Equipment information

Marantz 2250 Receiver
Manufacturer
Marantz
Model 2250
Date
Category: Audio, Video, TV, Multimedia
Group Receiver
Description STEREOPHONIC RECEIVER
Information
                                    TECHNICAL SPECIFICATIONS Amplifier Section:
RATED POWER
OUTPUT................................................................................
50 Watts per channel,
Continuous Average Power, both channels driven.
Power Band....................................... . . .
......................................................................
20 Hz to 20 kHz
Total Harmonic Distortion
...............................................................................................................
0.3%
Load
Impedance............................................................................................................................
8 ohms
Intermodulation Distortion at Rated
Power....................................................................................0.25%
Damping Factor
..................................................................................................................................
55
Frequency Response
..................................................................................
20 Hz to 20 kHz ±0.5 dB
Preamplifier Section:
Phono:
Dynamic Range
..........................................................................................................................
96 dB
NOTE: Dynamic Range is the ratio in dB of the phono input
overload to equivalent input noise.
Equivalent Input Noise
...........................................................................................................
1.5 μν
Input Overload .......................................
.............................................................................
100 mV
Sensitivities (for rated power output)
Phono.........................................................................................................................................
1.8 mV
Tape
..........................................................................................................................................
180 mV
Main In ............................
Frequency Response (phono)
............................ 1.5 V
30 Hz to 15 kHz ±1.0 dB
Input Impedances
Phono..................................................................................................................................
47 K ohms
Aux or Tape
.......................................................................................................................
100 K ohms
Main In
...............................................................................................................................
30 K ohms
Tape Output Level
......................................................................................................................
775 mV
Ref.: 7.75 mV at phono input Signal to Noise Ratio
Aux Input
...............................................................................................................................
· ■ 85 dB
Phono Input
...............................................................................................................................
75 dB
Tone Controls
Bass: 100
Hz.............................................................................................................................
±10 dB
Tone Mode at 250
Hz.................................................................................................
± 3 dB
Mid: 700 Hz
........................................................................................................................±7.5dB
Treble: 10
kHz.............................................................................................................................
±10 dB
. Tone Mode at 4 kHz
.................................................................................................
± 3 dB
FM Tuner Section:
IHF Usable Sensitivity
..................................................................................................................
2.5 /xV
Sensitivity (DIN)
..............................................................................................................................2.1
μν
Selectivity (alternate carrier)
.........................................................................................................
60 dB
Quieting Slope
RF Input for 30 dB Quieting
....................................................................................................
1.9 μν
Quieting at 5 μν RF
Input.........................................................................................................
55dB
Quieting at 10 μν RF Input
...................................................................................................
60 dB
Quieting at 50 μν RF Input
....................................................................................................
70 dB
Total Harmonic Distortion
Mono:.............................................................................................................................................
0.3%
Stereo:.............................................................................................................................................
0.4%
Capture
Ratio...................................................................................................................................
1.5 dB
Stereo Separation at 1
kHz.............................................................................................................
40 dB
Spurious Rejection
........................................................................................................................
95 dB
Image Rejection
...............................................................................................................................
70 dB
IF
Rejection........................................................................................................................................
90 dB
AM Suppression
...............................................................................................................................
55 dB
AM Tuner Section:
Sensitivity
.......................................................................................................................................
20 μ V
General:
Power Requirements .
.......................................................................
110/120/220/240 V AC, 50 Hz
Power Consumption at rated
output, both channels
operating......................................................................................
220 Watts
Idling Power (Volume Control at zero)
................................................................................
35 Watts
Dimensions:
Panel Width
...............................................................................................................................
43.1 cm
Panel Height
...........................................................................................................................
13.6 cm
Depth
........................................................................................................................................
35.6 cm
Weight:
Unit
Alone...............................................................................................................................
15.3 kg
Packed for
Shipment...........................................................................................................
18.3 kg

These manuals are available for the above equipment:

Marantz -- 2250 -- Service Manual
File name Marantz-6606-Manual-Page-1-Picture
Manual Type Service Manual
Pages 42
Size 3.17 Mbytes (3325761 Bytes)
Language english
Revision
Manual-ID/Number
Date
Quality Scanned document, all readable.
Upload date
MD5 f8669272385eb4dc504601d9ec561dcb
Downloads 155 since 08 March 2015
Information
Introduction
.................................................................................................................................
1
P.W. Board
......................................................................................................................................
1
Test Equipment Required for Servicing
....................................................................................
2

This service manual was prepared for use by Authorized
Warranty Stations and contains service information for
Marantz Model 2250 Stereophonic 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 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.
AM Alignment Procedure
........................................................................
............................... 2
FM Alignment Procedure
...........................................................................................................
3
Stereo Separation Alignment
......................................................................................................
3
Muting Circuit Alignment
...........................................................................................................
3
Dolby FM Tape Output Setting
..................................................................................................
4
Audio Adjustment ..............................
.....................................................................................
4
Technical Specifications (for U.S.A. Model)
.............................................................................25
Parts
List..........................................................................................................................................27
Service Information for European
Model...,.............................................................................38
Technical Specifications (for European Model)
........................................................................38
Marantz-6606-Manual-Page-1-Picture
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