No Sound (Large Humming Noise) - Technics SL-1200MK7PP Service Manual

5.3.

No Sound (Large humming noise)

No sound (Large humming noise)
PHONO cable
and PHONO earth Lead
correctly connected?
PHONO cable or
PHONO earth Lead
Replace the damaged cable.
correctly attached?
in the head shell pin?
Replace the Head shell.
Are the
NO
YES
Is the
NO
damaged?
YES
Is
NO
the cartridge
YES
Is there any
NO
abnormality
YES
Connect the PHONO cable and
PHONO earth Lead correctly.
Is the
PHONO output
terminal or PHONO earth
terminal damaged?
YES
Replace PHONO OUT PCB.
Attach the cartridge correctly.
Replace TONEARM ALL ASS'Y.
12
NO