THEORY GUIDE Power Distribution
10DEC05
TG4825-1
Page
108 of 120
UNINTERRUPTIBLE
POWER SUPPLY
UPS1
Receives 120 V AC from the TRANSFORMER T1 and sends 120 V
AC to the POWER SUPPLY PS1, the ERASE AY, and the INTERNAL
PC.
DC POWER
SUPPLY PS1
This supply has +12 V DC and +/-24 V DC outputs only. It receives
120 V AC from the UNINTERRUPTIBLE POWER SUPPLY UPS1 and
supplies all the BOARDS and the TOUCH SCREEN MONITOR. The
ERASE ASSEMBLY does not receive power from the POWER
SUPPLY PS1.
ERASE LAMP
RELAY K1
Provides 120 V AC to the ERASE LAMPS.
Supply Description
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