IBM 390E manual 304-1 to

Error	Code	304-1 to 304-199
Error	Code		Test(s)	Message
304«1			BATTERY	No	battery	installed
				No	battery	detected
304«199			BATTERY	General battery failure

FRU/Action in Sequence:

ŸBattery pack

Ÿ DC-DC & BATT board ASM

ŸSystem board

Error Code 415-1 to 415-250

Error Code	Test(s)	Message
415-1	MODEM	PNPISA		modem		detected
		but		not	enabled
		PCI		modem		detected	but
		not	enabled
		Modem		not		detected
415-250	COM/Modem	Modem		ATZ
		No	dial		tone detected

FRU/Action in Sequence:

ŸReseat Modem card

ŸModem card

ŸSystem board

ThinkPad 390E 59