IBM B50 manual E1DC, E1DD, E1DE, E1DF

Checkpoint	Description	Repair Action
(hex)
E1DC	Dynamic console	If a console is attached but nothing is displayed on it,
	selection	follow the steps associated with “All display problems”
		in the Entry MAP tables.
		If selection screen(s) can be seen on the terminals and
		the appropriate key on the input device associated with
		the desired display or terminal is pressed, within
		approximately 60 seconds, but there is no response to
		the keystrokes:
		1. If selecting the console with a keyboard attached
		to the system, replace the keyboard. If replacing
		the keyboard does not fix the problem, replace
		system board (see note 3 on page 2-1).
		2. If selecting the console with an ASCII terminal,
		suspect the ASCII terminal. Use the Problem
		Determination Procedures for the terminal.
		Replace system board (see note 3 on page 2-1).if
		these procedures do not reveal a problem.
		Note:	Terminal settings should be set to :
			9600 Baud
			No Parity
			8 Data bits
			1 Stop bit
E1DD	Early processor	Replace system board (see note 3 on page 2-1).
	exception	See “Unresolved problems” on page 3-26
E1DE	Alternating pattern	Replace system board (see note 3 on page 2-1).
	of E1DE and E1AD	See “Unresolved problems” on page 3-26
	is used to indicate a
	"Default Catch"
	condition before the
	Open Firmware
	"checkpoint" word
	(function) is
	available.
E1DF	Create diskette drive	See “Unresolved problems” on page 3-26
	(disk) node
E1E0	Program flash	See “Unresolved problems” on page 3-26
E1E1	Flash update	See “Unresolved problems” on page 3-26
	complete
E1E2	Initialize System I/O	See “Unresolved problems” on page 3-26
E1E3	PReP boot image	See “Unresolved problems” on page 3-26
	initialization
E1E4	Initialize Super I/O	See “Unresolved problems” on page 3-26
	with default values

Chapter 3. Error Code to FRU Index 3-21