HP-54110D Oscilloscope error codes help plz?

[Floppy_Disk]

Hi, does anyone have a maintenance/repair manual for this scope? I am getting the following error message when I go into the error reporting menu:


Loop: 60
Executions=0
failures=0
Status 1 = -32768
Status 2 = -32768
Status 3 = -32768
Status 4 = -32768
Cumulative failures: 21



Also, if anyone happens to know, I am curious why this unit has 4 plug ins, implying 4 channels, while according to the manual, it only has 2 channels.

Any help in fixing this would be much appreciated.

 

[Floppy_Disk]

turned it on a second time after letting it warm up, and now I'm getting some more "cumulative failures":
21
23
27
28
30
31
32
33
44
45
46
47
48
49
50
51
52
53
54
55
56
57

 

[(*steve*)]

Have you checked the sticky post regarding datasheet searching? It has a number of suggestions for places which have manuals too.