Sequence - Pioneer PDP-R05U Service Manual

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7.2.2 SEQUENCE

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R05 series Power-on sequence
PDP
MR
TE
L 13942296513
1 : Remote controller signal (or, KEY signal) is input into IF microcomputer.
2 : IF microcomputer supplies the power supply to Main microcomputer and MOD microcomputer.
3 : IF microcomputer communicates the operation information of Remote controller (or KEY) to Main microcomputer.
4 : Main microcomputer sends in the activation order to MOD microcomputer.
5 : MOD microcomputer controls the relay of PDP power supply MOD, and activate the power supply of PDP side.
6 : Main microcomputer controls the relay of MR power supply MOD, and activate the power supply of MR side.
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REM Side
optical KEY
receiver
BUFF BUFF
REM_B KEY_B
BUFF BUFF
IC9301 IC9301
SR_IN
1
IF_micro-
1
computer
IC8702
SR circuit
Q9451, Q9452,
Q9455, Q9455
REM_B Comment in the balloon is the reference signal name.
Please confirm the wiring number of PDP side with the service manual of PDP side.
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MOD
micro-
computer
BUFF
STB_MT
TXD_IF
ACTIVE
RXD_IF
Inverter
CE_IF
Q8702
REQ_IF
BUSY_IF
Q Q
3 6 7 1 3
PM_SW
2
IC8507
main
3
microcomputer
IC7207
.
PDP-R05U
7
9 4 2 8
Power
supply MOD
STB control
Power
5
supply MOD
RELAY control
BUFF
MTXD
MRXD
REQ
BUFF
IC9302
1 5 4 0 5 8 2 9 9 4
V+3COM
Power
6
supply MOD
RELAY control
m
co
7
8
9 9
A
B
C
2 8 9 9
D
E
F
195
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