Panasonic KX-TCA385 Service manual

ORDER NO. KMS1308957CE

F19

DECT 6.0 Portable Station

Model No. KX-TCA385

(for U.S.A., Canada)

© Panasonic System Networks Co., Ltd. 2013 Unauthorized copying and distribution is a violation of law.

KX-TCA385

TABLE OF CONTENTS

	PAGE	PAGE
1 Safety Precautions -----------------------------------------------	3	9.6.2. No Link problem (BT) ------------------------------	40
1.1. For Service Technicians ---------------------------------	3	9.7. STM (Start Monitor) -------------------------------------	40
2 Warning --------------------------------------------------------------	4	9.8. Error Message--------------------------------------------	41
2.1. About Lead Free Solder (PbF: Pb free) --------------	4	9.8.1. Need Repair -----------------------------------------	41
2.1.1. Suggested PbF Solder -------------------------------	4	9.8.2. “ERROR 1”, “ERROR 2” --------------------------	41
2.2. Discarding of P. C. Board --------------------------------	4	10 Disassembly and Assembly Instructions --------------	42
3 Specifications ------------------------------------------------------	5	10.1. Handset ----------------------------------------------------	42
4 Technical Descriptions------------------------------------------	6	10.2. PART SETTING (BATTERY COVER and O-
4.1. Block Diagram ----------------------------------------------	6	RING) -------------------------------------------------------	43
4.2. Circuit Operations------------------------------------------	7	10.3. Charger Unit ----------------------------------------------	44
4.2.1. Outline----------------------------------------------------	7	11 Measurements and Adjustments--------------------------	45
4.2.2. Power Supply Circuit / Reset Circuit--------------	7	11.1. Check Procedure (Handset) --------------------------	45
4.2.3. Reset Circuit --------------------------------------------	7	11.1.1. Preparation -------------------------------------------	45
4.2.4. Clock Circuit --------------------------------------------	8	11.1.2. PC Setting --------------------------------------------	45
4.2.5. Bus Access ---------------------------------------------	8	11.2. Adjustment (Handset) ----------------------------------	47
4.2.6. Charge circuit ------------------------------------------	8	11.2.1. Equipment Required -------------------------------	47
4.2.7. Battery Low/Power Down Detector ---------------	9	11.2.2. The Setting Method of JIG------------------------	47
4.2.8. LCD Circuit--------------------------------------------	10	11.2.3. Connections (Handset) ----------------------------	47
4.2.9. LED Circuit --------------------------------------------	11	12 Miscellaneous ---------------------------------------------------	50
4.2.10. Vib Circuit----------------------------------------------	11	12.1. Terminal Guide of the ICs Transistors and
4.2.11. RF Circuit----------------------------------------------	12	Diodes ------------------------------------------------------	50
4.2.12. Bluetooth Circuit -------------------------------------	13	12.1.1. Handset -----------------------------------------------	50
4.2.13. TX Audio Path----------------------------------------	14	12.1.2. Charger------------------------------------------------	50
4.2.14. RX Audio Path ---------------------------------------	15	12.2. How To Replace a Flat Package IC-----------------	51
5 Location of Controls and Components------------------	16	12.2.1. Preparation -------------------------------------------	51
5.1. Name of Controls-----------------------------------------	16	12.2.2. Removal Procedure --------------------------------	51
6 Installation Instructions---------------------------------------	18	12.2.3. Procedure---------------------------------------------	51
6.1. Charger Connection -------------------------------------	18	12.2.4. Removing Solder From Between Pins---------	51
6.2. Battery ------------------------------------------------------	18	12.3. How to Replace the LLP (Leadless Leadframe
6.2.1. Battery Installation ----------------------------------	18	Package) IC-----------------------------------------------	52
6.2.2. Charging the Battery--------------------------------	18	12.3.1. Preparation -------------------------------------------	52
6.2.3. Battery Information----------------------------------	19	12.3.2. Caution ------------------------------------------------	52
6.2.4. Low Battery Warning -------------------------------	19	12.3.3. How to Remove the IC ----------------------------	52
6.2.5. Replacing the Battery ------------------------------	19	12.3.4. How to Install the IC--------------------------------	52
7 Operating Instructions ----------------------------------------	20	12.3.5. How to Remove a Solder Bridge----------------	53
7.1. Soft Keys ---------------------------------------------------	20	13 Schematic Diagram --------------------------------------------	54
7.2. Handset Setting Menu Layout ------------------------	22	13.1. Handset ----------------------------------------------------	54
7.3. Key Lock----------------------------------------------------	23	13.2. Charger-----------------------------------------------------	58
7.4. Selecting the Display Language----------------------	23	14 Printed Circuit Board------------------------------------------	59
7.5. Display ------------------------------------------------------	24	14.1. Handset ----------------------------------------------------	59
7.6. Function Menus-------------------------------------------	25	14.1.1. Component View------------------------------------	59
7.7. Function Keys---------------------------------------------	26	14.1.2. Bottom View------------------------------------------	60
7.8. Flexible CO Keys-----------------------------------------	27	14.2. Charger-----------------------------------------------------	61
7.9. Caller ID ----------------------------------------------------	28	15 Appendix Information of Schematic Diagram --------	62
7.10. Character Mode Table ----------------------------------	29	16 Exploded View and Replacement Parts List-----------	63
8 Firmware Version up-------------------------------------------	30	16.1. IC Data -----------------------------------------------------	63
9 Troubleshooting Guide----------------------------------------	33	16.1.1. IC1 (APU) ---------------------------------------------	63
9.1. Power ON NG---------------------------------------------	33	16.1.2. IC100 (DPU) -----------------------------------------	65
9.2. No Display -------------------------------------------------	34	16.2. Cabinet and Electric Parts-----------------------------	68
9.3. LED Trouble -----------------------------------------------	35	16.2.1. Handset -----------------------------------------------	68
9.3.1. Key backlight does not light-----------------------	35	16.2.2. Charger Unit------------------------------------------	69
9.3.2. Charge LED (BELL LED) does not light -------	35	16.3. Accessories and Packing Materials-----------------	70
9.4. Charge problem ------------------------------------------	37	16.4. Replacement Parts List --------------------------------	71
9.4.1. Handset ------------------------------------------------	37	16.4.1. Handset -----------------------------------------------	71
9.4.2. Charger ------------------------------------------------	38	16.4.2. Charger Unit------------------------------------------	73
9.5. Vibrator Trouble-------------------------------------------	38	16.4.3. Accessories and Packing Materials ------------	73
9.6. RF Trouble -------------------------------------------------	39	16.4.4. Fixtures and Tools ----------------------------------	73
9.6.1. No Link problem (DECT) --------------------------	39

