Kx-tc1468lbb

ORDER NO. KM40206883C3

Telephone Equipment

KX-TC1468LBB 900MHz Cordless Phone Black Version (for Brazil)

© 2002 Kyushu Matsushita Electric Co., Ltd. All rights reserved. Unauthorized copying and distribution is a violation of law.

KX-TC1468LBB

CONTENTS Page 1 STANDARD BATTERY LIFE

Page

4

8.1. Test Mode Flow Chart (Base Unit)

21

1.1. Recharge

4

8.2. Adjustment

22

1.2. Battery Information

4

8.3. Adjustment Standard (Base Unit)

23

2 LOCATION OF CONTROLS

5

9 ADJUSTMENTS (HANDSET)

25

2.1. Base unit

5

9.1. Test Mode Flow Chart (Handset)

25

2.2. Handset

5

9.2. Adjustment

26

2.3. Battery Replacement

6

9.3. Adjustment (Handset)

27

7

10 FREQUENCY TABLE (MHz)

29

9

11 BLOCK DIAGRAM (Base Unit)

30

12 CIRCUIT OPERATION

31

3 CONNECTIONS 3.1. Adding Another Phone 4 OPERATIONS

10

4.1. Making Calls

10

12.1. Outline

31

4.2. Answering Calls

10

12.2. Power Supply Circuit

31

5 DISASSEMBLY INSTRUCUTIONS

11

12.3. Reset Circuit

32

6 HOW TO REMOVE TEL JACK

13

12.4. Charge Circuit

33

7 TROUBLESHOOTING GUIDE

14

12.5. Telephone Line Interface

34

7.1. Check Power

15

12.6. Transmitter/Receiver

34

7.2. Bell Reception

16

12.7. Signal Route

35

7.3. Check Battery Charge

17

13 BLOCK DIAGRAM (Handset)

36

7.4. Check Link

18

14 CIRCUIT OPERATION (HANDSET)

37

7.5. Check Handset Transmission

20

14.1. Outline

37

7.6. Check Handset Reception

20

14.2. Reset Circuit/Charge Circuit

37

21

14.3. Battery Low / Power Down Detector

38

8 ADJUSTMENTS (BASE UNIT)

2

KX-TC1468LBB

15 HOW TO REPLACE FLAT PACKAGE IC

39

23.2. Handset

50

23.3. Accessories and Packing Materials

52

15.1. Preparation

39

15.2. Procedure

39

15.3. Modification Procedure of Bridge

39

24.1. Base Unit

53

40

24.2. Handset

53

16 CPU DATA (Base Unit)

24 FOR SCHEMATIC DIAGRAM

16.1. IC3

40

16.2. Digital Security Coding System

40

25.1. Main

54

41

25.2. RF Module

55

17 CPU DATA (Handset) 17.1. U1 18 EXPLANATION OF IC TERMINALS (RF Unit) 18.1. IC1

25 SCHEMATIC DIAGRAM (Base Unit)

53

41

26 SCHEMATIC DIAGRAM (Handset)

54

56

42

26.1. Main

56

42

26.2. RF Module

57

19 CABINET AND ELECTRICAL PARTS LOCATION (BASE UNIT)

27 CIRCUIT BOARD (Base Unit)

43

58

27.1. Main (Component View)

58

20 CABINET AND ELECTRICAL PARTS LOCATION (HANDSET) 44

27.2. Main (Flow Solder Side View)

59

21 ACCESSORIES AND PACKING MATERIALS

27.3. Locator (Component View)

60

27.4. Locator (Flow Solder Side View)

60

27.5. RF Module

61

45

22 TERMINAL GUIDE OF THE ICs TRANSISTORS AND DIODES 46 22.1. Base Unit

46

22.2. Handset

46

28.1. Main (Component View)

62

47

28.2. Main (Flow Solder Side View)

63

47

28.3. RF Module

64

23 REPLACEMENT PARTS LIST 23.1. Base Unit

28 CIRCUIT BOARD (Handset)

3

62

KX-TC1468LBB

1 STANDARD BATTERY LIFE 1.1.

Recharge

1.2.

Battery Information

After your Panasonic battery is fully charged: Operation While in use (TALK) While not in use (Standby)

Operating time Up to about 5 hours Up to about 5 days

· The battery operating time may vary depending on usage conditions and ambient temperature. · Clean the handset and the base unit charge contacts with a soft, dry cloth. Clean if the unit is subject to grease, dust or high humidity. Otherwise the battery may not charge properly. · If the battery is fully charged, you do not have to place the handset on the base unit until the IN USE indicator flashes. This will maximize the battery life. · The battery cannot be overcharged.

4

KX-TC1468LBB

2 LOCATION OF CONTROLS 2.1.

Base unit

2.2.

Handset

5

KX-TC1468LBB

2.3.

Battery Replacement

6

KX-TC1468LBB

3 CONNECTIONS

· USE ONLY WITH Panasonic AC ADAPTOR PQWATC1468LB. · The AC adaptor must remain connected at all times. (It is normal for the adaptor to feel warm during use.)

7

KX-TC1468LBB

8

KX-TC1468LBB

3.1.

Adding Another Phone

This unit will not function during a power failure. To connect a standard telephone on the same line, use a T-adaptor.

9

KX-TC1468LBB

4 OPERATIONS 4.1.

Making Calls

4.2.

Answering Calls

10

KX-TC1468LBB

5 DISASSEMBLY INSTRUCUTIONS

Show in Fig. 1 2

To remove. Lower Cabinet Locator P.C.Board

3

RF P.C.Board

4

Main P.C.Board

Remove. Screws (2.6 × 8)................ ....... (A) × 4 Screws (2.3 × 6)................ ....... (B) × 4 Locator P.C.Board Screws (2 × 6)................ ....... (C) × 3 RF P.C.Board Screws (2.3 × 6)................ ....... (D) × 4 Main P.C.Board

11

KX-TC1468LBB

Show in Fig. 5 6 7 8

9

To remove. Rear Cabinet Antenna RF P.C.Board Main P.C.Board

Remove. Battery compartment cover. Screws (2.6 × 8)................ ......(E) × 2 Screw (2.6 × 8)................ ......(F) × 1 Screws (2 × 6)................ ......(G) × 2 RF P.C.Board. Screws (2 × 6)................ ......(H) × 2 Main P.C.Board

12

KX-TC1468LBB

6 HOW TO REMOVE TEL JACK 1. Keep 2 hooks for TEL JACK fixing open in the direction of arrow 1, then pull the top of TEL JACK forward as shown arrow 2 until the hooks click. (Refer to Fig. 1.) 2. Remove TEL JACK pulling just above in the direction of arrow 3. (Refer to Fig. 2.)

13

KX-TC1468LBB

7 TROUBLESHOOTING GUIDE

Cross Reference: Check Power (P.15) Bell Reception (P.16) Check Battery Charge (P.17) Check Link (P.18) Check Handset Transmission (P.20) Check Handset Reception (P.20)

14

KX-TC1468LBB

7.1.

Check Power

Cross Reference:

Note:

Reset Circuit (P.32)

CPU: IC3

Power Supply Circuit (P.31) ** : CONNECTIONS (P.7)

Cross Reference:

Note:

Charge Circuit (P.33)

CPU: U1

* : Each measurement points are shown in CIRCUIT BOARD (Base Unit) (P.58) or CIRCUIT BOARD (Handset) (P.62)

15

KX-TC1468LBB

7.2.

Bell Reception

Cross Reference:

Note:

Telephone Line Interface (P.34)

CPU : IC3

* : Each measurement points are shown in CIRCUIT BOARD (Base Unit) (P.58) or CIRCUIT BOARD (Handset) (P.62)

16

KX-TC1468LBB

7.3.

Check Battery Charge

Cross Reference:

Note:

Charge Circuit (P.33)

CPU: IC3

Power Supply Circuit (P.31) ** : CONNECTIONS (P.7)

Cross Reference:

Note:

Reset Circuit/Charge Circuit (P.37)

CPU: U1

*: Each measurement points are shown in CIRCUIT BOARD (Base Unit) (P.58) or CIRCUIT BOARD (Handset) (P.62)

17

KX-TC1468LBB

7.4.

Check Link

**: Refer to Adjustment (P.22)

Note: CPU: IC3 RF IC: IC1

*: Each measurement points are shown in CIRCUIT BOARD (Base Unit) (P.58) or CIRCUIT BOARD (Handset) (P.62)

18

KX-TC1468LBB

**: Refer to Adjustment (P.26).

Note: CPU: U1 RF IC: IC1

*: Each measurement points are shown in RF Module (P.64)

19

KX-TC1468LBB

7.5.

Check Handset Transmission

Cross Reference: Signal Route (P.35)

7.6.

