ASROCK SBC-250 Service-Handbuch

* eDP Connector

(on the Backside of PCB)

12 :

CPU FAN Connector

(+12V)

13 : SATA Power Output Connector

14 :

M.2 Key-E Socket

8 :

Backlight & Amp Volume Control

(BLT_VOL1)

: Backlight Power Select

(LCD_BLT_VCC)

(BKT_PWR1)

1-2 : LCD_BLT_VCC: +5V

2-3 : LCD_BLT_VCC: +12V

4-5 : LCD_BLT_VCC: DC_IN

10 : Inverter Power Control Wafer

(BLT_PWR1)

11 :

LVDS Panel Connector

Front Panel Audio Header

: 3W Audio AMP Output Wafer

3 : DACC1

Open : No ACC

Short : ACC

* Auto clear CMOS when system boot improperly.

4 : Clear CMOS Header (CLRMOS2)

Open : Normal

Short : Auto Clear CMOS (Power O󰀨)

: ATX/AT Mode Jumper (SIO_AT1)

Open : ATX Mode

Short : AT Mode

6 : 2-Pin Buzzer Header

7 : Panel Power Selection (LCD_VCC)

(PNL_PWR1)

1-2 : +3V

2-3 : +5V

3-4 : +5V

4-5 : +12V

Jumpers and Headers Setting Guide

SBC-250

The terms HDMI® and HDMI High-Denition

Multimedia Interface, and the HDMI logo are

trademarks or registered trademarks of HDMI

Licensing LLC in the United States and other

countries.

Revision History

Date Description

December 14, 2021 First Release

J_SENSE

OUT2_L

MIC_RET

PRESENCE#

GND

OUT2_R

MIC2_R

MIC2_L

OUT_RET

1PIN Signal Name

1 SPK L-

2 SPK L+

3 SPK R+

4 SPK R-

+5V

SPKR

PIN Signal Name

1 GPIO_VOL_UP

2 GPIO_VOL_DW

3 PWRDN

4 GPIO_BLT_UP

5 GPIO_BLT_DW

6 GND

7 GND

PIN Signal Name

1 GND

2 GND

3 BL CTL

4 BL EN

5 LCD_BLT_VCC

6 LCD_BLT_VCC

7 eDP_BKLTCTL

8 eDP_BKLTEN

39 40

PIN Signal Name PIN Signal Name

39 LCD_BLT_VCC 40 LCD_BLT_VCC

37 CON_LBKLT_CTL 38 LCD_BLT_VCC

35 GND 36 CON_LBKLT_EN

33 LVDS_B_CLK# 34 LVDS_B_CLK

31 LVDS_B_DATA3 32 GND

29 DPLVDD_EN 30 LVDS_B_DATA3#

27 LVDS_B_DATA2# 28 LVDS_B_DATA2

25 LVDS_B_DATA1 26 GND

23 GND 24 LVDS_B_DATA1#

21 LVDS_B_DATA0# 22 LVDS_B_DATA0

19 LVDS_A_CLK 20 GND

17 GND 18 LVDS_A_CLK#

15 LVDS_A_DATA3# 16 LVDS_A_DATA3

13 LVDS_A_DATA2 14 GND

11 GND 12 LVDS_A_DATA2#

9 LVDS_A_DATA1# 10 LVDS_A_DATA1

7 LVDS_A_DATA0 8 GND

5 LDDC_DATA 6 LVDS_A_DATA0#

3 +3.3V 4 LDDC_CLK

1 LCD_VCC 2 LCD_VCC

PIN Signal Name

40 NA

39 LCD_BLT_VCC

38 LCD_BLT_VCC

37 LCD_BLT_VCC

36 LCD_BLT_VCC

35 SMB_CLK_MAIN

34 SMB_DATA_MAIN

33 eDP_BKLTCTL_R

32 eDP_BKLTEN

31 GND

30 GND

29 GND

28 GND

27 eDP_HPD_CON

26 GND

25 GND

24 GND

23 GND

22 NA

21 LCD_VCC

20 LCD_VCC

19 LCD_VCC

18 LCD_VCC

17 GND

16 eDP_AUX#_CON

15 eDP_AUX_CON

14 GND

13 eDP_TX0_CON

12 eDP_TX#0_CON

11 GND

10 eDP_TX1_CON

9 eDP_TX#1_CON

8 GND

7 eDP_TX2_CON

6 eDP_TX#2_CON

5 GND

4 eDP_TX3_CON

3 eDP_TX#3_CON

2 GND

1 NA

EDP1

FAN_SPEED

FAN_SPEED_CONTROL

+12V

GND

+5V

+12V

GND

19 : COM Port Pin9 PWR Setting Jumpers

PWR_COM3 (For COM Port3)

