JVC PC-X110 - User Manual

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Summary

Safety Precautions

Leakage Current Check for Shock Hazard

Performing isolation check on exposed metal parts to ensure safety from electrical shock.

Important Safety Warnings and Responsibilities

Important safety standards and responsibilities for repairers and users.

Laser Product Safety Precautions

Laser Product Safety Warnings

Warnings and precautions related to the Class 1 Laser Product.

UK Mains Plug and Fuse Safety

Instructions regarding the mains plug, fuse replacement, and wiring for UK users.

Mains Lead Wiring Color Code

Guidelines for connecting wires in the mains lead according to color codes.

Important Safety Management Points

Power Transformer and AC Socket Safety

Details on controlling screw torque for the power transformer and securing the AC socket to the PCB.

PCB Creeping Distance and Solder Management

Ensuring proper creeping distance and spatial separation on the PCB, and managing solder protrusions.

Fuse Capacity and Flammable Component Safety

Confirming fuse capacity and ensuring flammable parts are lifted to prevent hazards.

Wire Management and Securing on PCB

Proper fixing and securing of wires on the PCB to prevent contact with live or moving parts.

Main Features Overview

CD Player and Remote Control Features

Describes the multi-function CD player with remote control and its programming capabilities.

Sound, Tuner, and Cassette Features

Highlights sound circuits, digital tuner, synchro-record, and double-cassette mechanism.

Timer, Clock, and Tape Playback Features

Details timer/clock operations, wake-up volume, and sleep timer functions.

Product Specifications

CD Player, Radio, and Antenna Specs

Technical specifications for the CD player section, radio frequencies, and antennas.

Tape Deck, Speaker, and General Specs

Details on tape deck system, speaker units, power supply, dimensions, and weight.

Instructions and Part Identification

Top Panel Parts Identification

Labels and descriptions of components on the top panel of the unit.

Front Panel Parts Identification

Labels and descriptions of components on the front panel, including buttons and display.

Front Panel Controls and Indicators

Main Controls: Power, Sleep, and Volume

Explains the functions of power, sleep, preset, tuner, and volume controls.

Audio Adjustments: Multi-Bass Horn and SEA EQ

Details the Multi-Bass Horn button and the SEA Electronic EQ function for sound adjustment.

Tape Deck Controls (Deck A)

Describes the tape mode switch, dubbing speed, and cassette operation buttons for Deck A.

Rear Panel Connections and Controls

Cassette Deck B Controls

Lists the cassette operation buttons for Deck B, including Play, Rewind, Fast Forward, Stop/Eject, and Pause.

External Connections Overview

Identifies speaker terminals, headphone jack, DC IN, AC IN, and telescopic antenna connections.

Remote Control Unit Operations

Remote Control Button Functions

Explains the functions of various buttons on the remote control unit for different modes.

SHIFT Button Functions

Details operations performed when holding down the SHIFT button in conjunction with other buttons.

Attaching and Detaching Speakers

Instructions on how to connect and disconnect the speakers from the main unit.

Speaker Detachment and Connections

Speaker Detachment Procedure

Step-by-step guide on how to detach the speakers from the main unit using the lock lever.

Audio and Power Cord Connections

Instructions for connecting speaker cords and other connections, emphasizing safety.

Playing Compact Discs

Disc Playback Procedure

Steps for playing a CD, including opening the disc holder, loading, and starting playback.

Adjusting SEA Electronic Equalizer

How to use the SEA (Frequency) button and VOLUME buttons to adjust EQ bands.

Stopping CD Playback

Method to stop CD playback by pressing the /CLEAR button.

CD Playback Control Functions

Temporary Stop, Disc Change, and Error Handling

Instructions on pausing, changing discs, and managing disc read errors.

Skip, Search, and Direct Access Playback

Procedures for navigating tracks and accessing specific positions on the disc using buttons or remote.

Programmed CD Playback

Programming and Initiating Playback

Steps to program up to 20 tunes in a desired order and start programmed playback.

Clearing and Confirming Program Details

Methods to clear programmed tunes and check the details of a programmed sequence.

Repeat and Random Playback Modes

Repeat Playback Modes (Single;All)

How to set repeat playback for a single tune or all tunes using the REPEAT button.

Random Playback and Intro Scan

Instructions for random order playback and playing the first 15 seconds of each tune.

Cassette Playback Operations

Steps for playing cassette tapes, including setting the tape switch and operating playback controls.

Cassette Relay Playback and Radio Reception

Relay Playback (Deck B to Deck A)

Procedure for setting up relay playback from Deck B to Deck A.