Check Handset Reception

Cross Reference: Signal Route (P.35)

20

KX-TC1468LBB

8 ADJUSTMENTS (BASE UNIT) If your unit have below symptoms, adjust or confirm each item using remedy column from the table. Symptom The base unit dose not respond to a call from handset. The base unit dose not transmit or the transmit frequency is off. The transmit frequency is off. The transmit power output is low, and the operating distance between the base unit and the handset is less than normal. The reception sensitivity of base unit is low with noise. The transmit level is high or low. The reception level is high or low. The unit does not link.

*: Refer to Adjustment (P.22).

8.1.

Test Mode Flow Chart (Base Unit)

The operation-flow of Test mode and main check items are shown below.

Note: **: Refer to the above table.

21

Make Make Make Make

adjustments adjustments confirmation confirmation

Remedy* in item (A) in item (B) in item (C) in item (D)

Make Make Make Make

confirmation confirmation adjustments confirmation

in item (E) in item (F) in item (G) in item (H)

KX-TC1468LBB

8.2.

Adjustment Adjustment Items Test Mode

Adjustment Point

(A) RX VCO

CH1 Talk

L502

(B) TX VCO

CH1 Talk

L503

(C) TX Frequency

CH1 Talk

VC1

(D) TX Power Confirmation

CH1 Talk

T5

(E) RX Sensitivity Confirmation

CH1 Talk

-

(F) Line Output Level Confirmation

CH1 Talk

-

(G) Line Input CH1 Talk Modulation Confirmation (H) RSSI Confirmation CH1 Talk

-

(I) Data Modulation confirmation

-

TX Data

*Procedure

Check or Replace Parts · Adjust L502 so that the reading of the Digital Voltmeter is 1.75V ± 0.2V. IC1, L502, (at TP808) VD501 · Adjust L503 so that the reading of the Digital Voltmeter is 1.8V ± 0.15V. IC1, (at TP809) VD502, L503 · Adjustment VC1 so that the reading of the frequency counter is 1ch Freq. IC1 (902.1MHz) ± 9KHz at the antenna. · Confirm so that the reading of the RF VTVM is -7 ± 2dBm. (at TP510) IC1, Q509, Q510, FL501, L503 1. Apply -107dBm output from S.S.G. (modulation frequency 1KHz, dev. FL501, 0KHz). CF501, IC1 2. Confirm that the distortion reading of Audio Analyzer is less than 25%. 1. Apply -60dBm output from S.S.G. (modulation frequency 1KHz, dev. IC2 25KHz). 2. Confirm that the reading of Audio Analyzer is -20 ± 1dBm (600Ω load). 1. Input via loop simulator 1.0KHz, -10dBm (measured at T-R) signal. 2. Confirm so that the reading of FM Deviation Meter is 25KHz ± 1KHz.

-

Hold the “Locator” key for 5 seconds to enter to RSSI test. 1. Measure the SSG output level when the SIG_OUT changes from Low to High. 2. Confirm that the SSG output level is -70+10/-15dBm. · Confirm for 65 ± 10KHz FM Deviation Meter reading

The connection of adjustment equipment are as shown in Adjustment Standard (Base Unit) (P.23). SSG Frequency: 925.9 MHz

22

IC1, VD502 IC1, FL501

IC3, VD502

KX-TC1468LBB

8.3.

Adjustment Standard (Base Unit)

(Main, Flow Solder Side View)

AF OSC Tip Ring

LOOP SIMULATOR Audio Analyzer (E) (F)

IC3

23

KX-TC1468LBB

(RF Module)

925.9MHz SSG

FM Deviation Meter

(G), (I)

Frequency Counter

(C)

Spectrum Analyzer

(D)

TP510

TP809 (TXVCO) D.M. TP808 (RXVCO)

(B)

D.M. (A)

1

14

56

43

IC1

42

15

28

29

SIG_OUT GND Oscillo scope (H)

24

KX-TC1468LBB

9 ADJUSTMENTS (HANDSET) If your unit have below symptoms, adjust or confirm each item using remedy column from the table. Symptom The movement of Battery Low Indicator is wrong. The base unit does not respond to a call from the handset. The base unit does not transmit or the transmit frequency is off. The transmit frequency is off. The transmit power output is low, and the operating distance between the base unit and the Handset is less than normal. The reception sensitivity of base unit is low with noise. Does not link between the base unit and the handset. The reception level is high or low. The transmit level is high or low.

Make Make Make Make Make

confirmation adjustments adjustments confirmation confirmation

Remedy* in item (A) in item (B) in item (C) in item (D) in item (E)

Make Make Make Make

confirmation confirmation confirmation adjustments

item (F) in item (G) item (H) in item (I)

*: Refer to Adjustment (P.26). Unit condition: 1. Remove the antenna lead wire from P.C Board of the handset. 2. Power Supply: DC 3.9V (DC power supply) 3. Speaker Load: 150Ω CH CH1

9.1.

TX Frequency 925.9MHz

RX Frequency 902.1MHz

Test Mode Flow Chart (Handset)

Note: Refet to CIRCUIT BOARD (Handset) (P.62) Signal Route (P.35)

25

Volume 2

KX-TC1468LBB

9.2.

Adjustment

Adjustment Items Test Mode

Adjustment Point

Procedure 1. Adjust L503 so that the reading of the Digital Voltmeter is 1.80V ± 0.15V. (at TP809) 1. Adjust L502 so that the reading of the Digital Voltmeter is 1.75V ± 0.2V.

(A) TX VCO

Stand-by

L503

(B) RX VCO

Stand-by

L502

(C) TX Frequency Adjustment (D) TX Power Confirmation

Stand-by

VC1

Stand-by

-

(E) RX Sensitivity Confirmation (SP out)

Talk

-

(F) RSSI Confirmation

Talk

-

2. Confirm that the distortion reading of Audio Analyzer is less than 25%. 1. Measure the SSG output level when the SIG_OUT changes from Low to High. (modulation frequency 1KHz, dev.25kHz)

(G) Speaker Output Level confirmation

Talk

-

2. Confirm that the SSG output level is -70 ± 15dBm. 1. Apply -47dBm output from S.S.G. (modulation frequency 1KHz, dev. 25KHz).

(H) Mic Modulation Factor

Talk

VR1

Tx Data

-

(I) Data Modulation Confirmation

(at TP802) · Adjust VC1 so that the reading of the frequency counter is 925.9MHz ± 9KHz. · Output level should be over -4 ± 2dBm on RF VTVM (50Ω load). (at TP510) 1. Apply -107dBm output from S.S.G. (modulation frequency 1KHz, dev. 25KHz).

Check or Replace Parts IC1, L503, VD502 IC1, L502, VD501 IC1 IC1, Q509, Q510, FL501, L503 FL501, CF501, IC1 IC1, FL501 IC1

2. Confirm that SP output level is 170 ± 10mVrms. (distortion: less than 7%) (volume High). 1. Apply a MIC signal (1KHz, 3.8mVrms). 2. Adjust so that the reading FM Deviation Meter is 25kHz ± 1KHz. · Confirm for 40kHz ± 10KHz FM Deviation Meter reading.

The connections of adjustment equipment are as shown in Adjustment (Handset) (P.27). SSG Frequency: 902.1 MHz

26

IC1, VD502 U1

KX-TC1468LBB

9.3.

Adjustment (Handset)

(Main, component View)

DC Power Supply (Battery)

27

KX-TC1468LBB

(RF Module)

FM Deviation Meter

(H), (I)

Spectrum Analyzer

(D)

Frequency Counter

(C)

TP510

TP809 (TXVCO) D.M. TP808 (RXVCO)

(A)

D.M. (B)

1 56

14 15

IC1

28

43 42

29

SIG_OUT

Audio Analyzer (E)

MIC_IN AF Generator

GND Oscillo scope (G)

28

KX-TC1468LBB

10 FREQUENCY TABLE (MHz) Channel 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

BASE UNIT Transmit Frequency Receive Frequency 902.10 925.90 902.15 925.95 902.20 926.00 902.25 926.05 902.30 926.10 902.35 926.15 902.40 926.20 902.45 926.25 902.50 926.30 902.55 926.35 902.60 926.40 902.65 926.45 902.70 926.50 902.75 926.55 902.80 926.60 902.85 926.65 902.90 926.70 902.95 926.75 903.00 926.80 903.05 926.85 903.10 926.90 903.15 926.95 903.20 927.00 903.25 927.05 903.30 927.10 903.35 927.15 903.40 927.20 903.45 927.25 903.50 927.30 903.55 927.35 903.60 927.40 903.65 927.45 903.70 927.50 903.75 927.55 903.80 927.60 903.85 927.65 903.90 927.70 903.95 927.75 904.00 927.80 904.05 927.85

