EPAQ-9410
Hardware Programming Reference 0.16
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Copyright © 2019 QEI
Page 34
Add default jumper settings here for all configurable switches, jumpers, etc.
OPTIONS SW1 DIP switches: all four switches are “OFF” (up position)
U1
1: on
2:on
3:on
4:off
5:off
6:on
7:on
8:on
Configure the board for the serial boot mode.
5.3 ePAQ-9410 Motherboard Initial Power Up
Check if any of the power supplies are shorted to ground by measuring the resistance
with a DVM across the following components:
For "+24V" measure across C146: PASS/FAIL
For "+5V" measure across C140: PASS/FAIL
For "+3_3V" measure across C145 (~17 ohms): PASS/FAIL
For "+2.0V" measure across C155: PASS/FAIL
For "USB1_VCC5V" measure across C270: PASS/FAIL
For "USB1_3V3" measure across C157: PASS/FAIL
For "USB+1_8V" measure across C168: PASS/FAIL
For "3V3" measure across C321: PASS/FAIL
For "+VCC_ISO_5V_IRIG_485" measure across C235: PASS/FAIL
For "+VCC_ISO_5V_CH1" measure across C276: PASS/FAIL
For "+VCC_ISO_5V_CH2" measure across C277: PASS/FAIL
For "+VCC_ISO_5V_CH3" measure across C278: PASS/FAIL
For "+VCC_ISO_5V_CH4" measure across C279: PASS/FAIL
Measure the voltage of each power supply with a DVM across the following components
and record the results:
For "+24V" measure across C146:
For "+5V" measure across C140:
For "+3_3V" measure across C145
For "+2.0V" measure across C155:
For "USB1_VCC5V" measure across C270:
For "USB1_3V3" measure across C157:
For "USB+1_8V" measure across C168:
For "3V3" measure across C321:
For "+VCC_ISO_5V_IRIG_485" measure across C235:
For "+VCC_ISO_5V_CH1" measure across C276:
For "+VCC_ISO_5V_CH2" measure across C277:
