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)

Ensure you did not shift the connectors over by one pin vertically or horizontally.

Unlike standard consumer motherboards with clearly labeled F_PANEL headers, the IPISB-VR uses a non-standard 14-pin layout, often with no labels printed on the PCB. acer ipisb-vr rev 1.01 front panel

The is a proprietary motherboard often found in pre-built systems like the Gateway DX4860 . Because Acer does not provide a standard public manual for this board, identifying the front panel pinout is the most common hurdle for those moving the board to a new case. Front Panel Header Pinout

Pins 2, 4, 6, 8, 10 (missing), 12, 14. Bottom Row (Odd Numbers): Pins 1, 3, 5, 7, 9, 11, 13. Pinout Configuration Section C — Diagnostics and fault-finding (3 ×

The front USB and audio headers might also be non-standard, though many utilize traditional, albeit cramped, layouts.

Starts from the inside (closest to the CPU) towards the outside edge. (8 marks) 9

This behavior indicates a short circuit or an unseated component.

The is a proprietary motherboard commonly found in Acer desktops like the Aspire M3970, M3920, or AM3970 series.

: If your case lights don't turn on, try flipping the connector. Unlike switches, LEDs only work when the positive and negative leads are correctly aligned. Proprietary Hurdles

: The Power and Reset switches are "momentary" connections and will work regardless of which way the plug is facing.