29

HANDSET Transmit Frequency Receive Frequency 925.90 902.10 925.95 902.15 926.00 902.20 926.05 902.25 926.10 902.30 926.15 902.35 926.20 902.40 926.25 902.45 926.30 902.50 926.35 902.55 926.40 902.60 926.45 902.65 926.50 902.70 926.55 902.75 926.60 902.80 926.65 902.85 926.70 902.90 926.75 902.95 926.80 903.00 926.85 903.05 926.90 903.10 926.95 903.15 927.00 903.20 927.05 903.25 927.10 903.30 927.15 903.35 927.20 903.40 927.25 903.45 927.30 903.50 927.35 903.55 927.40 903.60 927.45 903.65 927.50 903.70 927.55 903.75 927.60 903.80 927.65 903.85 927.70 903.90 927.75 903.95 927.80 904.00 927.85 904.05

K X -T C 1

11 BLOCK DIAGRAM (Base Unit) 4 6 8 L B B

VCC

Q1, Q4 DTMF ALC

EXP

Det

COMP

Doubler/Buffer Q510

RX_PD

Filter

48 TX_PD 3 SF_OUT

FL501

TX_VCO Q509, VD502

9

IC1 46

TX AUDIO

T4 AUDIO TRANSFORMER

receive

MIC_IN

SIG_OUT

52 OSCI

RX_LO Q506

DUPLEXER

IC2C-D transmit 15

1st IF IN IF FILTER CF501

LPF

8 MIC_IN

RSSI

COM_STB COM_DATA COM_CLK 20 21 4

22

REF_CLK 1 X2 4MHz 2 RX_DATA 16 TX_DATA 15

Lnseize 24 RING_DET 26

IC3 (CPU)

! Q8 TX ON/OFF

5V

VDR1 RL1

Tx_PWR 17

Q3 RELAY CTRL

IC2-A, IC2-B RING DETECTION Q6, Q7 RESET CIRCUIT

27

CHG_DET 25

Q9 VOLTAGE REGULATOR

DC 9V To H/S

F1 Ring

43

RESET

9V

Tip

SIDE TONE NETWORK

37

36

13 D_OUT

LNA: Low Noise Amp Q555, Q556

ANTENNA

39

MIXER Q512

DTMF

RX-VCC

RF Module

Q2, Q10 CHARGE DETECT

KX-TC1468LBB: BLOCK DIAGRAM (BASE UNIT)

KX-TC1468LBB

12 CIRCUIT OPERATION 12.1. Outline Base unit consists of the following ICs as shown in BLOCK DIAGRAM. · CPU:IC3 − Controlling the whole system − Forming/analyzing all data signals (ACK, CMD signal etc.) − All interfaces (ex: LED, KEY, Detector Circuit (Charge/ Power Down) · RF IC:IC1 − PLL Oscillator − Compress/ Expander − Amplifier for transmission and reception · Additionally − Power Supply Circuit − Reset Circuit − Charge Circuit − Telephone Line Interface Circuit

12.2. Power Supply Circuit The power supply to the CPU (Digital, Analog) and RF IC from AC Adaptor (+9V) as shown in diagram in Reset Circuit (P.32).

31

KX-TC1468LBB

12.3. Reset Circuit After power supply from AC adaptor, the VDD (5.0V) is input to Q6, Q7 for making reset signal. Refer to the below waveform.





32

KX-TC1468LBB

12.4. Charge Circuit Circuit Operation: When charging the handset on the base unit, the charge current is as follows; DC+(9V) → L1 → CHG (Base) → [CHG1 (Handset) → D1 → BAT1....Battery....BAT2 (GND) → D2 → D3 → CHG2 (Handset)] → CHG2 (Base) → L7 → ZD11 → DC-(GND), In this way, the CPU on both unit detects the fact that the battery is charged.



33

KX-TC1468LBB

12.5. Telephone Line Interface Function: · Bell signal detection · ON/OFF hook and pulse dial circuit · Side tone circuit Bell signal detection and OFF HOOK circuit: In the idle mode, Q3 is open to cut the DC loop current and decrease the ring load. When ring voltage appears at the Tip (T) and Ring (R) leads (When the telephone rings), the AC ring voltage is transferred as follows: T → L9 → C7 → R44 → IC2-A, B → CPU (Ring DET). [BELL] When the CPU(IC3) detects a ring signal and press the TALK Key onto the handset. Q3 turns on, thus providing an off-hook condition (active DC current flow through the circuit) and the following signal flow is for the loop current. T → L9 → R52 → T4 → RLY1 → L10 → F1 → R [OFF HOOK] ON HOOK Circuit: Q3 is open, Q3 connected as to cut the DC loop current via RLY1 and to cut the voice signal. The unit is consequently in an on-hook condition. Pulse Dial Circuit: DSP (Relay) turns Q3 ON/OFF to make the pulse dialing via RLY1. Side Tone Circuit: Basically this circuit prevents the TX signal from feeding back to RX signal. As for this unit, TX signal feed back from IC2 is canceled by AC3 and so on.

12.6. Transmitter/Receiver Base Unit and Handset are mainly consists of RF (Radio Frequency) IC(IC1) and CPU(IC3). Base Unit and Handset transmit/receive voice signal and data signal through the antenna on carrier frequency. Signal Pass: *Refer to CDL TX/RX in Signal Route (P.35).

12.6.1. Transmitter Block Circuit Operation: The voice signal input from the TEL LINE interface goes to RF IC(IC1) as shown in BLOCK DIAGRAM (Base Unit) (P.30). And the signal goes through the compressor and SPLATTER FILTER of RF IC, it is output to transmitter circuit. The signal of the data sent to the handset is applied too. The capacitor of VARICAP (:VD502) is changing in accordance with the voice signal from telephone line interface or TX DATA signal from CPU. Therefore, the carrier frequency which is generated by TXVCO will be changing, and Frequency modulated RF signal is generated and amplified by RF AMP (Doubler: Q510). It pass through the Duplexer FL501 and radiated from Antenna. Handset detects the voice signal or data signal in the circuit same as the following explanation of Receiver Block.

12.6.2. Receiver Block Circuit Operation: The signal of 900MHz band (925.9~927.85MHz) which is input from ANT is filtered at FL501 as shown in BLOCK DIAGRAM (Base Unit) (P.30), then it is input to RF IC. The signal input to RF IC is converted through Mixer, IF filter (CF501) and Expander. In short 1st local frequency is mixed with the received RF signal. Then it passes through IF (CF501: 10.7 MHz Intermidiate Frequency) and filtered at F1. The detected signal passes through the expander and Amplifier inside of RF IC to the TEL LINE interface. RX data (from Handset): The data signal from handset (ex: Talk, ACK, COM) is also included in 900 MHz band same as the voice data. After second if filter, the data signal is made square shape by data limiting AMP of the RF IC. RX data is output to CPU (RX Data).

34

KX-TC1468LBB

12.7. Signal Route Each signal route is as follows.

35

K X -T C 1

13 BLOCK DIAGRAM (Handset) 4 6 8 L B B

RF Module IF FILTER CF501

MIXER Q512 LNA: Low Noise Amp Q555, Q556

ANTENNA

37

SP OUT 2 15 SP OUT 1 16

1st IF_IN

RECEIVER

46 RX PD

IC1 (RF IC) MIC_IN

RX_VCO Q506

!$

10 TX_DATA PD-IN Tx VCC Tx_PWR 18

RX_DATA

Q2 RX ON/OFF

1

2

3

RE/PA

4

5

6

TALK FLASH

7

8

9

0

#

OFF CHAN

LOUD

AUTO

16 Rx_PWR

17

11 R1 - 3

Power-down 5

U1

VDD 3.6V BATTERY

Key

15 Rx VCC

Q4, Q1 Power-down

CLK

TX_VCO Q509

Q5 TX ON/OFF

MICROPHONE

9

SFC 2

REF_CLK

4

DATA

LPF

Doubler/Buffer Q510

TX AUDIO

STB

DUPLEXER

C1 - 4

R2 0R

1 27

RESET 2

RESET & CHARGE CIRCUIT 25

CHG_DET

Buzz RINGSW 23

Q3, Q6 BUZZER CKT.

