Troubleshooting Guide; No Power - Technics SL-1500C Owner's Manual

5 Troubleshooting Guide

5.1.

No Power

AC power supply cord
AC power supply cord
Replace AC CORD.
AC INLET
P1730
Pin 3
(GND)
No power
Is NO
plugged in?
YES
NO
Is
damaged?
YES
SMPS PCB
F1700
Pin 5
(+24V)
SMPS PCB
Plug the cord in firmly.
Is AC INLET
part damaged?
YES
Replace SMPS PCB.
Botton operating
Is the AC power
presented at
AC INLET?
YES
Is fuse F1700
on SMPS PCB
blown?
YES
Replace SMPS PCB.
correct voltage presented
at Pin 5 (+24V) and 3 (GND) of
connector P1730 on SMPS PCB?
Normal : +22.8 to +25.2 V
9
NO
NO
(No clicking,
Not return back, etc.)
Is Power
normally?
YES
Replace OPERATION UNIT
or PANEL PCB.
NO
Replace AC CORD.
NO
Is the
YES
Go to next page. Replace SMPS PCB.
NO