Pioneer KRP-500P - [2] POWER ON SEQUENCE

36
KRP-500P
1
2 3 4
A
B
C
D
E
F
1
2 3 4
1 : The KEY signal is input to the IF microcomputer.
1’ : The remote control signal is input to the IF microcomputer and Panel main microcomputer.
2 : The IF microcomputer sends the operation data of the remote control unit key to the main microcomputer.
3 :
The main microcomputer issues a startup command (PON) to the panel main microcomputer through DP Tx and DP Rx.
4 : The panel main microcomputer issues a startup command (PON) to the MOD microcomputer.
5 : The MOD microcomputer controls a MOD relay of the POWER SUPPLY Unit (Display section), then the power is
turned on.
5’ :
The main microcomputer controls a MOD relay of the POWER SUPPLY Unit (Media Receiver section), then
the power is turned on.
[2] POWER ON SEQUENCE
MAIN
Microcomputer
IC7003
IF
Microcomputer
IC6811
Power MOD
RELAY Control
REM
Inv. Amp
Q4103
REM
infrared
receiver
Keys
Power MOD
RELAY Control
Panel Main
Microcomputer
IC7001
MOD
Microcomputer
IC3601
SR OUT Jack
JA7503
5
1
2
1
1
SR_OUT
KEY_1
KEY_2
TXD_MD
RXD_MD
SR_IN
REM_IN
TXD_IF
RXD_IF
CLK_IF
REQ_IF
CE_IF
BUSY_IF
Inv. Amp
Q6812
Inv. Amp
Q6819
Display port Tx
IC7602
Display section
Media Receiver
section
TXD_DP
RXD_DP
REQ_MD
TXD_MD
RXD_MD
Display port Rx
IC5001
AUX_CH_P
AUX_CH_N
3
4
’
’
5
’