3002751 3-786-912-51(1 SONY WUTIMIMIM 220772: LBTV925CD

Stereo Component System

Operating Instructions

vist: LBT-V925CD

© 1989 by Sony Corporation


To prevent fire or shock hazard, do not expose the unit to rain or moisture.

To avoid electrical shock, do not open the cabinet. Refer servicing to qualified personnel only.


The mains lead plug of this apparatus is 2-pin type designed to be connected only to other apparatus equipped with a suitable socket outlet.

lf the plug cannot be used in this way, cut off the plug and fit an appropriate one as follows:

IMPORTANT The wires in this mains lead are coloured in accordance with the following code:

Blue: Neutral

Brown: Live As the colours of the wires in the mains lead of this apparatus may not correspond with the coloured markings identifying the terminals in your plug proceed as follows: The wire which is coloured blue must be connected to the terminal which is marked with the letter N or coloured black. The wire which is coloured brown must be connected to the terminal which is marked with the letter L or coloured red.


To prevent shock hazard, do not insert the plug cut off from the mains lead into a socket outlet. This plug cannot be used and should be discarded.

i ~ ] DANGER

Invisible laser radiation when open and interlock failed or defeated. Avoid direct exposure to beam.


Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure.

Laser component in this product is capable of emitting radiation exceeding the limit for Class 1.

Note This appliance conforms with EEC Directives 76/889 and 82/499 regarding interference suppression.

This Compact Disc player is‘ classified as a CLASS 1 LASER product.

The CLASS 1 LASER PRODUCT label is located on the rear exterior.



Table of Contents

Getting Started

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INStAIIATION ects hha ceed, dares Connections PartS IG @ntitiCation -aic.cesccitsie ss caviseccetsceesstiveessitegncosesbededeoeseee AUdIO AGJUSTMENL 0... eee ec ccceeeceteeeete cere test ree eenseeneeeeerseeesserena

Using Your Stereo PLAYING A CISC: fo. seci. ap iyaieotettes doveares sa caesvaaaateveenest as cnenzege tinea Playing repeatedly Repeat play... eee eecescceeeeeeees Playing in a random order Shuffle play 0.0... eee Playing in a desired order - Program play ON CUSTOM) TIES: .:.3:ccessdsecndcedi aie dan dtl ienteeiieceriscarittless Keeping the program in memory

Program bank FUNCTION .0.... eects e cee tece crete teeeeeeeee 25 Writing a comment about a disc - Disc memo function ..... 26 Giving a disc indexes as you want

Custom index FUNCTION oo... cece eee eseereeerneceeeseteneeens 28 Broadcast reception

Tape playback Tape recording Recording from CD TADSAUODING cscs seers ds Heectaeee led cavnectesee detactniye eaasieee Using the preamplifiers sound manipulation features ....... 49 Adjusting the sound using the digital

PArAMEtriC CQUALIZET oe cee cece cee te tte tees eens enenetereeey 53 Using the digital presence surround effects ......... cee 55 Providing low-volume sound with a feeling of power

Digital dynamic SOUN 0.0... eee cece ee tneee sees ceeneeeeeeeaes 57 Digital SOUNd MENU 0... eeeteeteeseteeeeaeeeeeseeseesatseeseteaesatseneees 58 Using the digital sound menu settings to adjust the

SOUNGsieheck aici livectescnstens teachetesanseess seceaane tees feat sbeiets 60 Storing your individual sound effect settings

Se LISOPIMOMONY: ssc.ciccecsceccshids celbval secs cauceyecodsedgevectedasesnnscs 61 Combining video images with sounds from other sources

and performing Video Editing ....... ccc seeeeeeeeteneeees 63 MiCrOPhONE MIXING .......:..cceceeceeceeeecescceceseaeenersnteceeeeeeenseteseeeers 64 Maintaining Your Stereo MAINTENANCE oo. ce eee cece eee ecceeeaecneeeteeea ee ceeenaueeneeeeeeenseeseeneeees 65 Troubleshooting Troubleshooting QUuide «0.2.0... ees ceereenetetesseeeeeeaareeteneeeee 66

Getting into the Details SPe@cifiCAtiOMS .-:.:.<desssss.scccees bleed ceateddeedscescateastduvescveetedenseentens 67

Using the Remot Commander How to use the remote control unit (Preamplifier SCCtION) ..........ceeeeeeeeeeereeeeeneees Back cover

System Component

Composition .

The LBT-V925CD comprises the following components.

Components Model name Tuner ST-V925E Preamplifier TA-V925EE Power amplifier TA-V925NE CD player CDP-V925E Cassette deck TC-V925E Turntable PS-V901 Speaker system APM-181ES

For the operation of PS-V901 turntable and APM-181ES speaker system, see the operating instruction of those equipments.


On safety

« Operate the unit only on 240V AC, 50 Hz.

¢ The stereo system is not disconnected from the AC power source as long as it is connected to the wall outlet, even if the stereo system itself has been turned off.

e Unplug the stereo system from the wall outlet if it is not to be used for an extended period of time. To disconnect the cord, pull it out by grasping the plug. Never pull the cord itself.

e The nameplate indicating operating voltage, power consumption, etc. is located at the rear.

e Should any solid object or liquid fall into the component, unplug the stereo system and have the component checked by qualified personnel before operating it any further.

If you have any question or problem concerning your stereo system, please consult your nearest Sony dealer.



