Power Supply Sequence - Toshiba e-STUDIO520 Service Manual

17.6 Power Supply Sequence

AC input
+3.3VA
( Linked with main switch )
+5.1VA, B
( Linked with main switch )
PWR-DN
+12VA, +12VB
( Linked with main switch )
PWR-EN
+3.3VB
( Linked with main switch )
+5.1VC to +5.1VG
( Linked with main switch )
+5.1VH ( Linked with door switch )
+12VC to +12VF ( Linked with main switch )
+24VA to +24VG ( Linked with main switch )
+36VA to +36VD ( Linked with door switch )
e-STUDIO520/600/720/850 POWER SUPPLY UNIT
ON
700ms or lower
0ms to 200ms
3.2V or higher
4.95V or higher
10ms to 120ms
11.4V or higher
0ms to 20ms
200ms or
lower
200ms or
lower
0ms or
higher
200ms or
lower
0ms to 20ms
10ms or
lower
20ms or
higher
5ms or
higher
0ms or
higher
3.2V or higher
4.95V or higher
Lower limit of each
rated voltage or higher
+4.95V ( R.V. +5.1V )
+11.4V ( R.V. +12V )
+21.6V ( R.V. +24V )
+32.4V ( R.V. +36V )
Fig.17-2
17 - 8
OFF
-200ms
3.2V or higher
4.95V or higher
10ms or 20ms or 50ms or
higher higher higher
0ms to
200ms
5ms or
higher
11.4V or
higher
0ms or 0ms or
higher higher
March 2005 © TOSHIBA TEC
200ms