.1. Base Unit

Before making the following adjustment, ensure you have carried out PC Setting (P.58) in The Setting Method of JIG (Base
Unit).

IC Necessary Adjustment
BBIC
(IC7)

EEPROM
(IC5)

FLASH
(IC9)

Programs for Voice processing, interface
for RF and EEPROM

Adjustment parameter data
(country version batch file, default batch
file, etc.)

Voice prompt data
(vary depending on country version)

1. Make sure to connect the JIG cable, then detach the DC Power.

2. Execute the command “flw43x ************.hex”.

3. Connect the DC Power.

4. Press the PC Enter key once.

5. After a few minutes, “Successful upgrade” is displayed on the PC indicating
downloading has finished.

6. Detach the JIG cable, then disconnect the DC Power.

7. Connect the DC Power.

8. Connect the JIG cable again, and execute the command “getchk”, then con­firm the checksum value is correct.

• If the downloading fails, start again from step 1.

9. Default batch file: Execute the command “default.bat”.

10. Country version batch file: Execute the command “TG9120XXrevYY”. (*1)

11. Clock adjustment: Refer to Check Point (F). (*2)

1. Change the address “0000” of EEPROM to “AA”.

2. Default batch file: Execute the command “default.bat”.

3. Country version batch file: Execute the command “TG9120XXrevYY”. (*1)

4. Clock adjustment: Refer to Check Point (F). (*2)

1. Wait more than 15 seconds after connecting the JIG Cables.

2. Execute the command “VPDL06 -16M ZZ.bin”. (*1)
(writing time: approx. 2.5min.)

3. Confirm voice prompt version: Refer to Check Point (S). (*2)

Note:

(*1) XX: country code, YY: revision number, ZZ: voice prompt
“XX”, “YY”, and “ZZ” vary depending on the country version. You can find them in the batch file, PQZZ- mentioned in JIG and
PC (P.58).

(*2) Refer to Check Point (Base Unit) (P.41)

11.6.2. Handset

Before making the following adjustment, ensure you have carried out PC Setting (P.62) in The Setting Method of JIG (Hand­set).

IC Necessary Adjustment
BBIC
(IC1)

Note:

(*3) Refer to Check Point (Handset) (P.45)

Programs for Voice processing, interface
for RF, Flash Rom and SRAM

1. Clock adjustment: Refer to Check Point (K). (*3)

2. 1.8 V setting and battery low detection: Refer to Check Point (A), (I) and (J).
(*3)

65

KX-TG9120PDS/KX-TGA910FXS

11.7. RF Specification

11.7.1. Base Unit

Item Value Refer to -. *
TX Power 20 dBm ~ 25 dBm Check Point (Base Unit) (I)
Modulation -350 ~ -400/+320 ~ +370 kHz/div Check Point (Base Unit) (J)
Frequency Offset -45 kHz ~ +45 kHz Check Point (Base Unit) (K)
Frequency Drift < ± 30 kHz / ms Check Point (Base Unit) (L)
RX Sensitivity < 1000 ppm Check Point (Base Unit) (M)
Timing Accuracy < ± 2.0 ppm Check Point (Base Unit) (N)
RSSI Level 22 hex ± A hex Check Point (Base Unit) (O)
Power RAMP Power RAMP is matching Check Point (Base Unit) (P)

*: Refer to Check Point (Base Unit) (P.41)

11.7.2. Handset

Item Value Refer to -. **
TX Power 19 dBm ~ 25 dBm Check Point (Handset) (L)
Modulation -350 ~ -400/+320 ~ +370 kHz/div Check Point (Handset) (M)
Frequency Offset -45 kHz ~ +45 kHz Check Point (Handset) (N)
Frequency Drift < ± 30 kHz / ms Check Point (Handset) (O)
RX Sensitivity < 1000 ppm Check Point (Handset) (P)
Timing Accuracy < ± 2.0 ppm Check Point (Handset) (Q)
RSSI Level 1B hex ± 8 hex (at -81dBm)

23 hex ± 8 hex (at -63dBm)

Power RAMP Power RAMP is matching Check Point (Handset) (S)

Check Point (Handset) (R)

**: Refer to Check Point (Handset) (P.45)

66

11.8. How to Check the Handset Speaker or Receiver

1. Prepare the digital voltmeter, and set the selector knob to ohm meter.

2. Put the probes at the speaker terminals as shown below.

KX-TG9120PDS/KX-TGA910FXS

11.9. Frequency Table (MHz)

BASE UNIT HANDSET

Channel No Transmit Frequency Receive Frequency Transmit Frequency Receive Frequency

1 1897.344 1897.344 1897.344 1897.344
2 1895.616 1895.616 1895.616 1895.616
3 1893.888 1893.888 1893.888 1893.888
4 1892.160 1892.160 1892.160 1892.160
5 1890.432 1890.432 1890.432 1890.432
6 1888.704 1888.704 1888.704 1888.704
7 1886.976 1886.976 1886.976 1886.976
8 1885.248 1885.248 1885.248 1885.248
9 1883.520 1883.520 1883.520 1883.520

10 1881.792 1881.792 1881.792 1881.792

Note:

Channel No. 10: In the Test Mode on Base Unit and Handset.

67

KX-TG9120PDS/KX-TGA910FXS

12 Schematic Diagram

12.1. For Schematic Diagram

12.1.1. 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.

12.1.2. Handset (Schematic Diagram (Handset))

Notes:

1. DC voltage measurements are taken with an oscilloscope or a tester with a ground.

2. The schematic diagram may be modified at any time with the development of new technology.

12.1.3. Charger Unit (Schematic Diagram (Charger Unit))

Notes:

1. DC voltage measurements are taken with voltmeter from the negative voltage line.

2. This schematic diagram may be modified at any time with the development of new technology.

68

Memo

KX-TG9120PDS/KX-TGA910FXS

69

KX-TG9120PDS/KX-TGA910FXS

12.2. Schematic Diagram (Base Unit_Main)

L2R

CN2

CN1

6

1
2
3
4

5

1

2

L2T L1T L1R

DCM

D1

J1
NC

J2
NC

D2
NC

J101

DC_IN

12

NC

SA1

SA2

TP_RLY1
L1T/TP_RLY2
L2T/TP_RLY3
L1R/TP_RLY4
TP_RLY5

12

Q1

3

1

NC

L1

33u

C2

NC

NC

D15

12
12

NC

D16

R2

NC

L2

33u

NC

C3

JT

For JT

1500p

C4

2

R1

C1

10k

1500p

NC

For NL

R5

180k

R7
NC

180k

C9

K680p

D3

1

2

3

C10

K680p

C5

R3

K1000p
R4
1M

C6
K1000p

R6
1M

R8

C7

10p

100k

R9
NC

C8

R10

100k

10p

1

D5

2

D6

12

J3

4

R11

3

2

+2.5V

NC

NC

NC

10

Q2

0

J4

R13

1

680

10k

R12

10p

C136

10p

C137

Q3

2

1

3

R14
100k

R15

2.7k
Q4

3

1

2

Caller ID,
Bell Signal

J220p

R33

LINE_DC

C11

C12

C52

R32
100k

C53
J220p

R34

1k

100k

NC

NC

R16

Loop Current

D4

12

TP9

R17

2.2k

10k

1k

R35

Bell signal

C54

K0.022u

R36

180k

C55

C13

C14

NC

C15NCC16

C56

R37

K0.1u

NC

R18

R19

K4700p

K0.1u

NC

27k

C18

NC

R20

2.7k

8.2k

C17

K2.2u

RX_AF

D7

NC

R25

12

47k

R24

NC

C20

Q5

2

3

1

C19
10p

R23
100k

12

R21

R27

100k

27

R22

+2.5V

D9

12

NC

R26

D8

12

NC

C21

C22

1u

C23

C24

K0.056u

R28

C25

470k

K0.01u

(1)

NC

NC

R29

56

NC

TX_AF

18R116

TP10

56n

C141

+8.0V

NC

C30

C31

C32

K2.2u

C135

CN4

NC

Charge Current

R55

22

R56

22

10p

10p

C49

C48

100u

C33

10p

R40NCD10

1
2

Cont

Sub

6

Vin

7

NC

IC2

NC

C38

NC

12

C39

C40

C44NCD11

NC

C45

TP16
TP15

4Cn5

GND

3

NC

2

Vout

1

NC

NC

NC

R48NCC46

NC

12

Q6

3

2

NC

Charge +

Charge -

C34

NC

+4.0V

1

CD

2

+VREF

3

+VIN

4

-VIN5VOUT1

NC

C41

R49

NC

R50

NC

1

+3.3V

R57

R58

3

Input

VDD4

NC

C35

IC3

NC

VOUT2

GND

V+

R41
NC

NC

NC

R51

Q7

3

2

1

NC

NC

R53

IC5

1

A0

2

A1

3

A2

4

VSS5SDA

EEPROM

R59

3.9k

2

2.2k

6.8k

IC1

Output

ADJ/GND

1

8
7
6

R42
NC

C42
NC

R52

R54
NC

+2.5V

22k

R60

NC

C57

3.3V

+3.3V

VDD3

2
4

Fin

R43

NC

VCC

WP

SCL

1

Q14

3

R61

1k

C36

C37

330u

120

R38

200

R39

SP+

NC

R44

NC

NC

C146

C43

R45

NC

C151

10p

C47

NC

C149

+2.5V

8

7

6

C50

K0.01u

10p

C134

NC

10p

10p

C145

NC

R46

SP+

SP-

NC

C138

10p

C144

NC

R47

SP-

NC

C139

+2.5V

C143

NC

IC4

NC

1

5

VDD

I/O

2

O/I
VSS3

4

CONT

10pC148

C51

R63

R62

2.2k

2.2k

R64

10p

NC

+2.5V

VDD

1

5

I/O

2

O/I
VSS3

CONT

IC6

C140

0.1u

10p

C147

4

0

R65

NC

C58

R66

NC

VDD2

10pC150

R73

3.3M

C62

123

J27p

X1

C63
D6p

25mV p-p

0.7V

K0.1u

0V

NC

R68

K0.1u

57

56

VREFm

RINGING

*MIC/CIDOUT

ROW2

ROW1

55

LSRp/REF

KEY0

JTAG

TP23

12

D12

15

R72

Q8

K1u

C68

C69

51

49

50

52

53

54

AVS2

AVD2

Sense

*CIDIN

LDO1_

*LSR/REF

LDO2_CTRL
LDO1_CTRL

VBAT1

*RST

P17/CHARGE/INT7

P23/ADC1

VDD3

VSS3

P07/SPIDI/PCM_DIN

P06/SPIDO/PCM_DOUT

P05/SPICLK/PCM_CLK

P04/SCL2

P03/SDA2
P02/JTIO
P01/URX

P00/UTX

K0.1u

K0.1u

C74

C75

RDY

KEY1

100R75

C77

VDD1

NC

R76

NC

R67

18

NC

C66

3.3k

R117

3.3k

R71

C67

58

59

60

61

C59

K0.1u

C60

K0.1u

C61

K0.1u

RSSI

10
11
12
13
14
15
16

10u

C64

63

MICp

ADC264ADC0

AGND

1

*INT1/P11

2

VDDIO1

3

VDD1

4

VSS1

5

SDA1/P25

6

SCL1/P24

7

*INT5/VDDE/P15

8

*INT2/P12

9

AVD
AVS
CAP
Xtal1
VSSRF
RFCLKp
RSSI/RFCLKm
VDDRF

K1u
C65

TX DATA

CIDINp

P14/*INT462P13/*INT3

IC7

BBIC

RFCLKd18TDO19RDI20SK21PD1/SIO22LE23P31/PD124P32/PD225P33/PD326P34/PD427TDOD/P35/PD528P36/PD629VSS230VDDIO231VDD232PCM_FSC/*INT0/P10

