KX-HDV130RU, RUB - Panasonic PBX Service Manual Supplement (repair manual). Page 11

11

3. Headset Call

Transmitting signal is input from headset microphone 

 input to IC302-pin 

37

 

 A/D conversion, Gain adjustment and echo

cancel by built-in DSP of IC302.
Receiving signal input from IP Line 

 Gain adjustment and D/A conversion by DSP of IC302  IC302-pin

125

 

 output to

headset speaker.

The key data is under the matrix control by IC302.
The key information output from KEY_OUT is input into KEY_IN, when the key is pressed.

The HOOK key is independent from Key Scan Matrix and taken into the port singularly.

From Pin 125(AMPOUT2) of IC302

To Pin 37(SINGIN0) of IC302

C318

MICBIAS

AGND

C304

C315

CL_HEAD_OUT

R306    

AGND

C316

HEAD_IN

R304

R302

CL_HEAD_IN

HEAD_OUT

C317

AGND

AGND

HEAD_IN_GND

AGND

HEAD_OUT_GND

AGND

R307         

R308

D312

AGND

D315

AGND

NC

KEY_IN[0]

KEY_IN[1]

KEY_IN[2]

KEY_IN[3]

KEY_OUT[5]

KEY_IN[4]

KEY_OUT[4]
KEY_OUT[3]

KEY_OUT[0]

KEY_OUT[1]

KEY_OUT[2]

KEY_IN[5]

3

1          2

1

1          2

TRANSFER

1          2

LINE1

1          2

HEADSET

1          2

8

1          2

9

1          2

SP-PHONE

1          2

LINE2

1          2

MESSAGE

1          2

6

1          2

7

1          2

*

1          2

MUTE

1          2

4

1          2

#

1          2

0

1          2

CANCEL

1          2

2

1          2

5

1          2

REDIAL

1          2

CONF

1          2

ENTER

1          2

SOFT1

1          2

SOFT2

1          2

SOFT3

1          2

RIGHT

1          2

VOL-

1          2

LEFT

1          2

UP

1          2

DOWN

1          2

VOL+

1          2

From IC302-Pin 137(KEY_COL5)
From IC302-Pin 56(KEY_COL4)
From IC302-Pin 136(KEY_COL3)
From IC302-Pin 49(KEY_COL2)
From IC302-Pin 130(KEY_COL1)
From IC302-Pin 50(KEY_COL0)

To IC302-Pin 55(KEY_ROW0)

To IC302-Pin 135(KEY_ROW1)

To IC302-Pin 54(KEY_ROW2)

To IC302-Pin 132(KEY_ROW3)

To IC302-Pin 51(KEY_ROW4)

To IC302-Pin 131(KEY_ROW5)

SW101

HOOK SW

1

2

3

4

5

6

DGND

To IC302-Pin 35