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Marantz SR7300 - Service Manual

Marantz SR7300
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AV SURROUND RECEIVER SR7300
UP
SURROUND
VOLUME
DOWN
MEMORY
TUNING
MODE
F/P
CLEAR
S-DIRECT MULTIROOM
MUTE
A/D7.1CH INPUTSPEAKRS A/B
POWER ON/STANDBY
PHONES
ENTER
STANDBY
AUX1 INPUT
S-VIDEODIGITAL VIDEO L AUDIO R
DSS/VCR2
AUX1 AUX2
VCR1
DVD
TV
CD
CD-R
TAPE
TUNER
ATT
SELECT
DISP MULTI AUTO TUNED ST V
–
OFF NIGHT PEAK ANALOG
DIGITAL
ATT
SLEEP
SURR
AUTO
DIRECT DISC 6.1 MTX 6.1 SPKR AB EQ
DIGITAL
SURROUND
PCM
L
C
R
SL S SR
LFE
AV Surround Receiver
SR7300 / SR7300OSE / PS7300
03AJ855010 MIT
First Issue 2002.11
SR7300 /
N1B/U1B/K1G/N1G/U1G
SR7300F /
N1B/U1B/K1G/N1G/U1G
R
SR7300 / SR7300F
Please use this service manual with referring to the user guide ( D.F.U. ) without fail.
Service
Manual
PS7300 /
F1B/F1N
AV Surround Amplifi er
PS7300
TABLE OF CONTENTS
SECTION PAGE
1. TECHNICAL SPECIFICATIONS AND SERVICE TOOL ........................................ 1
2. TECHNICAL DESCRIPTION................................................................................. 4
3. WIRING DIAGRAM................................................................................................ 5
4. BLOCK DIAGRAM................................................................................................. 7
5. SCHEMATIC DIAGRAM ........................................................................................ 9
6. PARTS LOCATION .............................................................................................. 25
7. IC DATA................................................................................................................ 36
8. EXPLODED VIEW AND PARTS LIST ................................................................. 47
9. SERVICE PROGRAM.......................................................................................... 51
10. UPDATE FIRMWARE .......................................................................................... 53
11. POWER AMPLIFIER ADJUSTMENT.................................................................. 55
12. SYSTEM ERROR................................................................................................ 56
13. TROUBLE SHOOTING........................................................................................ 57
14. ELECTRICAL PARTS LIST ................................................................................. 61
All manuals and user guides at all-guides.com
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Table of Contents

Other manuals for Marantz SR7300

Preview: User Guide
User Guide54 pages
Preview: Specification
Specification19 pages

