DOWNLOAD Panasonic KX-TDA6178X / KX-TDA6178XJ (serv.man8) Service Manual ↓ Size: 256.23 KB | Pages: 4 in PDF or view online for FREE

3

KX-TDA6178X/KX-TDA6178XJ

Change from the Original Service Manual Section 3.

Functional Block

Functional contents

Extension Interface

Number of Ports

24 ports

SLT Interface

-26V 26mA Feeding function

(Voltage in ports 1-8 are switched over to -45V, depending on the circuit dis-
tance.)

Dial-pulse signal detecting function
DTMF signal detecting function
Bell signal issuing function
Hook detecting function
Ringtrip detecting function
2W/4W converting function
Surge protective function
CODEC function

• Test function (Loop back, Tone generation)
• Programmable digital filtering function
• Serial interface function
• PIO function

DTMF Receiver

24 lines for each port

Caller ID (FSK)

24 lines for each port

On-board Ringer

20/25Hz 65Vrms
Phase control (Three-phase / Four-phase)

On-board DC/DC Power Supply

Input +15V
Output +3.3V
Input +40V
Output : VBAT(The required negative battery voltage). 
The battery voltage generation circuit intelligently tracks the VBAT voltage to the optimal value under each
operating state (e.g. on-hook, off-hook, ringing, etc.)

Power Failure Forwarding Function

4 lines supported

ASIC

EC bus interface function
H.100 bus interface function, Digital PLL function
Local bus interface function
Time switch function, Gain controlling function, FIFO/DPRAM function
Intelligent PIO function

Control Unit

CPU

SH-1/SH7020 (12.288MHz)

Flash ROM

512Kbyte

SRAM

128Kbyte

PLD

• Interface between codec and CPU
• Lattice MachX02 LCMXO2-640HC-4TG100C

LED Display Circuit

Card status indicating LED: Two colors (Red/Green)

External Interface Connector

Extension interface

50pin Amphenol connector: 1

Power failure forwarding 4pin modular jack: 1

4

KX-TDA6178X/KX-TDA6178XJ

Change from the Original Service Manual Section 5.2.6.

NM

KXTDA6178X

KXTDA6178XJ

TA

RA

C313A

CN201

2

DIAG_T

RL201A

6

7

5

CN201

3

DIAG_R

RL201A

3

2

4

C313B

DG

C302A

C303A

C302B

C303B

VBATa

J300A

DG

DG

R310A

R308A

R309A

R308B

R309B

D

305A

C

304A

DG

D

304A

FG

C

305A

C

321A

C3

1

0

A

R315A

R316A

C3

0

9

A

L300A

DG

DG

R314A

D

301A

1

2

C308A

L301A

+40V

DG

Q300A

S

1 2 3

G

4

D

5 6 7 8

Q301A

S

D

G

CN200

26

1

C307A

IC300A

TIPa

1

SRINGDCa

5

SRINGACa

6

STIPACa

7

STIPDCa

8

SVBATa

11

SDCHa

20

SDCLa

21

DCDRVa

22

DCFFa

23

DCFFb

24

STIPDCb

38

STIPACb

39

SRINGACb

40

SRINGDCb

41

RINGa

59

R319A

R318A

R313A

R306A

R306B

R307A

R307B

RL200A

9

10

8

RL200A

4

3

5

R317A

R260A

R261A

m

b

m

b

b

m

m

b

SDCL

SDCH

DCDRV

TIP

(Port1-8)

0

-45V

RING

(Port9-24)

-26V

Voltage and current generated by the SLIC is supplied to the phones.

Preset voltage is -45V(port1-8), -26V (port9-24) (On-hook).

Current is set as 26mA (Off-hook).

4

KX-TDA6178X/KX-TDA6178XJ

Change from the Original Service Manual Section 5.2.6.

NM

KXTDA6178X

KXTDA6178XJ

TA

RA

C313A

CN201

2

DIAG_T

RL201A

6

7

5

CN201

3

DIAG_R

RL201A

3

2

4

C313B

DG

C302A

C303A

C302B

C303B

VBATa

J300A

DG

DG

R310A

R308A

R309A

R308B

R309B

D

305A

C

304A

DG

D

304A

FG

C

305A

C

321A

C3

1

0

A

R315A

R316A

C3

0

9

A

L300A

DG

DG

R314A

D

301A

1

2

C308A

L301A

+40V

DG

Q300A

S

1 2 3

G

4

D

5 6 7 8

Q301A

S

D

G

CN200

26

1

C307A

IC300A

TIPa

1

SRINGDCa

5

SRINGACa

6

STIPACa

7

STIPDCa

8

SVBATa

11

SDCHa

20

SDCLa

21

DCDRVa

22

DCFFa

23

DCFFb

24

STIPDCb

38

STIPACb

39

SRINGACb

40

SRINGDCb

41

RINGa

59

R319A

R318A

R313A

R306A

R306B

R307A

R307B

RL200A

9

10

8

RL200A

4

3

5

R317A

R260A

R261A

m

b

m

b

b

m

m

b

SDCL

SDCH

DCDRV

TIP

(Port1-8)

0

-45V

RING

(Port9-24)

-26V

Voltage and current generated by the SLIC is supplied to the phones.

Preset voltage is -45V(port1-8), -26V (port9-24) (On-hook).

Current is set as 26mA (Off-hook).

4

KX-TDA6178X/KX-TDA6178XJ

Change from the Original Service Manual Section 5.2.6.

NM

KXTDA6178X

KXTDA6178XJ

TA

RA

C313A

CN201

2

DIAG_T

RL201A

6

7

5

CN201

3

DIAG_R

RL201A

3

2

4

C313B

DG

C302A

C303A

C302B

C303B

VBATa

J300A

DG

DG

R310A

R308A

R309A

R308B

R309B

D

305A

C

304A

DG

D

304A

FG

C

305A

C

321A

C3

1

0

A

R315A

R316A

C3

0

9

A

L300A

DG

DG

R314A

D

301A

1

2

C308A

L301A

+40V

DG

Q300A

S

1 2 3

G

4

D

5 6 7 8

Q301A

S

D

G

CN200

26

1

C307A

IC300A

TIPa

1

SRINGDCa

5

SRINGACa

6

STIPACa

7

STIPDCa

8

SVBATa

11

SDCHa

20

SDCLa

21

DCDRVa

22

DCFFa

23

DCFFb

24

STIPDCb

38

STIPACb

39

SRINGACb

40

SRINGDCb

41

RINGa

59

R319A

R318A

R313A

R306A

R306B

R307A

R307B

RL200A

9

10

8

RL200A

4

3

5

R317A

R260A

R261A

m

b

m

b

b

m

m

b

SDCL

SDCH

DCDRV

TIP

(Port1-8)

0

-45V

RING

(Port9-24)

-26V

Voltage and current generated by the SLIC is supplied to the phones.

Preset voltage is -45V(port1-8), -26V (port9-24) (On-hook).

Current is set as 26mA (Off-hook).