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Dual Node Module Service
3-13
9/95
3.3.9
3.3.9 NGI Board
SELF TST/ERR
light does not go out.
• Ensure that NGIO board is properly installed.
• Replace NGI board.
• Replace NGIO board.
SELF TST/ERR
light goes out, but
PASS MOD TEST
(green) light does not light on
one controller.
• Replace NGI board, and then the other NGI board in slot below it, if present (three-
board, redundant cable node).
• Replace K2LCN/K4LCN.
SELF TST/ERR
light goes out, but
PASS MOD TEST
(green) light does not light on
all controllers.
• Replace K2LCN/K4LCN.
• Replace NGI board, then apply power. Repeat for other NGI board, if present. Retry
extracted boards.
BUS TRAN ERR
light is lighted on controller, and
DTAK TIME OUT
is lighted on
the K2LCN/K4LCN.
• Replace NGI board, then apply power. Repeat for other NGI board, if present. Retry
extracted boards.
• Replace K2LCN/K4LCN.
BUS TRAN ERR
light is lighted on a controller, and
BGAK TIME OUT
is lighted on
the K2LCN/K4LCN.
• Replace NGI board, then apply power. Repeat for other NGI board, if present. Retry
extracted boards.
• Replace K2LCN/K4LCN.
The TX (yellow) light indicates transmit activity. If this light is not on, troubleshoot the
Plant Information Network (PIN) cables and other interfaces.
CAUTION
There is a test jumper on the front of the NGI board (near the indicator lamps described
above). This jumper has two positions, TEST and NORMAL. This jumper should always be in
the NORMAL position when the network is operating. Placing this jumper in the TEST
position may disrupt operation of other nodes operating on the PIN.
Содержание LC13-510
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