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Operational Flow Chart - Pioneer GM-8537ZT/WL Service Manual

Pioneer toyota/ lexus ls430 gm-8537zt/wl; gm-8537zt-91/wl car audio system power amplifier
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1

7.3.2 OPERATIONAL FLOW CHART

A
Reset Start---OFF ---Power ON
START
| Hard ware reset cancel
<<JUDGMENT>>
Test program check(Unit checker)
- Pin 27 HI/LOW input
Pin 27 HI input
B
Unit checker program
Pin 17 HI input
or
Pin 16 HI input
Error(Communication error)
| Forcibly OFF
C
D
E
F
48
1
2
Pin 27 LOW input
<<JUDGMENT>>
Back up, ACC confirmation
- Pin 17 ACC/Pin 16 Back up
Pin 17 LOW input and Pin 16 LOW input
• ACC/Back up ON
Main loop
<<JUDGMENT>>
Bus communication Normal/Error
Normal(Main unit communication normal)
<<JUDGMENT>>
System ON/OFF
OFF
- OFF status
=System ON waiting
• Power ON(Pin 66 H)
• Mute ON(Pin 40 H)
• BEEP output available
<<JUDGMENT>>
ACC/Back up ON/OFF
ACC ON/Back up ON
Main loop
GM-8537ZT/WL
2
3
Pin 17 LOW input
and
Pin 16 LOW input
Pin 17 HI input
or
Pin 16 HI input
Microcomputer oscillation stop
(Electronic power save)
ON
- ON status
=System OFF waiting
• Power ON(Pin 66 H)
• Mute OFF(Pin 40 L)
• BEEP output available
<<JUDGMENT>>
DSP error confirmation
• communication error:Serial IF
Normal operation
3
4
DSP error
Error retry
• DSP reset(Pin 67)
| About 1 second
4

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Gm-8537zt-91/wl