Sanyo VHR-H792E - System & Front Panel Circuit Troubleshooting

YES
YES
YES
Does 5.3V appear at
RS501.
Check the Power.
Check the Drum Motor
Signal.
Do Take-up reel pulses
appear at the base of
Q514?
Replace the Take-Up Reel
Photocoupler in the
Deck(RS501).
Auto stop.
Does SW30 waveform
appear at IC501 Pin 105?
Do Take-up reel pulses
appear at IC501 Pin 49?
Change IC501.
A.
NO
NO
NO
NO
YES
3. System & Front Panel Circuit
3-10