General Information; Power On Sequence - Pioneer PDP-507XD Service Manual

1

10. GENERAL INFORMATION

10.1 POWER ON SEQUENCE

A
REM
infrared
receiver
B
BUFF
C
Q4005
BUFF
D
Q8303
SR OUT Jack
JA9004
1 : The remote control (or KEY) signal is input to the IF microcomputer.
2 : The IF microcomputer sends the operation data to the main microcomputer.
E
3 : The main microcomputer issues a startup command to the MOD microcomputer.
4 : The MOD microcomputer controls the relay of the power MOD of the PDP to startup the power of the PDP.
F
176
1
2
Side Keys
REM
KEY_1
KEY_2
1
SR_IN IF_UCOM
IC8301
BUFF
1
TXD_IF
RXD_IF
CE_IF
REQ_IF
BUSY_IF
SR_OUT
2
3
MOD
Microcomputer
BUFF
MTXD_MD
MRXD_MD
REQ_MD
3
MAIN_UCOM
2
IC8401
PDP-507XD
3
4
Power MOD
4
RELAY Control
4