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December 2002 TOSHIBA TEC A - 9 e-STUDIO160/200/250 APPENDIX
2. DC Output Circuit
This circuit converts the AC voltage input from the inlet to each DC voltage (+24V, +12V, -12V, +5V,
+3.3V) and delivers it to each part of the machine. Turning on the main switch causes the supply of all
DC voltages to begin.
Each DC voltage is supplied or cut off when the Power Save mode is activated or the following covers are
opened or closed as shown in the table below.
: Output - : Cut off
Output Protection
An overcurrent and an overvoltage protective circuit are configured for each DC voltage output. If the
output is shorted for some reason or an abnormal condition occurs in a circuit, these circuits prevent
overcurrent and overvoltage from flowing through the entire circuitry of this machine.
DC Voltage Voltage In Power Save mode Front Cover Side Cover
Value (V) (PWS signal = Low) = Open = Open
24VSW +24 - - -
24VFU2 +24 -
24VFU1 +24 -
24V +24 -
12V +12 -
-12V -12 -
5VPS +5
5V +5 -
3.3V +3.3 -