Pioneer MJ-L5 Service Manual page 71

• Rise-up sequence after AC power is applied of MD microcomputer
Reset process
end
∗
The power supply of MD mechanism is not being supplied
to MD in the system power off condition.
Therefore, nothing goes specially under the power off
condition after the AC supplied.
Reset
Initialize the
internal data
Bus data
transmission
No
10 msec. ?
Yes
Test mode / destination
port check
Yes
No
System power on ?
Yes
Go to power
on process
Release the hardware reset.
Set the port status.
System bus communication : Transfer the system power off request.
The waiting time until power supply rise-up
and becomes stable.
TEST (pin 15), TEST_U (pin 16)
J/EX (pin 8), KU/EX (pin 17)
Did you receive the system power on or DEMO mode on
information from the CD receiver with the system bus
communication.
MJ-L5, SP-L5
71