2

KX-TCA385

1Safety Precautions

1.Before servicing, unplug the AC power cord to prevent an electric shock.

2.When replacing parts, use only the manufacturer's recommended components.

3.Check the condition of the power cord. Replace if wear or damage is evident.

4.After servicing, be sure to restore the lead dress, insulation barriers, insulation papers, shields, etc.

5.Before returning the serviced equipment to the customer, be sure to perform the following insulation resistance test to prevent the customer from being exposed to shock hazards.

1.1.For Service Technicians

•Repair service shall be provided in accordance with repair technology information such as service manual so as to prevent fires, injury or electric shock, which can be caused by improper repair work.

1.When repair services are provided, neither the products nor their parts or members shall be remodeled.

2.If a lead wire assembly is supplied as a repair part, the lead wire assembly shall be replaced.

3.FASTON terminals shall be plugged straight in and unplugged straight out.

•ICs and LSIs are vulnerable to static electricity.

When repairing, the following precautions will help prevent recurring malfunctions.

1.Cover plastic parts boxes with aluminum foil.

2.Ground the soldering irons.

3.Use a conductive mat on worktable.

4.Do not grasp IC or LSI pins with bare fingers.

3

KX-TCA385

2 Warning

2.1.About Lead Free Solder (PbF: Pb free)

Note:

In the information below, Pb, the symbol for lead in the periodic table of elements, will refer to standard solder or solder that contains lead.

We will use PbF solder when discussing the lead free solder used in our manufacturing process which is made from Tin (Sn), Silver (Ag), and Copper (Cu).

This model, and others like it, manufactured using lead free solder will have PbF stamped on the PCB. For service and repair work we suggest using the same type of solder.

Caution

•PbF solder has a melting point that is 50 °F ~ 70 °F (30 °C ~ 40 °C) higher than Pb solder. Please use a soldering iron with temperature control and adjust it to 700 °F ± 20 °F (370 °C ± 10 °C).

•Exercise care while using higher temperature soldering irons.:

Do not heat the PCB for too long time in order to prevent solder splash or damage to the PCB.

•PbF solder will tend to splash if it is heated much higher than its melting point, approximately 1100 °F (600 °C).

•When applying PbF solder to double layered boards, please check the component side for excess which may flow onto the opposite side (See the figure below).

