Category:
Aftermarket Car Audio Receivers
Era:
Likely late 2000s to early 2010s era, given the model numbers and typical Kenwood product cycles.
Key Competitors:
Pioneer, JVC, Sony, Alpine in the single-DIN head unit market.
Common Features For Era:
CD playback (potentially), AM/FM Tuner, Aux-in, CD Text, possibly MP3/WMA playback, basic pre-amp outputs.
Cr Suffix Meaning:
CR often denotes 'Chameleon' or 'Color' customization, suggesting adjustable illumination colors.
Manual Value Proposition:
Essential for diagnosing and repairing issues beyond simple fuse checks, particularly for custom installers and advanced DIYers.
Primary Coverage:
Service and repair of Kenwood KDC-135, KDC-135CR, and KDC-136 car audio receivers.
Secondary Coverage:
Troubleshooting, maintenance, and technical specifications for these specific Kenwood head units.
Estimated Pages:
50-150 (exact count not provided, typical for this type of service manual)
Audio Circuitry:
Detailed schematics and analysis of the audio amplification and processing circuits.
Power Supply:
Information on the internal power supply unit, voltage regulation, and protection circuits.
Display And Interface:
Coverage of the LCD display, button interfaces, and control logic.
Tuner And Receiver:
Details on the AM/FM tuner section, signal processing, and reception circuitry.
Cd Mechanism:
If applicable to these models (older units often had CD), details on the optical pickup, motor control, and error handling.
Connectivity Options:
Information on any auxiliary inputs, USB ports, or other external device interfaces.
Disassembly And Reassembly:
Step-by-step instructions for opening the unit, accessing internal components, and reassembling.
Troubleshooting Guide:
Systematic approaches to diagnosing common malfunctions and failures, often with symptom-based tables.
Component Replacement:
Guidance on replacing key components such as power ICs, audio processors, and interface boards.
Alignment And Calibration:
Procedures for aligning tuner sections or calibrating specific functions, if applicable.
Firmware Updates:
Information on updating or re-flashing firmware, if the models support it.
Diagnostic Level:
Intermediate to Advanced: Covers component-level diagnostics, schematic interpretation, and signal tracing.
Repair Scope:
Component-level repair, allowing technicians to replace faulty resistors, capacitors, ICs, and other discrete components.
Schematics Detail:
Includes full electronic schematics with component designators and voltage readings at key test points.
Part Identification:
Often includes parts lists with manufacturer part numbers for replacement components.
Features:
AM/FM Tuner, CD player (potentially), USB input (possibly for firmware or specific file types), AUX input.
Display Type:
Dot-matrix or segmented LCD display.
Features:
N/A (Not a vehicle feature)
Ports:
Rear AUX input, potentially USB port, RCA pre-outs for amplifiers.
Features:
Built-in amplifier (typically 15-20W RMS per channel), EQ settings, Bass Boost, Loudness.
General Maintenance:
Cleaning of external surfaces, ensuring proper ventilation, checking wiring connections.
Internal Fluids:
N/A (No user-serviceable fluids)
Common Failures:
Power supply failures (blown capacitors), display dimming or failure, intermittent audio, button responsiveness issues, CD mechanism failure (if applicable).
Basic Checks:
Check fuses (vehicle and internal if accessible), verify power and ground connections, ensure speaker wires are not shorted.
Manufacturer:
Kenwood Corporation (part of JVCKenwood Corporation)
Reputation:
Long-standing reputation for quality audio components and car electronics.
Product Line:
Part of Kenwood's entry-level to mid-range single-DIN receiver lineup from its era.
Production Period:
Estimated production likely spanned a few years, e.g., 2008-2012, a common cycle for such products.