X1 4MHz VCC

4 RINGER ON/OFF

KX-TC1468LBB: BLOCK DIAGRAM (HANDSET)

KX-TC1468LBB

14 CIRCUIT OPERATION (HANDSET) 14.1. Outline Handset consist of the following ICs as shown in BLOCK DIAGRAM. · CPU: U1 − All data signals (forming/analyzing ACK or CMD signal*) − All interfaces (ex; LED, Key, Buzzer, Detector Circuit, Charge, Battery Low) − RAM for keeping the data (CH Number, ID Code, etc.) · RF IC:IC1 − PLL Oscillator − Compress/Expander − Amplifier for transmission and reception

14.2. Reset Circuit/Charge Circuit The power of handset is supplied by battery. Whenever the battery is recharged or inserted, the impulse at CHG1 becomes Reset signal through D11, and sent to CPU. *Refer to Charge Circuit (P.33).



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KX-TC1468LBB

14.3. Battery Low / Power Down Detector Circuit Operation: “Battery Low” and “Power Down” are detected by RF IC which check the voltage from battery. Shortly, every detected blocks are inseide of RF IC. The detected voltage is as follows; · Battery Low Battery voltage : V(Batt) < 3.57V The CPU detects this level and IN USE “

” starts flashing.

· Power Down Battery voltage : V(Batt) < 3.36V The output of RF IC (P-DOWN) becomes low level, then CPU stops working to keep the data (CH number, ID Code, etc.)



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KX-TC1468LBB

15 HOW TO REPLACE FLAT PACKAGE IC 15.1. Preparation · SOLDER Sparkle Solder 115A-1, 115B-1 or Almit Solder KR-19, KR-19RMA · Soldering iron Recommended power consumption will be between 30 W to 40 W. Temperature of Copper Rod 662 ± 50°F (350 ± 10°C) (An expert may handle between 60 W to 80 W iron, but beginner might damage foil by overheating.) · Flux HI115 Specific gravity 0.863. (Original flux will be replaced daily.)

15.2. Procedure 1. Temporary fix FLAT PACKAGE IC by soldering on two marked 2 pins.

*Most important matter is accurate setting of IC to the corresponding soldering foil. 2. Apply flux for all pins of FLAT PACKAGE IC.

3. Solder employing specified solder to direction of arrow, as sliding the soldering iron.

15.3. Modification Procedure of Bridge 1. Re-solder slightly on bridged portion. 2. Remove remained solder along pins employing soldering iron as shown in below figure.

39

KX-TC1468LBB

16 CPU DATA (Base Unit) 16.1. IC3 Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28

Port Name XOUT XIN TEST P67 P66 P65 P64 P63 P62 P61 P60 P77 P76 VSS P75 P74 P73 P72 P17 P16 P15 P14 P13 P12 P11 P10 RESET VDD

Label XOUT XIN TEST RSSIN PAGE DTMF5 DTMF4 DTMF3 DTMF2 DTMF1 DTMF0 LEDP1 LEDP2 GND TXDATA TXRFPWR TXPWR RESERVED FLASHOPT COMCLK COMDATA COMSTB RXDATA LSEIZE CHGDET RINGDET RESET VDD

Init.

H H H H H H H H H L H H H L L L L H L H H

I/O O I I I I O O O O O O O O O O O O I O O O I O I I I

Description 4MHz crystal oscillator 4MHz crystal oscillator Must be connected to Vss Carrier detect input (combo chip sigout) PAGE KEY recradle control, DTMF out5 DTMF out4 DTMF out3 DTMF out2 DTMF out1 DTMF out0 In-Use LED Flash time option Ground TX path data output TX RF POWER CONTROL TX power control Flash time option Combo chip clock, normal low output Combo chip data, normal low output Combo chip strobe, normal low output RX path data input Line seize control charge detect ring detect Power on reset pulse signal (w/charge reset) Power supply (+5V)

Remark

H: carrier present L: KEY PRESSED

low: on H: 300ms

L: RF POWER OFF L: TX power on H: 600ms, L: 100ms Pull low through 10k

H: seize line L: charge

16.2. Digital Security Coding System Every time the handset is put on the charging cradle of base unit, a 16-bit digital security code is generated and exchanged between base and handset. The security code is randomly selected amongst 65536 combinations. This is to comply with FCC Part 15.214(d) requirement.

40

KX-TC1468LBB

17 CPU DATA (Handset) 17.1. U1 Pin 1 2 3 4

Port XOUT XIN TEST P67

Label XOUT XIN TEST RING_SW/C_MUTE

Init

I/O O I I I

Description 4MHz crystal oscillator 4MHz crystal oscillator Must be connected to Vss Ringer on/off switch

5 6 7 8 9 10 11 12 13

P66 P65 P64 P63 P62 P61 P60 P77 P76

P66 R3 R2 R1 RSSI TX_DATA RX_PWR E_MUTE POW_DWN_IN

H H L L L L H H

O I I I I I O O I

Keyin 3 Keyin 2 Keyin 1 Carrier detect input (combo chip sigout) TX path data output RX power control for LNA & RX circuit TALK LED Power Down Detect in

14 15 16 17 18 19 20 21 22 23 24 25 26 27 28

VSS P75 P74 P73 P72 P17 P16 P15 P14 P13 P12 P11 P10 RESET VDD

VSS STB DATA CLK TX_PWR C4 C3 C2 C1 BUZZ RX_DATA CH_DET L_BATT RESET VCC

L H H H L L L L H L L L

O O O O O O O O O I I I I

L

Ground COMBO STROBE COMBO DATA COMBO CLOCK TX POWER CONTROL Keyout 4, normal low output Keyout 3, normal low output Keyout 2, normal low output Keyout 1, normal low output Beep tone output, normal low output RX DATA INPUT CHARGE DETECT LOW BATTERY DETECT Power supply (battery voltage)

41

Remark

H: RINGER ON L: RINGER OFF

H: carrier present L: RX power on L: LED ON H: L: Detect H: ENABLE

L: TX POWER ON

L: ON CHARGE CRADLE L: BATTERY LOW

KX-TC1468LBB

18 EXPLANATION OF IC TERMINALS (RF Unit) 18.1. IC1 Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28

EN CDET SF_OUT SFC2 SFC1 COMP_DC POWERSAVE MIC_OUT MIC_IN BREF PD_OUT VCC2 DOUT GND2 SPOUT2 SPOUT1 SPIN PE ZAP GND3 EXPOUT DIN EDET PRE_OUT PRE_IN DET_OUT NF_IN NF_OUT

Pin Description Enable input COMP detection Splatter filter output External splatter filter COMP output COMP output VREF Power Down input Microphone amp output Microphone amp input Audio system reference output Power Down output VCC2 Data amp output Ground 2 SP amp output 1 SP amp output 2 SP amp input Half-Mute detection ZAP write Ground 3 EXP output Data amp input EXP detection Pre-amp output Pre-amp input FM Detector output Noise filter input Noise filter output

42

Pin No. 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56

QUAD_IN QUAD_OUT NDET RSSI_DET 2NDIF_IN IFREF1 1STIF_OUT VCC1 1STIF_IN GND1 RXVCC PDL VSS FIN_RX SIGOUT BATTLOW VSSS RXPD PLLREG TX_PD TXVCC3 FIN_TX TXVSS OSCI OSCO DATA CLK

Pin Description FM detector input IFamp2 output Noise Detection RSSI Detection IFamp2 input IFamp2 VREF IFamp1 output VCC1 IFamp1 input Ground 1 RX-counter VCC BL, PD threshold selection RX-counter Gnd RX-counter input LD, RSSI, ND output BatteryLow output Logic Gnd RX-phase comparator output Logic Power Source Output TX-phase comparator output TX-counter Vcc TX-counter input TX-counter Gnd Xtal oscillator input Xtal oscillator output1 Xtal oscillator output2 Serial data input Click input

KX-TC1468LBB

19 CABINET AND ELECTRICAL PARTS LOCATION (BASE UNIT)

43

KX-TC1468LBB

20 CABINET AND ELECTRICAL PARTS LOCATION (HANDSET)

44

KX-TC1468LBB

21 ACCESSORIES AND PACKING MATERIALS

45

KX-TC1468LBB

22 TERMINAL GUIDE OF THE ICs TRANSISTORS AND DIODES 22.1. Base Unit

22.2. Handset

46

KX-TC1468LBB

23 REPLACEMENT PARTS LIST

23.1.2. Main P.C.Board Parts

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 depends on the type of assembly and the laws governing parts and product retention. At 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. 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

23.1. Base Unit 23.1.1. Cabinet and Electrical Parts Ref. No.

1 2 3 4 5 6 7 8 9 10 11

Part No. 151023402301 170023700000 401390020370 402400220370 407400020376 408400020370 408400020376 410207100000 432208511010 583207100000 407400020370

Part Name & Description TERMINAL, CHARGE ANTENNA CABINET BODY CABINET COVER PLATE, FIXING LEVER, HOOK BUTTON, HANDSET LOCATOR KEYBOARD SWITCH NAME PLATE SHIELD, RF STAND, WALL MOUNT