17

0

L9

LE

SIO

TDO

RDI

SK

RFCLK

RESET

ROW0

ROW0

RX DATA

RFCLK

R74

NC

12

SW1

NC

NC

C76

1.8V

+1.8V

48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33

1k

2

D17

1

C72
K220n

NC

C78

R69

NSA/CLIP

0

R70

TAMIC_CSn

0

+2.5V

2.5V

Q9

3

2

1

10u

K1u

C70

C71

R81

3.3k

SPIDI

C73

SPIDO

SPICLK

K0.1u

TAM_RSTn

TAM_CSn

(2)

10k

10k

R77

R78

R79

1k

R80

1k

NC

NC

C79

J103

J102

J104

(3)

RX

TX

GND

NC: No Components

70

KX-TG9120PDS/KX-TGA910FXS

(1)

(2)
(3)

10.368MHz

2.5V
0V

R30

3.3V

+3.3V

C101

L5

C121

C124

NC

NC

R108

ANT_1

L11

2.2n
1p

L6

0.5p

NC

C125

D10p

180

R109

A_1

82

820

R31

NC

NC

C26

C27

NC

10u

C28

C29

ANT_2

L3

R106

6.8n

2.2n

L10

C118

RF Module

3p

C117

R107

NC

D10p

270

ANT

L4

C119

C120

6.8n

1

2

DA1

3

10p

L7
33n

D10p

C122

NC

A_2

27

28

29

30

32

Q10

3

2

2.2k

R102

1

470

C103NCC104NCC105

+2.5V

NC

C106

1u

NC

C102

R103

C107

NC

NC

C108

RSSI

NC

C110

RFCLK

LE

SK

R104

C109

NC

C111

K1000p
R105

NC

NC

C113NCC114

NC

CLK

C112

NC

J22p

1

2

3

4

5

6

7

8

9

10

C115NCC116

NSA/CLIP

R118

TAM_RSTn

C81

K0.1u

C142

K0.1u

C80

K0.1u

1M

24

25

*LSR

26

LSRp

27

MICh

28

*MIC

29

VREFm

30

VBUF

31

MICp

32

VREFp

1

33

21

23

*RST

AVD2

GPIO222GPIO3

IC8

Fin

GPIO4/PCM_DI

GPIO5/PCM_DO

GPIO6/PCM_CLK

GPIO7/PCM_FSC

2

3

4

19

20

VDD2

VDDIO2

GPO8/PAOUTm

GPO9/PAOUTp

VDD16VDDIO17CLK8*PF

5

17

GPIO018GPIO1

SPI_CLK

R82

C133

VDDPA

SPI_EN

SPI_DO

SPI_DI

AVD1

K0.1u

+2.5V +1.8V

+3.3V

R115

0

R114

16
15
14
13
12
11
10
9

TAMIC_CSn

SPICLK

SPIDO

C84

C85

K0.1u

K0.1u

100k

C83

Beep/Bell signal

K0.1u

K0.1u

C82

ANSWER_ON

MESSAGE

RFCLK

GND19

GND1
ANT2
VCCPA
GND2
GND3
VCC_OC

RF module

GND4
RSSI
SYRI
GND5

GND612SYEN13SYDA14SYCL15GND716RX_DATA

11

NC

RDY

NC

TAM_RSTn

SP+SP-

TAM_CSn

SPICLK
SPIDO
SPIDI

SPIDI

ANSWER_ON

MESSAGE

KEY1
KEY0

ROW2
ROW1
ROW0

C92

31

A_1

IC10

+3.3V

R83

R84

10p

GND18

1k

R85

2.2k

2.7k

R92

2

C93

GND17

C87

R91

1k

Q12

0

10p

C94

GND16

2

R93

R94

0

0

10p

GND15

GND14
GND13
GND12
GND11
GND10

*RESET

RDI

+3.3V

R86

NC

330

3

1

R95

C95

GND9

GND8

C132

C88

ANT1

TXDA

NC

RX DATA

Q11

1

R87

3

1k

22k

NC

C89

K0.1u

C91

Q13

2

R119

220

10p

C96

26

25

24

23

22

21

20

19

18

C126

17

C128NCR110

J150p

C127

R111

NC

K1000p

100

TX DATA

R112

RESET

1k

TDO

NC

C129

SIO

NC

C130NCC131

NC

R88

+2.5V

C86

K0.01u

+3.3V

NC

C90

R90

NC

3

1

R99

10k

R98

R96
0

10p

0R97

10k

R89

1

RDY/*BUSY

2

*RESET

3

*WP

4

NC1

5

NC2

6

VCC

7

GND

8

NC3

9

NC4

NC

10

NC5

11

*CS

12

SCK

13

SI

14

SO

FLASH MEMORY

R120

270

+2.5V

10k

R100

10k

C97

R113

NC

R101

K1000p
D13

D14

IC9

10

12

12

Flat-cable

CN5-5

GND

CN5-4

LED2

CN5-2

ROW1

CN5-1

ROW0

CN5-3

GND

NC19
NC18
NC17
NC16
NC15
NC14
NC13
NC12
NC11
NC10

CN5
CN6

28
27
26
25
24
23
22
21
20
19
18

NC9

17

NC8

16

NC7

15

NC6

CN6-5

VDD

CN6-4

LED1

CN6-3

KEY1

CN6-2

KEY0

CN6-1

ROW2

71

NC: No Components

KX-TG9120PD SCHEMATIC DIAGRAM (Base Unit)

KX-TG9120PDS/KX-TGA910FXS

12.3. Schematic Diagram (Base Unit_Operation)

VDD

CN11-5
CN11-4
CN11-3
CN11-2
CN11-1
CN10-5
CN10-4
CN10-3
CN10-2
CN10-1

GND

LED2T

12

LED2

1 2

SKIP

1 2

ANS_ON

1 2

LED1

1 2

REPEAT

1 2

VOL_UP

1 2

12

1 2

ERASE

1 2

LOCATOR

1 2

VOL_DOWN

KX-TG9120 SCHEMATIC DIAGRAM (Base Unit_Operation)

PLAY

STOP

72

Memo

KX-TG9120PDS/KX-TGA910FXS

73

KX-TG9120PDS/KX-TGA910FXS

12.4. Schematic Diagram (Handset)

Back light OFF: 4.0V (stand by)/3.5V (Talk)

Charge Current

BATTERY+

BATTERY-

L6

C16

TP18

NC

L4

CHARGE+

NC

L5

CHARGE-

TP19

UTX

NC

URX

C45

NC

GND

C46

JTAG

KEY_OUTPUT_0

KEY_OUTPUT_1

KEY_OUTPUT_2

KEY_OUTPUT_3

KEY_OUTPUT_4

KEY_OUTPUT_5

KEY_OUTPUT_6

KEY_OUTPUT_7

KEY_INPUT_0

F1

5.6n

NC

R43

100m

stop_charge

100n

C129

R72

1k

C133

1kR20

1kR21

1kR19

12

#

12

9128127

3122121

6125

12

12

TALK

12

12

12

CLEAR

SP

12

12

12

12

R

KEY_INPUT_1

R54

5.6k

R46

5.6k

16

2

10n

+3.0V

R73

C94

0

4

SOFT_A

INT

SOFT_C

KEY_INPUT_2

Q11

16

10k

NC

Push

BATTERY

C3

K0.1u

K1u

C36

AVS_sense

3

1

C130

R74

C93

*

12

12

12

SW1

1

2

36

BATTERY

12

POWER_KEY

39kR27

POWER_ON

Back light ON: 4.25V

BATTERY

C1

4.0V 330u

ADC3

CHARGE

R7

Q10

220k

D10

3

2

12

1

10kR6

470R5

C

B

E

Q9

D6

12

NC

10k

10k

R62

UTX

URX

NC

JTIO

8

4

5

7

POWER

D1

L1

12

22u

Q1

3

1

2

R49 47m

(When on charge)

RINGER_LED_CTRL

KEY_LED_CTRL

UTX
URX
JTIO
KEY_OUTPUT_0
KEY_OUTPUT_1
KEY_OUTPUT_2
KEY_OUTPUT_3
KEY_OUTPUT_4

KEY_INPUT_0
KEY_INPUT_1

KEY_INPUT_2

DC/DC_Vout_CTRL

+4.0V

DC_I

1s

R57

68

C57

6.3V 330u

DC_CTRL

RF_RESET#

SYDA
SYCL

TP10

R50

F 160k

R51

F 68k

READ#
WRITE#

SCLK

SRAM_CS#
FLASH_CS#
LCD_CS#

SRAM_UB#

DC_Sense

R60

F 220k

3

R61

2

Q15

1

10k

with USB: Not necessary
without USB: Should be mounted

+3.0V

+1.8V

C15

100n

+3.0V

Q8

3

2

R3

1

C48

5.6k

LDO1_CTRLLDO1_CTRL

(Talk Mode)