PWR_COM4 (For COM Port4)

1-2 : +5V

2-3 : +12V

20 :

COM1, 2, 3, 4 Headers

: GPIO Default Setting (JGPIO_SET1)

1-2 : Pull-High

2-3 : Pull-Low

22 : CAN1_2

23 : ESPI Connector

24 :

Digital Input / Output Pin Header

(JGPIO1)

25 : USB2.0 Connectors

(USB2_5_6,

USB2_7_8)

15 :

M.2 Key-M Socket

16 :

M.2 Key-B Socket

17 :

SATA3 Connector

(SATA3_1)

18 : 4-pin DC-in PWR Connector

(Input +12V)

1-4 : GND

2-3 : DC Input

26 :

System Panel Header

27 : USB3.2 Gen1 Connector (USB3_1_2)

28 : UAR2 Header

29 : LAN Port (LAN2)

30 : LAN Port (LAN1)

31 : HDMI Port (HDMI1)

32 : Top : USB2.0 Port (USB3_3)

Bottom : USB3.2 Gen1 Port (USB3_4)

33 : Brightness Control Mode (BLT_PWM1)

1-2 : From eDP PWM to CON_LBKLT_CTL

2-3 : From LVDS PWM to CON_LBKLT_CTL

* Please set to 1-2 when adjusting brightness by Brightness Control bar under OS.

* Please set to 2-3 when adjusting brightness by BLT_VOL1.

34 : VGA Port (VGA1)

Backside :

EDP Connector (EDP1. Refer to No. 11)

SIM Socket (SIM1)

PIN RS232 RS422 RS485

1 DCD TX- RTX-

2 RXD RX+ N/A

3 TXD TX+ RTX+

4 DTR RX- N/A

5 GND GND GND

6 DSR N/A N/A

7 RTS N/A N/A

8 CTS N/A N/A

9COM1, 2: N/A

COM3, 4: PWR

COM1, 2: N/A

COM3, 4: PWR

COM1, 2: N/A

COM3, 4: PWR

* This motherboard supports RS232/422/485 on COM3 port. Please refer to below

table for the pin denition. In addition, COM3 port (RS232/422/485) can be adjusted

in BIOS setup utility > Advanced Screen > Super IO Conguration. You may refer to

our user manual for details.

COM Port Pin Denition

GND

RESET#

PWRBTN#

PLED-

PLED+

GND

HDLED-

HDLED+

GND

PIN Signal Name PIN Signal Name

9 GPIO 10 NC

7 GND 8 GND

5 CAN1_RX0 6 CAN2_RX0

3 CAN1_TX0 4 CAN2_TX0

1 +3VSB 2 +3VSB

910

PIN Signal Name PIN Signal Name

10 GND 9JGPIO_PWR

8SIO_GP33 7SIO_GP37

6SIO_GP32 5SIO_GP36

4SIO_GP31 3SIO_GP35

2SIO_GP30 1SIO_GP34

DUMMY

GND GND

-B

-A

USB_PWR USB_PWR

IntA_PB_D+

Dummy

IntA_PB_D-

GND

IntA_PB_SSTX+

GND

IntA_PB_SSTX-

IntA_PB_SSRX+

IntA_PB_SSRX-

Vbus

IntA_PA_SSRX-

IntA_PA_SSRX+

GND

IntA_PA_SSTX-

IntA_PA_SSTX+

GND

IntA_PA_D-

IntA_PA_D+

Installation of ROM Socket

* Do not apply force to the actuator cover after ic inserted.

* Do not apply force to actuator cover when it is opening over 120

degree, Otherwise, the actuator cover may be broken.

* The yellow dot (Pin1) on the ROM must be installed at pin1 position of

the socket (white arrow area).

* Make sure the white dot on the ROM is installed outwards of the

socket.

* For further details of how to install ROM, please refer to ASRI website.

Warning: If the installation does not follow as the picture, then it

may cause severe damage to chipset & MB.

PIN Signal

Name PIN Signal

Name

2UART_

RRXD 4GND 6GND 8UART_

CCTS# 10 X

1GND 3UART_

TTXD 5GND 7UART_

RRTS# 9GND

PCIE_TXN

PCIE_TXP

PCIE_RXP

PCIE_RXN

PERn0

PERp0

PETn0

PETp0

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