Remarks S S S S S S S S S S S

47

Ref. No. PCB1

Part No. PQWP11468LBH

IC2 IC3

271002401005 273024114012

Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q8 Q9 Q10

203904010000 203394090029 203904010000 203394090000 203394090027 203394090000 203394090000 203396090004 203800010300 203394090000

D1 D2 D3 D4 D5 D6 AD1 ZD1 ZD10

214418021000 214418021000 214418021000 214418021000 214418000000 214418000000 214418021000 212560600000 212750600000

L1 L10 L6 L7 L8 L9

392000211000 PQLQZK1R0K PQLQZK680K PQLQZK680K PQLQZK680K PQLQZK1R0K

CN1 CN2 DCG JACK

311049020000 311153020400 301000700000 300223407030

R1 R2 R3 R5 R6 R7 R8 R9 R10 R12 R13 R14 R15 R16 R17 R18 R19 R20 R21 R22 R23 R24 R25 R26 R27 R28 R29 R30 R31 R32 R33 R34 R35

ERDS2TJ220 ERJ3GEYJ103 ERJ3GEYJ103 ERJ3GEYJ683 236432025200 ERJ3GEYJ104 ERJ3GEYJ335 PQ4R10XJ471 ERJ3GEYJ104 ERD25TJ154 ERJ3GEYJ472 ERJ3GEYJ223 ERJ3GEYJ473 236622025200 ERJ3GEYJ123 ERJ3GEYJ223 ERJ3GEYJ104 ERJ3GEYJ104 ERJ3GEYJ683 ERJ3GEYJ104 ERJ3GEYJ224 ERJ3GEYJ561 ERD25TJ220 ERJ3GEYJ105 ERJ3GEYJ563 ERJ3GEYJ103 ERJ3GEYJ223 ERJ3GEYJ122 ERJ3GEYJ202 ERJ3GEYJ103 231519070600 ERJ3GEYJ222 ERJ3GEYJ822

Part Name & Description MAIN P.C.BOARD ASS´Y (RTL) (ICS) IC IC (TRANSISTORS) TRANSISTOR(SI) TRANSISTOR(SI) TRANSISTOR(SI) TRANSISTOR(SI) TRANSISTOR(SI) TRANSISTOR(SI) TRANSISTOR(SI) TRANSISTOR(SI) TRANSISTOR(SI) TRANSISTOR(SI) (DIODES) DIODE(SI) DIODE(SI) DIODE(SI) DIODE(SI) DIODE(SI) DIODE(SI) DIODE(SI) DIODE(SI) DIODE(SI) (COILS) COIL COIL COIL COIL COIL COIL (CONNECTORS) FLAT CABLE FLAT CABLE JACK JACK (RESISTORS) 22 10k 10k 68k 43k 100k 3.3M 470 100k 150k 4.7k 22k 47k 62k 12k 22k 100k 100k 68k 100k 220k 560 22 1M 56k 10k 22k 1.2k 2k 10k 51 2.2k 8.2k

Remarks

S S S S S S S S S S S S S S S S S S S S S S

S S S S

S S

S

S

KX-TC1468LBB

Ref. No. R36 R37 R38 R39 R40 R41 R42 R43 R44 R45 R46 R47 R48 R49 R51 R53 R55 R56 R65 R66 R67 R68 R69 R70 R71 R72 R73 R74 R75 R83 R86 R88 R90 R92 R94 R96 R98 R99 AR2 AR3 AR5 AR5 AR5 AR5 AR5 AR5 AR5 AR5 AR5 AR6 AR6 AR6 AR6 ER1 ER2 ER3 ER4 ER5 JR1 JR2 R100 R101 R103 R104 R111 R201 R202 R207 R208

Part No. ERJ3GEYJ363 ERJ3GEYJ392 ERJ3GEYJ104 ERJ3GEYJ103 ERJ3GEYJ274 ERJ3GEYJ104 ERJ3GEYJ684 ERJ3GEYJ514 ERD25TJ206 ERD25TJ206 ERJ3GEYJ514 ERD25TJ101 ERDS2TJ103 ERJ3GEY0R00 ERJ3GEY0R00 ERJ3GEYJ473 ERJ3GEYJ102 ERJ3GEYJ103 ERJ3GEYJ394 ERJ3GEYJ473 ERJ3GEYJ473 ERJ3GEYJ152 ERJ3GEYJ103 231129100600 ERDS2TJ000 ERJ3GEYJ471 ERJ3GEYJ473 ERJ3GEYJ184 ERJ3GEYJ223 ERJ3GEYJ104 ERJ3GEYJ475 ERJ3GEYJ153 ERJ3GEYJ303 ERJ3GEYJ623 ERJ3GEYJ124 ERJ3GEYJ244 ERJ3GEYJ474 ERJ3GEYJ244 ERJ3GEYJ473 ERJ3GEYJ473 ERJ3GEYJ204 ERJ3GEYJ244 ERJ3GEYJ753 ERJ3GEYJ104 ERJ3GEYJ154 ERJ3GEYJ184 ERJ3GEYJ224 ERJ3GEYJ274 ERJ3GEYJ823 ERJ3GEYJ204 ERJ3GEYJ124 ERJ3GEYJ154 ERJ3GEYJ184 ERJ3GEYJ103 ERJ3GEYJ103 ERJ3GEYJ103 ERJ3GEYJ103 ERJ3GEY0R00 ERJ3GEY0R00 ERJ3GEY0R00 ERJ3GEYJ473 ERJ3GEYJ470 ERJ3GEYJ203 ERJ3GEYJ303 ERJ3GEYJ243 ERJ3GEYJ103 ERJ3GEYJ152 ERJ3GEY0R00 ERJ3GEYJ363

C1 C2 C3

ECUV1H221JCV ECUV1C104ZFV ECUV1C104ZFV

Part Name & Description 36k 3.9k 100k 10k 270k 100k 680k 510k 20M 20M 510k 100 10k 0 0 47k 1k 10k 390k 47k 47k 1.5k 10k 12 0 470 47k 180k 22k 100k 4.7M 15k 30k 62k 120k 240k 470k 240k 47k 47k 200k 240k 75k 10k 150k 180k 220k 270k 82k 200k 120k 150k 180k 10k 10k 10k 10k 0 0 0 47k 47k 20k 30k 24k 10k 1.5k 0 36k (CAPACITORS) 220P 0.1 0.1

Remarks

S S

Ref. No. C4 C5 C6 C7 C8 C9 C10 C12 C15 C24 C28 C29 C30 C31 C32 C34 C35 C60 C62 C63 C64 C65 C66 C73 C74 AE1 EC1 EC2 EC3 EC4 EC7 EC8 EC9 EC10 EC12 EC16 EC17 EC18

Part No. ECUV1C224ZFV ECUV1H103KBV 220101681300 220101681309 220101681309 ECUV1C104ZFV ECUV1C104ZFV ECUV1C104ZFV ECUV1C104ZFV ECUV1C104ZFV ECUV1H471JCV ECUV1H103KBV ECUV1C474ZFV PQCUV1H104ZF 223271150000 ECUV1H222KBV ECUV1C104ZFV PQCUV1C225ZF ECUV1H103KBV ECUV1H103KBV ECUV1C104ZFV ECUV1H220JCV ECUV1H180JCV ECUV1C104ZFV ECUV1C104ZFV ECEA1AKA221 ECEA1CK101 ECEA1CKA471 ECEA1EU101 ECEA1HU100 ECEA1EU101 ECEA1CKA102 ECEA1HU100 ECEA1AU470 ECEA1HU2R2 ECEA1HU4R7 PQCUV1C105ZF PQCUV1C105ZF

F1 RLY1 T4 VC1 VDR1 X2

354030100006 254080000013 258191190013 280300400000 218170900001 260000400017

Part Name & Description 0.22 0.01 0.1 0.01 0.01 0.1 0.1 0.1 0.1 0.1 470P 0.01 0.47 0.1 0.027 0.0022 0.1 2.2 0.01 0.01 0.1 22P 18P 0.1 0.1 220 100 470 100 10 100 1000 10 47 2.2 4.7 1 1 (OTHERS) FUSE RELAY TRANS VARIABLE CAPACITOR VARISTOR CRYSTAL OSCILLATOR

