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5 power-on self test (boot check) – Philips CF-30FTSAZAM User Manual

Page 13

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5 Power-On Self Test (Boot Check)

Outline of POST

The set has a boot check function called POST (Power-On Self Test) in it.

The condition of the main body is diagnosed by checking beep sound or error code.

Start .............Test begins automatically when power switch is set to ON.
Normal finish .....After memory checking, a beep sound is issued once and the set is placed into automatic stop.

Note: If no error occurs, nothing is displayed. (No display of OK, etc.)

Error Diagnosis by Checking Beep Signal Sound

The beep sound is as follows:

= long sound (about 0.4 sec.), = short sound (about 0.2 sec.), Length between sounds is about 0.1 sec.

Table of errors classified by beep sounds

(1 (long sound) -2-3-4)

(Length of bar shows length of sound.)

Diagnosis

Beep signal sound

Error message

1(long sound)-2

BIOS ROM error

BIOS ROM error

RAM error

Keyboard controller error

RAM error

RAM error

RAM error

1-2-2-3

1-3-1-1

1-3-1-3

1-3-4-1

1-3-4-3

1-4-1-1

BIOS ROM error

2-1-2-3

Occurrence of unexpected offering

2-2-3-1

Main board

(Note) A beep sound is also issued in case of other I/O trouble.

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