Power Supply Tray Led; Fan Assembly Status Leds; Section 4 Troubleshooting; Introduction - ABB Symphony Harmony Series Instructions Manual

Troubleshooting

Introduction

Troubleshooting Procedures

Table 4-1. Power Supply Tray LED
LED LED State
Status Green
Off
Table 4-2. Fan Assembly Status LEDs
LED
Temperature
Fan status
WBPEEUI210509A0
This section provides troubleshooting tables containing trou-
bleshooting procedures to help locate and correct MPSIII sys-
tem problems. These are general troubleshooting guidelines
and are not exhaustive of all possible causes.
Tables 4-1 and
are listed by LED state, cause, and corrective action. Use these
tables to correct power system problems that are revealed by
LEDs on the power supply tray (Table 4-1) and the fan assem-
bly (Table 4-2).
Cause
Normal Operation.
Output voltage under
threshold or temperature
over threshold.
LED
Problem
State
Off Normal operation.
Red Fan assembly over
selected temperature
Off Normal operation.
Red One or more fan assem-
bly fans are under speed.
4-2 contain troubleshooting procedures that
Corrective Action
None.
1. If the cabinet temperature is over 70°C
(144°F), reduce cabinet temperature.
2. If cabinet temperature is OK, replace power
supply tray (refer to
None.
Reduce cabinet temperature.
None.
Disable door fan monitor. If fan status LED
is still red, replace fan assembly (refer to
Section 6). If fan status LED turns off,
replace optional door fan.
Section 4
Section 6).
Corrective Action
4 - 1