Panasonic SC-HC30EF - User Manual

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Overview

Function Description
Important Technical Specifications
Usage Features
Maintenance Features

This document describes the Panasonic SC-HC30EF and SC-HC30EG compact stereo systems, which are available in Black (K), Silver (S), and Pink (P) (SC-HC30EG only) color types. It serves as a comprehensive guide for service personnel, covering technical specifications, operational procedures, and maintenance instructions.

Function Description

The Panasonic SC-HC30EF/EG is a compact stereo system designed for audio playback from various sources, including CDs, FM/AM radio, and external devices like iPods or iPhones. It features an amplifier section, a tuner section, and a disc section, all integrated into a sleek, compact design. The system is equipped with a self-diagnostic mode and a doctor mode for troubleshooting and reliability checks, making it suitable for both end-users and service technicians.

Important Technical Specifications

Amplifier Section:
- RMS Output Power Stereo Mode (Front Ch, both channels driven): 20 W per channel (6 Ω), 1 kHz, 10% THD.
- Total RMS Stereo Mode Power: 40 W.
- Phone Jack: Stereo, 3.5 mm (1/8”) jack.
- Output Level (CD, 1 kHz, -20 dB): Max. 0.2 mW +0.2 mW, 32 Ω.
- Aux (Rear) Terminal: Stereo, 3.5 mm jack.
Tuner Section:
- Preset Memory: FM 30 stations, AM 15 stations.
- Frequency Modulation (FM) Frequency Range: 87.50 MHz to 108.00 MHz (50 kHz step).
- Antenna Terminals: 75 Ω (unbalanced).
- Amplitude Modulation (AM) Frequency Range: 522 kHz to 1629 kHz (9 kHz step) / 520 kHz to 1630 kHz (10 kHz step).
Disc Section:
- Discs Played [8 cm or 12 cm]: CD-Audio (CD-DA), CD-R/RW (CD-DA, MP3), MP3 (MPEG-1 Layer 3, MPEG-2 Layer 3).
- Pickup Wavelength: 795 nm.
- Laser Power: CLASS 1.
- Audio Output (Disc) Number of Channels: FL, FR, 2 channel.
Speaker Section:
- Type: 1 way, 1 speaker system (Passive Radiator).
- Speaker Unit(s): Front Speaker (6.5 cm Cone type x 1 / channel), Passive Radiator (8 cm x 2 / channel).
- Impedance: 6 Ω.
General:
- Power Supply: AC 220 V to 240 V, 50 Hz.
- Power Consumption: 31 W.
- Dimensions (W x H x D): 500 mm x 201 mm x 102 mm (D = 69 mm minimum).
- Mass (Weight): Approx. 2.8 kg.
- Operating Temperature Range: 0 °C to +40 °C.
- Operating Humidity Range: 35% to 80% RH (no condensation).
- Power Consumption in Standby Mode: 0.09 W (approx).

Usage Features

The system offers intuitive control through both the main unit and a remote control. Key buttons on the remote control include:

Standby/Switch [ ]: Turns the unit on/off, or puts it into standby mode.
[SLEEP]: Sets a sleep timer.
Numeric buttons [1-9, 0, >10]: Selects tracks, radio presets, or enters numeric values.
[ ] (CD PLAY/PAUSE): Starts or pauses CD playback.
[ ] (CD OPEN/CLOSE): Opens or closes the CD door.
[■] (STOP): Stops playback.
[ ] (REW), [ ] (FWD): Rewinds or fast-forwards tracks.
[VOL -, VOL +]: Adjusts volume.
[MUTE]: Mutes the sound.
[D.BASS]: Activates or deactivates the D.BASS function.
[AUX]: Selects the AUX input source.
[iPod]: Selects the iPod/iPhone input source.
[FM], [AM]: Selects FM or AM radio.
[PROGRAM]: Enters program mode for CD or radio.
[DISPLAY]: Changes display information.
[OK]: Confirms selections.
[SURROUND]: Activates or deactivates surround sound.
[INPUT LEVEL]: Adjusts input level for external units.
[FM MODE]: Changes FM reception mode.

