IBM B50 manual Checkpoint, Description, Repair Action

Checkpoint	Description	Repair Action
(hex)
E122	No memory	1. Replace memory dimm(s)
	detected (system	2. Replace System Planar
	lockup) Note:	3. Replace System Planar
	Harddisk light is on	See “Unresolved problems” on page 3-26
	continuously
E123	No SIMM found in	See “Unresolved problems” on page 3-26
	the socket
E124	Disable defective	See “Unresolved problems” on page 3-26
	memory bank
E125	Clear PCI devices	See “Unresolved problems” on page 3-26
	command reg, go
	forth
E126	Check valid image -	See “Unresolved problems” on page 3-26
	start
E127	Check valid image -	See “Unresolved problems” on page 3-26
	successful
E128	Disable interrupts,	See “Unresolved problems” on page 3-26
	set int vectors for
	O.F.
E129	Validate target RAM	See “Unresolved problems” on page 3-26
	address
E12A	Copy ROM to RAM,	See “Unresolved problems” on page 3-26
	flush cache
E12B	Set MP operational	See “Unresolved problems” on page 3-26
	parameters (eg.
	L.E.?, Real?)
E12C	Set MP CPU node	See “Unresolved problems” on page 3-26
	characteristics
E12D	Park secondary	See “Unresolved problems” on page 3-26
	processors in
	parking lot
E12E	Primary processor	See “Unresolved problems” on page 3-26
	sync
E12F	Unexpected return	See “Unresolved problems” on page 3-26
	from Open Firmware
	(system lockup)
E130	Build device tree	See “Unresolved problems” on page 3-26
E131	Create ROOT node	See “Unresolved problems” on page 3-26
E132	Create CPUs node	See “Unresolved problems” on page 3-26

3-167046 Model B50 Service Guide