Remarks

S S S

S S S

S S S S S

S S S S S S

23.1.3. Locator P.C.Board Parts Ref. No. PCB2

Part No. PQWP21461LAH

LED

335182000000

Part Name & Description

Remarks

LOCATOR P.C.BOARD ASS´Y (RTL) (LED) LED S

23.1.4. RF P.C.Board Parts

48

Ref. No. PCB3

Part No. PQWP31461LAH

IC1

274085313120

Q506 Q509 Q510 Q512 Q555 Q556

203403111419 203403111419 203403111419 203505180005 203505180005 203505180005

VD501 VD502

213024010006 213024010006

CF501

264100051001

Part Name & Description RF P.C.BOARD ASS´Y (RTL) (IC) IC (TRANSISTORS) TRANSISTOR(SI) TRANSISTOR(SI) TRANSISTOR(SI) TRANSISTOR(SI) TRANSISTOR(SI) TRANSISTOR(SI) (DIODES) DIODE(SI) DIODE(SI) (CERAMIC FILTERS) CERAMIC FILTER

Remarks

S S S S S S S S S S

KX-TC1468LBB

Ref. No. F1

Part No. 264100051001

L502 L503 L504

253200830200 253250830200 252330201801

R1 R2 R3 R4 R6 R8 R9 R10 R11 R12 R15 R16 R17 R18 R19 R21 R501 R503 R504 R509 R510 R511 R512 R513 R514 R517 R518 R520 R522 R524 R531 R533 R534 R536 R537 R541 R543 R544 R551 R561 R562 R569 R571 R577 R578 R585 R593 R604 R606 R609 R610 R611 R619 R621 R622 C582

ERJ3GEYJ153 ERJ3GEY0R00 ERJ3GEYJ273 ERJ3GEYJ104 ERJ3GEYJ152 ERJ3GEYJ224 ERJ3GEYJ274 ERJ3GEYJ303 ERJ3GEYJ563 ERJ3GEYJ333 ERJ3GEYJ683 ERJ3GEYJ224 ERJ3GEYJ223 ERJ3GEYJ394 ERJ3GEYJ273 ERJ3GEYJ223 ERJ3GEYJ184 ERJ3GEYJ330 ERJ3GEYJ102 ERJ3GEYJ102 ERJ3GEYJ680 ERJ3GEYJ101 ERJ3GEYJ221 ERJ3GEYJ101 ERJ3GEYJ391 ERJ3GEYJ100 ERJ3GEYJ153 ERJ3GEYJ103 ERJ3GEYJ103 ERJ3GEYJ221 ERJ3GEYJ103 ERJ3GEYJ393 ERJ3GEYJ821 ERJ3GEYJ153 ERJ3GEYJ221 ERJ3GEYJ102 ERJ3GEYJ561 ERJ3GEYJ561 ERJ3GEYJ393 ERJ3GEYJ101 ERJ3GEYJ124 ERJ3GEYJ103 ERJ3GEYJ102 ERJ3GEYJ101 ERJ3GEYJ274 ERJ3GEY0R00 ERJ3GEYJ102 ERJ3GEYJ471 ERJ3GEYJ123 ERJ3GEYJ123 ERJ3GEYJ513 ERJ3GEYJ273 ERJ3GEY0R00 ERJ3GEY0R00 ERJ3GEY0R00 ERJ3GEY0R00

C1 C2 C3 C4 C6 C7 C8 C9 C10 C11

ECUV1H470JCV ECUV1C104ZFV ECUV1H473MDV ECUV1H040CCV ECUV1C104ZFV ECUV1H330JCV ECUV1C104ZFV ECUV1C104ZFV PQCUV1C105ZF PQCUV1C225ZF

Part Name & Description CERAMIC FILTER (COILS) COIL COIL COIL (RESISOTRS) 15k 0 27k 100k 1.5k 220k 270k 30k 56k 33k 68k 220k 22k 390k 27k 22k 180k 33 1k 1k 68 100 220 100 390 10 15k 10k 10k 220 10k 39k 820 15k 220 1k 560 560 39k 100 120k 10k 1k 100 270k 0 1k 470 12k 12k 51k 27k 0 0 0 0 (CAPACITORS) 47P 0.1 0.047 4P 0.1 33P 0.1 0.1 1 2

Remarks

Ref. No. C12 C13 C14 C15 C17 C19 C20 C21 C22 C23 C24 C25 C28 C29 C30 C31 C32 C33 C34 C35 C36 C37 C38 C39 C40 C41 C500 C502 C503 C504 C505 C519 C521 C526 C527 C530 C533 C534 C535 C536 C537 C538 C539 C541 C542 C543 C545 C546 C549 C554 C556 C559 C560 C561 C562 C563 C564 C565 C566 C567 C568 C569 C570 C571 C572 C573 C574 C575 C578 C583 C586 C590 C591

S S S S

S

49

Part No. ECUV1H680JCV ECUV1C104ZFV ECUV1H102KBV ECUV1H473MD PQCUV1E104MD ECUV1C104ZFV ECUV1H101JCV ECUV1C104ZFV ECUV1C104ZFV ECUV1C104ZFV ECUV1H151JCV ECUV1C104ZFV ECUV1C104ZFV ECUV1C104ZFV PQCUV1C105ZF ECUV1C104ZFV ECUV1C104ZFV ECUV1C104ZFV ECUV1H681JCV ECUV1H682KBV ECUV1H102KBV ECUV1H010CCV ECUV1C104ZFV 240120942834 ECUV1H121JCV ECUV1H121JCV ECUV1H330JCV ECUV1H102KBV ECUV1H680JCV PQCUV1E104MD ECUV1H680JCV ECUV1H070CCV PQCUV1E104MD PQCUV1E104MD ECUV1H030CCV ECUV1H680JCV ECUV1H100DCV PQCUV1C105ZF ECUV1C104ZFV ECUV1H123KBV PQCUV1E104MD PQCUV1C105ZF ECUV1H040CCV ECUV1H102KBV ECUV1H100DCV ECUV1H330JCV ECUV1H040CCV ECUV1H060DCV ECUV1H020CCV ECUV1H040CCV ECUV1H102KBV PQCUV1C224ZF ECUV1H102KBV ECUV1H470JCV ECUV1H220JCV ECUV1H222KBV ECUV1H470JCV ECUV1H020CCV ECUV1H050CCV ECUV1H050CCV ECUV1H102KBV ECUV1H100DCV PQCUV1E104MD ECUV1H680JCV ECUV1H470JCV ECUV1H010CCV ECUV1H060DCV ECUV1H050CCV ECUV1H050CCV ECUV1H330JCV ECUV1H070CCV ECUV1H010CCV ECUV1H123KBV

Part Name & Description 68P 0.1 0.001 0.047 0.1 0.1 100P 0.1 0.1 0.1 150P 0.1 0.1 0.1 1 0.1 0.1 0.1 680P 0.0068 0.001 1P 0.1 12P 120P 120P 33P 0.001 68P 0.1 68P 7P 0.1 0.1 3P 68P 10P 1 0.1 0.012 0.1 1 4P 0.001 10P 33P 4P 6P 2P 4P 0.001 0.22 0.001 47P 22P 0.0022 47P 2P 5P 5P 0.001 10P 0.1 68P 47P 1P 6P 5P 5P 33P 7P 1P 0.012

Remarks

S S

S

S

S S S

S

S

S

S

KX-TC1468LBB

Ref. No. C592 C593 C595 C597 C598 C599 C602 C604 C605 ESC10 R13

Part No. PQCUV1E104MD ECUV1H680JCV ECUV1H100DCV ECUV1H010CCV ECUV1H020CCV ECUV1H120JCV ECUV1H020CCV ECUV1H222KBV ECUV1H221JCV ECUV1C104ZFV ECUV1H102KBV

FL501 T1

251093140116 250076000014

Part Name & Description 0.1 68P 10P 1P 2P 12P 2P 0.0022 220P 0.1 0.001 (OTHERS) DUPLEX TRANS

Remarks S

S S

23.2. Handset 23.2.1. Cabinet and Electrical Parts Ref. No. 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119

Part No. 332385300908 403390020370 404390120370 406390020370 407390020370 407390020375 408391020370 410207004100 420187100100 420197100000 432208500000 461001000000 464100000000 470216031000 470312501000 472021052000 PQWBTC1461 151021208301 151022208301

Part Name & Description SPEAKER CABINET BODY CABINET COVER RID, BATTERY ANTENNA PANEL, LCD LEVER, RINGER KEYBOARD SWITCH SHEET, PET SHEET, PET NAME PLATE COVER, SPEAKER RUBBER CUSHION SPACER ADHESIVE TAPE BATTERY, NI-CD TERMINAL, CHARGE TERMINAL, CHARGE

Remarks S S S S S S S S S S S S S S S S S S

23.2.2. Main P.C.Board Parts Ref. Part No. No. PCB100 PQWP11461LAR U1

273023714112

Q1 Q2 Q3 Q4 Q5

203394090029 203396090000 203396090000 203112090005 203396090000

D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 D13 D16 D17 ZD1

214418000000 214418000000 214418021000 214418021000 214418000000 214418000000 214418000000 214418021000 214418000000 214418000000 214418000000 214418021000 214418021000 214418021000 214418021000 212560600000