2.1.1.Suggested PbF Solder

There are several types of PbF solder available commercially. While this product is manufactured using Tin, Silver, and Copper, (Sn+Ag+Cu), you can also use Tin and Copper, (Sn+Cu), or Tin, Zinc, and Bismuth, (Sn+Zn+Bi). Please check the manufac turer's specific instructions for the melting points of their products and any precautions for using their product with other materials.

The following lead free (PbF) solder wire sizes are recommended for service of this product: 0.3mm, 0.6mm and 1.0mm.

2.2.Discarding of P. C. Board

When discarding P. C. Board, delete all personal information such as telephone directory and caller list or scrap P. C. Board.

4

KX-TCA385

3 Specifications

RF Specifications (DECT 6.0)

RF Specifications (Bluetooth)

5

KX-TCA385

4 Technical Descriptions

4.1.Block Diagram

BL1 LCD

BL2 LCD

LCD_Backlight

0.5

0V.DOUT3

CHG

CHG0v.5

Reg

BT for Supply Power

0.BT3

Supply Power

LED BELL (RED/GREEN)

BL2 LCD

BL1 LCD

-

+

M

Backlight for

,&

IC Port I/O

CHG-IC_

Circuit Charger

0V . 5

CP_ON

ON/OFF

Key_Backlight

WakeUPOUTBT

Vib_Motor

CTRLVib

ONBT

I2C

StateCHG

RESETBT

STATUS

DOUT3.0V

VDDC 1.8

(DPU)

BBIC

,&

I/F DPU-APU

RF

I/F JTAG

I/F Uart

I/F PCM

bus Data / Address

SPI

8KBIO1

GPIO

SPOUTP SPOUTN

	Li-ion		.3
			700mAh / 7v
BAT	TH	BAT
-		+

BATT

DET CHG

CUR CHG

VBAT for Supply Power

0V).VBAT(3

BBIC (APU)

,&

824MH.13	’TALX

HSSPOUTP LOUT	MIN	MIP		I/F RF
			Circuit	RF

Diagram Block UDT131-KX

JTAG

(3pin) CON UART

UNIT BT

Cypress (4MBit) SRAM

Winbond (32MBit) Flash Serial

Matrix Triangle26 Key

ICHX8353)-/Dr Truly 128x160dot LCD Color TFT 8”.1

－

SPEAKER

RECEIVER

MIC

ANT

,&

,&

ANT

6

KX-TCA385

4.2.Circuit Operations

4.2.1.Outline

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

•BBIC (Base Band IC): IC100

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

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

•SRAM: IC101

-Application data and code are temporarily stored.

•Flash ROM (substitute EEPROM): IC102

-Adjustment data, program data and temporary user data are stored.

•RF IC: IC1

-PLL Oscillator

-Detector

-Compress/Expander

-Amplifier for reception

-Amplifier for transmission

•Bluetooth Unit: IC601

4.2.2.Power Supply Circuit / Reset Circuit

The power supply of each IC is as follows.

The Power On Reset is designed to guarantee power-on of the system only when 1.8v and 3.0v voltages exist.

4.2.3.Reset Circuit

The reset signal is generated with IC1(44Pin).

When VBAT3V that is IC202's output exceeds 1.7V, release the Reset

7

KX-TCA385

4.2.4.Clock Circuit

4.2.5.Bus Access

The SRAM is used with an async mode.

4.2.6.Charge circuit

Circuit Operation:

When charging with Charger, the charge current is as follows:

DC+(5.5V) → F1(Charger) → D1(Charger) → IC1(Charger) → L1(Charger) → CHARGE+(Charger) → CHARGE+(Handset) → IC203 → F201 → BATTERY+... BATTERY- → R201 → GND → CHARGE-(Handset) → CHARGE-(Charger) → L2(Charger) → GND(Charger)

In this way, the BBIC(IC1) on Handset detects the fact that the battery is charged.

The charge current is controlled by IC203 of Handset.

