Marantz 4230 Ricevitore
Manufacturer:
Marantz

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Model:
4230
Date:
0
Category:
Audio, Video, TV, Multimedia
Group:
Ricevitore
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

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Manuale di servizio
Manual type:
Manuale di servizio
Pages:
40
Size:
5.71 Mbytes (5987701 Bytes)
Language:
english
Revision:
Manual-ID:
2886855010
Date:
Quality:
Documento scansionato, tutto leggibile.
Upload date:
2015 03 08
MD5:
83eb5680c54af94a73a784e9b1aea076
Downloads:
650

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.

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