If your Acer IPIMBAR REV 102A refuses to boot, here is the diagnostic flow from the service guide:
Populating two modules requires using slots or slots 2 and 4 to enable dual-channel bandwidth.
The four DIMM slots support DDR3 SDRAM, typically at speeds of acer ipimbar rev 102a manual new
Compatible with Intel Core i3, i5, i7 (Sandy Bridge and Ivy Bridge architectures).
Shows system state. Connect positive to pin 2 and negative to pin 4. If your Acer IPIMBAR REV 102A refuses to
[ REAR I/O PORTS ] +------------------------------------+ | [CPU SOCKET] [DIMM 1] | | LGA 1155 [DIMM 2] | | [DIMM 3] | | [DIMM 4] | | [PCIe 3.0 x16] | | [24-Pin ATX] | | [PCIe x1] | | [PCIe x1] [SATA Ports] | | [PCIe x1] | | [F_PANEL Header] | +------------------------------------+ Front Panel Header (F_PANEL)
[ REAR I/O PORTS ] +-----------------------------------+ | [ATX_12V] | | | | LGA 1155 | | CPU SOCKET [CPU_FAN] | | | | [ DIMM 1 ] | | [ DIMM 2 ] | | [ DIMM 3 ] | | [ DIMM 4 ] | | | | [PCIe 3.0 x16] | | | | [PCIe 2.0 x1] [ATX_POWER] | | [PCIe 2.0 x1] | | [PCIe 2.0 x1] [SATA PORTS] | | | | [F_AUDIO] [CLR_CMOS] [F_PANEL] | +-----------------------------------+ Front Panel Header Pinout (F_PANEL) Connect positive to pin 2 and negative to pin 4
Look for the Acer Aspire XC-603 Service Guide or User Manual .
| Pin | Signal | Pin | Signal | | :-- | :------------ | :-- | :------------ | | 1 | HDD LED (+) | 2 | Power LED (+) | | 3 | HDD LED (-) | 4 | Power LED (-) | | 5 | Ground | 6 | Power Switch | | 7 | Reset Switch | 8 | Ground | | 9 | Key (No pin) | 10 | NC (Not Connected) |