Daewoo DWP-28W2ZLF - Manual (Page 66)

Appendix Service manual WP-795
- 39 -
- When the DC supply voltage reaches (2.4V +0.6V ) =3.0V, Q510 starts conducting but as the Q511
base-emitter voltage is the same as the collector-emitter voltage of the saturated Q510, Q511 switches
off and no voltage reaches I501 pin 60.
- If the DC supply voltage decreases below 3 V, Q510 switches off immediately. Q511 starts conducting,
pulling I501 pin 60 high.
At the same time, it discharges the reset capacitor C501. Discharging this capacitor is necessary to
garantee a defined reset pulse duration.
2-9-2 TV normal run and stand-by mode operations
Depending on remote control commands, I501 microcontroller part pin 63 (power) is set to:
- high for normal run mode
- low for stand-by mode
2-9-2-1 TV on normal run mode
2-9-2-1-1 I501 microcontroller part pin 63 (power) effect
I501 microcontroller part pin 63 (power) is connected to the following circuit: