Filter
Top Products
Main unit’s key Check point Voltage (ON) Voltage (OFF)
PLAY IC501 100pin 0V 2.2V
STOP IC501 100pin 1.76V 2.2V
FOW IC501 99pin 0.66V 2.2V
REV IC501 99pin 0.88V 2.2V
HOLD OFF IC501 42pin 0V 2.2V
REC IC501 100pin 0.22V 2.2V
VOL+ IC501 99pin 1.1V 2.2V
VOL- IC501 99pin 1.32V 2.2V
MARK MODE IC501 99pin 0V 2.2V
MODE IC501 99pin 0.22V 2.2V
EQ IC501 99pin 0.44V 2.2V
7. “Checking the main unit’s key” is finished. Remove the battery
when you exit from this mode.
Note:
Refer to “12. Printed Circuit Board Diagram” for the test points.
7. Troubleshooting Guide
7.1. Overall Flow Chart
7.1.1. Confirmation of main unit and remote control