Include Charger

Charger current

	J1		5	CONT		CS 4
		F1 D1	6	NC2	FIN	GND 3	C3
	1		7	NC3		NC1 2
			8	VIN		VO 1	GND

29

	IC1	GND
GND	C1	L1	TP3
			CHG+
	GND GND
		C2
		L2	TP4
			CHG-
		GND

Charger

	CHG+
1	CN201	C211
		GND
		R209
		R208
1	CN202	GND
	CHG-	GND

Handset

						F201
		IC203			C206
									+
			11	C218		GND
	R220	1 VCC	BAT 10						Li-ION
		2 ROSC	VSENSE 9					TH	Battery
C213				R216		COUNT			-
		3 LED	FIN RICHG 8
		4 GND	TMRCNT 7	GND			CHG_CUR
		5 VDD	TH 6
				R219	R217					C206
	GND		R218				L2		R201
					GND
				GND		10		7
		R210		CHG_DET		24			GND
		R211				IC1
		GND
			CHG_state			8824

IC100

8

KX-TCA385

•The charge current is controlled by IC203 of Handset. Charge current characteristic is as follows.

Charging method is CCCV. (CC: constant current, CV: constant voltage)

		V, I
		CC charge	CV charge
voltage	4.2	V
Battery	3.97	V
	0 V

Charge stop

CC charge

CV charge

Charge stop

Recharge

Charge current

I mA

Charge complete

I/10 mA

0 mA t

• IC100-88pin (CHG_state)

IC100-88pin (CHG_state)	Charge controll
High	Charging
Low	Charge complete

• When handset is put on charger, handset detects battery charge.

Charge detect	IC1-24pin (CHG_DET)	Charge LED (Red LED)
ON	Above 1.5V	ON
OFF	Below 1.2V	OFF

• TH(IC203-6pin) is temperature detecting pin of battery.

The charge temperature range is 5 degree C to 40 degree C.

If charge temperature is above 40 degree C or below 5 degree C, charge stops.

Charge	Battery temperature
ON	0	°C to 40 °C
OFF	Below 5	°C or above 40 °C

4.2.7. Battery Low/Power Down Detector

"Battery Low" and "Power Down" are detected by BBIC (IC1) which checks the battery voltage. The detected voltage is as follows;

• Battery Low

Battery voltage: V(Batt) 3.4V ± 50mV
The BBIC detects this level and "	“ starts flashing.

• Power Down

Battery voltage: V(Batt) 3.2V ± 50mV

The BBIC detects this level and power down.

9

KX-TCA385

4.2.8.LCD Circuit

•The LCD is controlled by SPI (LCD_SCL, LCD_RESET, LCD_CS, LCD_SID, LCD_CD).

•LCD back-light has 3 modes ( Brightness 1/2/3*) and back-light OFF. *Brightness level: Brightness 1 > Brightness 2 > Brightness 3

Back-light Mode	IC401-4pin (CP_ON)	IC401-2pin (LCD_BL1)	IC401-3pin (LCD_BL2)
Brightness 1	High	High	High
Brightness 2	High	High	Low
Brightness 3	High	Low	Low
Back-light OFF	Low	Low	Low

10

KX-TCA385

4.2.9.LED Circuit

• DPU(IC100) controls each LEDs.

Type of LED	LED ON	LED OFF
Bell LED (Green)	IC401-7pin = High	IC401-7pin = Low
LED531
Bell LED (RED)	IC401-5pin = High	IC401-5pin = Low
LED530
Key back-light LEDs (White)	IC401-3pin = High	IC401-3pin = Low
LED520 - LED525	(Q521 = ON)	(Q521 = OFF)

4.2.10. Vib Circuit

• Vibrator is controlled by IC1-23 pin.

	VIB ON	VIB OFF
IC1-23 pin	High	Low
VOUT of IC501	1.4V	0V

11

KX-TCA385

4.2.11.RF Circuit

Reception

A digital voice signal from LAN is received as "TX_DATA" (*1) by DMW in a cell station.

Then TX_DATA goes to RF part, and it's modulated to 1.9 GHz RF signal. The RF signal is amplified and fed to a selected antenna by antenna diversity .

As for a portable station, RF signal of cell station is received in two antennas.

RFIC(IC1) of portable station compares RF signal levels from cell station and selects the antenna to be used.

RX signal in the selected antenna is amplified and down-converted to 864 kHz IF signal, then demodulated to digital data "RX_DATA".

RFIC(IC1) converts RX_DATA into a voice signal and outputs it to speaker.

Transmission

A voice signal from microphone is encoded to digital data "TX_DATA" by RFIC(IC1) in a portable station.

TX_DATA goes to RF part, and it's modulated to 1.9 GHz RF signal. The RF signal is amplified and fed to a selected antenna by antenna diversity.

As for a cell station, RF signal is received in two antennas.

RFIC of cell station compares RF signal levels from portable station and selects the antenna to be used.

RX signal in the selected antenna is amplified and down-converted to 864 kHz IF signal, then demodulated to digital data "RX_DATA".

