Marantz User Manuals

Marantz SR & Cinema Series AV Receivers (2020–2025)

• No Power / Standby Light Off: Unplug power cord 60 sec → replug; try different outlet; check rear power switch.
• No Sound / “Check SPKR Cable”: Run Setup → Speakers → Audyssey → re-run calibration; ensure speaker wires not shorted.
• HDMI No Signal / 4K/8K Issues: Use Premium High Speed HDMI cables; Setup → Video → HDMI Setup → set 8K Enhanced/4K Enhanced ON.
• HEOS App Not Finding Device: Connect unit via Ethernet first; disable router IGMP snooping; restart router & receiver.
• Remote Not Working: Replace batteries; re-pair IR remote (hold “SOUND MODE” + “9” + “ENTER” for 5 sec).

Marantz Stereo Amplifiers & Integrated (PM, MODEL Series)

• Protection Mode / “PROTECT” Blinking: Disconnect all speakers → power on; reconnect one by one to find short.
• Phono Input Humming: Use grounded turntable; try MM/MC switch; keep power cables away from phono cables.
• Unit Overheating: Ensure 20 cm clearance above; clean vents; use 4–8 Ω speakers only.

Marantz CD/SACD & Network Players

• Disc Not Reading: Clean disc; use lens cleaner disc; update firmware via USB/Ethernet.
• No Internet Radio / Spotify: Setup → Network → Connection → re-enter Wi-Fi password; restart router.

Note: Always refer to your exact model manual for detailed steps. If the problem continues, contact Marantz support at marantz.com/support.