TX DATA

SO

39

SK

40

DAC/ADC2

41

P3_6/PD6

42

*RD

43

*WR

44

MI/READY

45

SCLK

46

UTX/P0_0

47

URX/P0_1

48

JTIO/P0_2

49

PCM_FSC1/P0_3

50

PCM_FSC0/P0_4

51

PCM_CLK/P0_5

52

PCM_DOUT/P0_6

53

PCM_DIN/P0_7

54

VDDIO2

55

VSS3

56

*DREQ0/*INT0/P1_0

57

*DACK0/*INT1/P1_1

58

ACS1/*DREQ1/*INT2/P1_2

59

ACS0

60

ACS2/*DACK1/*INT3/P1_3

61

*HOLD/*INT4/P1_4

62

VDDE/*HOLDACK/*INT5/P1_5

63

*BE1

64

RX DATA

3.0V

TP12

F 43k

F 18k

+1.8V

Q7

3

2

R4

5p

1

C34

NC

C47

C42

15k

10 2.2u

+4.0V

TP11

R52

NC

C43

10 2.2u

R53

C118

LDO1_Sense

LDO2_CTRL

115kHz

10.368MHz

3.0V
0V

C4
NC

X1

1

C35

7p
50

RSSI

SYEN

38

LE

*BE066SCL2/P3_067SDA268DAB069DAB870DAB171DAB972DAB273DAB1074DAB375DAB1176VSS477VDD278VDDIO379P2_0/PWM0/SPIDI80P2_1/PWM1/SPICLK81P2_2/ADC0/CLK100

65

SRAM_LB#

DC/DC_Vout_CTRL

TXDA

RX_DATA

A21

A20

A19

A18

A17

A16

A15

100R13

10

C2

100n

19

20

21

22

23

24

25

26

27

28

29

RDI

AVS

CAP

AVD

TDO

Xtal1

RSSI

AD1530AD1631AD1732AD1833AD1934AD2035AD2136AD2237AD23

CMPREF

VSSRF

VDDRF

IC1

%%,&

P2_3/ADC183P2_4/SCL184P2_5/SDA185DAB486DAB1287DAB588DAB1389DAB690DAB1491DAB792DAB1593P2_7/DC_CTRL/SPIDO

82

47kR137

47kR138

100nC14

C13

100n

DB3

DB10

DB2

DB9

DB1

DB8

DB0

DB11

LCD_BL_CTRL

LCD_RESET#

KEY_OUTPUT_6

KEY_OUTPUT_7

KEY_OUTPUT_5

1u

2

3.3MR12

SYRI

18

RFCLK

DB4

1.8V

1

VOUT

2

VIN

3

NC1

4

VOUT-SENSE5GND

3

16

17

VSS2

VDD1

47k

R139

DB5

DB12

C5

DB13

IC7

10

100n

DB6

BYPASS

DB14

NC2
VEN

DB7

+3.0V

8

R66

330k

7

C122

6

10n

0.7V

A14

A13

LCD_D/C

10

P3_7/PD711P3_1/PD112P3_5/PD513P3_4/PD414P3_3/PD315P3_2/PD2

DC_I95P1_6/PON/INT696P1_7/CHARGE/INT7

94

DC_I

DC_CTRL

POWER_ON

DB15

1nC44

RSSI

25mVp-p

0V

A9

A8

A12

A11

A10

2

3

5

AD84AD9

AD106AD117AD128AD139AD14

VSS1

AD0/EXT_MEMORY

VREF+/CIDIN+

VREF_HS/CIDOUT

LSR_HS/CIDIN-

LDO2_CTRL
LDO1_CTRL
LDO1_Sense

P2_6/stop_charge98VBAT3/RINGING99DC_stab

DC_Sense

AVS_sense

97

100

C12

DC_Sense

CHARGE

stop_charge

AVS_sense

C114

C119

120R128

SYRI

1

VDDIO1

LSR-/REF

LSR+/REF

ADC3

101

1n

ADC3

ANT1

ANT

27

31

32

A_1

GND1528GND1629GND1730GND18

GND19

1

GND1

1u

NC

2

C115

ANT2

3

VCCPA

4

NC

GND2

1u

5

GND3

C120

C73

NC

470

R127

6

VCC_OC

7

GND4

8

RSSI

9

SYRI

10

GND5

IC20

5)PRGXOH

GND612SYEN13SYDA14SYCL15GND716RX_DATA

11

CLK

SYDA

SYEN

3.3kR123

3.3kR129

18kR124

SYCL

18kR130

26

GND14

25

GND13

24

GND12

23

GND11

22

GND10

21

ANT1

20

*RESET

19

GND9
TXDA
GND8

RX_DATA

3.3kR126

18kR125

22kR121

150k

18

17

R122

NCC72

220R78

TXDA

TX DATA

RF_RESET#

NC

C71

RX DATA

(1)

(2)

(3)

+1.8V+3.0V

Q12

68kR80

E2

3C24

B1

B2

2

5

68kR81

6

10

C6

VBAT1
VBAT2

AGND

VREF-

100n

128

AD7

127

AD6

126

AD5

125

AD4

124

AD3

R14

123

AD2

122

10k

AD1

121
120

*RST

MIC+

VBUF

MIC-

AVD2
AVS2

220nC19

119
118

R135

180

117
116

C7

115

L7

68n

114
113
112
111
110
109
108
107
106
105
104
103

C70

68nC8

C9

R15

100n

5.6

C11
100n

R23
1M

FLASH_RESET#

A7

10n

A6

C128
A5
A4
A3
A2
A1

C127 NC

NC

1n

C651nC66

LDO2_CTRL
LDO1_CTRL

LDO1_Sense

470kR16

102

50

68nC10

R17

470k

E1

C1

Q3

1

E1

2

B1

3C24

16

330R37 2.2kR41

C69

R38

4.7k

10k

R82

1

100kR25

100kR24

6

C1

12

5

D2

B2

E2

(4)

1u

NC

C24

C23

(5)

10n

NC

C68

(6)
(7)

(8)

+3.0V

LED1

LED2

LED5AKLED6

LED3

LED4

AK

AK

A

AK

AK

K

R32

R36

100 R34

100 R35

100

C

E

Q5

330

R30

100 R31

100

100 R33

C

B

E

Q4

B

NC: No Components

+4.0V

1

BOG

234

R136
R70

C

E

KEY_LED_CTRL

RINGER_LED_CTRL

LED7

220

R71

3.3k

220

C

B

B

E

Q13

Q14

74

KX-TG9120PDS/KX-TGA910FXS

A1

A17

DB8

DB7

DB5

DB2

DB12

DB10

FLASH_CS#

E6

F1

F2

F3

*CE

A16

DQ8

DQ10F4DQ12F5DQ14

IC2

RY/*BYA4*WEA5A9A6A13B1A4B2A17B3*WP/ACCB4*RESETB5A8B6A12

R67

100k

A5

A10

A14

A18

WRITE#

FLASH_RESET#

A7

A8

DB2

DB1

DB11

D2

D3

D4A7D5D3D6

D11

NC2

VSS1

IC3

SRAM

A13

A14

WRITE#

DB7A9A10

DB0

E1A0E2

DQ0E3DQ2E4DQ5E5DQ7

D6

A16

A15

D5

A12

A11

D4

A20

A19

D3

A21

A20

D2

A6

A5

D1

A2

A1

C6

A15

A14

C5

A11

A10

C4

A21

C3

A19

A18

C2

A7

A6

C1

A3

A2

+3.0V

R26

100k

NC

R22

A9

A13

LCD_D/C

A6

DB9

DB10

C1D9C2

C3A5C4A6C5D1C6D2D1

D10

B6

DB0

D0

B5

SRAM_CS#

*CE

B4

A5

A4

B3

A4

A3

B2

SRAM_UB#

*UB

B1

DB8

D8

A6

NC1

A5

A3

A2

A4

A2

A1

A3

A1

A0

A2

READ#

*OE

A1

SRAM_LB#

*LB

+3.0V

A11

A12

LCD_CS#
DB15

DB14
DB13
DB12
DB11
DB10
DB9
DB8
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
READ#
WRITE#

R133 NC

A20
LCD_RESET#

R134

0

R133 / R134
with USB: 0
without USB: NC / 0

RA2

0

3456
2
1

RA4

0

45
3
2
1

R79

0

/ NC

1u

C49

1

CN1

RA1

3456
2
1

7
8

3456
2
1

6
7
8

3456
2
1

2

CN1

0

3

CN1

4

CN1

5

CN1

6

CN1

7

7

CN1

8

8

CN1

9

CN1

RA3

10

CN1

0

11

CN1

12

CN1

13

CN1

14

CN1

7

15

CN1

8

16

CN1

17

CN1

RA5

18

CN1

0

19

CN1

20

CN1

21

CN1

22

CN1

7

D/C

23

CN1

8

24

CN1

25

CN1

C50

100n

26

CN1

27

CN1

28

CN1

29

CN1

30

CN1

1u

C40

LCD_BL_CTRL

+4.0V

R59

LED_A

47

1u

C41

R58

1k

LED_K

3

1

2

Q6

DB14

+3.0V

READ#
DB9
DB11

DB13
DB15

C18

(1)

NC

IC6

C126

1

CD

(2)

(3)

C131

C30

D8

12

NC

C26

100n

Sp-phone RX

VOUT2

1u

2

+VREF

GND

1uC29
100nC28

3

+VIN

V+

4

-VIN5VOUT1

27kR4510R44

47kR64

C27
470p
50

+4.0V

1R47

1uC31

1u

C32

SP_TEST2

8

7

12p

C75

6

NC

C132

SP_TEST1

12p

C76

C80

NC

100n

DB1
DB3
DB4
DB6

Beep

DB12
A17

DB4
DB14

DB13
A15
A16
DB5
DB6

1.6V DC supply to Mic

1

10p

C61

C60

270p

2
3
4
5

C33

CN4

10u

NC

C62

C63

270p

C74

1n

TX-AF

F6

G1

*OE

G2

DQ9

G3

DQ11

G4

VCC

G5

DQ13

G6

DQ15

H1

VSS1

H2

DQ1

H3

DQ3

H4

DQ4

H5

DQ6

H6

VSS2

A1A3A2A7A3

A4

C20

100n

E1

VCC2

E2

D12

E3

NC3

E4

NC4

E5

D4

E6

VSS2

F1

D14

F2

D13

F3

A14

F4

A15

F5

D5

F6

D6

NCG1

Flash memory

A8

DB3

VCC1

D15G2NC5G3A12G4A13G5*WEG6D7H1NC6H2A8H3A9H4A10H5A11H6NC7

10kR63

C25

R42

100k

10p

D11

C64

AK

10p

TP20 TP21

33R39
33R40

D4AKD5

100n

1
2

DB15

MIC

REV_TEST2

10p

C79

REV_TEST1

10p

C77

RX-AF

(4)

