Acer Ipisb-vr Rev 1.01 Front Panel

Section C — Diagnostics and fault-finding (3 × 8 = 24 marks) 8. A system with the IPISB-VR front panel shows the power LED lit but no POST and no fan spin. What front-panel and motherboard checks should you perform (stepwise), and what likely faults could cause this symptom? (8 marks) 9. The HDD LED never lights even during disk activity. Explain how to test the LED and header to determine whether the issue is with the LED, wiring, or the motherboard signal. Include expected voltages or multimeter readings for a simple continuity/voltage check. (8 marks) 10. After replacing the front-panel PCB, the USB ports on the panel work but audio does not. Provide a concise fault-isolation plan to determine whether the problem is cable, connector pinout mismatch, header orientation, or motherboard audio settings. (8 marks)

If the PC won't turn on, ensure the Power Switch is on pins 6 and 8. You can briefly bridge these two pins with a screwdriver to test if the board powers up without the case button. acer ipisb-vr rev 1.01 front panel

OEM boards are different from retail boards (like those you buy from ASUS or MSI). Retail boards follow standard layouts. OEM boards are built specifically for the case they come in. Section C — Diagnostics and fault-finding (3 ×

(Note: Pin 1 is usually indicated by a small triangle marker on the board or a missing pin. If your connector has a "Power LED" plug that is 3 pins wide, you may need to separate the individual + and - wires and plug them into the specific isolated spots, or use a multimeter to verify voltage.) (8 marks) 9

Unlike standard retail motherboards that follow Intel’s Front Panel I/O Connectivity Design Guide, Acer uses a proprietary pinout. Plugging a standard PC case’s power switch into this board without a diagram can lead to a system that refuses to boot—or worse, shorted LEDs.

If you buy a retail motherboard, it comes with a manual that has a clear diagram showing you where to plug in the Power Switch, Reset Switch, HDD LED, and Power LED.

Here is your diagnostic checklist: