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The first four bits specify the signal sent to pin 1 of the HC board test point
cable accessed via the PD board.
Setting Signal
0 focus error
1 lens positioning servo error
2 write laser power servo error
3 beam positioning servo error
The second four bits specify data stored to the lower half of the second bank
when diag5 > 0. Note that in order to store focus data, diag1 must be set to
0 as well.
Storing Data
0 focus data (stored in swaths)
16 write laser (M2) sensor
32 BP0 sensor
48 BP1 sensor
64 nosepiece sensor
80 diode temperature
96 ambient temperature
112 case temperature
128 humidity
144 LV temperature
160 focus sum
176 focus difference
192 diagnostic port 0 output
208 diagnostic port 1 output
224 focus lens position
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