Technics SL-1500C Manual page 17

Service information – Service Mode & Adjustment
To enter the service mode
1. Press [Power] while pressing [Start/Stop].
2. Keep pressing [Start/Stop] and press [Speed select [33]→[33]→
[45]→[45]→[33]→[33]].
3. [45] LED blinks when entered the service mode properly.
4. The number of [45] LED blinking shows the software
version. (First shipment version: 3 blinks)
As the number of software version increases, the number of LED
blinking increases by one.
5. To exit the service mode, press [Power].
DC motor adjustment
*This adjustment is required when replacing the DC motor and/or
Main PCB.
1. Enter the service mode.
2. Mount the turntable and turntable mat.
3. Keep pressing [Start/Stop] for over 3 seconds.
The turntable rotates, stops and rotates again.
[33] LED blinks for approx. 1 minute during adjustment.
The turntable stops and [33] LED turns on when adjustment is completed.
Auto lifter adjustment
*This adjustment is required when replacing the tone arm unit, Main PCB, and
DC motor including when screws of the DC motor are unscrewed.
1. Enter the service mode.
2. Keep pressing [45] for more than 3 seconds.
3. [45] LED blinks at 1 sec. interval during Auto lifter adjustment mode.
4. Move the tone arm from outside to inside.
When the tone arm reaches a detection point of the record end,
[33] LED turns on.
[33] LED ON
[33] LED OFF
Measure the distance between the lateral face of spindle and the stylus tip
when reached at detection point([33] LED just turns on).
Technical Information for Hi‐Fi Audio System
17