Equipment information

Marantz 2285B Receiver
Manufacturer:
Marantz
Model: 2285B
Date:
Category: Audio Video TV Multimedia
Group: Receiver
Description: STEREOPHONIC RECEIVER
Information:

AUDIO SECTION: POWER OUTPUT AT 1% DISTORTION .......................................................................................................................................................................... 160 W RATED POWER OUTPUT, 1 kHz......................................................................................................................................................................................... 122 W TOTAL HARMONIC DISTORTION AT RATED POWER OUTPUT, 1 kHz...............................................................................................................0.1% I.M. DISTORTION AT RATED POWER OUTPUT (I.H.F. METHOD, 300 Hz AND 10 kHz MIXED 4:1 AT RATED POWER OUTPUT) .....................................................................................0.1% POWER BANDWIDTH (% RATED POWER OUTPUT) ................................................................................................................................. 8 Hz -30 kHz LOAD IMPEDANCE ...............................................................................................................................................................................................................4 ohms POWER OUTPUT AT 1% DISTORTION .......................................................................................................................................................................... 110 W RATED POWER OUTPUT, 1 kHz............................................................................................................................................................................................94 W TOTAL HARMONIC DISTORTION AT RATED POWER OUTPUT, 1 kHz...............................................................................................................0.05% I.M. DISTORTION AT RATED POWER OUTPUT (I.H.F. METHOD, 300 Hz AND 10 kHz MIXED 4:1 AT RATED POWER OUTPUT) .....................................................................................0.1% POWER BANDWIDTH ('Δ RATED POWER OUTPUT)................................................................................................................................. 8 Hz - 30 kHz LOAD IMPEDANCE ...............................................................................................................................................................................................................8 ohms Damping Factor, TV Multimedia">Speaker Output 40 Hz..................................................................................................60 1 kHz ..................................................................................................60 12.5 kHz ...........................................................................................40 Frequency Response Phono ±2 dB .........................................................18 Hz-30 kHz Aux ±1.5 dB.....................................................10 Hz — 40 kHz Main In ±1.5 dB...................................................... 8 Hz-45 kHz Signal-to-Noise Ratio, 1 kHz Phono...........................................................................................50 dB Aux ...............................................................................................50 dB Main In ........................................................................................55 dB Input Sensitivity, 1 kHz (Rated Input Voltage) Phono........................................................................................1.8 mV Aux ........................................................................................ 180 mV Main In ..................................................................r...................1.5 V Input Impedance, 1 kHz Phono.................................................................................. 47 kohms Aux ..................................................................................... 20 kohms Main In ............................................................................... 40 kohms Phono Equivalent Noise...............................................................1.8 μν Phono Dynamic Range ..................................................................98 dB Phono Input Capacitance............................................................100 pF Channel Balance Phono 0------40 dB...............................................................2.5 dB Aux 40 Hz-16 kHz......................................................2.0 dB Main In ..................................................................................... 1.0 dB Interchannel Crosstalk Phono 1 kHz ............................................................................38 dB 250 Hz - 10 kHz.........................................................33 dB Aux 1kHz............................................................................45 dB 250 Hz - 10 kHz.........................................................33 dB Tape 1 kHz ............................................................................45 dB 250 Hz - 10 kHz.........................................................33 dB Main In 1 kHz ............................................................................55 dB 250 Hz - 10 kHz.........................................................50 dB Intersource Crosstalk (Worst Point) 1 kHz...........................................................................................45 dB 250 Hz - 10 kHz........................................................................33 dB Output Voltage, 1 kHz Tape Out..................................................................................0.18 V Pre-Out........................................................................................1.5 V Output Impedance, 1 kHz Tape Out............................................................................ 500 ohms Pre Out............................................................................... 200 ohms Overload Margin, 1 kHz Phono...........................................................................................40 dB Aux ...............................................................................................50 dB Power Consumption Idling ...........................................................................................50 W Rated Power, 1 kHz............................................................... 350 W FM TV Multimedia">Tuner SECTION: Frequency Range......................................................... 87.5 — 108 MHz Usable Sensitivity 40 kHz Deviation, 98 MHz Mono, S/N26dB.....................................................................1.3 μν Stereo, S/N 46 dB.....................................................................42 μν Alternate Channel Selectivity, 98 MHz ±300 kHz...................67 dB Image Response Rejection, 98 MHz............................................90 dB IF Rejection, 98 MHz.....................................................................80 dB Spurious Response Rejection, 98 MHz ......................................90 dB AM Suppression, 98 MHz...............................................................55 dB Signal-to-Noise Ratio, 98 MHz Unweighted: Mono ..................................................................65 dB Stereo..................................................................62 dB Weighted: Mono ..................................................................69 dB Stereo..................................................................65 dB Pilot Signal & Subcarrier Rejection 19 kHz...........................................................................................65 dB 38 kHz...........................................................................................70 dB Total Harmonic Distortion, 98 MHz Mono ...........................................................................................0.15% Stereo...........................................................................................0.25% Frequency Response 30 Hz-15 kHz .........................................................+0.2,-1.0 dB Separation 250 Hz -6.3 kHz......................................................................43 dB 6.3 - 12.5 kHz............................................................................38 dB Channel Balance ............................................................................0.3 dB Output Voltage, 1 kHz ............................................................ 910 mV Output Impedance, 1 kHz...................................................... 150 ohms Acceptable Load Impedance, 1 kHz................................... 47 kohms Antenna Terminals Balanced............................................................................... 300 ohrr Unbalanced............................................................................75 ohrr AM TV Multimedia">Tuner SECTION: Frequency Range......................................................... 515 — 1650 kh Usable Sensitivity (26 dB S/N 30% Mod., 1 MHz)...................20 μ'’ Selectivity, 1 MHz +9 kHz ............................................................20 d Image Rejection, 1 MHz..................................................................43 d IF Rejection, 1 MHz.........................................................................23 dB Spurious Response Rejection, 1 MHz.........................................85 dB Signal-to-Noise Ratio, 1 MHz........................................................55 dB Frequency Response, 1 MHz +3 dB......................40 Hz — 2.3 kHz Total Harmonic Distortion, 1 MHz............................................... 0.4% GENERAL: Power Requirements................................................... 220 V AC, 50 Hz (E and N versions are featuring an external voltage selector for use on 110/120/240 V. Other versions can be converted by a qualified technician to operate on 110/120/240 V.' Power Consumption at Rated Output, Both Channels Operating............................................................................ 340 W ± 20 V. Idling Power .........................................................................50W+101'' Semiconductor Complement Integrated Circuits............................................................................ Transistors ........................................................................................<- Diodes..................................................................................................63 Field Effect Transistors.................................................................. 2 Dimensions Panel Width.........................................................17-5/16" (440 mm) Panel Height .........................................................5-3/8" (137 mm) Depth.................................................................. 14-1/2" (362 mm) Weight Unit alone...............................................................37.4 lbs (17.0 kg) Packed for shipment............................................42.9 lbs (19.5 kg)