Part Name & Description MAIN P.C.BOARD ASS´Y (RTL) (IC) IC (TRANSISTORS) TRANSISTOR(SI) TRANSISTOR(SI) TRANSISTOR(SI) TRANSISTOR(SI) TRANSISTOR(SI) (DIODES) DIODE(SI) DIODE(SI) DIODE(SI) DIODE(SI) DIODE(SI) DIODE(SI) DIODE(SI) DIODE(SI) DIODE(SI) DIODE(SI) DIODE(SI) DIODE(SI) DIODE(SI) DIODE(SI) DIODE(SI) DIODE(SI) (LED)

Remarks

S S S S S S S S S S S S S S S S S S S S S S

50

Ref. No. LED

Part No. 335050300005

L2 L3

PQLQZK680K PQLQZK680K

R1 R2 R4 R5 R6 R7 R8 R12 R14 R15 R16 R18 R22 R23 R24 R28 R29 R30 R31 R32 R33 R34 R35 R36 R37 R39 R40 R41 R43 R44 R45 R46 R48 R53 R54 R55 R56 R63 R65 R67

PQ4R10XJ330 ERJ3GEY0R00 ERJ3GEY0R00 ERJ3GEYJ154 ERJ3GEYJ683 ERJ3GEYJ105 ERJ3GEYJ102 ERJ3GEYJ473 ERJ3GEYJ473 ERJ3GEY0R00 ERJ3GEYJ473 ERJ3GEY0R00 ERJ3GEYJ152 ERJ3GEY0R00 ERDS2TJ394 ERJ3GEYJ154 ERJ3GEYJ472 ERJ3GEYJ222 ERJ3GEYJ682 ERJ3GEYJ104 ERJ3GEYJ104 ERJ3GEYJ103 ERJ3GEYJ103 ERJ3GEYJ103 ERJ3GEYJ473 ERJ3GEYJ103 ERJ3GEYJ104 ERJ3GEYJ104 ERJ3GEYJ104 ERJ3GEYJ103 ERJ3GEYJ103 ERJ3GEYJ152 ERJ3GEYJ105 ERJ3GEYJ104 ERJ3GEYJ103 ERJ3GEYJ201 ERJ3GEYJ220 ERJ3GEYJ222 ERJ3GEYJ103 ERJ3GEYJ102

C1 C2 C3 C8 C38 C40 C43 C44 C58 C201 C202 AC2 AC3 EC2 EC4 EC5 EC13

ECUV1C104ZFV 220100981300 ECUV1H102KBV PQCUV1C225ZF 220100981300 ECUV1H331JCV ECUV1C104ZFV ECUV1H180JCV ECUV1C474ZFV ECUV1C104ZFV ECUV1C104ZFV ECUV1C104ZFV ECUV1H103KBV PQCUV1C105ZF ECEA1AKA101 ECEA1AKA221 PQCUV1C105ZF

BATT CN2 E101 E102 E103 E104 VC1 X1

310020040004 311152020400 330127550100 333609700100 330127550107 324124008040 280300510007 260000400017

Part Name & Description LED (COILS) COIL COIL (RESISTORS) 33 0 0 150k 68k 1M 1k 47k 47k 0 47k 0 1.5k 0 390k 150k 4.7k 2.2k 6.8k 100k 100k 10k 10k 10k 47k 10k 100k 100k 100k 10k 10k 1.5k 1M 100k 10k 200 22 2.2k 10k 1k (CAPACITORS) 0.1 0.1 0.001 2.2 0.01 330P 0.1 18P 0.47 0.1 0.1 0.1 0.01 1 100 220 1 (OTHERS) BATTERY JACK FLAT CABLE RINGER MICROPHONE BUZZER SLIDE SWITCH VARIABLE CAPACITOR CRYSTAL OSCILLATOR

Remarks S

S

S S S

S S S S S S S S

KX-TC1468LBB

23.2.3. RF P.C.Board Parts Ref. Part No. No. PCB200 PQWP21461LAR IC1

274085000000

Q506 Q509 Q510 Q512 Q555 Q556

203403000000 203403000000 203403000000 203505000000 203505000000 203505000000

VD501 VD502

213024000000 213024000000

CF501 F1

264100000000 264100000000

L502 L503 L504 FL501

253201000000 253251000000 252330000000 251096000000

R1 R2 R3 R4 R5 R6 R8 R9 R10 R11 R12 R15 R16 R17 R501 R503 R504 R509 R510 R511 R512 R513 R514 R517 R518 R520 R522 R524 R531 R533 R534 R536 R537 R541 R543 R544 R551 R561 R562 R569 R571 R577 R578 R585 R593 R604 R606 R609 R610

ERJ3GEYJ153 ERJ3GEY0R00 ERJ3GEYJ273 ERJ3GEYJ104 ERJ3GEYJ104 ERJ3GEYJ152 ERJ3GEYJ474 ERJ3GEYJ274 ERJ3GEYJ682 ERJ3GEYJ513 ERJ3GEYJ273 ERJ3GEYJ154 ERJ3GEYJ753 ERJ3GEYJ223 ERJ3GEYJ184 ERJ3GEYJ330 ERJ3GEYJ102 ERJ3GEYJ102 ERJ3GEYJ150 236300000000 ERJ3GEYJ221 236300000000 ERJ3GEYJ101 ERJ3GEYJ100 ERJ3GEYJ153 ERJ3GEYJ103 ERJ3GEYJ103 ERJ3GEYJ221 ERJ3GEYJ103 ERJ3GEYJ303 ERJ3GEYJ821 ERJ3GEYJ153 ERJ3GEYJ221 ERJ3GEYJ102 ERJ3GEYJ331 ERJ3GEYJ331 ERJ3GEYJ203 ERJ3GEYJ101 ERJ3GEYJ124 ERJ3GEYJ103 ERJ3GEYJ102 ERJ3GEYJ101 ERJ3GEYJ274 ERJ3GEY0R00 ERJ3GEYJ102 ERJ3GEYJ471 ERJ3GEYJ123 ERJ3GEYJ123 ERJ3GEYJ513

Part Name & Description RF P.C.BOARD ASS´Y (RTL) (IC) IC (TRANSISTORS) TRANSISTOR(SI) TRANSISTOR(SI) TRANSISTOR(SI) TRANSISTOR(SI) TRANSISTOR(SI) TRANSISTOR(SI) (DIODES) DIODE(SI) DIODE(SI) (CERAMIC FILTERS) CERAMIC FILTER CERAMIC FILTER (COILS) COIL COIL COIL COIL (RESISTORS) 15k 0 27k 100k 100k 1.5k 470k 270k 6.8k 51k 27k 150k 75k 22k 180k 33 1k 1k 15 300 220 300 100 10 15k 10k 10k 220 10k 30k 820 15k 220 1k 330 330 20k 100 120k 10k 1k 100 270k 0 1k 470 12k 12k 51k

Remarks

S S S S S S S S S S S S S S S

S S

51

Ref. No. R611 R619 R621 R622 R16A R16A R16A R16A R16A R16A R16A R16A R16A JR1

Part No. ERJ3GEYJ273 ERJ3GEY0R00 ERJ3GEY0R00 ERJ3GEY0R00 ERJ3GEYJ433 ERJ3GEYJ513 ERJ3GEYJ623 ERJ3GEYJ753 ERJ3GEYJ913 ERJ3GEYJ473 ERJ3GEYJ563 ERJ3GEYJ683 ERJ3GEYJ823 ERJ3GEY0R00

C1 C2 C3 C4 C5 C6 C7 C8 C9 C10 C11 C12 C13 C15 C17 C19 C20 C21 C22 C23 C24 C25 C28 C29 C30 C31 C32 C33 C34 C35 C36 C37 C39 C500 C502 C503 C504 C519 C521 C526 C527 C530 C533 C534 C535 C536 C537 C538 C539 C541 C542 C543 C545 C546 C549 C554 C556 C559

