2-47
2.1.17
Power ON/OFF circuit
2.1.17.1 Power
ON
The conditions to make power ON are categorized to the following three cases:
The conditions and conditional sequences are specified below.
(Condition 1..... ON with the primary-side switch.
Condition .......JP9 is short-circuited.)
• The primary-side Power switch is turned ON.
• A power supply of +5VSB is supplied.
• The AC_ON_SB signal is turned to the high level.
• Potential at Pin 8 of HCT74 (IC48) is turned low.
• Since JP9 is short-circuited, the PS_ON# signal is turned to the low level.
• The secondary side output of the power supply is turned ON.
(Condition 2..... ON with the secondary-side power switch.
Condition .......Standby state with the primary side turned ON.)
• The primary-side Power switch is turned ON and the standby state is assumed. (AC_ON_SB at high level)
• The secondary-side Power switch is turned ON and the PWR_SW# signal is turned low.
• Potential at Pin 3 of MB3771 (IC47) is turned high and the PS_ON# signal is turned low.
• The secondary side output of the power supply is turned ON.
(Condition 3..... ON through the LAN.
Condition .......Standby state with the primary side turned ON.)
• The primary-side Power switch is turned ON and the standby state is assumed. (AC_ON_SB at high level)
• The command for Power ON is output through the LAN and the LAN_WAKEUP signal is turned high.
• Potential at Pin 6 of HTC74 (IC37) is turned low and the PS_ON# signal is turned low.
• The secondary side output of the power supply is turned ON.
Содержание JS-170FR Series
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Страница 145: ...4 2 MB PCB 4 2 1 MB PCB Schematic Diagram 4 17 ...
Страница 146: ...4 18 4 2 2 MB PCB Parts Location ...
Страница 148: ...4 3 Peripheral PCB 4 3 1 Peripheral PCB Schematic Diagram 4 20 ...
Страница 149: ...4 21 4 3 2 Peripheral PCB Parts Location ...
Страница 152: ...5 2 Main PCB 75 Peripherals ...
Страница 153: ...5 3 Power Supply Peripherals ...
Страница 154: ...5 4 Customer Display Peripherals ...
Страница 155: ...5 5 LCD Peripherals ...
Страница 156: ...5 6 Inverter PCB Peripherals ...
Страница 161: ...Printed in Japan ...