(5)

(6)
(7)

C651nC66

330R37 2.2kR41

1u

NC

C69

C24

C127 NC

C23

R38

4.7k

10n

NC

C68

AK

1n

C78

(Handset)

(8)

75

NC: No Components

KX-TGA910 SCHEMATIC DIAGRAM (Handset)

KX-TG9120PDS/KX-TGA910FXS

12.5. Schematic Diagram (Charger Unit)

TP3

J1

10R1

1

2

10R3

12R2

12R4

TP1

TP4

TP2

G

SCHEMATIC DIAGRAM (Charger Unit)

76

13.1.1. Component View

13 Printed Circuit Board

13.1. Circuit Board (Base Unit_Main)

77

ANT_2

PbF

L3

R103

R102

C102

Q10

C101

C103

C106

C111

PQUP11410Z

KX-TG7100

C117

DA1

L4

C119

R107

C118

R106

C104

C107

C109

R105

C120

32

1

C108 C105

C110

C112

10

11 16 17

C113

C130

R104

C114

C131

7120
8100
8120

L7

C122

IC10

C124

L5

C121

C116

R108

C115

C49

C132

R2

~~

2

CN2

ANT_1

L6

D1

C36 C32

C31

R38

C33

75

R39

R58

R57

14

C35

R48

R51

Q7

IC2

C30

X1

C34

C45C46

D11

C44

Q6

R50

R49

R53

R54R52

C47

C125

2627

IC1

C37

R109

R112

C127

C126

C129
R111

C128

R110

R80R79

C48

C64

CN4

R56

R55

C65

41

IC5

58

R62

C62

C63

R73

16
17

L9

C76

TP_RLY1

R63
C61

C74

C78

C79
TP23

L2T/TP_RLY3

R59

R60

C50

R61

C59

C51

C60

C75

R75

C138

CN1

J1 J2

TP_RLY5

D2

Q14

1

IC7

32

R89

C144

C1

R1

64

33

R78

L1T/TP_RLY2

R65

C150

Q1

D5
D9

C57

R33

R117

R71

C77

R76

R77

D17

C139

L1R/TP_RLY4

R28

R66

C152

C7

C25

C56

C52

R37

R121

C66

R36

C67

C54

C73

R92

R47

R45

R43

C43

48

C72
R81

R46

C137

C68

49

R44

SA2

SA1

R27

R5
R6

R32

C55

C8

5

8

C9

C71

4

1

C4

R22

R72

R83

R42

C38

R21

R20

R19

R115

C41

C18

C58

R67

C146

R114

C134

D10

C10

L1

C3

R9

R10

TP9

C20

R18

E

Q5

C19

R23

C140

C141

IC6

R64

D6

Q11

R82
R85
R84

9

C85

16

C84

17 24

C133

IC4

C145

C143

R41

1

C135

C149

R40

C83

IC8

C148

R116

C81

E

Q3

D4

C13

Q4

R17

C12

R16

R25

R24

D7

R26

C21

C23

C22

C24

R29

R70

TP10

R87

R86

C82
18

32

C86

25

C91

C80

C142

R118

C151

L2

R7

R8

C17

C15

C6

C16

R4

R3

C14

C5

C136

R34

C53

R35

C69

Q8

C70

Q9

D12

C42

IC3

C40

C39

D16

D3

D8

R68

C154

R90

C90

D15

J3
J4

R14

R11

C11

R13

SW1

R74

R69

C147

C87

C88

1

R88

C89

14

R91

Q2

R119

C92

R12

C93

Q12 Q13

R93

R94

R100

IC9

C2

C28

R30

C29

R120

D13

R98

D14

R96

C94

R99

C96

C95

28

15

C27

R31

C26

C97

CN6

CN5

R101

R95

1

1

R97

R113

A

C72: RESET
(IC7 pin45)

KX-TG9120 CIRCUIT BOARD (Base Unit (Component View))

IC8
pin16
(SP+)

IC8
pin14
(SP-)

KX-TG9120PDS/KX-TGA910FXS

13.1.2. Flow Solder Side View

KX-TG9120PDS/KX-TGA910FXS

78

CLK

(10.368 MHz)

CLK

A_2

CHARGE

ANT

BLACK

for JIG

RX TXGND

RX TX GND

A_1

RED

VDD3

DC_IN

VDD3

(3.3 V)

VDD4

DCM

BUZ

VDD1

(1.8 V)

8120
8100
7120
KX-TG7100

SP+ SP-

SP

432

L2R

1

2

L2T

L1R

VDD2

(2.5 V)

VDD1

VDD2

PbF

PQUP11410Z

LINE_DC

L1T

A

KX-TG9120 CIRCUIT BOARD (Base Unit (Flow Solder Side View))

13.2. Circuit Board (Base Unit_Operation)

13.2.1. Component View

KX-TG9120PDS/KX-TGA910FXS

PbF

LOCATOR

GND

ERASE

REPEAT

PQUP11412Z

STOP

VOL_UP

LED1

PLAY

ANS_ON

LED2

SKIP

LED2T

VDD

CN11

A

CN10

VOL_DOWN

KX-TG8120

KX-TG9120 CIRCUIT BOARD (Base Unit_Operation (Component View))

79

KX-TG9120PDS/KX-TGA910FXS

13.2.2. Flow Solder Side View

A

PQUP11412Z

KX-TG8120

CN10

CN11

PbF

KX-TG9120 CIRCUIT BOARD (Base Unit_Operation (Flow Solder Side View))

80

13.3. Circuit Board (Handset)

13.3.1. Component View

81

C129

(+)

TP18

CHARGE+

CHARGE-

TP19

L4

L5

TP18

TP19

BAT+ BATTQ12_RESET

BAT

Q10

TP20

C69

D11

TP21

R40

C64

R39

D2

C16

R24

R43

L6

R25

C46

BAT

BAT-

(IC1 pin120)

F1

Q9

D10

R5

C130

D6

R6

R72

R7

C66

C65

C68

C70

C8

C24

C23

R38

R41

R37

C128

R23

Q3 Q12

C93

R21

R74

R20

UTX

URX

C45

UTXURX

for JIG

(1.8V)

TP12

Q15

R12

R137

R61

R60

C14

C42

C13

R51

R50

65

C2

C20

C4
C35

C34

R3

R4

Q7

Q8

R35

TP12

R31
R33

64

C47

R32

Q5

C15

R62

JTAG

R19

SCLK

39

SRAM

IC3

R54

R46

R17

R16

BAT

Q11

C36

C12

102

C133

R15
103

C11

C9

L7

C7

R135

C127

C19

128

R14

R80

138

Q13 Q14

R73

C6
R81

R70

C94

R82

Q4

R30

GND

R138

R139

R27

C10

IC1

C5

R13

R71

X1

GND

C43

R36
R34

(3.0V)

TP11

R53

C48

L1

R52

TP11

C3

FLASH

IC2

R22 R26 R67

C1

D1

R57

Q1

R49

R42

R63

C18

C61

C25

25

C60

C33

C63

(4.0V)

TP10

C57

34

CN4

TP10

C74

1

REV_TEST2

KX-TG9120/TGA910

PQUP11445Z

POWER

C122

R66

IC7

C118

C80

C28

C131

R44

C26

R45 R64

C27

IC6

C62

R47

C32

C31

CLK (10.368MHz)

ANT

32 27

1

C115

C114

C120

C119

C44

CLK

R128

C29

C30

R127
C126

C73

10

D8

IC20

11 16

R123

R129
R124

R126
R130

R125

26

17

C71

R122

R121

C72

R78

SP_TEST1

ANT1

SP

C132

C76

SP

C77

C75

SP_TEST2

REV

D41

D51

KX-TGA910 CIRCUIT BOARD (HANDSET (Component View))

REV_TEST1

REV

C79

C78

A

KX-TG9120PDS/KX-TGA910FXS

82

MIC

R

INT

13.3.2. Flow Solder Side View

KX-TG9120PDS/KX-TGA910FXS

R136

R58

R134

R133

RA5

C41

R79

Q6

C49

RA1

C40

C50

RA4 RA3 RA2

R59

CN1

130

LED7

LED-K

LED-A

7

4

1

SP

TALK

SOFT_A

LED1

LED3LED5

0

8

5

2

SW1

PbF

LED4LED6

LED2

#

9

36

SOFT_C

POWER_KEY

CLEAR

KX-TGA910 CIRCUIT BOARD (HANDSET (Flow Solder Side View))

13.4. Circuit Board (Charger Unit)

13.4.1. Component View

R1

KX-TG9120PDS/KX-TGA910FXS

2

J1

13.4.2. Flow Solder Side View

PbF

2

TP4

PQUP11413Z

for_ PQLV30045ZA

1

CIRCUIT BOARD (Charger Unit (Component View))

BLACK RED

for_ PQLV30045ZA

1

PQUP11413Z

PbF

BLACK

RED

TP1TP2

R3

R4

R2

A

TP3

CIRCUIT BOARD (Charger Unit (Flow Solder Side View))

A

83

KX-TG9120PDS/KX-TGA910FXS

14 Appendix Information of Schematic Diagram

14.1. CPU Data (Base Unit)

14.1.1. IC7 (BBIC)

Pin No. Pin name I/O Connection at Normal mode at Reset mode

1 *INT1n/ P11 D,O RLY O I-PU
2 VDDIO1 - VDDIO - ­3 VDD1 - VDD - ­4 VSS1 - VSS - ­5 SDA1/P25 D,I/O SDA I/O I
6 SCL1/P24 D,O SCL O I
7 *INT5/VDDE/P15 D,O P1[5] O-L O-H
8 *INT2/P12 D,O SP_AMP O-H I-PU

