Parts/Service for DVD-C900

Parts/Service for DVD-C900

Brand: YAMAHA

Category: Audio/Video

Document Type: Parts/Service

Language: EN

Uploaded: Nov. 21, 2025, 7:28 p.m.

Warranty Information

None

This manual details service procedures for the YAMAHA DVD-C900 DVD Player. It covers component identification, disassembly, reassembly, and troubleshooting. Key sections include:

  • To Service Personnel: Outlines critical components, ESD prevention, and safety precautions.
  • Specifications: Lists audio and video specifications, power requirements, and dimensions.
  • Rear Panels: Identifies connections for different models (U, R, T).
  • Laser Diode Precautions: Emphasizes safety when working with the laser pickup.
  • Internal View & Disassembly: Provides an overview of internal components and step-by-step disassembly procedures.
  • Adjustment Procedures: Details how to adjust the disc motor tilt and other settings.
  • Test Mode: Explains how to enter and operate the unit in test modes for diagnostics.
  • Troubleshooting: Offers a flowchart-based guide to diagnose and resolve common issues based on error logs and symptoms.
  • Block Diagram & Schematic Diagram: Visualizes the internal architecture and circuit connections.
  • Parts Lists: Provides comprehensive lists of electrical and mechanical parts with their respective part numbers.

General Precautions: Adherence to ESD prevention, laser safety, and correct part replacement is stressed throughout the manual.

Troubleshooting and error codes

Troubleshooting Category Troubleshooting Steps Related Components/Checks
Traverse limit switch fails to turn on. Is traverse feed/return operation available in TEST mode? YES: Traverse drive IC (IC1) or ADSC (IC7) is faulty. NO: Traverse limit switch circuit or CPU (IC44) is faulty.
XX is FE or other than FF. XX is FE or other than FF.
DA offset measurement failure Task ID = 05, Error log= XX07 ADSC (IC7) is faulty.
DMON failure (18T/22T mode shift failure, CLV mode shift failure) Task ID = 05, Error logs = XX15, XX34, XX57, XX5C, XX5E, XX5F XX is FE or other than FF. Does turntable turn? YES: Drive IC(IC2) or spindle motor is faulty. NO: ADSC(IC7) or FEP(IC6) is faulty.
Focus ON failure Task ID = 05, Error logs = XX2A, XX59 XX is FE or other than FF. Is disc dirty and scratched? YES: Check with another disc. NO: Does objective lens move up and down? YES: ADSC(IC7) or drive IC(IC1) is faulty. NO: FEP(IC6) is faulty.
Is focus error signal output at test point FE? YES: FEP(IC6), ADSC(IC7) or PU is faulty.
When replacing PU, clear laser ON time, error log and event log.
Tracking failure Task ID = 05, Error logs = XX3A, XX5D XX is FE or other than FF. Is disc dirty and scratched? YES: Check with another disc. NO: Is tracking error signal output at test point TE? YES: FEP(IC6) is faulty. NO: Is tracking drive signal output at TRDRV(IC7)? YES: ADSC(IC7) is faulty. NO: Is output observed at drive output terminals? YES: Drive IC(IC1) is faulty. NO: FEP(IC6), ADSC(IC7) or PU is faulty.
Gain learning failure Task ID = 05, Error log = XX45 XX is FE or other than FF. Is disc dirty and scratched? YES: Check with another disc. NO: FEP(IC6), ADSC(IC7) or PU is faulty.
Equalizer adjustment failure Task ID = 05, Error logs = XX46, XX4A, XX4B XX is FE or other than FF. Is disc dirty and scratched? YES: Check with another disc. NO: ADSC(IC7) or PU is faulty.
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