DMW is received RX_DATA (*1) as a voice signal from portable station and outputs it to LAN.

Note:

(*1) TX_DATA and RX_DATA are bundled to one signal as "RXTXDATA" of DMW in cell station.

Antenna diversity

TX_RF

CL2

L32

AT_JP2

12

ANT_TP2

C37

2.2n

TX_RF

C49

12

NC

1n

10n

C36

GND

L39

GND

10p

GND

L38

0

L30 4.7n

C35

1.5p

C34

1.5p

D50

C62

NC

C30

1p

C31

1.5p

C48

GND

10p

GND

GND

GND

GND

RX_RF

AT_JP1

GND

C51

L43

12

ANT_TP1

12

CL1

1n

0

TX_RF

RX_RF

C52

VCC_PA

L40

1p

GND

GND

3p

BAL_OUT2

L42

0

L31 2.7n

L35

C47

L33 33p

BAL_OUT1

TX_SW

GND

C50

2.7n

5.6n

ANT1

C41L34

5.1n

C53

RX_SW

D51

C61

NC

C32

1p

C33

1.5p

10p

C43

NC

C42

3p

NC

C39

1.5p

LNA_INP

5p

GND

GND

TO RF BLOCK

ANT2

LNA_INN

GND

GND

GND

GND

GND

GND

GND

VBAT_3.0V

33n

RX_RF

C1

1u

L36

C58

C45

0.5p

C44

100p

0.2p

C3

GND GND

																			1u
																																		GND
51		50		49			48			47			46		45		44	43		42		41			40			39		38		37		36		35
IF_EN_DA IFRX1					IF MLSE			IFT DATA			OFFON OUT ON OFF VCCVCO RSTN P/EXTATSTLNA ATST N LNA INP															LNA INN RX SW TEST ANT2 GND RF											BAL_OUT2					32
_IF NPORST																																					ANT1					34
IF_NARES																																							TX_SW
																																										33
IF_INT_ANA																																					BAL_OUT1
IF_EN_AD																																							VCC_PA			31		(1608)
																																										30
IF_DATA_DA																																					VCC_FE_IF
																																										29			C21 2.2u
IF_DATA_AD																	IC1																						VDD_IF
																																										28
IF_CLK_PLL																																					VBAT_APU
																																										27			C19 (1608)
IF_CLK_IF																																							VDD_APU
																																										26		10u
IF_CDC_DIR																																							XIN
																	GND																									25
IF_CDC_DAT_DA																																							XOUT
																																										24
IF_CDC_DAT_AD																																							DCINS
																																										23
IF_BAT_OK																																							PWM0
																																										22
VDD_ADIF																																							LOUT

ANT2

RX_SW

LNA_INN

LNA_INP

TX_SW

BAL_OUT1

BAL_OUT2

VCC_PA

ANT1

12

KX-TCA385

4.2.12. Bluetooth Circuit

Technical Description for BT unit

1.WHEN IP DATA FOR INCOMING SIGNAL ENTERS FROM IP LINE

a.If KX-TCA385 doesn’t have the registered Bluetooth (BT) Headset, the BT module(IC601) doesn’t work and the BT Headset function can’t use.

b.If KX-TCA385 has the registered Bluetooth Headset,

IC100 (BBIC) inform “incoming call” data to the BT Module by serial Communication (RF/IF) The BT module inform “incoming call” data to the BT Headset by radio transmission.

It is as follows and, specifically, the BT Module generates the radio transmission data and the is radiated.

c.BT Headset detected “incoming call Data”.

BT Headset tells the operator having received a message in “Incoming call”.

2.WHEN A CALLING IS MADE BY THE BLUETOOTH(BT) HEADSET

a.When the operator of BT Headset switches STANDBY to TALK,

TALK mode data enters KX-TCA385 and it is demodulated at the BT module of KX-TCA385.

b.Voice signal is connected between IC100(BBIC) and BT module in a PCM Format. The item of the following explains the operation of transmission and receiver.

3.BT MODULE UNIT RECEIVER OPERATION

BT RF signal is received by a single pattern antenna.

4.BT MODULE UNIT TRANSMISSION OPERATION

BT RF signal is transmitted by a single pattern antenna.

