HP DESIGNJET 3D, Руководство по обслуживанию

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SW2
SW5
SW6
Memory
There are three types of memory contained on the controller board.
• Dual Port RAM: The communication buffer between the controller
board and the single board computer. Events (from the controller),
commands (from the SBC), and motion control vertices (from the
SBC) are passed through the P104 connector joining the two
boards.
• Flash Memory: Where the executable code resides.
Battery backup RAM; Where the controller board stores the following system
parameters:
1. Results of last power-on self test (POST)
2. Results of certain built-in diagnostic tests, if used
3. Exception trace, which is a list of the most recent exception messages
logged on the controller board
4.State information, which stores printer state when it is powered off
(includes things like the type of gantry, whether material is loaded,
the UDN, etc.).
LEDs
There are 11 LEDs located on the controller board. A grouping of three (D1-
D3) are located on the lower left side. The other group of eight (D6-D13) are
located on the upper right side. D1-D3 are lit when their associated voltage,
as shown in table below, is present. The 3.3 VDC supply is generated on the
Number (in white) Description Default
16-24 Unused Off
Number (in white) Description Default
8-15 Unused Off
Number (in white) Description Default
0 Run built-in self test (BIST) Off
1 Load Firmware (turn on when using SND-
BIN.EXE)
Off
2 Disable door latching Off
3 Unused Off
4 Don’t reset controller when in command is
issued
Off
5 Disable WatchDog timer Off
6 Enable use of dc commands Off
7 Unused Off