Equipment information:

Marantz 4230 Receiver
Manufacturer:
Marantz
Model: 4230
Date:
Category: Audio, Video, TV, Multimedia
Group: Receiver
Description: Stereo 2+ Quadradial 4 Receiver
Information:
                                    TECHNICAL SPECIFICATIONS
FM SECTION
Tuning Frequency
Range...........................................................................................................
88 — 108MHz
IHFM Usable Sensitivity
...........................................................................................................3.5μ/at
30dB
50μ/ at 70dB
I HF
Selectivity..............................................................................................................................................
48dB
Capture Ratio
..............................................................................................................................................3.0dB
Image Rejection Ratio at
106MHz..........................................................................................................50dB
Total Harmonic Distortion (Mono)
.........................................................................................................0.6%
Total Harmonic Distortion
(Stereo).........................................................................................................0.8%
Frequency Response (ref. 75Msec.
de-emphasis)........................................±2dB,
from 30Hz to 15KHz
Stereo Separation at 1 KHz
......................................................................................
40dB, 26dB at 10KHz
Quadradial Output (400Hz 75KHz
dev.).....................................................................
300mV, 15Kohms
AM SECTION
Tuning Frequency
Range.....................................................................................................
540 to 1605KHz
Usable
Sensitivity..........................................................................................................................................25μ/
Selectivity.................................................................................................................................
1000KHz, 25dB
Image Rejection Ratio at
1400KHz......................................................................................................
45dB
Bandwidth (—6 dB)
.................................................................................................................................
7KHz
AUDIO SECTION
Input Sensitivity and Impedance — Phono
.................................................................
2.2mV, 47Kohms
- High
level..................................................................................150mV
Phono Frequency
Response............................................................................30
to 15KHz, ±1dB (RIAA)
Intermodulation Distortion below rated power output (SMPTE)
...........................Less than 0.9%
Nominal 0.5%
Damping Factor
...........................................................................................................2
channel: 20 at 20Hz
4 channel: 40 at 20Hz
Rated Continuous (RMS)
Output.....................................................................60W
at 8ohms (30W x 2)
all channels operating simultaneously at 40Hz 48W at 8ohms
(12W x 4)
to 20KHz for nominal harmonic distortion
GENERAL
Power
Requirements.................................................................................................................................
120V
Power Consumption— at rated power
output..............................................................................
230Watts
— idling (no signal)
........................................................................................
33Watts
Dimensions — Panel
Width.................................................................................................
17 21/64 Inches
— Panel Height
...................................................................................................
5 25/64 Inches
— Depth
.................................................................................................................14
3/8 Inches
— Width (Packed for
Shipment).......................................................................22
1/4 Inches
— Height (Packed for
Shipment).....................................................................
10 1/2 Inches
— Depth (Packed for
Shipment).....................................................................
19 1/2 Inches
Weight — Unit
alone.............................................................................................................................31.3
lbs
— Packed for
Shipment.........................................................................................................
40.1 lbs

These manuals are available for the above equipment:

Marantz -- 4230 -- Service Manual
File name: Marantz-6621-Manual-Page-1-Picture
Manual Type: Service Manual
Pages: 40
Size: 5.71 Mbytes (5987701 Bytes)
Language: english
Revision:
Manual-ID/Number: 2886855010
Date:
Quality: Scanned document, all readable.
Upload date:
MD5: 83eb5680c54af94a73a784e9b1aea076
ed2kID: ef2bcb0fb68f1de090c0a3c7cc8b906a
Downloads: 81 since 08 March 2015
Information:
Introduction....................................................................................................................................................
1
Service
Notes...............................................................................................................................................
1
AM
Tuner......................................................................................................................................................
1
FM
Tuner......................................................................................................................................................
2
Phono and Pre-Amplifier
...........................................................................................................................
3
Dolby
Unit....................................................................................................................................................
4
400Hz
Tone.................................................................................................................................................
4
Dolby
Switch...............................................................................................................................................
4
Main
Amplifier.............................................................................................................................................
6
BTL (Balanced Transformerless)
Connection.........................................................................................
6
Power Supply
Unit......................................................................................................................................
6
Audio Trouble
Analysis.............................................................................................................................
6
Test Equipment Required for
Servicing.................................................................................................
7
AM Alignment
Procedure..........................................................................................................................
7
FM Alignment
Procedure.............................................................................
.......................................... 8
Audio
Adjustment......................................................................................................................................
9
Automatic Voltage Regulator
Adjustment.............................................................................................
9
Dolby Alignment
Procedure......................................................................................................................
9
Alignment Procedures of Dolby FM Preset Level Control
.................................................................10
Explanation of the Dolby Processing
Chart...........................................................................................10
Parts
List..........................................................................................................................................................25
Technical
Specifications...............................................................................................................................38

This service manual was prepared for use by Authorized
Warranty Stations and contains service information for
Marantz Model 4230 Stereo 2 + Quadradial 4 Receiver.
Servicing information and voltage data included in this
manual are intended for use by the knowledgeable and
experienced technician only. All instruction should be read
carefully. No attempt should be made to proceed without a
good understanding of the operation in the receiver.
The parts list furnish information by which replacement part
may be ordered from the Marantz Company. A simple
description is included for parts which can be usually be
obtained through local suppliers.
Marantz-6621-Manual-Page-1-Picture
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