Marantz DV 7001 Service Manual

The Marantz DV 7001 is a high-end universal DVD player supporting DVD-Video, DVD-Audio, SACD, CD, and various digital audio formats. Features include HDMI output, component video, composite video, S-Video, coaxial and optical digital audio outputs, analog stereo audio, RS-232 control interface, and advanced video processing with upscaling capabilities. Below are key sections for technical specifications, service procedures, circuit diagrams, adjustments, and troubleshooting.

1. Technical Specifications 2. Block Diagrams 3. Disassembly Procedures 4. PCB Layouts 5. Circuit Diagrams 6. Adjustment Procedures 7. Test Points & Measurements 8. Parts List 9. Troubleshooting Guide 10. Firmware Update

Technical Specifications

Key technical parameters and performance characteristics of the Marantz DV 7001 universal DVD player.

Parameter	Specification
Supported Formats	DVD-Video, DVD-Audio, SACD, CD, CD-R/RW, MP3, WMA
Video Outputs	HDMI, Component, Composite, S-Video
Audio Outputs	Analog Stereo, Coaxial Digital, Optical Digital
Video DAC	12-bit/216MHz
Audio DAC	192kHz/24-bit Burr-Brown
Frequency Response	2Hz - 44kHz (SACD), 2Hz - 22kHz (CD)
Signal-to-Noise Ratio	>115dB
Dynamic Range	>100dB
Power Supply	AC 120V, 60Hz, 25W
Dimensions	440mm x 325mm x 107mm (WxDxH)

Block Diagrams

System architecture and signal flow diagrams for service troubleshooting.

Main System Block Diagram: Shows interconnections between major components.
Power Supply Block Diagram: Illustrates voltage distribution and regulation.
Audio Processing Block: Details DAC and analog output stages.
Video Processing Block: Shows upscaling and output circuitry.
Control System Block: Microprocessor and interface connections.

WARNING! Always disconnect power before performing any service procedures. Use proper ESD protection.

Disassembly Procedures

Step-by-step instructions for accessing internal components.

Remove top cover: Unscrew 6 Phillips screws on top and 2 on rear panel.
Remove front panel: Disconnect ribbon cables carefully after releasing latches.
Access main board: Remove mounting screws and ground connections.
Remove drive mechanism: Disconnect all cables and remove mounting screws.
Access power supply: Remove shield and disconnect AC input connector.

CAUTION! Handle optical pickup assembly with care. Avoid static discharge to sensitive components.

PCB Layouts

Main Board: Component placement and trace routing diagram.
Power Supply Board: Layout showing transformer, regulators, and filtering components.
Front Panel Board: Display and control button arrangement.
Output Board: Audio and video connector placements.
Drive Control Board: Servo and spindle motor control circuitry.

Circuit Diagrams

Detailed schematic diagrams for all major circuits.

Power Supply: Primary and secondary circuits with voltage specifications. Main Processor: Microcontroller and peripheral interfaces. Audio Section: DAC circuitry, analog output stages, and filtering. Video Section: Digital processing, DAC, and output drivers. Drive Mechanism: Laser pickup, spindle motor, and sled motor control.

Adjustment Procedures

Factory calibration and alignment procedures.

Laser Power Adjustment: Using optical power meter and test points.
Tracking Offset: Adjust for optimal disc reading performance.
Focus Bias: Fine-tune for different media types.
Output Level Calibration: Audio and video signal levels.
Clock Adjustment: System clock frequency verification.

Tip: Use specified test equipment and follow procedures exactly for proper calibration.

Test Points & Measurements

Critical test points and expected voltage/waveform measurements.

Power Supply Test Points: +5V, +12V, -12V, +3.3V rails.
Clock Signals: System clock and data clock waveforms.
Laser Diode: RF envelope and focus/tracking error signals.
Audio Output: Frequency response and distortion measurements.
Video Output: Signal levels and timing measurements.

WARNING! High voltages present in power supply section. Use isolation transformer when making live measurements.

Parts List

Complete component listing with manufacturer part numbers.

Component	Part Number	Description
Laser Pickup	SF-HD60	Optical pickup assembly
Main IC	MN2WS005	System processor
Audio DAC	PCM1606	24-bit audio converter
Video DAC	ADV7320	12-bit video converter
Power Transformer	TP-102	Switching transformer
Main Capacitor	400V/120μF	Primary filter capacitor

Troubleshooting Guide

Symptom	Possible Cause	Corrective Action
No power	Fuse, power supply	Check AC fuse F001; measure primary voltages; replace power IC if needed.
No disc reading	Laser, spindle motor	Clean lens; check laser diode current; replace pickup if RF signal weak.
No audio output	DAC, output stage	Check audio DAC voltages; verify output op-amps; test digital signal input.
No video output	Video processor, DAC	Verify video DAC operation; check output buffers; test HDMI transmitter.
Disc ejection issues	Loading mechanism	Check loading motor; inspect belt; clean and lubricate mechanism.

Reset: Unplug unit for 30 seconds to reset microprocessor.

Service Contact: Authorized Marantz service centers only.

Firmware Update

Procedure for updating system firmware to latest version.

Download firmware from Marantz support website. Burn to CD-R. Insert disc and power on while holding STOP button. Follow on-screen instructions. Do not interrupt power during update.

CAUTION! Incorrect firmware update may render unit inoperable. Follow instructions precisely.