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13 Cat. No. 249 Contains a semi-regulated power supply with
Power Supply Module nominal outputs of +15V, -15V, and 24V. Also
contains the bypass amplifier, gain trimmer, and a
+12V bypass power supply.
14 Cat. No. 259 Contains two power transformers (main and
Transformer Module bypass) that convert mains voltage AC to low-
voltage AC. The selector switch for main voltages
is accessible through the backplane. It permits a
choice of the following nominal mains voltages:
100, 120, 140, 200, 220, and 240V.
As a safety feature in many
countries, the Cat. No. 249
module is held in place by a
retainer bracket mounted to the
Cat. No. 259 module. To
withdraw the Cat. No. 249 it is
first necessary to remove the
Cat. No. 259. Do this by
disconnecticng the power cord
from the Cat. No. 259 and then
removing the two screws
indicated by arrows. Remove
the Cat. No. 259 followed by
the Cat. No. 249.