IBM 365xX, Hardware Maintenance Manual

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Symptom / Error FRU / Action in Sequence
Two short beeps with
error codes. POST error. See “Numeric Error
Codes” on page 40.
Two short beeps with
blank screen. System Board
No-Beep Symptoms
Symptom / Error FRU / Action in Sequence
No beep, power-on
indicator not on, and
a blank LCD during
POST. 1. Go to “Power Systems
Checkout” on page 34.
2. System Board
3. Power sources
No beep, power-on
indicator on, and a
blank LCD during
POST. 1. System Board
2. CPU Card
No beep, power-on
indicator on, and a
blinking cursor only
during POST. 1. System Board
2. CPU Card
No beep during
POST but system
runs correctly. 1. Turn the volume up and
check the speaker.
2. Speaker / Volume Switch
Assembly
ThinkPad 365X, 365XD (2625)
45