9 AVD - AVD - ­10 AV S - AVS - ­11 CAP A,I CAP I I
12 Xtal1 A,I Xtall I ­13 VSSRF - VSSRF - ­14 RFCLKp A,O RFCLKp O Hi-Z
15 RSSI / RFCLKm A,I RSSI I Hi-Z
16 VDDRF - VDDRF - ­17 RFCLKd D,O RFCLKd O O-L
18 TDO A,O TDO O ­19 RDI D,I RDI I I
20 SK D,I/O SK - O-L
21 PD1 / SIO D,I/O SIO - I-PD
22 LE D,I/O LE O O-H
23 P31 / PD1 D, I/O RESET O I-PD
24 P32 / PD2 D,I/O ROW0 I I-PD
25 P33 / PD3 D,I/O ROW1 I I-PD
26 P34 / PD4 D,I/O ROW2 I I-PD
27 TDOD/ P35 / PD5 D,O KEY0 O I-PD
28 P36 / PD6 D,O KEY1 O I-PD
29 VSS2 - VSS - ­30 VDDIO2 - VDDIO - ­31 VDD2 - VDD - ­32 PCM_FSC / INT0 / P10 D, I/O RDY I I-PU
33 P00 / UTX D,I/O UTX O I-PU
34 P01 / URX D,I/O URX O I-PU
35 P02 / JTIO D,I/O JTIO O I-PU
36 P03 / SDA2 D, I/O TAM_CSn O I-PU
37 P04 / SCL2 D,O TAM_RSTn O I-PU
38 P05 / SPICLK/PCM_CLK D, I/O SPICLK O I-PU
39 P06/ SPIDO/ PCM_DOUT D, I/O SPIDO O I-PU
40 P07 /SPIDI/ PCM_DIN D, I/O SPIDI I I-PU
41 VSS3 - VSS - ­42 VDD3 - VDD - ­43 P23 / ADC1 I ADC1 I I
44 P17 / CHARGE / INT7 I CHARGE I I-PD
45 *RST I RSTn I I-PU
46 VBAT1 A,I VBAT1 I I
47 LDO1_CTRL D,O LDO1_CTRL O O-H
48 LDO2_CTRL D,O LDO2_CTRL O O-H
49 LDO1_Sense D,I LDO1_Sense I O-L
50 AVS2 - AVS ­51 AVD2 - AVD - ­52 *CIDIN A,I CIDINn I I
53 *LSR / REF A,O REF O O
54 LSRp / REF A,O LSRp O O
55 RINGING A,I RINGING I I
56 *MIC / CIDOUT A,O CIDOUT O O
57 VREFm - VREFm - ­58 AGND A,O AGND O O
59 MICp A,I MICp I I

84

KX-TG9120PDS/KX-TGA910FXS

Pin No. Pin name I/O Connection at Normal mode at Reset mode

60 CIDINp A,I CIDINp I I
61 P14 / *INT4 D,O HOOK O I
62 PULSE_CTRL D,O Q2_ON - Q2_OFF
63 ADC2 A,I ADC2 I I
64 ADC0 A,I ADC0 I I

85

KX-TG9120PDS/KX-TGA910FXS

14.2. CPU Data (Handset)

14.2.1. IC1 (BBIC)

Pin No. Pin name I/O Connection at Normal mode at Reset mode

1 VDDIO - VDDIO - -

2VSS - VSS - -

3 AD8 D_O AD8 O_0/1 O-0/1

4 AD9 D_O AD9 O_0/1 O-0/1

5 AD10 D_O AD10 O_0/1 O-0/1

6 AD11 D_O AD11 O_0/1 O-0/1

7 AD12 D_O AD12 O_0/1 O-0/1

8 AD13 D_O AD13 O_0/1 O-0/1

9 AD14 D_O AD14 O_0/1 O-0/1
10 P3[7]/PD7 D_O P3[7] O_0/1 O-Hi-Z
11 P3[1]/PD1 D_O P3[1] O_0/1 O-Hi-Z
12 P3[5]/PD5 D_O P3[5] O_0 O-Hi-Z
13 P3[4]/PD4 D_O P3[4] O_0/1 O-Hi-Z
14 P3[3]/PD3 D_O P3[3] O_0/1 O-Hi-Z
15 P3[2]/PD2 D_O P3[2] O_0 O-Hi-Z
16 VDD - VDD - ­17 VSS - VSS - ­18 RFCLK D_O RFCLK O_0/1 O-0
19 VDDRF - VDDRF - ­20 VSSRF - VSSRF - ­21 Xtal1 A_I Xtal1 I I
22 CAP A_I CAP I I
23 AV S - AVS - ­24 AV D - AVD - ­25 RSSI I RSSI I I
26 RDI D_I RDI D_I I(dig)
27 CMPREF A_I CMPREF D_O I
28 TDO DO/AO TDO DO Hi-Z(dig)
29 AD15 D_O AD15 O_0/1 O-0/1
30 AD16 D_O AD16 O_0/1 O-0/1
31 AD17 D_O AD17 O_0/1 O-0/1
32 AD18 D_O AD18 O_0/1 O-0/1
33 AD19 D_O AD19 O_0/1 O-0/1
34 AD20 D_O AD20 O_0/1 O-0/1
35 AD21 D_O AD21 O_0/1 O-0/1
36 AD22 D_O AD22 O_0/1 O-0/1
37 AD23 D_O AD23 O_0/1 O-0/1
38 LE D_O LE O_0/1 O-0
39 SO D_O SO O_0/1 O-Hi-Z
40 SK D_O SK O_0/1 O-0
41 DAC/ADC2 A_I ADC2 A_I I
42 P3[6]/PD6 D_O P3[6] O_0/1 O-Hi-Z
43 RDN D_O RDN O_0/1 O-1
44 WRN D_O WRN O_0/1 O-1
45 MI/READY D_IPU READY I-PU_0/1 I-PU
46 SCLK D_O SCLK O_0/1 O-1
47 UTX/P0[0] D_O UTX O-PU_0/1 I-PU
48 URX/P0[1] D_I URX I_0/1 I
49 JTIO/P0[2] D_IPU JTIO I-PU_0/1 I-PU
50 PCM_FSC1/P0[3] D_I/O P0[3] I_O_0 I-PU
51 PCM_FSC0/P0[4] D_I/O P0[4] I_O_0 I-PU
52 PCM_CLK/P0[5] D_I/O P0[5] I_O_0 I-PU
53 PCM_DOUT/P0[6] D_I/O P0[6] I_O_0 I-PU
54 PCM_DIN/P0[7] D_I/O P0[7] I_O_0 I-PU
55 VDDIO - VDDIO - ­56 VSS - VSS - ­57 DREQ0n/INT0n/P1[0] D_I/O INT0n/P1[0] I-PU_0/1 I-PU
58 DACK0n/INT1n/P1[1] D_I INT1n/P1[1] I-PU_0/1 I-PU
59 ACS1/DREQ1n/INT2n/

P1[2]

60 ACS0 D_O ACS0 O_0/1 O-1

D_O ACS1 O_0/1 I-PU

86

KX-TG9120PDS/KX-TGA910FXS

Pin No. Pin name I/O Connection at Normal mode at Reset mode

61 ACS2/DACK1n/INT3n/

D_O ACS2 O_0/1 I-PU

P1[3]
62 HOLDn/INT4n/P1[4] D_I INT4n/P1[4] I-PU_0/1 I-PU
63 VDDE/HOLDACKn/

D_I/O P1[5] O_0 O-1

INT5n/P1[5]
64 BE1n D_O BE1n O_0/1 O-1
65 BE0n D_O BE0n O_0/1 O-1
66 SCL2/P3[0] D_O0/1 P3[0] O_0/1 O-H
67 SDA2 D_O SDA2 O_0 I
68 DAB0 D_I/O D0 O/I_0/1 O-1
69 DAB8 D_I/O D8 O/I_0/1 O-1
70 DAB1 D_I/O D1 O/I_0/1 O-1
71 DAB9 D_I/O D9 O/I_0/1 O-1
72 DAB2 D_I/O D2 O/I_0/1 O-1
73 DAB10 D_I/O D10 O/I_0/1 O-1
74 DAB3 D_I/O D3 O/I_0/1 O-1
75 DAB11 D_I/O D11 O/I_0/1 O-1
76 VSS D_I/O VSS - ­77 VDD D_I/O VDD - ­78 VDDIO D_I/O VDDIO - ­79 P2[0]/PWM0/SPIDI D_O PWM0 O_0/1 I
80 P2[1]/PWM1/SPICLK D_I/O P2[1] I/O_0 I
81 P2[2]/ADC0/CLK100 D_O P2[2] O_0/1 I
82 P2[3]/ADC1 D_O P2[3] O_0/1 I
83 P2[4]/SCL1 D_O/I P2[4] I/O_0 I
84 P2[5]/SDA1 D_I/O P2[5] I/O_0 I
85 DAB4 D_I/O DAB4 O/I_0/1 O-1
86 DAB12 D_I/O DAB12 O/I_0/1 O-1
87 DAB5 D_I/O DAB5 O/I_0/1 O-1
88 DAB13 D_I/O DAB13 O/I_0/1 O-1
89 DAB6 D_I/O DAB6 O/I_0/1 O-1
90 DAB14 D_I/O DAB14 O/I_0/1 O-1
91 DAB7 D_I/O DAB7 O/I_0/1 O-1
92 DAB15 D_I/O DAB15 O/I_0/1 O-1
93 P2[7]/DC_CTRL/SPIDO D_I/O P2[7] O_0/1 O-0
94 DC_I D_I/O DC_I I I
95 P1[6]/PON/INT6 D_I PON I I-PD(160k pull down)
96 P1[7]/CHARTGE/INT7 D_I CHARGE I I-PD(160k pull down)
97 P2[6]/stop_charge A_O P2[6] O_0 O-0
98 VBAT3/RINGING A_I VBAT3 I I
99 DC_stab A_I DC_stab I O

