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XR-1X
PFC output voltage adjustment when replacing parts in the power supply unit
When parts located on the block A, B, or C in the power supply unit are replaced, readjust PFC output voltage.
[Procedure]
1. Set the volume (VR711) at the center position.
2. Turn on the power, and the lamp lights up.
3. Adjust the volume (VR711) so that voltage of C714 becomes 372 V ± 3 V.
<Notes>
1. The volume is on the primary side. Be careful to avoid electric shock.
2. Do not adjust the volume on HIC21 (small PWB).
3. When the following parts need to be replaced, renew the whole power supply PWB unit.
L711 Transformer
L713 Choke coil, 70µH
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