Manley Labs MM/MC GRAMOPHONE CARTRIDGE PREAMPLIFIER Troubleshooting, Symptom, Possible Cause

TROUBLESHOOTING

The STEELHEAD’s system architecture is designed with a variety of features so as to allow flexibility in accommodating as many cartridges and as much downstream gear as possible. Access to these capabilities rest on the assumption that all STEELHEAD systems are functioning properly. If trouble is encountered please review the following short list of symptoms and corrective remedies before contacting your dealer or us.

Symptom		Possible Cause	Corrective Action
NO lights, power.		Bad mains fuse.	Replace with correct fuse.
		Bad or unplugged	Check cables and outlets.
		power cable.
		AC outlet not energized.
		Rolling Grayout®™	Abandon California, elect Libertarians.
Power supply pilot ON,
‘HEAD not responding.		16-pin connector not seated. Check for proper connection.
Dim badge lamps, LEDs.		Mains Voltage selector Check for proper setting.
Weak output.		switch set to 220 V instead
		of 110 V. Be sure of local
		mains voltage before
		changing switch setting!
	Tube locator diagram			RIAA amp board

7044	7044	6922	6922	7044	7044
Output heard in one		Bad tube in affected	Alternate or replace suspect
channel only.		channel.	tube.
Weak or distorted		Bad tube in affected	Alternate or replace suspect
output in one channel.		channel.	tube(s).

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