Marantz UD 7006 Service Manual

The Marantz UD 7006 is a high-end universal disc player supporting Blu-ray, DVD, SACD, CD, and various audio formats. This service manual provides detailed technical information, schematics, disassembly instructions, troubleshooting guides, and parts lists for qualified service technicians. Below are key sections for specifications, block diagrams, adjustment procedures, troubleshooting, and replacement parts.

1. Product Overview 2. Technical Specifications 3. Block Diagrams 4. Disassembly Instructions 5. Adjustment Procedures 6. Circuit Descriptions 7. Troubleshooting Guide 8. Parts List 9. PCB Layouts 10. Safety Precautions 11. Service Notes

Product Overview

The Marantz UD 7006 universal disc player features advanced video processing, high-quality audio circuitry, and comprehensive connectivity options for professional and home theater applications.

Section	Description
Main Board	Central processing unit with video/audio decoders
Power Supply	Switching power supply with multiple voltage outputs
Disc Mechanism	High-precision Blu-ray/DVD/CD transport system
Audio Board	DAC circuits and analog audio output stages
Front Panel	Display and control interface
Rear Panel	Input/output connectors and interfaces

Technical Specifications

Supported Formats: BD-ROM, BD-R/RE, DVD-Video, DVD-Audio, SACD, CD, CD-R/RW
Video Output: HDMI 1.4a, Component, Composite, S-Video
Audio Output: HDMI, Coaxial, Optical, 7.1ch Analog, Stereo Analog
Power Requirements: AC 120V, 60Hz, 45W
Dimensions: 440mm × 385mm × 125mm (W×D×H)
Weight: 12.5 kg
Operating Temperature: +5°C to +35°C
Humidity: 5% to 85% (non-condensing)

Block Diagrams

System block diagram showing signal flow from disc mechanism to output stages.

Disc Mechanism: Laser pickup → RF amplifier
Signal Processing: Main decoder → Video processor → Audio processor
Output Stages: HDMI transmitter → Analog audio circuits
Control System: Main CPU → Front panel → Remote control

NOTE: Refer to schematic diagrams for detailed circuit connections.

Disassembly Instructions

Step-by-step procedure for accessing internal components.

Remove top cover: Unscrew 6 Phillips screws on rear and sides.
Remove front panel: Release 4 clips and disconnect ribbon cables.
Remove main board: Disconnect all cables and unscrew mounting screws.
Access disc mechanism: Remove shield and mechanism mounting screws.

WARNING! Disconnect AC power before disassembly. Use anti-static precautions.

Adjustment Procedures

Factory adjustment procedures requiring specialized test equipment.

Adjustment	Test Point	Specification
Laser Power	Test pin on pickup	120-150mV (CD), 180-220mV (DVD)
Tracking Balance	RF waveform	Equal amplitude both sides
Focus Bias	RF envelope	Maximum amplitude
Audio Output Level	Analog outputs	2.0Vrms ±0.1V (1kHz, 0dB)

Circuit Descriptions

Detailed explanation of major circuit blocks and their functions.

Power Supply: Switching regulator with +5V, +12V, +3.3V, and -12V outputs. Overcurrent and overvoltage protection circuits.

Main Board: System-on-chip processor with embedded memory. Handles disc decoding, menu navigation, and system control.

Audio Section: High-quality DACs with discrete analog output stages. Supports PCM up to 192kHz/24bit and DSD.

Troubleshooting Guide

Symptom	Possible Cause	Corrective Action
No power	Power supply fault	Check fuse F1001, measure DC outputs
No disc recognition	Laser pickup	Clean lens, check pickup voltage, replace if necessary
No video output	Video processor	Check HDMI chip U7001, replace if faulty
No audio output	Audio circuits	Check DAC U6001, analog output stages
Disc loading issues	Mechanism	Check loading motor, belt, and mechanism alignment

Parts List

Critical replacement parts with manufacturer part numbers.

Laser Pickup: HOP-1200W (Original part number)
Main IC: MN2WS0060 (System processor)
Power Fuse: F1001, 2.5A 250V (T-type)
Loading Motor: SFM-4020-11410
Front Panel Display: VFD-25280

PCB Layouts

Detailed printed circuit board layouts for main board, power supply, and audio board.

Main Board: Component placement and trace routing
Power Supply: High-voltage and low-voltage sections
Audio Board: Analog output circuits and DAC section
Front Panel: Display and control interface

NOTE: Use original schematics for accurate component identification.

Safety Precautions

Essential safety information for service technicians.

WARNING! High voltages present in power supply section. Always disconnect AC power before servicing. Use isolation transformer when testing live circuits. Follow ESD precautions when handling sensitive components.

Service Notes

Important service information and firmware updates.

Firmware Version: Current version 1.12 (check for updates)
Factory Reset: Hold STOP and POWER buttons for 5 seconds
Service Mode: Enter by pressing 1, 3, 5, 7, 9 on remote
Warranty: 1 year parts and labor for original purchaser

Service Support: Contact Marantz service department for technical assistance and genuine replacement parts.