Crown OC-150A - Page 28

LIGHTS
8VAC
NOTES:
Schematic MI-263 applies only to PC board #9606
Starts
SN 1301
Early units
R27 was 4.7K and R18 was 56M.
All capacitors in micro-farads, all resistors in ohms unlessotherwise
noted.
R28 is meter calibration.
Never attempt to adjust
R23, the drift adjust, unless a 4-digit DVM is
available.
PC board shown from foil side.
OC-I 50A
METER AMPLIFIER
MI-263