These manuals are available for the above equipment:

Manual Type: Service Manual Marantz-6615-Manual-Page-1-Picture
Pages: 40
Size: 3.03 Mbytes (3179931 Bytes)
Language: english
Revision:
Manual-ID/Number: 221385501-0
Date:
Quality: Scanned document, all readable.
Upload date:
MD5: 8f3f038ecf99ca167d17082fd21fca6e
Downloads: 306 since 08 March 2015
Information:

1. P.W. BOARDS ... ... 1 2. TEST EQUIPMENT REQUIRED FOR SERVICING ... 1 3. AM ALIGNMENT PROCEDURES ... 2 3.1 AM IF Alignment ... 2 3.2 AM Frequency Range and Tracking Alignment ... 2 3.3 AM Signal Strength Meter Alignment ... 2 4. FM ALIGNMENT PROCEDURES ... 2 4.1 FM Frequency Range and Tracking Alignment ... 2 4.2 Stereo Separation Alignment ... 2 4.3 Muting Circuit Alignment ... 2 4.4 Dolby FM Tape Output Setting ... ... 2 5. AUDIO ADJUSTMENT ... 2 6. VOLTAGE CONVERSION FOR EUROPEAN MODEL ... 3 7. DIAGRAMS ... 5 7.1 Block Diagram ... 5 7.2 Connection Diagram - U.S.A. & Canada ... 7 7.3 Connection Diagram - Europe ... 9 8. SCHEMATIC DIAGRAMS AND COMPONENT LOCATIONS ... 11 8.1 FM Front End Circuit Board PI00 ... 11 8.2 AM Tuner, FM IF & MPX Stereo Decorder Circuit Board P200 ... 12 8.3 Phono Amp Circuit Board P400 ... 13 8.4 Main Amp Circuit Board P700 ... 14 8.5 Power Supply Circuit Board P800 ... 15 8.6 Pre and Tone Amp Circuit Board PEQ1 ... 16 8.7 Monitor and Filter Switches Circuit Board PS01 ... 17 8.8 Dolby Socket Circuit Board PK01 ... 18 8.9 Function Lamp Circuit Board PY01 ... 18 8.10 Dial Lamp Circuit Board PZ01 ... 18 8.11 Antenna Muting Circuit Board PC01 ... 18 8.12 TV Multimedia">Speaker Switches Circuit Board PN01 ... 19 9. MAJOR COMPONENT LOCATIONS ... ... 20 9.1 Cabinet-Front View ... 20 9.2 Chassis - Top View ... 20 9.3 Cabinet - Rear View . . . ... 21 9.4 Chassis - Bottom View ... 21 10. EXPLODED VIEWS ... 22 10.1 Rear Panel Exploded View - U.S.A. & Canada ... 22 10.2 Rear Panel Exploded View - Europe ... 22 10.3 Front Panel Exploded View ... 23 10.4 Chassis Exploded View ... 25 10.5 Packing Material Exploded View ... 27 11. PARTS LIST ... 28 12. TECHNICAL SPECIFICATIONS ... 41 13. SCHEMATIC DIAGRAMS ... 43 This service manual was prepared for use by Authorized Warranty Stations and contains service information for Marantz Model 2285B Stereophonic TV Multimedia">Receiver. Servicing information and voltage data included in this manual are intended for use by the knowledgeable and experienced technician only. All instructions should be read carefully. No attempt should be made to proceed without a good understanding of the operation of the TV Multimedia">Receiver. The parts list furnishes information by which replacement parts may be ordered from the Marantz Company. A simple description is included for parts which can usually be obtained through local suppliers.

Marantz-6615-Manual-Page-1-Picture


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