Radio Reception and FM Mode Settings

Steps for tuning radio, selecting FM modes (Auto/Mono), and using the tuner.

Tuner Operations

Seek, Manual, and Auto Preset Tuning

Methods for finding stations using seek, manual tuning, and automatic preset scanning.

Manual Preset Station Setting

Instructions for manually presetting stations using the remote control and preset buttons.

Preset Tuning and Recording

Preset Scan and Tuning Operations

How to use preset scan to cycle through stations and access saved presets.

Antenna Usage and Recording Basics

Guidance on using FM/MW/LW antennas and initial steps for recording.

Synchronized CD Recording

Synchronized Recording Setup

Procedure for starting synchronized recording from a CD to tape, including auto spacing.

Synchronized Recording Without Auto Spacing

How to perform synchronized recording without the automatic 4-second gap between tracks.

Dubbing and Radio Recording

Synchronized Start Dubbing (Deck B to A)

Steps for normal and high-speed dubbing from Deck B to Deck A with synchro-start.

Radio Recording and Tape Erasing

Instructions for recording radio broadcasts and erasing cassette tape content.

Clock Adjustment

Remote Control Clock Interface

Identifies the buttons on the remote control used for clock and timer functions.

Setting the Current Time

Step-by-step guide to set the current time on the unit using the remote control.

Timer Operations

Setting Timer Start and Stop Times

Detailed process for setting the timer's start and stop times using the remote control.

Setting Timer Volume and Fade-in

How to set the desired playback volume and configure fade-in for timer operations.

Timer Setting Checks and Playback;Recording

Checking Timer Settings

Procedure to check if the timer settings have been correctly applied.

Timer Playback and Recording Operations

How to perform timer playback and recording for tapes, broadcasts, and CDs.

Volume Fade-in and Sleep Operations

Volume Setting and Fade-in

Explanation of volume setting and the fade-in operation when the unit is switched on.

Sleep Operations and Cancellation

How to set and use the sleep timer to automatically turn off the unit and cancel the operation.

This document details the operation and maintenance of the JVC PC-X110 B/E/G/GI/EN CD Portable System, a versatile audio device designed for a range of listening and recording activities.

Function Description

The PC-X110 is a multi-function CD portable system featuring a CD player, a digital synthesizer tuner, and a double-cassette mechanism.

The CD player supports programmed play of up to 20 tunes, repeat play, random play, and intro play functions. It is also capable of playing 8-cm (3-3/16") "CD singles." The CD player's operation is managed through dedicated buttons for search/skip, play/pause, and stop/clear functions, with a display window showing track numbers, playback time, and various indicators for intro scan, random play, repeat play, music calendar, and program mode.

The digital synthesizer tuner offers 2-band reception (FM and AM/MW/LW) with a capacity for 30 preset stations (15 FM and 15 AM/MW/LW). Tuning can be performed via seek, manual, auto preset, or preset scan. The tuner display shows the band, radio frequency, and indicators for mono or stereo reception, as well as preset station numbers.

The double-cassette mechanism comprises Deck A for recording and playback, and Deck B for playback only. It supports metal and CrO2 tapes for enhanced tone quality. Key features include synchro-start dubbing (normal/high speed), relay playback from Deck B to Deck A, and synchro-record start for CD recording. Cassette operations are controlled by buttons for record, play, rewind, fast forward, stop/eject, and pause. A tape mode switch allows selection between CrO2/METAL (playback only) and NORMAL tape types. The dubbing speed switch offers HIGH and NORMAL options.

The system also incorporates a Multi-Bass Horn circuit for improved low-frequency sound reproduction, activated by a dedicated button. An SEA Electronic EQ (Frequency) button allows adjustment of electronic equalizer frequency bands (100 Hz/1 kHz/10 kHz) using the volume buttons.

A 24-key remote control unit (RM-RX110) provides comprehensive control over CD and tuner operations, including power on/off, volume control, SEA electronic equalizer, and Multi-Bass Horn on/off switching. The remote also features track/tune number buttons, timer functions, and various playback mode controls (intro, random, repeat).

Usage Features

The PC-X110 is designed for user convenience with several integrated features:

Timer/Clock Functionality: The device includes a timer/clock function that allows for timer on/off with preset volume, a wake-up volume setting with 25 different levels, and a sleep timer adjustable up to 120 minutes. The clock can be set using the remote control, with options for adjusting hours and minutes, and displaying AM/PM. Timer operations include setting start and stop times for playback or recording, and selecting the desired volume level for timer-activated events. The volume can fade in from zero to the preset level.

