LG EC970W - System & Front Panel Circuit; Auto stop

3-10
YES
YES
Replace the Take-Up Reel
Photocoupler on Main
PWB Board(RS501).
Check the Power.
Check the Drum Motor
Signal.
Auto stop.
Does SW30 waveform
appear at IC501 Pin 18?
Do Take-up reel pulses
appear at IC501 Pin 80?
Change IC501.
A.
NO
NO
NO
YES
3. System & Front Panel Circuit
Does 5.3V appear at
RS501.