					BT3.0V		R605
	Rx_RF
BT_ANT			L41		R603
	L601
							Q601
GND		Tx_RF		GAP	R602	Tx_Data
	GND	ANT_BT
	GND	2	1		GND

Bluetooth Unit

BT3.0V

C601

	23 22 21 20 19 18 17 16
	GND11	GND10	GND9 GND8 RF GND7 GND6	GND5
24	PIO1
25	PIO2			GND4	15
26	GND12			RESETB	14
27	VCC	IC601		SPI_CLK	13
28	GND13			SPI_MISO	12
29	USB_D+			SPI_CSB	11
30	USB_D-		OUT	SPI_MOSI	10
32	PCM_CLK SYNC			RTS	8
31	PCM_IN			TX	9
	GND1	PCM_	PCM_ GND2 CTS RX GND3
	1 2 3 4 5 6 7

GND

BT3.0V
R607	R606
	Q602

Rx_Data

SPI_CLK

SPI_MISO

SPI_CSB

SPI_MOSI

13

KX-TCA385

4.2.13. TX Audio Path

Microphone

An audio signal from microphone is input to pin 14 (MIC+) and pin 13(MIC-) of IC.

In IC1, the audio signal is converted from the analog signal to ADPCM, then to burst data, and sent to RF cricuit. The stabilized supply voltage is fed to the microphone from pin 17 (MPWR) of IC1.

To reduce consumption current, this voltage is supplied only while calling or receiving.

51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35

VBAT_3.0V

C4

IF RX1 IF MLSE IFT DATA

OFFON OUT ON OFF VCCVCO RSTN

P/EXTATSTLNA ATST N LNA INP

LNA INN

RX SW

TEST ANT2

GND RF

BAL_OUT2 32

L21

C54

54

IF_EN_DA

52

_IF NPORST

ANT1

34

IF_NARES

TX_SW

53

IF_INT_ANA

BAL_OUT1

33

C59

55

IF_EN_AD

VCC_PA

31

(1608)

C18

0

56

IF_DATA_DA

VCC_FE_IF

30

57

IF_DATA_AD

IC1

VDD_IF

29

C21

C60

C17

2

1

2

59

IF_CLK_IF

VDD_APU

27

C19 (1608)

58

IF_CLK_PLL

VBAT_APU

28

R14

X1

4

61

IF_CDC_DIR

XIN

25

GND

4

3

3

60

GND

26

5

62

IF_CDC_DAT_DA

XOUT

24

CHG_DET

VBAT_3.0V

C16

IF_CDC_DAT_AD

DCINS

C23

63

IF_BAT_OK

PWM0

23

VIB_CTRL

GND

ZA4

64

VDD_ADIF

HSMIP

LOUT

22

C40

C15

C324

C329

C330

D304

D305

1

4

Speaker

(1608)

C6

65

DOUBCAPP2 DOUBCAPN1 DOUBCAPP1 DOUT3V0 DOUT4V5 DOUT2V5/DCIN0/LIN0 LEDSINK2/DCIN1 DCIN2 DCIN3/LIN1 LEDSINK1/PWM1 VREF VCCA MIN MIP HSMIN

MPWR

21

C323

4

1

L1

22u

66

COREOUT

SPOUTN

20

Speakerphone_SP-

5

67

VBAT

VCCPA

19

Speakerphone_SP+

L305

68

18

L22

DOUBCAPN2

SPOUTP

5

69

L301

RECEIVER-

3

2

GND

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

GND

L300

RECEIVER+

GND

GND GND

ZA5

DOUT3.0V

GND

D3V

C9

VBG

ZA2

C57

(1608)

C2

R6

(1608)

C13

C303

C304

C308

C309

SPM

1

4

C328

2

3

REV-

VCCA

5

C300

REV+

(1608)

GNDA

R301

5

C14

C314

MIC POWER

C315

(1608)

C326

C327

D302

D303

SPP

3

2

Reciver

4

1

T_3.0V

GNDA

ZA3

SW1

4

R7

C10

RA300

1 4

2 3

1

GNDA

GND GND

GND GND

3

5

GNDA

GNDA

2

BATTERY

R8

C301

C302

R304

MIC+ C331

RA301

C313

L2

MIC+

1

MIC

C12

R9

3

2

AP1

ALM

CURCHG ALM

COUNT

C310

(2125)

R305

MIC-

4

33

C311

C312

D300

D301

2

GND

MIC-

1

R306

GNDA1

GND

GND

GNDA1

GNDA

14

KX-TCA385

4.2.14. RX Audio Path

Receiver

Burst data is input from RF cricuit to IC1.

In IC1, the burst data is converted to ADPCM, then to analog signal, and sent from pin 21 (HSSPOUTP) and pin 22 (LOUT) to the receiver.

