NCR 7600 - Page 17

Product Overview 9
•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
Runtime CoolingCom‐
ponent/CPU
OverTempera‐
ture
Flashes
red/green,
thensolid
redastem‐
perature
increases
N/A 1. Checkforblocked
coolingvents
2. Checkforexcessive
ambienttemperature
3. Checkcooling
components
POST CPU CPUnotOper‐
ating
ON ON 1. Checkforcorrectly
installedCPU
2. ReplaceMotherboar
POST BIOSChip BIOSCheck‐
sumFailure
ON Flashing
(4/Sec)
1. PerformBIOScrisis
recover
2. ReplaceBIOSchip
3. ReplaceMotherboard
POST Memory MemoryIssue
ON Flashing
(1/Sec)
4. Checkforproperly
installedmemory
5. Replacememory
6. ReplaceMotherboard
POST Motherboard NoDisplay
ON Flashing
1/4Sec)
ReplaceMotherboard
Current System
Operation
Suspect Component System State Power LED
Disk Activity
LED
Corrective Action