User guide

EN Formatter system 77
Flash memory or ROM
The formatter system includes firmware code that controls the
product stored in either flash memory or ROM, depending on when
the product was manufactured. Initially the formatters in all
manufactured units are built with flash memory. As the product
manufacturing matures, the code is stored in standard read-only-
memory (ROM).
Units with firmware code in flash memory allow the firmware code to
be recovered or updated. The firmware update/recovery process is
described in Chapter 6. Units with firmware code in ROM will not
require firmware code recovery or updating.
Standard Boot Process
When the product is unplugged or the power is off, the firmware code
is stored on the formatter in two blocks. The first block of code is an
executable boot block (about 64K of code). The second block of code
is a compressed version of the product control code.
When the product is powered up, the boot block decompresses the
product control code and stores it in RAM. Then the product performs
a full startup with the control code running from RAM.
Product startup messages
The LED display contains different messages depending upon the
progress of the boot process:
Table 13. Product startup messages
Message Cause Solution
(Blank display for many
seconds after power
on). Boot block failure.
The flash memory
requires a DIMM
recovery of the
firmware code (see
Chapter 6).
Contact Service
Control code failure. The flash memory
requires a DIMM
recovery of the
firmware code (see
Chapter 6).
Hewlett Packard
<<<
Moving cursor HP
display. The product is
starting up.
Wait until Ready
display.
Ready.........
Product startup is
complete and the
product is ready for
action.
Begin using product.