5-24 Problem Solving
Table 5-1. Power On LCD Error Messages (continued)
Error Message Description Action
SystemBusU-Err 3 Uncorrectable host bus (CPU backboard
#2 system bus) error
Check if the CPU and CPU
backboard #2 are mounted
correctly. If the same error still
occurs when they are mounted
correctly, call your service
representative.
L3 A-tag Err 1 L3 cache address tag parity error of CPU
backboard #1
Call your service representative,
and replace CPU backboard #1.
L3 A-tag Err 2 L3 cache address tag parity error of CPU
backboard #2
Call your service representative,
and replace CPU backboard #2.
L3 cache U-Err 1 Uncorrectable L3 cache error of CPU
backboard #1
Call your service representative,
and replace CPU backboard #1.
L3 cache U-Err 2 Uncorrectable L3 cache error of CPU
backboard #2
Call your service representative,
and replace CPU backboard #2.
L3 cache C-Err 1 Correctable L3 cache error of CPU
backboard #1
Call your service representative,
and replace CPU backboard #1.
L3 cache C-Err 2 Correctable L3 cache error of CPU
backboard #2
Call your service representative,
and replace CPU backboard #2.
WDT timeout Watchdog timer timeout Call your service representative.