Common troubleshooting and engineering recommendations
Possible causes and solutions for the fault phenomenon
Power on, no display, CPU not installed/memory not properly plugged in/insufficient power supply. Check LGA1151 CPU installation and re plug SODIMM to ensure ATX power is compatible
SATA hard drive does not recognize SATA mode, improper setting or DOM power supply error. Check SATA Mode in BIOS and confirm JPL11 jumper setting
MSATA does not recognize JPMSATA2. JPMSATA2 is not set to mSATA mode. Change JPMSATA2 to 2-3
SER1 communication abnormal mode switch does not match with external device; Power supply setting error check SWS1M mode, verify JPS3P2 power supply selection
LVDS shows no display or backlight does not light up. Panel voltage/backlight voltage/polarity settings are incorrect. Check JPL6/JPL8/JPL4/JPL5 and confirm that they are consistent with LCD specifications
The system does not start automatically (after AC power failure). In the BIOS, the Power Up Mode is set to 'Remain off' and changed to 'Turn On' or 'Last State'
Watchdog not triggered Power Up Watchdog disabled by F12 or not enabled to check watchdog settings, does not press F12 when restarting
SEMA status LED flashes with specific code BMC detects hardware abnormality and checks against abnormal code table (such as BIOD_FAIL, NOVCORE, PG)
Dual BIOS unable to switch SW2 switch not set correctly Confirm switch status for positions 1 and 2
Unable to refresh BIOS BIOS write protection enabled check JPL9/JPL10, short circuit 1-2 (BMC control) and retry
AMT function is unavailable. BIOS write protection enabled or ME is not configured correctly to disable write protection. Enter MEBx to set AMT
Power consumption reference (measured data):
The typical load of the 7th generation Core i7-7700 is about 87W, and the full load is about 123W.
The low-power i7-7700T (35W) has a typical load of about 46W and a full load of about 102W.
The typical load of i3-7101TE (35W) is about 39.8W, and the full load is about 54.7W.
S3 sleep mode power consumption is about 0.45W( 5Vsb@0.09A ).
Suitable heat sinks and power supplies (recommended ≥ 150W) need to be selected according to the CPU TDP.
