Pioneer PRO-1410HD Field Service And Training Manual page 11

1. AC line attached to Power Supply.
2. Power Supply outputs a Power Mute voltage at +4.8 from Connector PM pin 5
(POMUTE). The Power Supply also outputs a +7 volt supply to the Main Microprocessor
at Connector PM pin 1 (M+7).
3. The +7 volt supply now on the Main PCB goes to the RS232 PCB, Power Switch PCB and
IC9503 the +5 volt regulator. Additionally the +7 volt supply returns back to the Power
Supply as one of the Power Start Up signals.
4. The +5 volt regulator (IC9503) outputs to the RS232 and Power Switch PCB's. At this
time the Main Microprocessor sets the state to Standby and the front panel LED lights
Red.
5. From Standby pressing the Power button will send a +5 volt signal to the Main
Microprocessor from the Power Switch PCB Connector PW pin 2 (POIN).
6. The Main Microprocessor outputs the Power On +5 volt signal to the Power Supply from
Connector PM pin 3 (POWER). At this time the Power Relay engages.
7. The Power Supply upon receiving the Power On Signal supplies all other secondary
supply voltages.
8. After secondary supply voltages come up the power supplies for VS (170) and VD (65)
turn on.
9. NOTE: Panel Alarm Input Line can shutdown the Power Supply (High = Normal).
Normal Power On Operation
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42 And 61 Inch Models