Speakerphone

In Speakerphone mode, an audio signal from pin 18 (SPOUTP) and 20(SPOUTN) of IC1 is sent to a monitor speaker.

C4

54

51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35

32

IF_EN_DA

IF RX1 IF MLSE IFT DATA

OFFON OUT ON OFF VCCVCO RSTN P/EXTATSTLNA ATST N LNA INP

LNA INN

RX SW

TEST

ANT2

GNDRF BAL_OUT2

_ IF NPORST

ANT1

L21

52

IF_NARES

TX_SW

34

53

IF_INT_ANA

BAL_OUT1

33

55

IF_EN_AD

VCC_PA

31

(1608)

C18

0

56

IF_DATA_DA

VCC_FE_IF

30

57

IF_DATA_AD

IC1

VDD_IF

29

C21

2

59

IF_CLK_IF

VDD_APU

27

C19 (1608)

58

IF_CLK_PLL

VBAT_APU

28

C60

3

60

IF_CDC_DIR

XIN

26

4

61

IF_CDC_DAT_DA

GND

XOUT

25

5

62

IF_CDC_DAT_AD

DCINS

24

CHG_DET

C23

63

IF_BAT_OK

PWM0

23

VIB_CTRL

64

VDD_ADIF

VCCA

MIN MIP

HSMIN

LOUT

22

C15

(1608)

C6

65

DOUBCAPP2 DOUBCAPN1 DOUBCAPP1 DOUT3V0 DOUT4V5 DOUT2V5/DCIN0/LIN0 LEDSINK2/DCIN1 DCIN2 DCIN3/LIN1 LEDSINK1/PWM1 VREF

HSMIP MPWR

C40

L1

22u

66

COREOUT

SPOUTN

20

67

VBAT

VCCPA

19

68

DOUBCAPN2

SPOUTP

18

L22

69

GND

1 2 3 4 5 6 7 8 9

10 11 12 13 14 15 16 17

D3V

DOUT3.0V

C9

VBG

C57

(1608)

C2

R6

VCCA

(1608)

C13

C303

C304

C308

C309

(1608)

C14

C300

GNDA

T_3.0V

GNDA

SW1

4

R7

C10

RA300

1 4

2 3

1

3

5

GNDA

2

BATTERY

R8

C301

C302

ALM

L2

C12

R9

COUNT

CHGCUR ALM

GND

VBAT_3.0V

C54

C59

	C17			2
VBAT_3.0V	GND		R14	4
	C16
		GND
		C323		C324
			GND
			R301
	C314

GNDA

3 1 X1

Speakerphone_SP-

Speakerphone_SP+

L301	RECEIVER-
L300	RECEIVER+

MIC POWER

		C315	(1608)
		GNDA
		R304
			MIC+
C310	(2125)	R305	MIC-
		R306

								ZA4
								1	4
		L304						2	3
		L305						5
			C329	C330	D304	D305		4	5	Speaker
									1
								3	2
			GND		GND GND			ZA5
				GND
						ZA2
SPM						1	4
				C328		2	3		REV-
						5
									REV+
						5
SPP	C326	C327				3	2			Reciver
			D302	D303		4	1
						ZA3
	GND GND		GND GND
MIC+ C331		RA301				C313		1		MIC
		3	2							AP1
								2
MIC-		4 33	1
			C311	C312	D300	D301
			GNDA1		GND	GND
				GNDA1

GNDA

15

KX-TCA385

5 Location of Controls and Components

5.1.Name of Controls

[Back View]

INT

1 Ringer/Charger Indicator

2TALK/SP-PHONE (Speakerphone) Key

Used to make or answer calls, or toggle between Receiver mode and Hands-free mode during a conversation.

During a conversation using a wired headset, Hands-free mode does not work.

3Navigator Key

The Navigator Key includes four arrow keys and a center key. The arrow keys are used to adjust the ringer/receiver volume or move the cursor to select an item. The center key is used to confirm a selection.

If in standby mode, pressing the keys perform the following functions:

– LEFT (		)	Used to perform various common functions quickly.
– UP (		)	Used to display the Incoming call log.
–	RIGHT (		) Used to display the Flexible Key list.
–	DOWN (		) Used to display the Incoming call log.

– CENTER Used to display the Menu.
In this manual, when a procedure instructs you to "press	", you can also press the
[CENTER] key to confirm the selection.

4HOLD Key

Used to place a call on Hold.

5Silent Mode Key

Used to turn Silent Mode on or off when pressed for more than 2 seconds in standby mode.

