Sony DADC Manual

The Sony DADC (Digital Audio Disc Corporation) system is a professional-grade optical disc authoring and replication solution designed for high-volume production of CDs, DVDs, and Blu-ray discs. This manual covers the core system components, operation procedures, safety guidelines, maintenance, and troubleshooting for the DADC production line. Below are key sections for system overview, installation, operation, specifications, and support.

System Overview

Key components: Master encoding station, Glass mastering unit, Molding press, Metallization chamber, Spin coater, Printing unit, Quality inspection module, Control console.

Component	Function
Master Encoding Station	Converts digital source to glass master via laser beam recorder
Glass Mastering Unit	Creates physical glass master from encoded data
Molding Press	Injection molds polycarbonate substrates from stamper
Metallization Chamber	Applies reflective aluminum layer via sputtering
Spin Coater	Applies protective lacquer coating
Printing Unit	Silk-screen or offset prints label artwork
Quality Inspection Module	Automated defect detection and verification
Control Console	Centralized system monitoring and operation

Safety Precautions

Install in cleanroom environment with proper ventilation.

1. Electrical safety: Connect to dedicated 220V/30A circuit with proper grounding.
2. Chemical handling: Use PPE when handling photoresist, solvents, and inks.
3. Mechanical safety: Lock out power before servicing moving parts.
4. Laser safety: Never bypass interlocks on laser recording units.

WARNING! High-voltage components present. Authorized personnel only. Follow all local safety regulations.

Installation & Setup

Uncrate components using factory-supplied lifting equipment.

1. Site preparation: Ensure level floor, stable temperature (20°C ±2°C), humidity control (45% ±10%).
2. Assemble molding press: Alize platens, connect hydraulic lines, calibrate temperature zones.
3. Install metallizer: Connect vacuum pumps, argon supply, high-voltage power.
4. Connect utilities: Power, compressed air (6 bar), chilled water (15°C), exhaust ventilation.
5. System initialization: Power up control console, run diagnostic tests, load firmware.

CAUTION! Use certified installers. Improper installation voids warranty.

Technical Specifications

• Formats Supported: CD-DA, CD-ROM, DVD-5/9/10, Blu-ray (BD-25/50).
• Production Speed: Up to 18,000 discs per hour (CD), 8,000 per hour (DVD).
• Mastering Laser: 405nm blue laser for Blu-ray, 650nm for DVD, 780nm for CD.
• Resolution: 0.267μm pit length (Blu-ray), 0.4μm (DVD), 0.83μm (CD).
• Substrate Material: Polycarbonate (1.2mm for CD/DVD, 1.1mm for Blu-ray).
• Power Requirements: 220-240V AC, 50/60Hz, three-phase, 30kVA max.
• Dimensions: Production line: 15m × 4m × 2.5m (L×W×H).
• Operating Environment: Class 10,000 cleanroom, 18-22°C, 40-50% RH.

Control Panel & Interface

Touch-screen HMI with password-protected access levels (Operator, Technician, Engineer).

Main Screen: Production status, throughput, error logs, temperature/pressure graphs.

Mastering: Source selection (DLT, ISO, network), encoding parameters, test cuts. Molding: Clamp force (10-30 tons), melt temperature (320-360°C), cycle time (3-5 sec). Metallization: Sputter current (2-5A), argon flow (20-50 sccm), base pressure (5×10⁻⁶ mbar). Printing: Ink viscosity, screen mesh, registration adjustment. Quality: BER/PI/PO measurements, reflectivity, tilt.

Disc Authoring Process

From digital source to glass master.

1. Prepare source: Verify DDP image or ISO file, run pre-mastering checks.
2. Load substrate: Clean glass blank, apply photoresist layer in spin coater.
3. Laser recording: Expose photoresist according to encoded data pattern.
4. Develop: Remove exposed photoresist, reveal pit/land structure.
5. Electroforming: Nickel plating creates stamper (negative of master).
6. Inspection: Check stamper for defects under microscope.

Tip: Maintain log for each stamper with serial number and usage count.

Replication & Printing

High-volume disc production.

1. Molding: Inject polycarbonate into mold cavity with stamper, cool, eject.
2. Metallization: Sputter aluminum layer (50-100nm) onto data surface.
3. Protective coating: Apply UV-curable lacquer via spin coating, cure with UV lamp.
4. Bonding (DVD-9/Blu-ray): Join two substrates with adhesive, check bond uniformity.
5. Printing: Load ink, align screens, print label, dry in IR oven.
6. Packaging: Auto-stack, shrink wrap, or load into jewel cases.

WARNING! Monitor molding temperatures to prevent disc warpage.

Quality Control

Automated and manual inspection points.

Test	Standard	Method
Block Error Rate (BLER)	< 220 (CD)	Pulsetech analyzer
PI/PO Errors	PI < 280, PO = 0 (DVD)	CATS tester
Reflectivity	70-85% (CD), 45-85% (DVD)	Spectrophotometer
Tilt	±0.8° radial, ±0.3° tangential	Tilt meter
Visual defects	No bubbles, pits > 100μm	Microscope/automated vision

Sampling rate: 1 disc per 500 for CD, 1 per 300 for DVD, 1 per 100 for Blu-ray.

Maintenance Procedures

Daily, weekly, and monthly maintenance schedules.

1. Daily: Clean molding tool, check hydraulic oil level, purge ink lines.
2. Weekly: Replace filters (air, water), calibrate sensors, clean laser optics.
3. Monthly: Inspect vacuum seals, lubricate moving parts, test safety interlocks.
4. Quarterly: Replace UV lamps, recalibrate entire system, update firmware.

CAUTION! Use only Sony-approved parts and lubricants.

Compliance Information

CE marked; complies with EU Machinery Directive 2006/42/EC. Laser safety: Class 1 enclosed laser product per IEC 60825-1. Environmental: RoHS compliant; recycling program available for used stampers and materials. Copyright © Sony Corporation; DADC is a trademark of Sony. For technical support, contact Sony Professional Solutions at +1-800-686-7669 or visit pro.sony.com/dadc.

Troubleshooting Guide

Symptom	Possible Cause	Corrective Action
High error rates	Dirty stamper, laser misalignment	Clean stamper; recalibrate laser focus/tracking.
Disc warpage	Uneven cooling, excessive clamp force	Adjust cooling profile; reduce clamp force by 5%.
Poor metallization	Low vacuum, argon impurity	Check vacuum pumps; replace argon cylinder.
Print smearing	Ink viscosity, improper drying	Adjust thinner ratio; increase IR oven temperature.
System alarm	Over temperature, low pressure	Check heaters and sensors; verify utility supplies.

Reset: Control panel > Maintenance > System Reset (requires engineer password).

Service: +1-800-686-7669; pro.sony.com/dadc/support