Pioneer CT-W801R Service Manual page 40

CT-W801R, CT-W851R, CT-W701R
9.3 Power On Initializing
1. CPU Reset
When the power is turned on, the RESET terminal (Pin 39) of the
CPU synchronizes with the rising of the CPU SV. The reset is
released, and processing starts from the head of the program. As
each CPU port goes into the ''high impedance" condition during
the time from power on to reset release, it is necessary to set to
"H" or''L" with external parts.
(a) Port Initializing
Sets the amplifier system port into the ''non-active" condition.
START
Mechanism STOP?
(MODE SW OFF?)
Motor, Solenoid
1000 msec ON
Motor, Solenoid OFF
Mechanism STOP?
(MODE SW OFF?)
46
(b) Mechanism Initializing
The initializing of the mechanism is performed as shown in the
following figure in the order of 1 mechanism > 2 mechanism by
setting both mechanisms into the ''STOP" condition.
As the amplifier system circuit is unstable immediately after the
power is tumed on, key inputs (including the remote control unit)
will not be accepted for about 4 seconds.
If the mechanism does not return to the ''STOP" condition, it is
determined as ''error", and mechanism initializing is performed
once again. If ''error" occurs the second time, mechanism
operations are stopped and ''emergency" is set.
Motor
500 msec ON
Mechanism STOP?
(MODE SW OFF?)
ERROR