100 DC_Sense A_I DC_Sense I I
101 AVS_sense A_I AVS_Sense I I
102 ADC3 A_I ADC3 I I
103 LDO1_Sense A_I LDO1_Sense I I
104 LDO1_CTRL A_I LDO1_CTRL O O-1
105 LDO2_CTRL A_I LDO2_CTRL O O-0
106 VBAT2 A_I VBAT2 I I
107 VBAT1 A_I VBAT1 I I
108 AVS2 A_O AVS2 - ­109 AVD2 A_O AVD2 - ­110 LSR+/REF A_I LSR+ HIGH_IMP O
111 LSR-/REF A_I LSR- HIGH_IMP O
112 LSR_HS/CIDIN- - LSR_HS HIGH_IMP O
113 VREF_HS/CIDOUT - VREF_HS HIGH_IMP O
114 MIC- A_O MIC- HIGH_IMP I
115 VREF- A_O VREF- - O
116 VBUF A_O VBUF HIGH_IMP O
117 AGND A_O AGND HIGH_IMP O
118 MIC+ A_I MIC+ HIGH_IMP I
119 VREF+/CIDIN+ O VREF+ HIGH_IMP I
120 RSTn O RSTn I I-PU(80k pull up)
121 AD0/EXT_MEMORY O EXT_MEMORY D_IPD I_PD
122 AD1 I AD1 O_0/1 O-0/1
123 AD2 I AD2 O_0/1 O-0/1
124 AD3 D_O AD3 O_0/1 O-0/1
125 AD4 D_O AD4 O_0/1 O-0/1

87

KX-TG9120PDS/KX-TGA910FXS

Pin No. Pin name I/O Connection at Normal mode at Reset mode

126 AD5 D_O AD5 O_0/1 O-0/1
127 AD6 D_O AD6 O_0/1 O-0/1
128 AD7 D_O AD7 O_0/1 O-0/1

88

14.3. Terminal Guide of the ICs, Transistors and Diodes

14.3.1. Base Unit

KX-TG9120PDS/KX-TGA910FXS

14.3.2. Handset

89

KX-TG9120PDS/KX-TGA910FXS

15 Exploded View and Replacement Parts List

15.1. Cabinet and Electrical Parts (Base Unit)

90

15.2. Cabinet and Electrical Parts (Handset)

KX-TG9120PDS/KX-TGA910FXS

Note:

(*1) This cable is fixed by soldering. Refer to Fix the LCD to the Main P.C.Board (Handset) (P.57).
(*2) The rechargeable Ni-MH battery P03P (HHR-4EPT, Capacity: up to 750 mAh) is available through sales route of Panasonic.

(*3) Attach the spacer (No. 123) to the exact location described above.

91

KX-TG9120PDS/KX-TGA910FXS

15.3. Cabinet and Electrical Parts (Charger Unit)

92

15.4. Accessories and Packing Materials

15.4.1. KX-TG9120PDS

KX-TG9120PDS/KX-TGA910FXS

93

KX-TG9120PDS/KX-TGA910FXS

15.4.2. KX-TGA910FXS

94

15.5. Replacement Parts List

1. RTL (Retention Time Limited)

Note:

The marking (RTL) indicates that the Retention Time
is limited for this item.
After the discontinuation of this assembly in produc­tion, the item will continue to be available for a specific
period of time. The retention period of availability is
dependant on the type of assembly, and in accor­dance with the laws governing part and product reten­tion. After the end of this period, the assembly will no
longer be available.

2. Important safety notice

Components identified by the mark indicates special
characteristics important for safety. When replacing any
of these components, only use specified manufacture’s
parts.

3. The S mark means the part is one of some identical parts.
For that reason, it may be different from the installed part.

4. ISO code (Example: ABS-94HB) of the remarks column
shows quality of the material and a flame resisting grade
about plastics.

5. RESISTORS & CAPACITORS
Unless otherwise specified;

All resistors are in ohms (Ω) K=1000Ω, M=1000kΩ
All capacitors are in MICRO FARADS (µF)P=µµF

*Type & Wattage of Resistor

15.5.1. Base Unit

15.5.1.1. Cabinet and Electrical Parts

Ref.

No.
1 PQKM10713Z1 CABINET BODY PS-HB
2 PQGG10410Y1 GRILLE ABS-HB
3 PQKE10436Y2 CASE, CHARGE TERMINAL PS-HB
4 PQKE10454Z1 HOLDER, CHARGETERMINAL (L) POM-HB
5 PQKE10455Z1 HOLDER, CHARGETERMINAL (R) POM-HB
6 PQJT10241Y CHARGE TERMINAL (L)
7 PQJT10242Y CHARGE TERMINAL (R)
8 L0AA04A00028 SPEAKER
9 PQHR11082Z GUIDE, SPEAKER POM-HB

Part No. Part Name & Description Remarks

KX-TG9120PDS/KX-TGA910FXS

Ref.

No.
10 PQBC10469Y2 BUTTON, NAVIGATOR KEY ABS-HB
11 PQHR11209Z GUIDE, BUTTON POM-HB
12 PQBC10467Z1 BUTTON, PLAY ABS-HB
13 PQBC10463Y2 BUTTON, ANSWER ON ABS-HB
14 PQSX10316Y KEYBOARD SWITCH
15 PQKF10703Z1 CABINET COVER PS-HB
16 PQHA10023Z RUBBER PARTS, FOOT
17 PQGT19339Z NAME PLATE

Part No. Part Name & Description Remarks

15.5.1.2. Main P.C.Board Parts

Note:

(*1) When replacing IC5, IC7, or IC9, data needs to be writ­ten to them with PQZZTG9120PD. Refer to Base Unit
(P.65) of Things to Do after Replacing IC.
(*2) When replacing IC8, refer to How to Replace the LLP
(Leadless Leadframe Package) IC (P.51).

Ref.

No.
PCB1 PQWP19120PDH MAIN P.C.BOARD ASS'Y (RTL)

IC1 C0CBAYG00009 IC
IC5 PQWICD300EHR IC (EEPROM) (*1)
IC6 C0JBAS000249 IC
IC7 C1CB00001885 IC (BBIC) (*1) S
IC8 C1CB00002427 IC (*2)
IC9 C3FBMZ000004 IC (FLASH MEMORY)(*1)

Q2 B1ABCE000009 TRANSISTOR(SI)
Q3 B1ACGP000007 TRANSISTOR(SI)
Q4 PQVTBF822T7 TRANSISTOR(SI)
Q5 2SD1994A TRANSISTOR(SI)
Q8 B1ADGE000004 TRANSISTOR(SI)
Q9 B1ADGE000004 TRANSISTOR(SI)
Q10 B1ADGE000004 TRANSISTOR(SI)
Q11 B1ADCF000040 TRANSISTOR(SI)
Q12 UN5213 TRANSISTOR(SI) S
Q13 UN5213 TRANSISTOR(SI) S
Q14 B1ADCF000040 TRANSISTOR(SI)

D3 B0EDER000009 DIODE(SI)
D4 PQVDRLZ20A DIODE(SI) S
D9 1SS355 DIODE(SI) S
D12 MA112 DIODE(SI) S
D13 1SS355 DIODE(SI) S
D14 1SS355 DIODE(SI) S
DA1 B0DDCM000001 DIODE(SI)

L1 PQLQXF330K COIL S
L2 PQLQXF330K COIL S
L3 MQLRF6N8JFB COIL
L4 MQLRF6N8JFB COIL
L7 PQLQR2M33NKT COIL S
L10 ELJRF2N2ZFB COIL S
L11 ELJRF2N2ZFB COIL S

CN1 K2LB102B0053 JACK, MODULAR
CN2 K2ECYB000001 JACK, DC

R1 ERJ2GEJ103 10K
R3 ERJ3GEYJ184 180K
R4 ERJ3GEYJ105 1M
R5 ERJ3GEYJ184 180K
R6 ERJ3GEYJ105 1M
R8 ERJ3GEYJ104 100K
R10 ERJ3GEYJ104 100K
R11 PQ4R18XJ100 10 S
R12 ERJ3GEYJ103 10K
R13 ERJ3GEYJ681 680
R14 ERJ3GEYJ104 100K

Part No. Part Name & Description Remarks

(ICs)

(TRANSISTORS)

(DIODES)

(COILS)

(JACKS)

(RESISTORS)

95

KX-TG9120PDS/KX-TGA910FXS

Ref.

No.
R15 PQ4R10XJ272 2.7K S
R16 ERJ3GEYJ103 10K
R17 ERJ3GEYJ222 2.2K
R18 ERJ3GEYJ273 27K
R19 ERJ3GEYJ822 8.2K
R20 ERJ3GEYJ272 2.7K
R21 ERJ12YJ120 12
R22 ERJ12YJ270 27
R23 ERJ3GEYJ104 100K
R24 ERJ3GEYJ473 47K
R27 ERJ3GEYJ104 100K
R28 ERJ3GEYJ474 470K
R29 ERJ2GEJ560X 56
R30 ERJ3GEYJ820 82
R31 ERJ3GEYJ821 820
R32 ERJ3GEYJ104 100K
R33 ERJ2GEJ102 1K
R34 ERJ3GEYJ104 100K
R35 ERJ3GEYJ102 1K
R36 ERJ2GEJ184 180K
R38 ERJ2RKF1200 120
R39 ERJ2RKF2000 200
R55 ERJ1WYJ220 22
R56 ERJ1WYJ220 22
R57 ERJ2GEJ392 3.9K
R58 ERJ2GEJ682 6.8K
R59 ERJ3GEYJ222 2.2K
R60 ERJ2GEJ223 22K
R61 ERJ2GEJ102 1K
R62 ERJ2GEJ222 2.2K
R63 ERJ2GEJ222 2.2K
R65 ERJ3GEY0R00 0
R67 ERJ2GEJ180 18
R69 ERJ3GEY0R00 0
R70 ERJ3GEY0R00 0
R71 ERJ2GEJ332 3.3K
R72 ERJ2GEJ150 15
R73 ERJ2GEJ335 3.3M
R75 ERJ2GEJ101 100
R76 ERJ2GEJ102 1K
R77 ERJ2GEJ103 10K
R78 ERJ2GEJ103 10K
R79 ERJ2GEJ102 1K
R80 ERJ2GEJ102 1K
R81 ERJ2GEJ332 3.3K
R82 ERJ3GEYJ104 100K
R83 ERJ2GEJ102 1K
R84 ERJ2GEJ272 2.7K
R85 ERJ2GEJ222 2.2K
R86 ERJ2GEJ223 22K
R87 ERJ3GEYJ102 1K
R89 ERJ2GEJ103 10K
R91 ERJ3GEYJ331 330
R92 ERJ2GEJ102 1K
R93 ERJ2GE0R00 0
R94 ERJ2GE0R00 0
R95 ERJ2GE0R00 0
R96 ERJ2GE0R00 0
R97 ERJ2GE0R00 0
R98 ERJ2GEJ103 10K
R99 ERJ2GEJ103 10K
R100 ERJ3GEYJ103 10K
R101 ERJ3GEYJ100 10
R102 ERJ3GEYJ222 2.2K
R103 PQ4R10XJ471 470 S
R106 ERJ3GEYJ271 270
R109 ERJ3GEYJ181 180
R111 ERJ2GEJ101 100
R112 ERJ2GEJ102 1K
R114 ERJ2GE0R00 0
R116 ERJ2GEJ180 18
R117 ERJ2GEJ332 3.3K
R118 ERJ2GEJ105X 1M

Part No. Part Name & Description Remarks

Ref.

