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 3, “Parts listing,” on page 59 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.
Beep code
Description
Action
1-2-2-3
BIOS ROM checksum
1. Use the recover system BIOS procedure.
For instructions, see “Recovering from a
BIOS update failure” on page 48.
2. (Trained service technician only) Replace
the system-board tray.
1-3-1-1
Test DRAM refresh
1. Reseat the following components:
a. DIMM
b. System-board
tray
2. Replace the following components one at a
time, in the order shown, restarting the
system-board tray each time:
a. DIMM
b. (Trained service technician only)
System-board tray
1-3-1-3
Test 8742 keyboard controller
Replace the keyboard.
1-3-4-1
RAM failure on address line
xxxx
where
xxxx
is the failing address line or
bits.
1. Reseat the following components:
a. DIMM
b. System-board
tray
2. Replace the following components one at a
time, in the order shown, restarting the
system-board tray each time:
a. DIMM
b. (Trained service technician only)
System-board tray
1-3-4-3
RAM failure on data bits xxxx of low byte
of memory bus
where
xxxx
is the failing address line or
bits.
1. Reseat the following components:
a. DIMM
b. System-board
tray
2. Replace the following components one at a
time, in the order shown, restarting the
system-board tray each time:
a. DIMM
b. (Trained service technician only)
System-board tray
1-4-1-1
RAM failure on data bits
xxxx
of high
byte of memory bus
where
xxxx
is the failing address line or
bits.
1. Reseat the following components:
a. DIMM
b. System-board
tray
2. Replace the following components one at a
time, in the order shown, restarting the
system-board tray each time:
a. DIMM
b. (Trained service technician only)
System-board tray
Chapter 2. Diagnostics
13
