Kodak DirectView CR 825 - Page 98

THEORY GUIDE Logic and Control
10DEC05
TG4825-1
Page
98 of 120
Checking of BOARDS During Initializing
When the CR 825/850 SYSTEM is energized, an initializing process occurs, in which
BOARDS and software operations are checked and hardware components are moved to the
home position. When the CR 825/850 SYSTEM is successfully initialized, the main menu
appears on the TOUCH SCREEN MONITOR.
Sequence of operations during initializing:
INTERNAL PC • The software of the INTERNAL PC checks all the system components:
– memory
– DISK DRIVES
– KEYBOARD and MOUSE
– network hardware
• The operating system loads and starts running. The software for the
CR 825/850 SYSTEM starts automatically when the operating system is
running. The first component to energize is the MCPU BOARD A2.
MCPU BOARD
A2
• The BOOT CODE of the MCPU BOARD A2 provides configuration
information for the MICROCONTROLLER and checks the memory.
• The BOOT CODE checks the main application program on the PCMCIA
CARD under the MCPU BOARD A2 and loads it into the main memory
of the MCPU BOARD A2.
• The application program for the CR 825/850 SYSTEM starts.
• The BOOT CODE checks that the MCPU BOARD A2 signals can be
sent between the MSC BOARD and the INTERNAL PC.
• The BOOT CODE of the MCPU BOARD A2 reads the calibration data
stored on the PCMCIA CARD.
• The BOOT CODE of the MCPU BOARD A2 checks the DIGITIZER
BOARD A3 using a diagnostic program on the DIGITIZER BOARD A3.