PDP-436SXE
137
5
6
7
8
5
6
7
8
C
D
F
A
B
E
7.2.3 POWER ON SEQUENCE
STB3.3V
REM
infrared
receiver
Buff
Buff
Keys on the
front panel
IF_UCOM
IC5002
MAIN_UCOM
IC5206
MOD
Microcomputer
PW_SW
IC4212
ACTIVE
KEY_AD2
POWER ON SEQUENCE
TXD_IF
RXD_IF
CE_IF
REQ_IF
BUSY_IF
REM_B
SR_IN
TXD_MD
RXD_MD
REQ_MD
3.3V_UCOM
Power Supply
Unit
RELAY Control
1
1
2
3
4
5
1
: The signal from the remote control unit (or a key signal) is input to the IF microcomputer.
2
: The IF microcomputer supplies the power to the main microcomputer and MOD microcomputer.
3
: The IF microcomputer transmits operation data from the remote control unit (or keys) to the main microcomputer.
4
: The main microcomputer issues a startup command to the MOD microcomputer.
5
: The MOD microcomputer controls the relay of the PDP Power supply unit and starts the power-on sequence of the PDP.