IBM 7985, Problem Determination And Service Manual

Page: 45 / 218

No-beep symptoms
v Follow the suggested actions in the order in which they are listed in the Action column until the problem
is solved.
v
See Chapter 4, “Parts listing, System x3655, Type 7985 and 7943,” on page 93 to determine which
components are customer replaceable units (CRU) and which components are field replaceable units
(FRU).
v
If an action step is preceded by “(Trained service technician only),” that step must be performed only by a
trained service technician.
No-beep symptom Description Action
No beep and the system
operates correctly
Possible problem with the operator
information panel.
1. Reseat the operator information panel
cable.
2. Replace the operator information panel
assembly.
No beep and no video
(System error LED is
OFF)
Unknown problem See “Solving undetermined problems” on page
89.
No beep and no video
(System Attention LED is
ON)
A possible system error has occurred See “Light path diagnostics” on page 49.
Chapter 3. Diagnostics
27