No.
R119 ERJ2GEJ221 220
R120 ERJ2GEJ271 270
J4 ERJ3GEY0R00 0
L9 ERJ2GE0R00 0

C3 F1B2H152A048 0.0015
C4 F1B2H152A048 0.0015
C5 ECUV1H102KBV 0.001
C6 ECUV1H102KBV 0.001
C7 ECUV1H100DCV 10P
C8 ECUV1H100DCV 10P
C9 ECKD2H681KB 680P S
C10 ECKD2H681KB 680P S
C14 ECUV1H472KBV 0.0047
C17 PQCUV1A225KB 2.2
C19 ECUV1H100DCV 10P
C22 PQCUV1A105KB 1
C23 ECUV1C563KBV 0.056
C25 ECUV1H103KBV 0.01
C27 ECEA1HKA100 10
C31 PQCUV1A225KB 2.2
C32 ECA1CM101 100P
C36 ECEA0JSJ331 330 S
C37 ECUV1H100DCV 10P
C48 ECUV1H100DCV 10P
C49 ECUV1H100DCV 10P
C50 ECJ0EB1C103K 0.01
C51 F1G1A1040003 0.1
C52 ECUV1H221JCV 220P
C53 ECUV1H221JCV 220P
C54 ECUE1C223KBQ 0.022 S
C55 F1G1A1040003 0.1
C56 ECUV1C104KBV 0.1
C59 F1G1A1040003 0.1
C60 F1G1A1040003 0.1
C61 F1G1A1040003 0.1
C62 ECJ0EC1H270J 27P
C63 ECUV1H060DCV 6P
C64 ECEA1CKS100 10
C65 ECJ0EB0J105K 1
C67 F1G1A1040003 0.1
C68 ECJ0EB0J105K 1
C70 ECUV1A105KBV 1
C71 ECEA1CKS100 10
C72 F1G1A2240008 0.22
C73 F1G1A1040003 0.1
C74 F1G1A1040003 0.1
C75 F1G1A1040003 0.1
C80 F1G1A1040003 0.1
C81 F1G1A1040003 0.1
C82 F1G1A1040003 0.1
C83 ECUV1C104KBV 0.1
C84 ECUV1C104KBV 0.1
C85 F1G1A1040003 0.1
C86 ECJ0EB1C103K 0.01
C89 F1G1A1040003 0.1
C92 ECUE1H100DCQ 10P S
C93 ECUE1H100DCQ 10P S
C94 ECUE1H100DCQ 10P S
C95 ECUE1H100DCQ 10P S
C96 ECUE1H100DCQ 10P S
C97 ECUE1H102KBQ 0.001 S
C102 PQCUV1A105KB 1
C110 ECUE1H102KBQ 0.001 S
C112 ECJ0EC1H220J 22P
C117 ECUV1H030CCV 3P
C118 ECUV1H100DCV 10P
C119 ECUE1H100DCQ 10P S
C120 ECUV1H100DCV 10P
C124 ECUV1H010CCV 1P
C125 ECUV1H100DCV 10P
C126 F1G1H151A541 150P S
C127 ECUE1H102KBQ 0.001 S

Part No. Part Name & Description Remarks

(CAPACITORS)

96

KX-TG9120PDS/KX-TGA910FXS

Ref.

No.
C133 F1G1A1040003 0.1
C135 ECUE1H100DCQ 10P S
C136 ECUE1H100DCQ 10P S
C137 ECUE1H100DCQ 10P S
C140 ECJ0EB1A104K 0.1
C141 ECJ0EB1A563K 0.056
C142 F1G1A1040003 0.1
C144 ECUE1H100DCQ 10P S
C145 ECUE1H100DCQ 10P S
C146 ECUE1H100DCQ 10P S
C147 ECUE1H100DCQ 10P S
C148 ECUV1H100DCV 10P
C149 ECUE1H100DCQ 10P S
C150 ECUE1H100DCQ 10P S
C151 ECUE1H100DCQ 10P S
L6 ECUV1H0R5CCV 0.5P

E1 PQSA10187Y ANTENNA
E2 WBX05SH-4SS LEAD WIRE, PARALLEL WIRE
IC10 PQLP10263Z RF UNIT
SA1 J0LF00000026 VARISTOR (SURGEABSORBER)
X1 H0D103500003 CRYSTAL OSCILLATOR

Part No. Part Name & Description Remarks

(OTHERS)

15.5.1.3. Operational P.C.Board parts

Ref.

No.
PCB2 PQWP28120EH OPERATIONAL P.C.BOARD ASS'Y

LED1 B3AAB0000144 LED
LED2 B3AAB0000144 LED

Part No. Part Name & Description Remarks

(RTL)
(LEDS)

15.5.2. Handset

15.5.2.1. Cabinet and Electrical Parts

Ref.

No.
101 PQGP10314Z1 PANEL PMMA-HB
102 PQHS10747Y TAPE,DOUBLE SIDED(LCD)
103 PQHS10748Z TAPE,DOUBLESIDED(BUTTON)
104 PQKM10733Z1 CABINET BODY ABS-HB
105 PQHS10726Y SPACER, LCD
106 PQHS10467Z COVER, SP NET
107 L0AD02A00028 RECEIVER
108 PQHR11247Z GUIDE, RECEIVER ABS-HB
109 PQSX10334Z KEYBOARD SWITCH
110 PQBC10470Y1 BUTTON, JOYSTICK ABS-HB
111 PQWE10045Y BATTERY TERMINAL
112 PQJT10239Z CHARGE TERMINAL (L)
113 PQJT10240Z CHARGE TERMINAL (R)
114 PQHR11196Z OPTIC CONDUCTIVE PARTS, LED

115 PQHR11198Z GUIDE, SPEAKER ABS-HB
116 PQHG10729Z RUBBER PARTS, SPEAKER
117 L0AD02A00026 SPEAKER
118 PQKE10439Z2 COVER, E/P
119 PQJC10056X BATTERY TERMINAL
120 PQKF10721Z1 CABINET COVER ABS-HB
121 PQQT23182Z LABEL, ATTENTION
122 PQGT19297Z NAME PLATE
123 PQHS10561Y SPACER, BATTERY COVER
124 PQKK10595W7 LID, BATTERY COVER ABS-HB
125 PQHS10622Z SPACER, SP NET

Part No. Part Name & Description Remarks

LENS

PS-HB

15.5.2.2. Main P.C.Board Parts

Note:

(*1) Reconfirm the model No. written on the handset’s name
plate when replacing PCB100. Because the model No. of
the optional handset may differ from the included handset.

(*2) When replacing IC1, data needs to be written to them
with PQZZTG9120PD. Refer to Handset (P.65) of Things
to Do after Replacing IC.
(*3) Before replacing IC2, check item (E) in Check Point
(Handset) (P.45).
(*4) It is impossible to exchange IC2 or IC3. It should
exchange ass'y of PCB100 when replacing the IC.

Ref.

No.

PCB100 PQWPGA910FXR MAIN P.C.BOARD ASS'Y (RTL)

IC1 C1CB00001830 IC (BBIC) (*2)
IC2 PQWPGA910FXR IC (SRAM)(*3) (*4)
IC3 PQWPGA910FXR IC (FLASH MEMORY)(*4)
IC6 C1BB00000265 IC
IC7 C0DBZFD00054 IC

Q1 PQVTFDN335N TRANSISTOR(SI) S
Q3 XP0421600L TRANSISTOR(SI)
Q4 PSVTDTC143X TRANSISTOR(SI) S
Q5 PSVTDTC143X TRANSISTOR(SI) S
Q6 B1ABGE000006 TRANSISTOR(SI)
Q7 B1ADGE000004 TRANSISTOR(SI)
Q8 B1ADGE000004 TRANSISTOR(SI)
Q9 UN9219J TRANSISTOR(SI) S
Q10 B1ADGE000004 TRANSISTOR(SI)
Q11 B1ABCF000103 TRANSISTOR(SI)
Q12 XP0431600L TRANSISTOR(SI)
Q13 PSVTDTC143X TRANSISTOR(SI) S
Q14 PSVTDTC143X TRANSISTOR(SI) S
Q15 B1ABCF000103 TRANSISTOR(SI)

D1 B0JCME000035 DIODE(SI)
D2 B0JCDD000002 DIODE(SI)
D4 MA8047 DIODE(SI) S
D5 MA8047 DIODE(SI) S
D6 B0BC2R1A0006 DIODE(SI)
D8 B0JCDD000002 DIODE(SI)
D10 MA2Z72000 DIODE(SI)
D11 MA8047 DIODE(SI) S
LED1 B3ACB0000139 LED
LED2 B3ACB0000139 LED
LED3 B3ACB0000139 LED
LED4 B3ACB0000139 LED
LED5 B3ACB0000139 LED
LED6 B3ACB0000139 LED
LED7 B3AZB0000033 LED

L1 G1C220M00037 COIL S
F1 PQLQR2M5N6K COIL S

CN1 K1MY30BA0111 CONNECTOR
CN4 K2HD103D0001 JACK

L6 J0JHC0000088 IC FILTER
L7 J0JCC0000275 IC FILTER

RA1 EXB28VR000X RESISTOR ARRAY
RA2 EXB28VR000X RESISTOR ARRAY
RA3 EXB28VR000X RESISTOR ARRAY
RA4 EXB28VR000X RESISTOR ARRAY
RA5 EXB28VR000X RESISTOR ARRAY

R3 ERJ3GEYJ562 5.6K
R4 ERJ3GEYJ153 15K
R5 ERJ2GEJ471 470
R6 ERJ3GEYJ103 10K
R7 ERJ3GEYJ224 220K
R12 ERJ2GEJ335 3.3M
R13 ERJ2GEJ101 100
R14 ERJ2GEJ103 10K

Part No. Part Name & Description Remarks

(*1)
(ICs)

(TRANSISTORS)

(DIODES)

(COILS)

(CONNECTOR AND JACK)

(IC FILTERS)

(COMPONENTS PARTS)

(RESISTORS)

97

KX-TG9120PDS/KX-TGA910FXS

Ref.

