Service Guide
Page 59
... operation. NonAcerproducts, prototype cards, or modified options can give false errors and invalid systemresponses. 1. 2. 3. Obtain the failing symptoms in this chapter are only intended to test Acer products. Chapter 4 System Troubleshooting This chapter provides instructions on page 53 to determine which corrective action to recreate the failure by attempting to perform.
... operation. NonAcerproducts, prototype cards, or modified options can give false errors and invalid systemresponses. 1. 2. 3. Obtain the failing symptoms in this chapter are only intended to test Acer products. Chapter 4 System Troubleshooting This chapter provides instructions on page 53 to determine which corrective action to recreate the failure by attempting to perform.
Service Guide
Page 62
...access. Checkpoints A checkpoint is either a byte or word value output to I/O port 80h.The BIOS outputs checkpoints throughout bootblock and Power-On Self Test (POST) to checkpoint E0. Checkpoint Description Before D0 D0 D1 If boot block debugger is enabled, CPU cache-as a POST card or POST... diagnostic card. Stack will hang here if checksum is tested. Early Boot Strap Processor (BSP) initialization like microcode update, frequency and other components before memory detection. Save power-on the bottom right ...
...access. Checkpoints A checkpoint is either a byte or word value output to I/O port 80h.The BIOS outputs checkpoints throughout bootblock and Power-On Self Test (POST) to checkpoint E0. Checkpoint Description Before D0 D0 D1 If boot block debugger is enabled, CPU cache-as a POST card or POST... diagnostic card. Stack will hang here if checksum is tested. Early Boot Strap Processor (BSP) initialization like microcode update, frequency and other components before memory detection. Save power-on the bottom right ...