Led Indications - NEC UX5000 Hardware Manual

Chapter 2 - PCB Installation and Startup
SLT Line
Interface
#1- #4
SLT Line
Interface
#5- #8
BUSY LED
(Status for Trunk Lines)
ON: Extension(s)
in Use
OFF: Idle
LIVE LED
(Status LED)
2.5.2.1

LED Indications

Live LED
Flashing
(1 second)
Flashing
(100 ms)
2 - 42
CN2
CN3
Pin Number
Location
8
7
6
5
2
1
Figure 2-22: 8SLIU PCB - COMPONENT SIDE VIEW
LED Indication
Busy LED
(green) (red)
On On
On
Flashing
(1 second)
On
Off
Off On
Off
Flashing
(100 ms)
Spacers hole X4
(For SLIDB)
Analog Station I/F Circuit #1
CN2
Analog Station I/F Circuit #2
Analog Station I/F Circuit #3
CN3
Analog Station I/F Circuit #4
Analog Station I/F Circuit #5
Analog Station I/F Circuit #6
Analog Station I/F Circuit #7
Analog Station I/F Circuit #8
Ringer / MW lamp power Circuit
Operation Status
PCB Initializing
PCB assignment refused (system
capacity exceeded or software
version incorrect)
Trouble found during self-
diagnostics routine.
Normal Operation
Blocked PCB
Downloading firmware
Daughter Board I/F
(For SLIDB)
CN1
Common
Control
Circuit
CN4
Operation Status
At least 1 channel busy
All channels idle
At least 1 channel busy
All channels idle
Chapter 2