Problem booting a KA660-A (VAX 4000-200)

[marmotking]

I have a working VAX 4000-200 and bought a spare CPU board for it. I plugged in the spare board and it seems to hang when starting the OS boot process. I've included the log below. I looked through the KA660 technical reference and couldn't find what might be hanging at this point in the boot process. I'm assuming that I can simply boot from the same OS image as the original CPU. I compared the few jumpers on both boards and they are the same. I even validated the EPROM contents to be the same. Is the spare CPU board bad or is there something else I should be trying/aware of? You can see from the log here that it does in fact pass all it's tests. Any help would be appreciated before I attempt to return this otherwise great looking board!

KA660-A V3.7, VMB 2.12
Performing normal system tests.
95..94..93..92..91..90..89..88..87..86..85..84..83..82..81..80..
79..78..77..76..75..74..73..72..71..70..69..68..67..66..65..64..
63..62..61..60..59..58..57..56..55..54..53..52..51..50..49..48..
47..46..45..44..43..42..41..40..39..38..37..36..35..34..33..32..
31..30..29..28..27..26..25..24..23..22..21..20..19..18..17..16..
15..14..13..12..11..10..09..08..07..06..05..04..03..
Tests completed.
>>>boot dia5
(BOOT/R5:0 DIA5)

2..
-CAP05$DIA5


Normally at this point you get a "1..0.." and then it boots into the OS. But with the spare board, it just hangs after the last line shown above.