Questions and Answers

  • K
    Keith VelezAug 25, 2025
    Why is there no sound from the center speaker on my Marantz Receiver?
    • A
      Amy BrooksAug 26, 2025
      If your Marantz Receiver is not outputting sound from the center speaker, here are a few things to check: * Ensure the center speaker cable is correctly and completely connected. * If STEREO is selected for Surround mode, no sound will be output from the center speaker. Select a different surround mode. * If Center = NONE has been selected in SETUP mode, change to another Surround mode and make the correct setting.
  • T
    Thomas ContrerasAug 26, 2025
    Why are the surround speakers not working on my Marantz Receiver?
    • D
      Dennis PhillipsAug 27, 2025
      If your Marantz Receiver is not outputting sound from the surround speakers, consider the following: * Make sure the surround speaker cable is correctly connected. * If STEREO is selected for Surround mode, no sound will be output from the surround speakers. Choose a different surround mode. * If Surround = NONE has been selected in SETUP mode, select another Surround mode and make the correct setting.
  • J
    Jeffrey ThompsonAug 27, 2025
    Why is there no sound from the surround back speaker on my Marantz Receiver?
    • D
      Deborah MorenoAug 27, 2025
      If your Marantz Receiver is not outputting sound from the surround back speaker, verify these points: * Ensure the surround back speaker cable is completely connected. * The surround mode must be set to EX/ES mode. Set surround mode to EX/ES. * Check if 'Surround back = NONE' has been selected in SPEAKERS SIZE SETUP. If so, make the correct setting.
  • S
    Shannon JosephAug 27, 2025
    What to do if my Marantz SR7300 Stereo Receiver has no sound and picture even when power is on?
    • D
      dominiqueweaverAug 27, 2025
      If your Marantz Stereo Receiver has no sound and picture when powered on, check the following: * Ensure mute is off using the remote control. * Verify the input cable is correctly connected according to the connection diagram. * Adjust the master volume. * Confirm the function selector is in the correct position.
  • A
    Allison MooreAug 28, 2025
    Why is there no output to Sub Woofer Out on my Marantz SR7300 Stereo Receiver?
    • K
      Kristin VelazquezAug 28, 2025
      If there's no output to the Sub Woofer Out, it might be because 'Sub-woofer = NONE' has been selected in SETUP mode. To fix this, select 'Sub-woofer = YES' in the SETUP mode.
  • J
    jessica29Aug 29, 2025
    Why does my Marantz Stereo Receiver not output any sound from the surround speakers?
    • A
      Alexander RandallAug 29, 2025
      If no sound is coming from the surround speakers, it could be due to a few reasons: * Check if the surround speaker cable connection is properly connected. * If 'STEREO' is selected for Surround mode, no sound will be output from the surround speakers. Try setting another Surround mode instead. * Verify that 'Surround = NONE' has not been selected in SETUP mode; if so, make the correct setting.
  • L
    Larry SanchezAug 30, 2025
    Why does my Marantz SR7300 Stereo Receiver not output any sound from the center speaker?
    • J
      Jennifer McphersonAug 30, 2025
      If there is no sound coming from the center speaker, check the following: * Ensure the center speaker cable is correctly connected. * If 'STEREO' is selected for Surround mode, no sound will be output from the center speaker; select another Surround mode. * Confirm that 'Center = NONE' has not been selected in SETUP mode; if so, make the correct setting.
  • V
    Victoria GarnerAug 23, 2025
    What to do if my Marantz Receiver has no sound and picture even when power is on?
    • B
      bmcculloughAug 23, 2025
      If your Marantz Receiver isn't producing any sound or picture even when powered on, there are several potential causes: * The mute function might be activated. Try canceling mute using the remote control. * The input cable may not be properly connected. Refer to the connection diagram to ensure correct cable connections. * The master volume could be turned down completely. Adjust the master volume to an audible level. * The function selector might be set to the wrong position. Select the correct input position.
  • W
    Wesley CombsSep 1, 2025
    What to do if my Marantz SR7300 Stereo Receiver FM or AM reception fails?
    • M
      Morgan WilliamsSep 1, 2025
      If the FM or AM reception fails, correctly connect the indoor FM and AM antennas to the FM and AM antenna outlets.
  • K
    Kimberly RiddleSep 1, 2025
    Why is my Marantz Receiver playing sound from the wrong input?
    • D
      Dean LambertSep 1, 2025
      If your Marantz Receiver is outputting sound and pictures from equipment other than what's selected with the function selector, it could be due to an incorrectly connected input cable. Refer to the connection diagram and ensure the cable is connected correctly.

Summary

1. Technical Specifications and Service Tool

Technical Specifications

Detailed specifications for FM/AM tuners, audio, and video sections.

Service Tool Information

Details about the necessary service tool for unit updates.

2. Technical Description

Audio Technologies Overview

Explains DTS, Neo:6, Dolby Digital EX, and CS-II audio formats.

3. Wiring Diagram

4. Block Diagram

5. Schematic Diagram

6. Parts Location

7. IC Data

8. Exploded View and Parts List

9. Service Program

Factory Mode and Product Reset

Procedures for tuner adjustment and system memory reset.

10. Update Firmware

Firmware Update Procedures

Instructions for updating CPU and DSP firmware.

11. Power Amplifier Adjustment

Idling Current Alignment

Steps to adjust the idling current for optimal power amplifier performance.

12. System Error and Troubleshooting

System Error Codes

Identifies and explains error messages displayed on the unit.

Trouble Shooting Guide

Flowcharts to diagnose and resolve common operational issues.

14. Electrical Parts List

Parts Identification and Safety

Explains parts codes, resistor/capacitor identification, and safety notes.

Marantz SR7300 Specifications

General IconGeneral
TypeStereo Receiver
Total Harmonic Distortion (THD)0.08%
Signal-to-Noise Ratio100 dB
Input Sensitivity200 mV
Headphone OutputYes
Power Output100 W per channel (8 ohms)
Frequency Response10 Hz - 100 kHz
Input Impedance47k ohms
Digital InputsCoaxial, Optical
Analog Inputs6
Analog Outputs1
Tuner SectionAM/FM

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