Chapter 44-74.2.3 SRAM Circuit Board 0014-1298imagePRESS C1 P / imagePRESS C1 / imagePRESS C1+ (Printer) / imagePRESS C1+Primary control of the SRAM Circuit Board is shown below for each IC.F-4-5T-4-74.3 Start-Up Sequence4.3.1 Overview 0014-1299imagePRESS C1 P / imagePRESS C1 / imagePRESS C1+ (Printer) / imagePRESS C1+System software used to control this unit is stored on HDD.At startup, the CPU on the Main Controller Circuit Board loads system software from the HDD into work memory (DDR-SDRAM) on the Main Controller CircuitBoard in accordance with the BOOT ROM boot program and launches it.The screen shown in the figure below is displayed on the Operation Panel while the CPU loads system software from the HDD and during initialization (of memoryand other system resources). Progress status is represented by a Progress Bar displayed on-screen.F-4-6Display of the Progress Bar indicates that the HDD is being accessed. Do not turn off power during this time, as this may lead to malfunction of the HDD (E602).4.3.2 Startup Sequence 0014-1300imagePRESS C1 P / imagePRESS C1 / imagePRESS C1+ (Printer) / imagePRESS C1+IC No. FunctionIC1, 2 (SRAM) Saves image data management information, service mode settings data, and user mode settings data saved on the HDDIC2IC1BAT1Front BackProgress bar
