Explanation; Operational Flow Chart; Electronic Volume Refresh - Pioneer RX300 Service Manual

7.3 EXPLANATION

7.3.1 OPERATIONAL FLOW CHART

Reset Start---OFF ---Power ON
| Hard ware reset cancel
<<JUDGMENT>>
Test program check(Unit checker)
- TESTIN HI/LOW input
Unit checker program
ASENS HI input
or
BSENS HI input
- Electronic volume refresh (Normal)
Electronic VR IF
START
TESTIN LOW input
TESTIN HI input
<<JUDGMENT>>
Back up, ACC confirmation
- ASENS/BSENS
Error(Communication error)
| Forcibly OFF
<<JUDGMENT>>
Bus communication Normal/Error
VDT
VCK1
VST
GM-8706ZT,8706ZT-91,8306ZT,8306ZT-91
ASENS HI input
or
BSENS HI input
ASENS LOW input and BSENS LOW input
• ACC/Back up ON
Main loop
Normal(Main unit communication normal)
<<JUDGMENT>>
System ON/OFF
OFF
- OFF status
=System ON waiting
• Power OFF(SYSPW)
• Mute ON(MUTE)
<<JUDGMENT>>
ACC/Back up ON/OFF
ACC ON/Back up ON
Main loop
About 500mS interval
ASENS LOW input
and
BSENS LOW input
Micon oscillation stop
(Electronic power save)
ON
- ON status
=System OFF waiting
• Power ON(SYSPW)
• Mute ON(MUTE)
• BEEP output available
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