PDP-4280HD
42
1
2
3
4
1
2
3
4
C
D
F
A
B
E
5.1.2 POWER ON SEQUENCE
1
: The remote control (or KEY) signal is input to the IF microcomputer.
2
: The IF microcomputer sends the operation data of the remote control unit (or KEY) to the main microcomputer.
3
: The main microcomputer issues a startup command (PON) to the MOD microcomputer.
4
: The relay is controlled with logical OR interpretation of control signals by the main microcomputer and
module (MOD) microcomputer.
MOD
Microcomputer
IC3151
MAIN
Microcomputer
IC8401
IF
Microcomputer
IC8301
Power MOD
RELAY Control
REM
Inv. Amp
Q9731
REM
infrared
receiver
Side Keys
SR OUT Jack
JA9404
4
1
2
1
SR_OUT
KEY_1
KEY_2
TXD_MD
RXD_MD
REQ_MD
SR_IN
TXD_IF
RXD_IF
CE_IF
REQ_IF
BUSY_IF
Inv. Amp
Q8302
Inv. Amp
Q4105
3
Summary of Contents for PDP-4280HD
Page 10: ...PDP 4280HD 10 1 2 3 4 1 2 3 4 C D F A B E 2 2 SPECIFICATIONS Dimensions ...
Page 11: ...PDP 4280HD 11 5 6 7 8 5 6 7 8 C D F A B E 2 3 PANEL FACILITIES Front Section ...
Page 12: ...PDP 4280HD 12 1 2 3 4 1 2 3 4 C D F A B E Rear Section ...
Page 13: ...PDP 4280HD 13 5 6 7 8 5 6 7 8 C D F A B E Remote Control Unit ...
Page 19: ...PDP 4280HD 19 5 6 7 8 5 6 7 8 C D F A B E ...
Page 20: ...PDP 4280HD 20 1 2 3 4 1 2 3 4 C D F A B E 4 BLOCK DIAGRAM 4 1 OVERALL WIRING DIAGRAM 1 2 ...
Page 22: ...PDP 4280HD 22 1 2 3 4 1 2 3 4 C D F A B E 4 2 OVERALL WIRING DIAGRAM 2 2 ...
Page 23: ...PDP 4280HD 23 5 6 7 8 5 6 7 8 C D F A B E ...
Page 35: ...PDP 4280HD 35 5 6 7 8 5 6 7 8 C D F A B E ...
Page 168: ...PDP 4280HD 168 1 2 3 4 1 2 3 4 C D F A B E 10 6 PANEL CHASSIS SECTION ...
Page 172: ...PDP 4280HD 172 1 2 3 4 1 2 3 4 C D F A B E 10 8 PDP SERVICE ASSY 428 Exterior Section ...