This document is a service manual for the Clarion DXZ828R (PE-2524E-A) car audio system. It provides detailed information for engineers regarding repair, inspection, and technical specifications.
Function Description
The Clarion DXZ828R is an RDS-EON FM/MW/LW Radio CD Combination unit. It features control capabilities for various external devices, including DVD, MD, and CD changers, as well as DSP, EQ, DAB, and TV tuners.
Important Technical Specifications
General:
- Output power: 31 W x 4 (DIN45324, B=14.4 V)
- Power supply voltage: 14.4 V DC (10.8 V to 15.6 V allowable), negative ground
- Power consumption: Less than 15 A
- Speaker impedance: 4Ω (4Ω to 8Ω allowable)
- Auto antenna rated current: 500 mA or less
- Weight: Main unit 1.6 kg, Remote control unit 30 g (including battery)
- Dimensions: Main unit 178(W) x 50(H) x 155(D)mm, Remote control unit 44(W) x 110(H) x 27(D)mm
Radio Section:
- Tuning system: PLL synthesizer tuner
- Receiving frequencies:
- FM: 87.5 to 108 MHz (0.05 MHz steps)
- MW: 531 to 1602 kHz (9 kHz steps)
- LW: 153 to 279 kHz (3 kHz steps)
CD Player Section:
- System: Compact disc digital audio system
- Frequency response: 5 Hz to 20 kHz (± 1 dB)
- Signal to noise ratio: 100 dB (1 kHz) IHF-A
- Dynamic Range: 95 dB (1 kHz)
- Distortion: 0.01%
Usage Features
The DXZ828R offers several advanced features for enhanced user experience:
- RDS-EON Receiver: Provides advanced radio data system functionalities, including enhanced other networks (EON).
- External Device Control: Acts as a controller for DVD, MD, and CD changers, DVD decks, DSP, EQ, DAB, and TV tuners, offering a centralized control interface.
- High Quality CD-Deck: Equipped with a 24-Bit D/A Converter for superior audio fidelity.
- BEAT EQ (3-Band P.EQ): Allows for personalized sound adjustments with a 3-band parametric equalizer.
- Detachable Motorized Sloping Console: Features a fully detachable motorized front panel with an aluminum finish.
- Rotary Encoder and Dual Key Illumination: Provides intuitive control with a rotary encoder and illuminated keys for ease of use in various lighting conditions.
- Line Level Output: Offers 4.4 Volt/6 Gold Plated RCA Line Level Outputs for high-quality audio signal transmission to external amplifiers.
- AUX Input: Includes a 2-Channel RCA AUX Input with 3 Level Adjustments, allowing connection of external audio sources.
Maintenance Features
The manual provides crucial guidelines for engineers during repair and inspection:
- Use Specified Parts: Emphasizes using only parts with specified safety features and equivalent characteristics to prevent fire, voltage issues, and ensure product liability.
- Proper Reassembly: Instructs to place parts and wiring back in their original positions, ensuring proper circuit construction, insulation, and routing to prevent damage from heat or high voltage.
- Safety Check After Repair: Requires verification that screws, parts, and wires are securely in place and that no secondary problems exist around repaired areas.
- Battery Disconnection: Advises disconnecting the car battery terminal after turning off the ignition key before making wiring connections to the automobile to prevent short circuits and fire.
- Chip Handling: Recommends not reusing removed chips, even if they appear normal, and replacing them with new ones. Special care is advised for tantalum capacitors due to their heat susceptibility.
- Flexible PWB Handling: Provides instructions for working with flexible PWBs, including maintaining a soldering iron tip temperature around 270°C, avoiding repeated application of the iron tip to the same patterns, and not applying force.
- Power Off During Disassembly: Stresses turning off the unit during disassembly and parts replacement and rechecking all work before applying power.
- Optical Pickup Cautions:
- Laser Safety: When checking the laser optical diode, maintain a distance of more than 30cm from the lens to prevent eye damage.
- Electrostatic Discharge (ESD) Prevention: Warns against electrostatic charge damage to the laser diode. Engineers should avoid static charges on clothes and body, and discharge static electricity before handling the optical pickup.
- Laser Diode Shorting: States that laser diode terminals are shorted for transportation to prevent ESD damage. This short circuit must be opened after replacement and re-shorted when removing the pickup from the mechanism.
- Actuator Handling: Advises keeping magnetic materials away from the actuator to prevent changes in its characteristics and ensuring no foreign substances enter the ventilation slots.
- Lens Cleaning: Provides instructions for cleaning the optical lens using a small amount of isopropyl alcohol on lens paper.
Error Displays and Troubleshooting:
The manual includes a section on error displays (e.g., ERROR 2, ERROR 3, ERROR 6, ERROR H) with corresponding causes and measures. Common issues like power not turning on, no sound output, unresponsive buttons, inaccurate display, CD loading problems, and poor sound quality are addressed with specific troubleshooting steps.
Adjustments:
An S-meter adjustment procedure is detailed for inputting a 98.1MHz/30dBμ (400Hz-MOD 30%) signal, entering test mode, and adjusting the LCD indicator reading to [30----00] (3.0V± 0.2V) using VR1 on the tuner pack.
Note: The manual explicitly states that PWBs are not supplied with component parts; repairs should be done at the component level. Parts not mentioned in the service manual are not supplied. CD-ROM discs cannot be played by this unit. The appliance contains a "CLASS 1 LASER PRODUCT," and users are advised to consult an authorized service station for any trouble.
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