LG RD-JT30 Service Manual page 136

4.. JT31 Lamp on Sequence
PWRGOOD Low High
RESETZ
LAMPEN
LAMPLITZ High Low
LAMPLIT Low High
5. JT31 Normal Lamp off Sequence
RESETZ
LAMPEN
LAMPLIT High Low
PWRGOOD High Low
6. Power
6.1. Block Diagram
Line
EMI
Input
filter
Signal Voltage Change
Low High
Low High
Signal Voltage Change
High Low
High Low
Bridge
Rectifier
Description
After the power key pressed
3 second continuously, the
POWERON signal will
activate.
DDP1000 will begin
initialization.
Lamp lights up.
Lamp on indication for
DDP1000
Lamp on indication for
PW166
Description
DDP1000 goes into a reset
state.
Lamp turn off.
Indicate lamp off.
DMD is parked