6Message Key

Used to leave a message waiting indication, or to call back the party who left a message waiting indication.

7 Receiver

8 Display

16

KX-TCA385

9Soft Keys

The handset features 3 soft keys. By pressing a soft key, you can select the feature shown directly above it on the display.

10POWER/CANCEL Key

Used to end calls, exit the phonebook or Function mode. Press and hold this key to turn the handset on or off.

11TRANSFER/CLEAR Key

Used to transfer a call to another party, or to clear digits or characters.

12INTERCOM Key

Used to make or answer intercom calls.

13Microphone

14Charge Contacts

15Strap Holes

Used to attach phone straps and similar items.

16Speaker

17

KX-TCA385

6 Installation Instructions

6.1.Charger Connection

Connect the AC adaptor to the charger.

To AC Outlet

Hooks

•The AC adaptor should be connected to a vertically oriented or floor-mounted AC outlet. Do not connect the AC adaptor to a ceil- ing-mounted AC outlet, as the weight of the adaptor may cause it to become disconnected.

•Fasten the AC adaptor cord to the cord holder.

•Use only the included Panasonic AC adaptor.

WARNING

•To reduce the risk of fire or electric shock, do not overload AC outlets and extension cords.

•Do not bundle the charger’s AC adaptor cord with the power cords of machines located nearby.

•Completely insert the AC adaptor/power plug into the AC outlet. Failure to do so may cause electric shock and/or excessive heat resulting in a fire.

•Regularly remove any dust, etc. from the AC adaptor/power plug by pulling it from the power outlet, then wiping with a dry cloth. Accumulated dust may cause an insulation defect from moisture, etc. resulting in a fire.

6.2.Battery

6.2.1.Battery Installation

Open the battery cover, insert the battery, and close the cover as indicated below.

• Confirm that the slide switch has been returned to its original position when the cover is closed.

6.2.2.Charging the Battery

At the time of shipment, the battery is not charged.

Please charge the battery for about 3 hours before using the handset for the first time.

• The charge indicator will turn off when the battery is fully charged.

• It is normal for the handset and charger to feel warm while the battery is charging.

• Keep devices sensitive to magnetic fields away from the charger.

• Use only the included charger.

18

KX-TCA385

6.2.3.Battery Information

After battery is fully charged (at 25 °C [77 °F]):

	Operation	Operating Time
	While Talking	Up to about 13 H
	(Backlight off *1, Bluetooth off)
	While not in use	Up to about 200 H
	(Standby)

*1 When the "Talking" setting of "Backlight" is set to "Off".

•Operating time may be shorter than listed above depending on usage conditions and ambient temperature.

•The battery will drain slowly even while the handset is turned off.

•The handset can receive calls while charging.

•Battery consumption increases when the handset is out of range (if " " flashes, turn the handset off).

•Clean the handset and the charger contacts with a soft, dry cloth once a month. Clean more often if the unit is subject to grease, dust or high humidity. Otherwise the battery may not charge properly.

6.2.4.Low Battery Warning

The battery need to be charged in the following situations:

• The battery level indicator displays as empty (“ “) and the alarm sounds*1.

• "Charge Battery" is displayed. In this situation, the handset cannot be operated.

*1 If the low battery warning occurs during a conversation, the handset will turn off in one minute.

6.2.5.Replacing the Battery

If the battery level indicator displays as empty (" ") after using the phone for a short time, even when the battery has been

fully charged, the battery should be replaced.

Before replacing the battery, make sure the low battery warning is displayed, then turn off the power to prevent memory loss. Replace the battery and charge the new battery for about 3 hours.

If you replace the battery before the low battery warning appears, the battery strength icon may display an incorrect reading. In this case, use the handset as normal with the new battery installed.

When the low battery warning is displayed, charge the battery for about 3 hours. The battery strength icon will then display the correct reading.

•Please use Panasonic batteries. For details, consult your administrator or dealer.

•There is a danger of explosion if the battery is incorrectly replaced.

19

KX-TCA385

7 Operating Instructions

7.1.Soft Keys

Icons and information shown on the display will vary depending on the context. To select an item shown on the display, press the corresponding soft key.

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				KX-TCA385
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21

KX-TCA385

7.2.Handset Setting Menu Layout

	Main Item	Sub Item
		&
		(
		$
		'* "
		'
		! )
		! "
		#
		#
	$	#
		%
		#$%
		&$
		"
		$'
		'
		$ $
		+
		%
		%
		#
		( "
		+ !
	%	+ !!
		(
		%
		(
		#$
		( & #

22