Marantz 2285B User Manual

Procedure for aligning the AM Intermediate Frequency (IF) stage.

Aligns AM frequency range and tracks tuning capacitor.

Calibrates the AM signal strength meter for accurate readings.

Aligns FM frequency range and tracks tuning capacitor for optimal reception.

Optimizes stereo separation in FM reception for better audio quality.

Adjusts the FM muting circuit for proper operation and silence.

Sets Dolby FM tape output levels for accurate playback.

Adjusts DC offset voltage in the main amplifier for both channels.

Sets idle current for amplifier channels to ensure proper bias.

Detailed technical specs for the amplifier section.

Detailed technical specs for the preamplifier section.

Detailed technical specs for the FM tuner section.

Detailed technical specs for the AM tuner section.

General specifications including power, dimensions, and weight.

Detailed technical specs for the audio section (European model).

FM tuner specifications for the European model.

AM tuner specifications for the European model.

General specifications for the European model.

Overall functional block diagram of the receiver's signal flow.

Wiring diagram illustrating connections for USA & Canada models.

Wiring diagram illustrating connections for European models.

Schematic and component location for the FM Front End board.

Schematic and location for AM/FM IF/MPX board.

Schematic and component location for the Phono Amplifier board.

Schematic and component location for the Main Amplifier board.

Schematic and component location for the Power Supply board.

Schematic and location for Pre & Tone Amplifier board.

Schematic and location for Monitor & Filter Switches board.

Schematic and location for the Dolby Socket board.

Schematic and location for the Function Lamp board.

Schematic and location for the Dial Lamp board.

Schematic and location for the Antenna Muting board.

Schematic and location for the Speaker Switches board.

Identifies major components visible on the front panel of the receiver.

Identifies major components located on the top of the receiver chassis.

Identifies major components visible on the rear panel of the receiver.

Identifies major components located on the bottom of the receiver chassis.

Exploded view of the rear panel for USA & Canada models, showing part placement.

Exploded view of the rear panel for European models, showing part placement.

Exploded view of the front panel components and their assembly.

Exploded view of the internal chassis components and their assembly.