IBM 2179, 6643 manual Set Power-On Self-Test to Enhanced

If the POST finishes without detecting any problems, a single beep sounds and the first screen of the operating system or application program appears.

Note:

Types 2179 and 6643 computers default to come up quiet (no beep and no memory count and checkpoint code display) when no errors are detected by POST.

To enable beep and memory count and checkpoint code display when a successful POST occurs, do the following:

1.Select Start Options in the Configuration/Setup Utility program (see “Setup Utility program” on page 5).

2.Set Power-On Self-Test to Enhanced.

If the POST detects a problem, an error message appears on the screen. A single problem can cause several error messages to appear. When you correct the cause of the first error message, the other error messages probably will not appear on the screen the next time you turn on the system.

POST Error Code	FRU/Action
161	1.	Run Setup, reload defaults, set
Bad CMOS battery
		Date/Time
	2.	CMOS Backup Battery (see “Safety
		information” on page 102)
	3.	System Board
162	1.	Run Setup, reload defaults, set
CMOS checksum error
		Date/Time
	2.	CMOS Backup Battery (see “Safety
		information” on page 102)
	3.	System Board
163	1.	Time and Date Set?
Clock not updating or invalid time set
	2.	CMOS Backup Battery (see “Safety
		information” on page 102)
	3.	System Board
164	1.	Run Setup. Check System Summary
POST detected a memory size decrease
		menu for memory size change. (See
		“Setup Utility program” on page 5.)
	2.	Run the Extended Memory Diagnostic
		tests
301 Keyboard error	1.	Keyboard
	2.	Keyboard Cable
	3.	System Board
662 Diskette drive configuration error	1.	Diskette drive configuration error or
		wrong diskette drive type. Run Setup
		Configuration
1762	1.	Run Configuration. (See “Setup Utility
Hard disk drive configuration error
		program” on page 5.) This occurs when
		a drive is added or removed.

Chapter 5. Symptom-to-FRU Index 55