Marantz SR6001 Service Manual

The Marantz SR6001 is a high-performance 7.1 channel AV receiver featuring 110W per channel, HDMI 1.3a connectivity, Dolby TrueHD and DTS-HD Master Audio decoding, Audyssey MultEQ auto calibration, multi-room capability, and advanced video processing. This service manual provides technical specifications, disassembly instructions, circuit diagrams, troubleshooting procedures, and maintenance guidelines for qualified service technicians.

1. Technical Specifications 2. Safety Precautions 3. Internal Components 4. Disassembly Procedure 5. Circuit Diagrams 6. PCB Layouts 7. Test Points & Measurements 8. Firmware Update Procedure 9. Troubleshooting Guide 10. Parts List 11. Service Notes

Technical Specifications

Detailed technical specifications and performance characteristics of the Marantz SR6001 AV receiver.

Specification	Details
Power Output	110W x 7 (8Ω, 20Hz-20kHz, 0.08% THD)
Frequency Response	10Hz-100kHz (+1/-3dB)
HDMI	4 inputs, 1 output (v1.3a, Deep Color, x.v.Color)
Audio Decoding	Dolby TrueHD, DTS-HD Master Audio
Video Processing	Faroudja DCDi Cinema, 1080p upscaling
Inputs/Outputs	Component (3 in/1 out), Composite (4 in/1 out)
Digital Audio	Optical (4 in), Coaxial (2 in)
Dimensions	440 x 427 x 171 mm (W x D x H)
Weight	14.5 kg
Power Consumption	650W maximum

Safety Precautions

Critical safety information for service technicians working on the SR6001 receiver.

Disconnect AC power before servicing - unit contains lethal voltages.
Use proper grounding techniques and anti-static equipment.
Replace components only with specified parts to maintain safety.
Reinstall all protective shields and covers after service.

WARNING! High voltages are present even when unit is switched off. Always discharge power supply capacitors before servicing.

Internal Components

Overview of main internal components and their locations.

Main Power Supply Board: Located at rear left section.
Amplifier Section: Seven discrete amplifier channels.
Digital Processing Board: HDMI and audio processing circuits.
Front Panel Assembly: Display and control interface.
Transformer: Toroidal power transformer, center mounted.
Heat Sink: Large aluminum extrusion for amplifier cooling.

CAUTION! Handle circuit boards by edges only to prevent ESD damage.

Disassembly Procedure

Step 1: Remove top cover by unscrewing 8 Phillips screws.
Step 2: Detach front panel by removing 4 screws and disconnecting ribbon cables.
Step 3: Remove main board by detaching all connectors and 12 mounting screws.
Step 4: Access power supply by removing shield and disconnecting high-voltage cables.
Step 5: Amplifier module can be accessed after main board removal.

Circuit Diagrams

Complete schematic diagrams for all major circuits including:

Main Block Diagram: Signal flow from inputs to outputs.
Power Supply: Switching power supply and regulation circuits.
Amplifier Section: Discrete 7-channel amplifier schematics.
HDMI Board: Digital video and audio processing.
Control System: Microprocessor and interface circuits.

PCB Layouts

Printed circuit board layouts with component identification.

Board	Reference	Description
Main Board	AWM899	Primary audio/video processing
Power Supply	PS901	Switching power supply unit
HDMI Board	HDB702	HDMI input/output processing
Front Panel	FPA301	Display and control interface
Amplifier Module	AMP445	7-channel power amplifier

Test Points & Measurements

Critical test points and measurement procedures for proper alignment.

Power Supply Voltages: +12V, +5V, +3.3V, ±15V rails.
Amplifier Bias Current: Adjust VR801-VR807 for 20mA per channel.
HDMI Signal Integrity: Check differential pair termination.
Processor Clock: 27.000MHz crystal oscillator measurement.

Tip: Use calibrated test equipment for accurate measurements.

Firmware Update Procedure

Step-by-step firmware update instructions for service technicians.

Download latest firmware from Marantz service portal.
Copy to USB drive formatted as FAT32.
Insert USB drive into front panel service port.
Enter service mode: Hold TONE + STATUS while powering on.
Select "Firmware Update" from service menu.
Do not interrupt power during update process.
Unit will reboot automatically when complete.

WARNING! Interrupted firmware update may render unit inoperable.

Troubleshooting Guide

Common symptoms and diagnostic procedures for the SR6001.

Symptom	Possible Cause	Corrective Action
No power	Fuse, power supply	Check F901 (8A), test power supply voltages
No audio output	Amplifier, protection circuit	Check protection relay, amplifier bias
HDMI no signal	HDMI board, firmware	Update firmware, check HDMI IC voltages
Overheating	Heat sink, fan	Clean heat sink, check thermal paste
Display issues	Front panel, ribbon cables	Reseat cables, check display driver IC

Parts List

Critical replacement parts and component specifications.

Power Transformer: T001 - Toroidal, 650VA
Main Fuse: F901 - 8A, 250V, slow-blow
Power Transistors: 2SC5200/2SA1943 (output pairs)
HDMI Controller: IC702 - R8A66110SG
Main Processor: IC501 - SH4 200MHz
DAC: IC401 - AK4358 (8-channel)
Display: VFD-40S2S (vacuum fluorescent)

Service Notes

Important service notes and special procedures for the SR6001.

Factory Reset: Hold "CLEAR" while powering on to reset all settings.
Service Mode: TONE + STATUS during power-on for diagnostic menu.
Calibration: Use Audyssey microphone for proper room calibration.
Warranty: Record all service work for warranty validation.

Service Support: Contact Marantz technical support at 1-800-270-2753 or visit www.marantz.com