Cassette Deck · Pioneer · TX-600
Diagnosis: Phono Doesn't Work
The turntable input is silent, weak, noisy, or distorted.
Safe first checks
- Confirm the turntable is connected to PHONO, not an auxiliary input.
- Verify that the turntable ground wire is connected to the ground terminal.
- Test another source on AUX to confirm the amplifier section works.
- Check that the cartridge leads are secure and the stylus is not damaged.
Bench Technician Steps
This is the model of work a qualified electronics technician follows using the exact service manual and suitable test equipment. It is not a do-it-yourself instruction to work on energized equipment.
- Confirm the cartridge type and expected signal level before evaluating the phono stage.
- Trace the phono input, grounding, selector, and preamplifier path with the service manual; compare channels where applicable.
- Avoid substituting a generic cartridge or stylus as a diagnosis without confirming electrical and mechanical compatibility.