IBM totalstorage 200, Service Manual

Page: 34 / 180

Symptoms that have no beep codes
Table 3 lists symptoms with no beep codes and suggested actions.
Table 3. Symptoms that have no beep codes
No Beep System Meaning Suspected Parts/Suggested Actions
No beep but the system
operates correctly. Check speaker cables. If the problem persists,
suspect the following parts:
1. Speaker
2. System Board
No beeps occur after
successfully completing
POST. The Power-on Status is
disabled Rerun the BIOS Configuration and Update diskette.
No ac power Power Supply AC LED is off Suspected parts:
v
Power Backplane
v
Hot-Swap Power AC Inlet Box
Suggested actions:
1. Check the power cord.
2. Exchange the unlit power supply with a power
supply that has a Power Supply AC LED on. This
will determine if the unlit power supply is
defective.
No beep and no video Refer to “Undetermined Problems” on page 41.
System will not power-on AC Power LED is on Refer to “Power Supply LED errors” on page 27.
Information panel System Error LED
The System Error LED is switched on when an error is detected. If the System
Error LED is on, remove the cover and check the diagnostic panel LEDs (in the
upper right corner of the system board). Table 4 on page 19 is a complete list of
diagnostic panel LEDs and the suggested action.
Note: If a diagnostic panel LED is on and the information LED panel system error
LED is off, there is probably an LED problem. Run the light-panel diagnostics
by pressing
F2 (see “Light-path diagnostics” on page 6).
Notes:
1. To locate the LEDs on the processor board see “System board” on page 46.
2. Check the System Error Log for additional information before replacing a part.
3. The DIMM error LEDs, processor error LEDs, and VRM error LEDs turn off
when the system is switched off.
18
Models 200 and 225 Service Guide