jcs
Member
I recapped an M5126 and swapped its PMGR chip and everything seems to be working now, except internal SCSI termination power. With it booted, I show 12V on SCSI pins 31 and 32 but only about 2.3V on pins 33 and 34. The middle pin on the floppy interface shows 5.2V, as do other 5V things like the I/O interfaces.
Q211 shows 6.6V. I found this diagram for the M5120 showing 5V on SCSI comes from C20 but there's no C20 on the M5126. What feeds the 5V into the SCSI connector?
Q211 shows 6.6V. I found this diagram for the M5120 showing 5V on SCSI comes from C20 but there's no C20 on the M5126. What feeds the 5V into the SCSI connector?