ECUV1H470JCV ECUV1C104ZFV ECUV1H473MDV ECUV1H040CCV ECUV1H221JCV ECUV1C104ZFV ECUV1H331JCV ECUV1C104ZFV ECUV1C104ZFV PQCUV1C105ZF PQCUV1C225ZF ECUV1H680JCV ECUV1C104ZFV ECUV1H473MD ECUV1H103KBV ECUV1C104ZFV ECUV1H101JCV ECUV1C104ZFV ECUV1C104ZFV ECUV1C104ZFV ECUV1H151JCV ECUV1C104ZFV ECUV1C104ZFV ECUV1C104ZFV PQCUV1C105ZF ECUV1C104ZFV ECUV1C104ZFV ECUV1C104ZFV ECUV1H681JCV ECUV1H682KBV ECUV1H122KBV ECUV1H010CCV ECUV1H121JCV ECUV1H330JCV ECUV1H102KBV ECUV1H680JCV ECUV1H103KBV ECUV1H040CCV ECUV1H103KBV ECUV1H103KBV ECUV1H030CCV ECUV1H680JCV ECUV1H100DCV PQCUV1C105ZF ECUV1C104ZFV ECUV1H123KBV PQCUV1E104MD PQCUV1C105ZF ECUV1H040CCV ECUV1H102KBV ECUV1H100DCV ECUV1H330JCV ECUV1H030CCV ECUV1H060DCV ECUV1H020CCV ECUV1H040CCV ECUV1H102KBV PQCUV1C224ZF

Part Name & Description 27k 0 0 0 43k 51k 62k 75k 91k 47k 56k 68k 82k 0 (CAPACITORS) 47P 0.1 0.047 4P 220P 0.1 330P 0.1 0.1 1 2.2 68P 0.1 0.047 0.01 0.1 100P 0.1 0.1 0.1 150P 0.1 0.1 0.1 1 0.1 0.1 0.1 680P 0.0068 0.0012 1P 120P 33P 0.001 68P 0.01 4P 0.01 0.01 3P 68P 10P 1 0.1 0.012 0.1 1 4P 0.001 10P 33P 3P 6P 2P 4P 0.001 0.22

Remarks

S

S

S

S

S

S

KX-TC1468LBB

Ref. No. C560 C561 C562 C563 C564 C565 C566 C567 C568 C569 C570 C571 C572 C573 C574 C575 C578 C582 C583 C586 C590 C591 C592 C593 C595 C597 C598 C599 C602 C604 C605 EC2 ESC10 R13

Part No. ECUV1H102KBV ECUV1H470JCV ECUV1H220JCV ECUV1H222KBV ECUV1H470JCV ECUV1H020CCV ECUV1H050CCV ECUV1H040CCV ECUV1H102KBV ECUV1H100DCV ECUV1H103KBV ECUV1H680JCV ECUV1H470JCV ECUV1H010CCV ECUV1H060DCV ECUV1H060DCV ECUV1H060DCV ECUV1H040CCV ECUV1H330JCV ECUV1H150JCV ECUV1H030CCV ECUV1H123KBV PQCUV1E104MD ECUV1H680JCV ECUV1H100DCV ECUV1H010CCV ECUV1H020CCV ECUV1H150JCV ECUV1H010CCV ECUV1H222KBV ECUV1H270JCV ECEA1HKA3R3 ECUV1C104ZFV ECUV1H102KBV

T1 VR1

250076000000 237472000000

Part Name & Description 0.001 47P 22P 0.0022 47P 2P 5P 4P 0.001 10P 0.01 68P 47P 1P 6P 6P 6P 4P 33P 15P 3P 0.012 0.1 68P 10P 1P 2P 15P 1P 0.0022 27P 3.3 0.1 0.001 (OTHERS) TRANS VARIABLE RESISTOR

Remarks

S

S S S

S S

S S

23.3. Accessories and Packing Materials Ref. No. A1 A2 A3 A4

Part No.

Part Name & Description

651500720600 PQWATC1468LB 435207101000 PQQX13238Y

CORD, TELEPHONE AC ADAPTOR CARD, CHARGE INSTRUCTION BOOK

P1 P2 P3 P4

441208320601 444203317100 444203317200 491320123010

P5

491300010210

P6

PQPK13645Z

ACCESSORY BOX CUSHION CUSHION, ANTENNA PROTECTION COVER (for Unit) PROTECTION COVER Handset) GIFT BOX

Remarks

S S S S Base S (for S

52

KX-TC1468LBB

24 FOR SCHEMATIC DIAGRAM 24.1. Base Unit 1. DC voltage measurements are taken with an oscilloscope or a tester with a ground. 2. The schematic diagrams and circuit board may be modified at any time with the development of new technology. Important Safety Notice: Components identified by ; mark have special characteristics important for safety. When replacing any of these components, use only the manufacturer´s specified parts.

24.2. Handset 1. DC voltage measurements are taken with an oscilloscope or a tester with a ground. 2. The schematic diagrams and circuit board may be modified at any time with the development of new technology.

53

K X -T C 1

25 SCHEMATIC DIAGRAM (Base Unit) 4 6 8 L B B

25.1. Main IC2-C

Input f=1kHz 686mVp-p (-10dBm/600Ω)

IC2-D

(-22dBm) 172mVp-p

Reception

Tip

4.5Vp-p

900mVp-p Ring

-40dBm 22mVp-p Output -20dBm

IC2-A

IC2-B

5V

#" IC2-E

4.5V IC3

LED GREEN IN USE/CHARGE

5V

short

To AC Adaptor

TX To H/S

RX 22R 22k

180R

IC3-19pin

3904

4.7k

IC3-13pin

Flash time option

AR1 (Hi)

AR2 (Lo)

AR3 (Hi)

AR7 (Lo)

100msec

N/C

47k

N/C

47k

300msec

N/C

47k

47k

N/C

600msec

47k

N/C

N/C

47k

(730msec)

47k

N/C

47k

N/C

Pulse Dial % Break

IC3-11pin R53

Remark

(Reserved)

KX-TC1468LBB: SCHEMATIC DIAGRAM(Base Unit) Main

61 %

N/C

67 %

47k

25.2. RF Module TX RX

10.7 MHz 10.7 MHz

25KHz-Dev 1KHz Tone Input

1.75V 0.2V (at CH1) 47N

IC1 220k

##

25KHz-Dev 1KHz Tone Output

Rx VCO

Tx VCO 1.8V 0.15V (at CH1)

Tx VCO

X

K

KX-TC1468LBB: SCHEMATIC DIAGRAM (Base Unit) RF Module B

B

L

8

6

4

1

C

-T

K X -T C 1

26 SCHEMATIC DIAGRAM (Handset) 4 6 8 L B B

26.1. Main 3.6V 3.3V 3Vp-p

300mVp-p

3.3V

490mVp-p (Volume)

3.3V Input 1kHz 10.7mVp-p

#$

3.0 V U1

0R

N/C

47k

TX RX

KX-TC1468LBB: SCHEMATIC DIAGRAM (Handset) Main

26.2. RF Module TX RX

10.7 MHz 10.7 MHz

25KHz-Dev 1KHz Tone Input

1.75V 0.2V (at CH1)

IC1

25KHz-Dev 1KHz Tone Output

Rx VCO

#%

Tx VCO 1.8V 0.15V (at CH1)

6.8k

Tx VCO

KX-TC1468LBB: SCHEMATIC DIAGRAM (Handset) RF Module

B

B

L

8

6

4

1

C

-T

X

K

KX-TC1468LBB

27 CIRCUIT BOARD (Base Unit) 27.1. Main (Component View)

L seize

14

8

IC2 1

7

Power Down

Tx Down SIG_OUT KX-TC1468LBB: BASE UNIT Main (Component View)

58

KX-TC1468LBB

27.2. Main (Flow Solder Side View)

LED P1 (IC3-12)

14

1

IC3 15 28

CHG_DET (IC3-25)

Ring_DET (IC3-26) KX-TC1468LBB: BASE UNIT Main (Flow Solder Side View)

59

KX-TC1468LBB

27.3. Locator (Component View)

KX-TC1468LBB: BASE UNIT Locator (Component View)

27.4. Locator (Flow Solder Side View)

KX-TC1468LBB: BASE UNIT Locator (Flow Solder Side View)

60

KX-TC1468LBB

27.5. RF Module TP510

TP809 (TXVCO) TP808 (RXVCO)

1

56

D_OUT 14

IC1

15

D_IN

28

43 42

29

Tx Data REC_O/P_A KX-TC1468LBB: BASE UNIT RF Module

61

KX-TC1468LBB

28 CIRCUIT BOARD (Handset) 28.1. Main (Component View)

SP_OUT

KX-TC1468LBB: HANDSET Main (Component View)

62

KX-TC1468LBB

28.2. Main (Flow Solder Side View) X1 14

1

U1 15

28

CH_DET (U1-25)

Rec_O/P_B

KX-TC1468LBB: HANDSET Main (Flow Solder Side View)

63

KX-TC1468LBB

28.3. RF Module TP510

TP809 (TXVCO) TP808 (RXVCO)

1 56

VR1 14

IC1

15

Ext_out

28

43 42

29

Pre_out

Tx data DET_out SIG_out KX-TC1468LBB: HANDSET RF Module

64

M KXTC1468LBB-AK