DOWNLOAD Panasonic KX-HDV20RU Service Manual ↓ Size: 2.63 MB | Pages: 32 in PDF or view online for FREE

9

LCD data are output from pin 3 of IC101 to LCD module.
LCD contrast is set by electronic control in LCD module.
The driving voltage(about 16V) is observed at pin15 of CN101.
The lighting of the backlight is controlled by Q101.
The PWM (Pulse Width Modulation) signal is output from IC101 (pin 30) pin and the brightness is changed according to its duty
ratio.

HDV20 has a USB-HUB IC(IC103) and the USB interface supports the full-speed data rate of 12 Mbit/s.
(HDV230 base unit <--> HDV20 unit, Upper HDV20 unit <--> Lower HDV20 unit)
Up to 5 tally units can be connected by cascading.

nLCD_CS

nLCD_RST

LCD_SCL

LCD_SID

LCD_CD

LCD_BL

IC101

10

9

8

4

3

30

nLCD_CS

LCD_CD

nLCD_RST

LCD_SCL

LCD_SID

DG

3.3V

DG

CN101

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

LCD_TEST

C149

C150

C148

DG

C146

L106

C163

DG

C164

DG

L110

R162

L204

R161

C128

C166

C167

DG

DG

R158

C147

LCD_BL

5V

DG

TP_LCD_A1

DG

R138

TP_LCD_K1

C112

L114

R137

LCD_BLA

LCD_BLK

Q101

C165

D627

D626

SLCD_A

SLCD_K

D625

D628

R625

R626

R627

R628

Self-Label Back Light

UPPER DSS

or HDV230

JK101

LOWER DSS

JK102

USB HUB

IC103

USB_1

USB_2

DCX81

IC101

USB_3

VBUS_IN

VBUS_OUT

10

Self-labeling LCD
For details about the self-labeling LCD.
DSS Keys [01–20] (Function Keys

Used to perform the assigned function. When a key is assigned as a Line key, it can be used to
confirm the status of the line. The key name that you assigned is displayed on the KX-HDV20’s
self-labeling LCD. For details about changing the DSS keys.
DSS Page Key

Used to switch the page of DSS keys displayed on the KX-HDV20 self-labeling LCD. 

*1 In this manual, "Function key" refers to both program keys and DSS keys.
*2 These keys can be used when you connect a KX-HDV20 to the unit.

11

Connect the Ethernet cable, the Handset Cord and the AC adaptor (Option) to the unit.

*2

*3

*5

*4

*1

*1 DSS cable

Connect the DSS cable as shown in the illustration.

*2 PoE HUB
*3 Optional AC adaptor
*4 Optional EHS headset

For up-to-date information about EHS headsets that have been tested with this unit.

*5 Optional headset

For up-to-date information about headsets that have been tested with this unit.

The initial setting for the IP address is "DHCP—Auto". For information about your network environment, 
contact your administrator.

Use flexible cables without jack covers. Do not use cables with a hard coating that may tear or crack when bent.
To prevent damage to the cables, use cables that do not protrude from the bottom of the base.
Connect the cables as shown in the following illustration.

*1

*1 60 mm (2 3/8 in) or less
Use a straight CAT 5e (or higher) Ethernet cable (not included) that is 6.5 mm (1/4 in) in diameter or less.

If PoE is available, an AC adaptor is not needed.
This unit complies with the PoE Class 2 standard.

The PC port does not support PoE for connected devices.

Pass the Ethernet cable and the AC adaptor cord under the stand.

12

• Customer's Unit(HDV20) and Main Unit(HDV230)
• HDV230's  AC adoptor(Do not use PoE HuB)
• a dedicated cable for HDV20 connection.

1. connected to HDV230 with a dedicated cable.
2. Push [1][*][Trans] and connect power plug (AC adaptor).
3. Wait until LCD displays [factory mode]. Then release the three keys.
4. Then the LCD displays [HOOK Test]. Press [#].
5. Then the LCD displays [DSS Test]. 

1. Check LED

Push [4] (HDV230) -  All HDV20 red LEDs turn on 
Push [5] (HDV230) -  All HDV20 blue LEDs turn on 
Push [6] (HDV230) -  All HDV20 LEDs turn off 
Push [7] (HDV230) -  All HDV20 LED Backlight turn off (while pushed the key)

2. Reset

Push [8] (HDV230) -  Restart HDV20 after a few seconds.

3. KEY Check

Press any key of HDV20,then the key name is displayed on LCD.
Check all keys of HDV20.

4. Check HDV20's LCD 

Push [SP] (HDV230)  -  All HDV20 red LEDs turn on 

5. Then the LCD displays [DSS Test]. 

HDV20

cable

Customer's Unit

Main Unit