leg5840 Posted July 19, 2023 Posted July 19, 2023 Problem: If you press the ON button of MPD/MPCD in advance while the power is not applied, the MPD/MPCD turns on the moment the power is applied. principle of operation: If the power to turn on the MPD/MPCD is not applied (any IDG), it is normal that the MPD/MPCD does not turn on even if you press the ON button of the MPD/MPCD. And no electrical signal is generated. Since the above-mentioned actions cannot generate and transmit electrical signals, they must not affect the operation of the switch after power is applied. However, there is a problem that the power of MPD/MPCD is turned on as soon as the power to turn on MPD/MPCD is applied while pressing the ON button of MPD/MPCD in advance (when the on button is simply pressed once rather than pressed and held). 3
dorianR666 Posted July 19, 2023 Posted July 19, 2023 (edited) i have noticed this too and agree. its a button, not a switch, the display cant know it was pressed if the display was unpowered. Edited July 19, 2023 by dorianR666 1 1 CPU: AMD Ryzen 5 1600X GPU: AMD RX 580
leg5840 Posted July 19, 2023 Author Posted July 19, 2023 13 minutes ago, dorianR666 said: i have noticed this too and agree. its a button, not a switch, the display cant know it was pressed if the display was unpowered. Thank you. Clearly, it is a button, not a switch.
jaylw314 Posted July 19, 2023 Posted July 19, 2023 (edited) Is anybody SURE the power switch is supposed to be a momentary two-way switch? Could it possibly be a two-position rocker switch that has not been animated yet? I don't know for sure, but it's described as a 'two position rocker switch', where the brightness and contrast switches are described as 'two-position, spring-loaded-to-center rocker switches'. That doesn't prove, but does strongly suggest the power switch is a OFF-ON switch, while the other switches are (ON)-OFF-(ON) switches, where the parentheses mean momentary or spring-centered. Edited July 19, 2023 by jaylw314
leg5840 Posted July 19, 2023 Author Posted July 19, 2023 5 hours ago, jaylw314 said: Is anybody SURE the power switch is supposed to be a momentary two-way switch? Could it possibly be a two-position rocker switch that has not been animated yet? I don't know for sure, but it's described as a 'two position rocker switch', where the brightness and contrast switches are described as 'two-position, spring-loaded-to-center rocker switches'. That doesn't prove, but does strongly suggest the power switch is a OFF-ON switch, while the other switches are (ON)-OFF-(ON) switches, where the parentheses mean momentary or spring-centered. As you said, the brightness/contrast switch is a two-position, spring-loaded-to-center rocker switch. The power switch is a two position rocker switch. I think I made some mistakes to help understand. To be precise, it's not a button. But it works like a power 'button'.
jaylw314 Posted July 19, 2023 Posted July 19, 2023 (edited) 6 minutes ago, leg5840 said: As you said, the brightness/contrast switch is a two-position, spring-loaded-to-center rocker switch. The power switch is a two position rocker switch. I think I made some mistakes to help understand. To be precise, it's not a button. But it works like a power 'button'. To clarify, I suspect the power switch is a switch that flips and stays in the ON position when you press the top, then it flips and stays in the OFF position when you press the bottom. It does not have a center position. Just like the rocker light switches you can put on your wall--if you turn it on during a power failure, the lights will come back on when the power comes on. The other two switches are 3-position switches, with the top and bottom momentary (which is what you are describing). Edited July 19, 2023 by jaylw314 1
leg5840 Posted July 19, 2023 Author Posted July 19, 2023 32 minutes ago, jaylw314 said: To clarify, I suspect the power switch is a switch that flips and stays in the ON position when you press the top, then it flips and stays in the OFF position when you press the bottom. It does not have a center position. Just like the rocker light switches you can put on your wall--if you turn it on during a power failure, the lights will come back on when the power comes on. The other two switches are 3-position switches, with the top and bottom momentary (which is what you are describing). I read the explanation about T.O, but I don't understand it. T.O clearly states that it is a two-position rocker switch. As you said, a two-position rocker switch is correct. and If it is a two-position rocker switch, it is correct that the power is turned on when it is pressed before the power is turned on. However, in reality, MPD/MPCD does not turn on, as stated at the top of the thread. I actually turn the MPD/MPCD off and on every day while doing maintenance work. I was bored so I tried going back and forth between ON and OFF. At least once, after pressing ON, there must have been times when the power was applied in that state. But what is certain is that the act of pressing the switch before turning on the power has never caused the MPD/MPCD to turn on. 1
KlarSnow Posted July 19, 2023 Posted July 19, 2023 6 hours ago, jaylw314 said: Is anybody SURE the power switch is supposed to be a momentary two-way switch? Could it possibly be a two-position rocker switch that has not been animated yet? I don't know for sure, but it's described as a 'two position rocker switch', where the brightness and contrast switches are described as 'two-position, spring-loaded-to-center rocker switches'. That doesn't prove, but does strongly suggest the power switch is a OFF-ON switch, while the other switches are (ON)-OFF-(ON) switches, where the parentheses mean momentary or spring-centered. It is a momentary on/off toggle. The MPD/MPCD does not power on on its own if you push that button before power is on the jet. The original post is correct the current MPD/MPCD on/off switch behavior is incorrect. 1 2
jaylw314 Posted July 19, 2023 Posted July 19, 2023 (edited) 1 hour ago, KlarSnow said: It is a momentary on/off toggle. The MPD/MPCD does not power on on its own if you push that button before power is on the jet. The original post is correct the current MPD/MPCD on/off switch behavior is incorrect. Cool, thanks for clarifying that, guys. So even though the power switch is called a "two-position rocker switch", it is identical to the "two-position, spring-loaded-to-center switches" like the brightness and contrast switch. That's brilliant technical documentation! Edited July 19, 2023 by jaylw314 1
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