Sleep Operations: For users who wish to fall asleep to music, the sleep timer can be set for 30, 60, 90, or 120 minutes. The device will automatically switch off after the specified time. The remaining sleep time can be checked by pressing the SLEEP button, which also allows for resetting the sleep duration.

Speaker System: The unit comes with detachable speakers. They can be attached to the main unit by pressing them down into the speaker slots or detached by lifting them up while pressing a lock lever at the rear bottom. Speaker cords are provided, and it is recommended to place the speakers symmetrically in relation to the main unit for optimal sound. When connecting the speaker cords, the one marked with a line should be connected to the "-" terminal first, and any slack in the cords can be bundled into a designated space in the rear panel.

Recording Features:

Synchronized Recording with CD Player: This feature allows the CD player to automatically start playback when Deck A enters recording mode. Users can program tunes for recording and ensure the total playing time does not exceed the tape length. Non-recorded sections of approximately 4 seconds are automatically left between tunes. If the tape ends first, the CD player stops; if the CD player stops first, the tape continues running until manually stopped. An option for recording without automatic spacing is also available.
Recording from Radio: The device supports recording from radio broadcasts onto Deck A.
Dubbing (Synchro Start Dubbing): Normal and high-speed dubbing from Deck B to Deck A is possible. The system ensures that when Deck B stops, Deck A's pause mode is released, and playback begins. It is recommended to use the same type of tape in both decks during dubbing.
Automatic Level Control (ALC): During recording, the ALC circuit automatically optimizes the recording level, eliminating the need for manual adjustment.
Erase Function: When recording on a pre-recorded tape, the previous recording is automatically erased. A tape can also be erased without making a new recording by engaging the play and record buttons simultaneously after pressing the stop button.

Safety and Maintenance Features

The manual emphasizes several safety precautions and maintenance guidelines to ensure the longevity and safe operation of the PC-X110:

Safety Precautions:

Design Integrity: The product incorporates special hardware and circuits for safety. No unauthorized changes should be made to the original design, and replacement parts must be identical to the originals. Service should only be performed by qualified personnel.
Laser Product Safety: As a Class 1 laser product, the CD player uses invisible laser radiation. Safety switches prevent radiation emission when the CD holder is open. Users are warned against defeating these switches or direct exposure to the laser beam. Disassembly of the laser unit is not recommended; the complete unit should be replaced if necessary.
Electrical Safety: The manual highlights the importance of proper lead routing and dressing to prevent electric shock and fire hazards. After reassembly, a leakage current check is mandatory to ensure the product is safe to operate. The AC socket has specific marking requirements (HSC1466) to prevent circuit board damage. Proper creeping and spatial distance for primary and secondary terminals on the print circuit board must be maintained. Fuse capacity indications must be confirmed before installation.
Heated Parts: Specific components (Diodes D996-D999, IC101, Transistors Q901, Q921) are identified as heated parts, and flammable parts must be lifted away from them.
Wiring Management: Single wires on the printed circuit board must be fixed with spacers of bond. Wires must be clamped or secured to prevent contact with live, moving, hot, or sharp parts.
Mains Supply (UK Specific): For the UK market, specific instructions are provided regarding the mains plug, fuse replacement, and wire coloring (Blue to N/Black, Brown to L/Red) to ensure correct connection and prevent shock hazards.
Environmental Conditions: The unit should not be used in excessively high or cold temperatures (recommended range: 5°C to 35°C).

Maintenance Guidelines:

Disc Handling: If a disc is dirty, scratched, or loaded upside down, an error indication will appear. Users should clean the disc or reinsert it correctly. After playback, the disc should be unloaded, and the disc holder closed.
Mistracking: If mistracking occurs during play, the volume should be lowered. Mistracking can also occur due to strong shocks or vibrations, such as those experienced in a moving car.
Antenna Usage: The built-in ferrite core antenna for AM/MW/LW reception may pick up interference from nearby television receivers.
Tape Care: When recording, ensure the safety tab on the cassette tape is not broken off.
Timer Setting: The current time must be set correctly before using timer recording or playback functions. After setting, the timer start and stop times, and the required frequency for radio recording, should be checked.
Power Off During Tape Operation: If the power is turned off while the tape is running, cassette operation buttons may not return to their original positions. The STOP/EJECT button should be pressed to stop the tape before turning off the power.
Dubbing Mode: Avoid operating any button on Deck B during recording or dubbing from Deck A.

This comprehensive manual ensures users can effectively operate and maintain their JVC PC-X110 B/E/G/GI/EN CD Portable System, understanding both its capabilities and the necessary safety measures.