Pioneer XC-L5 Service Manual page 48

XC-L5
• Rise-up sequence after AC supplied to CD receiver microprocessor
Initialize the
internal data
Destination
check
TEST mode
check
DEMO mode
permission ?
Standby state
48
Reset
Release the hardware reset.
Judge with destination port (pin 58).
TESTU port (pin 56) L : TEST mode for unit checker
TEST port (pin 57)
Yes
∗
DEMO mode
No
start
Displey
start
Bus data
transmission
DEMO display
H : KU , L : MY
L : TEST mode
∗
Judge the DEMO mode permission
Initial setting is DEMO mode permission.
Backup the release state of DEMO mode when user does release
operation of DEMO mode. Judge it with the backup data.
• How to release the DEMO mode
In the DEMO mode, release the DEMO mode when you press
STANDBY/ON key while pressing STOP key of the CD receiver.
Repeat the same operation at the time of POWER OFF when you
want to permit the DEMO mode again.
Start the display data transfer to FL driver.
Microprocessor ports
FLCE (pin 25)
FLDATA (pin 23)
FLCLOCK (pin 24)
System bus communication transfer
DEMO ON.............................. During DEMO ON
System power OFF end ............ POWER OFF end
Function information (CD) ......... Function CD
CD information CD STOP......... CD is STOP state