No.
R15 ERJ2GEJ5R6 5.6
R16 ERJ2GEYJ474 470K S
R17 ERJ2GEYJ474 470K S
R19 ERJ2GEJ102 1K
R20 ERJ2GEJ102 1K
R21 ERJ2GEJ102 1K
R23 ERJ2GEJ105X 1M
R24 ERJ2GEJ104 100K
R25 ERJ2GEJ104 100K
R26 ERJ2GEJ104 100K
R27 ERJ2GEJ393X 39K
R30 ERJ3GEYJ331 330
R31 ERJ3GEYJ101 100
R32 ERJ3GEYJ101 100
R33 ERJ3GEYJ101 100
R34 ERJ3GEYJ101 100
R35 ERJ3GEYJ101 100
R36 ERJ3GEYJ101 100
R37 ERJ2GEJ331 330
R38 ERJ2GEJ472X 4.7K
R39 ERJ3GEYJ330 33
R40 ERJ3GEYJ330 33
R41 ERJ2GEJ222 2.2K
R42 ERJ2GEJ104 100K
R43 ERJ6RSJR10V 0.1
R44 ERJ2GEJ100 10
R45 ERJ2GEJ273X 27K
R46 ERJ2GEJ562X 5.6K
R47 ERJ6GEYJ1R0 1
R49 ERJL06KJ47MV 0.047
R50 ERJ3EKF1603 160K
R51 ERJ3EKF6802 68K
R52 ERJ3EKF4302V 43K
R53 ERJ3EKF1802 18K
R54 ERJ2GEJ562X 5.6K
R57 ERJ3GEYJ680 68
R58 ERJ2GEJ102 1K
R59 PQ4R10XJ470 47 S
R60 ERJ3EKF2203 220K
R61 ERJ2GEJ103 10K
R62 ERJ2GEJ103 10K
R63 ERJ2GEJ103 10K
R64 ERJ2GEJ473 47K
R66 ERJ2GEJ334 330K
R67 ERJ2GEJ104 100K
R70 ERJ3GEYJ221 220
R71 ERJ3GEYJ332 3.3K
R72 ERJ2GEJ102 1K
R73 ERJ2GEJ103 10K
R74 ERJ2GEJ103 10K
R78 ERJ2GEJ221 220
R79 ERJ2GE0R00 0
R80 ERJ2RKF6802 68K
R81 ERJ2RKF6802 68K
R82 ERJ2GEJ103 10K
R121 ERJ2GEJ223 22K
R122 ERJ2GEJ154 150K
R123 ERJ2GEJ332 3.3K
R124 ERJ2GEJ183 18K
R125 ERJ2GEJ183 18K
R126 ERJ2GEJ332 3.3K
R127 ERJ2GEJ471 470
R128 ERJ2GEJ121 120
R129 ERJ2GEJ332 3.3K
R130 ERJ2GEJ183 18K
R134 ERJ2GE0R00 0
R135 ERJ2GEJ181 180
R136 ERJ3GEYJ221 220
R137 ERJ2GEJ473 47K
R138 ERJ2GEJ473 47K
R139 ERJ2GEJ473 47K

C1 EEE0GA331WP 330

Part No. Part Name & Description Remarks

(CAPACITORS)

Ref.

No.
C2 ECJ0EB1A104K 0.1
C3 ECUV1C104KBV 0.1
C5 ECJ0EB1A104K 0.1
C6 ECJ0EB1A104K 0.1
C7 ECJ0EB1A683K 0.068
C8 ECJ0EB1A683K 0.068
C9 ECJ0EB1A104K 0.1
C10 ECJ0EB1A683K 0.068
C11 ECJ0EB1A104K 0.1
C12 ECJ0EB1H102K 0.001
C13 ECJ0EB1A104K 0.1
C14 ECJ0EB1A104K 0.1
C15 ECJ0EB1A104K 0.1
C18 ECJ0EB1A104K 0.1
C19 F1G1A2240008 0.22
C20 ECJ0EB1A104K 0.1
C23 ECJ0EB1C103K 0.01
C24 PQCUV1C105KB 1
C25 ECJ0EB1A104K 0.1
C26 ECJ0EB1A104K 0.1
C27 ECJ0EB1H471K 470P
C28 ECJ0EB1A104K 0.1
C29 ECUV1A105KBV 1
C30 ECUV1A105KBV 1
C31 ECUV1A105KBV 1
C32 ECUV1A105KBV 1
C33 ECUV1A106ZF 10 S
C34 ECJ0EC1H050C 5P
C35 ECJ0EC1H070D 7P
C36 ECUV1A105KBV 1
C40 ECUV1A105KBV 1
C41 ECUV1A105KBV 1
C42 PQCUV1A225KB 2.2 S
C43 PQCUV1A225KB 2.2 S
C44 ECJ0EB1H102K 0.001
C49 ECUV1A105KBV 1
C50 ECJ0EB1A104K 0.1
C57 EEE0JA331P 330
C60 ECJ0EC1H100D 10P
C61 F1G1E271A084 270P
C63 F1G1E271A084 270P
C64 ECJ0EC1H100D 10P
C65 ECJ0EB1E102K 0.001
C66 ECJ0EB1E102K 0.001
C74 ECJ0EB1E102K 0.001
C75 ECJ0EC1H120J 12P
C76 ECJ0EC1H120J 12P
C77 ECJ0EC1H100D 10P
C78 ECJ0EC1H100D 10P
C79 ECJ0EC1H100D 10P
C114 ECUV1A105KBV 1
C115 ECUV1A105KBV 1
C118 ECUV1A105KBV 1
C119 ECUV1A105KBV 1
C120 ECUV1A105KBV 1
C122 ECJ0EB1C103K 0.01
C128 ECJ0EB1C103K 0.01
C129 ECUV1C104KBV 0.1
C133 ECJ0EB1C103K 0.01

E101 PQLP10280Z LIQUID CRYSTAL DISPLAY
E102 PQSA10194Z ANTENNA
IC20 PQLP10263Z RF UNIT
MIC L0CBAB000052 MICROPHONE
SW1 K0C115A00006 SEESAW SWITCH
X1 H0D103500005 CRYSTAL OSCILLATOR

Part No. Part Name & Description Remarks

(OTHERS)

98

KX-TG9120PDS/KX-TGA910FXS

15.5.3. Charger Unit

15.5.3.1. Cabinet and Electrical Parts

Ref.

No.
200 PQLV30045ZS CHARGER UNIT
200-1 PQKM10721Z3 CABINET BODY PS-HB
200-2 PQGG10410Y1 GRILLE ABS-HB
200-3 PQKE10436Y2 CASE, CHARGE TERMINAL PS-HB
200-4 PQKE10454Z1 HOLDER, CHARGETERMINAL (L) POM-HB
200-5 PQKE10455Z1 HOLDER, CHARGETERMINAL (R) POM-HB
200-6 PQJT10241Y CHARGE TERMINAL (L)
200-7 PQJT10242Y CHARGE TERMINAL (R)
200-8 PQKF10709X1 CABINET COVER ABS-HB
200-9 PQHA10023Z RUBBER PARTS, FOOTCUSHION
200-10 PQGT18544Z NAME PLATE

Part No. Part Name & Description Remarks

15.5.3.2. Main P.C.Board Parts

Ref.

No.
PCB200 PQWPA810ESCH MAIN P.C.BOARD ASS'Y (RTL)

J1 K2ECYB000001 JACK S

R1 ERDS1VJ100 10 S
R2 ERDS1TJ120 12 S
R3 ERDS1VJ100 10 S
R4 ERDS1TJ120 12 S

Part No. Part Name & Description Remarks

(JACK)

(RESISTORS)

Ref.

No.

P103 PQPK15513Z GIFT BOX

Part No. Part Name & Description Remarks

15.5.5. Fixtures and Tools

Note:

(*1) See The Setting Method of JIG (Base Unit) (P.58),
and The Setting Method of JIG (Handset) (P.62).

Part No. Part Name & Description Remarks
PQZZ1CD300E JIG CABLE (*1)
PQZZTG9120PD BATCH FILE CD-ROM (*1)

15.5.4. Accessories and Packing Materials

Note:

(*1) You can download and refer to the Operating Instruc­tions (Instruction book) on TSN Server.

15.5.4.1. KX-TG9120PDS

Ref.

No.

A1 PQLV207CEZ AC ADAPTOR
A2 PQJA10075Z CORD, TELEPHONE
A3 PQKE10456Z1 HANGER, BELT CLIP PC+ABS-

A4 PQJA10165Z CORD, AUDIO CABLE
A5 PQQX15737Z INSTRUCTION BOOK (*1)

A6 PQQW15532Z LEAFLET, QUICK GUIDE
A7 PQQW15504Z LEAFLET, SKYPE
A8 PQQW15437Z LEAFLET, BATTERY
A9 PQKL10074Z1 STAND, WALL MOUNT (for Ser-

P1 XZB22X25B04 PROTECTION COVER (for Base

P2 PQPH10094Z PROTECTION COVER (for Hand-

P3 PQPD10836Z CUSHION
P4 PQPK15598Y GIFT BOX

Part No. Part Name & Description Remarks

HB

vice)

Unit)

set)

ABS-HB

15.5.4.2. KX-TGA910FXS

Ref.

No.

A101 PQLV209CEZ AC ADAPTOR
A102 PQQX15690Z INSTRUCTION BOOK (*1)

A103 PQQW15437Z LEAFLET, BATTERY
A104 PQKE10456Z1 HANGER, BELT CLIP PC+ABS-

P101 XZB13X19C03 PROTECTION COVER (for Charger

P102 PQPH10094Z PROTECTION COVER (for Hand-

Part No. Part Name & Description Remarks

HB

Unit)

set)

A.I/N
KXTG9120PDS
KXTGA910FXS

99