NCR RealPOS 50, User Manual

Page: 19 / 158

Product Overview 1-9
LED Diagnostic Indicators
The two front panel LEDs also function as diagnostic indicators, defined as follows.
Note: The cell colors indicate the color of the LED at that particular time.
Current System
Operation
Suspect Component System State Power LED
Disk Activity
LED
Corrective Action
Normal Opera ‐
tion
N/A System ON ON OFF N/A
Normal Opera ‐
tion
N/A System ON
with HDD
Activity
ON Flashing
(HDD
Access)
N/A
Normal Opera ‐
tion
N/A Unit in Sus ‐
pend (S3)
Blinking (1/
Sec)
ON N/A
‐ OFF
‐ AC Present
N/A • OFF
• Not in
Standby
• External P/S
ON
OFF ON N/A
• OFF
• AC Present
Power System • OFF
• Not in
Standby
• External P/S
ON
OFF OFF 1. Check AC power to
P/S
2. Check P/S
3. Check connection
between unit and P/S
4. Check power
connection from Back
Panel to Motherboard
and Motherboard to
Front Panel
5. Replace P/S
6. Replace Motherboard
7. Replace Front Panel
Board