3 Jan
2006
3 Jan
'06
5:18 p.m.
While the RL02 was still in Fault mode, I also entered
the
"Toggle-In Program" from the RL02 Disk Subsystem User's Guide,
Appendix C and it returned 102210 which is WGE (Write Gate Error)
i.e. either Write Protect was set, or a sector pulse occurred
during the write operation.
I think I should be looking inside the RL02 on the logic board but
can someone with more diagnostic-pack experience tell me if this
is actually a controller problem?
I think it could be either. What it basically means is that the drive
detected a write-gate signal to be asserted at the time when the servo
bursts are about to come round -- that is outside the user data area. To
protect the impossible-to-rewrite factory formatting, the drive disables
write and retracts the heads if this happens.
It could either be a fault in the drive (holding the write-gate line on),
but this is unliely given that it reads correctly, or a problem with the
controller which asserts weite-gate for too long, or when it shouldn't.
-tony