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Installation
JBAT1: Clear CMOS Setting (13)
If the board refuses to boot due to inappropriate CMOS settings here is how
to proceed to clear (reset) the CMOS to its default values.
Connector type: 2.00 mm pitch 1x3-pin headers
Pin
Mode
1-2
Keep CMOS (Default)
2
3
1
2-3
Clear CMOS
2
3
1
You may need to clear the CMOS if your system cannot boot up because you
forgot your password, the CPU clock setup is incorrect, or the CMOS settings
need to be reset to default values after the system BIOS has been updated.
Refer to the following solutions to reset your CMOS setting:
Solution A:
1. Power off the system and disconnect the power cable.
2. Place a shunt to short pin 1 and pin 2 of JBAT1 for five seconds.
3. Place the shunt back to pin 2 and pin 3 of JBAT1.
4. Power on the system.
Solution B:
If the CPU Clock setup is incorrect, you may not be able to boot up. In this
case, follow these instructions:
1. Turn the system off, then on again. The CPU will automatically boot up
using standard parameters.
2. As the system boots, enter BIOS and set up the CPU clock.
Note:
If you are unable to enter BIOS setup, turn the system on and off a few
times.
Summary of Contents for EmModule-621E
Page 1: ...EmModule 621E PC 104 CPU Module User s Manual Version 1 0 2009 11 85 85...
Page 2: ...This page is intentionally left blank...
Page 5: ...Introduction 1 Chapter 1 Introduction Chapter 1 Introduction...
Page 11: ...Introduction 1 10 Board Dimensions Unit mm...
Page 12: ...Introduction Unit mm...
Page 13: ...Installation 2 Chapter 2 Installation Chapter 2 Installation...
Page 29: ...25 BIOS 3 Chapter 3 BIOS Chapter 3 BIOS...
Page 47: ...43 BIOS 3 8 PC Health Status Current CPU Temperature CPU MEM VCore VCC3 5V 12V VBAT V 5VSB...
Page 57: ...53 Appendix 4 Chapter 4 Appendix Chapter 4 Appendix...
Page 64: ...60 Appendix This page is intentionally left blank...