The system supports CD-R/RW playback, including MP3 files, with specific notes on compatibility and limitations (e.g., maximum number of tracks, albums, and folders). It also features an iPod/iPhone docking station, allowing users to connect and play audio from their Apple devices.

Maintenance Features

The service manual provides detailed instructions for maintenance and repair, emphasizing safety precautions:

Safety Precautions: Includes general guidelines for servicing, leakage current checks (cold and hot), caution for fuse replacement (using specified type T1.6AL 250V), and information on protection circuitry. Critical safety parts are marked and must be replaced with manufacturer-specified components.
Electro Static Discharge (ESD) Prevention: Detailed steps to prevent damage to electrostatically sensitive devices, such as touching earth ground, using conductive surfaces, grounded soldering irons, and anti-static solder removers.
Laser Diode Precaution: Warnings regarding invisible laser radiation from the pickup lens (795 nm, 100 μW/VDE) and instructions not to disassemble the pickup unit, adjust variable resistors, or look directly at the focus lens with optical instruments.
Lead Free Solder (PbF) Caution: Information on the use of lead-free solder in manufacturing and specific instructions for repair work, including higher melting points and recommended soldering iron temperatures (350±30 °C).
Handling Precaution for Traverse Unit: Guidelines to prevent damage to the optical pickup unit from electrostatic discharge or physical shock, including short-circuiting flexible cables with a short pin or clip during handling.
Disassembly and Assembly Instructions: Comprehensive flowcharts and step-by-step guides for disassembling and assembling various components, including the stand unit, CD door assembly, net frame assembly, front panel block, top ornament unit, button P.C.B., passive radiators, front speakers, traverse unit, CD servo P.C.B., headphone/AUX P.C.B., PCB block, SMPS P.C.B., tuner P.C.B., fan unit, panel P.C.B., IR P.C.B., iPod/iPhone switch P.C.B., motor P.C.B., door switch P.C.B., interlock switch P.C.B., motor assembly, and iPod/iPhone P.C.B.
Replacement of ICs: Specific instructions for replacing switching regulator ICs (IC5701), voltage regulator ICs (IC2910), diode (D5802), and power amplifier IC (IC1), including applying grease to heatsinks and ensuring proper seating and soldering.
Service Position: Procedures for checking and repairing various P.C.B.s (Panel, CD Servo, SMPS, Horizontal Main, Vertical Main) using extension cables and tape to keep switches depressed.
Self-Diagnostic and Doctor Mode Setting:
- Self-Diagnostic Mode: Allows checking for unusual/error codes from memory. Entry involves turning on the unit, pressing and holding [■] for 2 seconds, followed by [ ] on the unit. Error codes are displayed for CD mechanism, iPod, and power amplifier issues.
- Doctor Mode: Provides detailed checks of various items and displays EEPROM and firmware versions. Entry involves turning on the unit, pressing and holding [■] on the main unit while pressing [4] and [7] on the remote control. Doctor mode functions include FL display test, volume setting, mechanical sliding panel reliability test, CD traverse unit test, and CD auto adjustment display.
Sales Demonstration Lock Function Mode: Instructions for setting and canceling a sales demonstration lock, which disables certain functions and displays "LOCKED" on the main unit.
Wiring Connection Diagram: Provides a visual guide for internal wiring.
Schematic Diagram Notes: Explains symbols and conventions used in schematic diagrams, including voltage and signal lines, and identifies important safety components.
Printed Circuit Board Layouts: Detailed diagrams of various P.C.B.s (CD Servo, Vertical Main, Horizontal Main, Panel/Button/Headphone/AUX/Motor, Tuner/IR/iPod/iPhone Switch, Door Switch/Interlock Switch/SMPS) for component identification.
Terminal Function of ICs: Lists the pin numbers, marks, I/O types, and functions of key integrated circuits (IC801, IC7001, IC7002).
Exploded View and Replacement Parts List: Detailed diagrams and lists of all mechanical and electrical replacement parts, including screws, cables, speakers, and P.C.B.s, with safety references and quantity remarks.