The Marantz CDR 630 is a professional-grade CD recorder featuring high-quality audio recording capabilities, digital inputs/outputs, analog recording functions, editing features, and professional connectivity options. This service manual provides comprehensive technical information for service technicians, including schematics, alignment procedures, troubleshooting guides, and replacement part information.
Detailed technical specifications and performance characteristics of the Marantz CDR 630 CD recorder.
| Parameter | Specification |
|---|---|
| Frequency Response | 20Hz - 20kHz ±0.5dB |
| Signal-to-Noise Ratio | >100dB |
| Total Harmonic Distortion | <0.005% |
| Dynamic Range | >95dB |
| Sampling Frequency | 44.1kHz |
| Quantization | 16-bit linear |
| Digital Inputs | Coaxial, Optical |
| Digital Outputs | Coaxial, Optical |
| Analog Inputs | RCA, XLR balanced |
| Analog Outputs | RCA, XLR balanced |
| Power Requirements | 120V/230V AC, 50/60Hz |
| Power Consumption | 25W max |
| Dimensions | 430mm x 100mm x 310mm |
| Weight | 5.2kg |
System block diagrams showing signal flow and functional relationships between major components.
NOTE: Refer to schematic diagrams for detailed component-level information.
Detailed descriptions of major circuit sections and their operation.
Step-by-step instructions for disassembling the unit for service access.
WARNING! High voltages present in power supply section. Use proper safety procedures.
Factory alignment procedures and adjustment points for optimal performance.
| Adjustment | Procedure | Test Equipment |
|---|---|---|
| Laser Power | Adjust for specified RF level | Oscilloscope, test disc |
| Focus Offset | Optimize focus error signal | Oscilloscope, alignment jig |
| Tracking Balance | Center tracking error signal | Oscilloscope, test disc |
| PLL Adjustment | Set clock synchronization | Frequency counter |
| Output Level | Calibrate analog output voltage | Audio analyzer, test tones |
| Bias Adjustment | Set recording bias current | Oscilloscope, test equipment |
Comprehensive test procedures for verifying unit performance and troubleshooting.
NOTE: Use specified test discs and equipment for accurate measurements.
Complete list of replacement parts with manufacturer part numbers.
| Part Number | Description | Qty | Notes |
|---|---|---|---|
| MZ-630-001 | Main PCB Assembly | 1 | Complete assembly |
| MZ-630-002 | Power Supply PCB | 1 | Includes transformers |
| MZ-630-003 | Laser Pickup Unit | 1 | KSS-213C compatible |
| MZ-630-004 | Spindle Motor | 1 | DC brushless type |
| MZ-630-005 | Loading Motor | 1 | Stepper motor |
| MZ-630-006 | Front Panel Assembly | 1 | With display |
| MZ-630-007 | Main Transformer | 1 | Power supply |
| MZ-630-008 | Operation PCB | 1 | Button controls |
Printed circuit board layouts showing component placement and routing.
CAUTION! Observe ESD precautions when handling PCBs.
Complete wiring diagrams showing internal cable connections and harness routing.
Tip: Check connector orientation and locking mechanisms during reassembly.
Systematic troubleshooting guides for common service issues.
| Symptom | Possible Cause | Corrective Action |
|---|---|---|
| No power | Power supply failure | Check fuse, diodes, regulators |
| No disc recognition | Laser pickup fault | Clean lens, check RF signal |
| Poor playback quality | Servo alignment | Adjust focus/tracking |
| Recording failures | Laser power | Adjust recording power |
| Digital output issues | Clock synchronization | Check PLL circuit |
| Mechanical problems | Motor or mechanism | Check loading mechanism |
Important service information, updates, and common repair techniques.
Service Support: Contact Marantz technical support for additional assistance.