Hi
I have 2 PB 3400 logic boards (a 180, a 240) that exhibit similar
symptoms, the disease is acute sleeping sickness, the device that is
probably the cause is the PMU IC, a variation of the 68HC05 made for
Apple by Motorola. It's chip Number SC428009PV, 341S0187-B PMU, 1995
Apple,
Hi Roger:
Have you tried to boot from a known good System Folder
on an external SCSI HDD? During my troubles (which may
not be over, yet) any powered up SCSI device would
enable booting from the internal HDD.
What may have tipped the scale to normal behaviour was
some combination of
Hi
I have 2 PB 3400 logic boards (a 180, a 240) that exhibit similar
symptoms, the disease is acute sleeping sickness, the device that is
probably the cause is the PMU IC, a variation of the 68HC05 made for
Apple by Motorola. It's chip Number SC428009PV, 341S0187-B PMU, 1995
Apple,
-Original Message-
From: PowerBooks [mailto:[EMAIL PROTECTED] Behalf Of
Roger Volk
Sent: Wednesday, August 06, 2003 4:25 PM
To: PowerBooks
Subject: PB 3400 Logic Board component level repair
Hi
I have 2 PB 3400 logic boards (a 180, a 240) that exhibit similar
symptoms
Tom,
I used the easter egg method and swapped, the PMU board, and PRAM battery
and then followed the troubleshooting logic in the Apple service manual.
Once I had completed that and tried swapping the keyboard the service manual
suggests replacing the logic board. Looking at the system
Roger, have you tried this approach?
http://download.info.apple.com/Apple_Support_Area/Apple_Software_Updates/English-North_American/Macintosh/Utilities/Firmware_Utilities/1.2GB_Firmware_Utility_1.1.img.bin
and
George,
The sleep LED comes on after a normal start up chime and no amount of reseting
will clear it. I have attempted to boot from a floppy and the system CD with no
success.
Both of these devices work on another 3400.
Roger
George Mogiljansky wrote:
Roger, have you tried this
At 11:25 AM -0400 8/6/2003, Roger Volk wrote:
Hi
I have 2 PB 3400 logic boards (a 180, a 240) that exhibit similar
symptoms, the disease is acute sleeping sickness, the device that is
probably the cause is the PMU IC, a variation of the 68HC05 made for
Apple by Motorola. It's chip Number