Digital drive preamplifier for creating vibrant sound The preamplifier features a Digital Parametric Equalizer, Digital Presence Surround, and Digital Dynamic Sound. Enabling you to mold the musical sound to your individual taste. Also, you can easily adjust the music to your taste by selecting from various patterns (up to 200) which combine these three functions and are stored in the preamplifier’s preset memory.

Digital parametric equalizer for sound control

This function employs digital processing to enable you to adjust the quality of the sound by raising and lowering the levels of specific frequency ranges.

Digital presence surround which allows you to select the surround system to match the music genre

This function features three types of surround music, movie, and simulated to allow you to match the surround system with the genre of the sound source and reproduce the sound as if you were actually experiencing it in a concert hall or movie theater. In addition, the amount of reverberation can be varied in order to reproduce sound with a sense of presence as if it were being listened to ina concert hall.

Digital dynamic sound for providing low-volume sound with a feeling of power

When listening at low volume levels, this function raises the level of hard to hear sounds and provides the sound witha

good overall balance.

Abundant input and output jacks for handling digital transmission and a wide variety of AV equipment

This preamplifier is provided with optical inputs for connecting up to 2 digital components such as CD players and DAT decks, and video inputs for connecting up to 3 video components such as VTRs and video disc players.

Power Amplifier

Independent power amplifier

The power amplifier and the preamplifier are designed as independent units in the amplifier section to ensure high- quality digital sound.

80W + 80W high-power output Plenty of speaker-driving power with power to spare.

Features .

CD Player


Custom file function for facilitating disc management With this feature, you can file music programs, disc names, and indexes, enabling you to recall programs at any time.

1-20 numeric buttons and > 20 button for quick tune selection

With these buttons, you can directly specify the number of a desired tune or track.

Music calendar for providing playback status information at a glance

The track number of the currently playing tune or programmed tune can be seen at a glance.

Time edit function for facilitating tape-making

With this function, you can automatically create a music program which optimally matches the tunes on a CD with the tape recording time.

Optical digital transmission system for producing high sound quality

This CD player employs a digital transmission system which uses optical fiber cables to maintain sound purity.

Cassette Deck

The Dolby HX PRO* system which improves the linearity of the tape’s high-range response during recording.

B and C type Dolby NR* system to reduce tape hiss noise.

Synchro start function for facilitating recording from compact disc

This function allows recording from compact disc to be started and stopped by only operating the cassette deck.

Fade edit recording function for making tapes without abrupt mid-tune breaks

When recording from compact disc, this function automatically fades out the tune at the end of the tape and re-records interrupted tunes.

Preamplifier-processed sound recording Sound can be recorded after it is processed by the equalizer, surround system, and/or dynamic sound system.

CCLA function for automatically determining the recording level

The recording level is computer adjusted to optimally match the tape.

Dolby noise reduction and HX Pro headroom extension manufactured under license from Dolby Laboratories Licensing Corporation. HX Pro originated by Bang & Olufsen.

“DOLBY”, the double-D symbo! DN] and “‘HX PRO” are trademarks of Dolby Laboratories Licensing Corporation.

A quartz locked digital synthesizer system allows precise tuning. A total of 30 FM/AM stations can be preset in 3 memory pages (A, B and C).


e Demo mode for automatically demonstrating various system functions.

« Remote control unit for providing free and unrestricted control of the system.

Matic lifela

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¢ To prevent internal heat build-up, place the unit ina location with good air circulation. Do not place it ona soft surface, such as a rug that would block the ventilation holes on the bottom.

e Do not install the unit in a focation: near heat sources subject to direct sunlight, mechanical vibration or shock exposed to rain, moisture, dirt or dust.

Installing Batteries


Install two R6 (size AA) batteries in the supplied remote commander for remote control operation.

Battery life

About half a year of normal operation can be expected when using the Sony SUM-3 (NS) batteries.

When the batteries are exhausted, the commander will not operate the unit. In this case, replace the batteries with new ones.

To avoid battery leakage

When the commander is not to be used for a long period of time, remove the batteries to avoid damage caused by battery leakage and corrosion.

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Notes on Connection

e Connect the AC power cord last. Make sure the power e Fully insert cable connectors into jacks. Loose connections switch is off. may cause hum or noise.

e Cord plugs and jacks are color coded. Red plugs and jacks are for the right channel (R) and white ones are for the left channel (L).

AU BUS connecting cord

Cj CG) ST-V925E



To disconnect



© Connecting the left and right speakers

Right speaker \ Left speaker


G @

Second speaker system

3] Connecting the FM antenna (4 ) Connecting the AM antenna If necessary,

attach to a wall

Supplied AM loop antenna

For better reception For better reception Extend a 6- to 15-meter insulated wire out of doors.

{EC standard socket connector


@ Connecting the CD player DIGITAL IN automatically detects and adjusts to the sampling frequency (32 kHz, 44.1 kHz or 48 kHz) of the digital source connected.



Remove the protecting Plug.

A-V925EE oS 2)

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(ws) s) foal

>-SDp-VO25E Supplied optical cord

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Notes on the digital optical cord

e Do not bend the cord. Be careful especially while e Insert the protection plugs in the jacks if the cord is not connecting the cord. connected. e Make a Circle of more than 15 cm (6 in.) in diameter when e Make sure that the plugs and the jacks are clean.

storing the cord. 7

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@ Connecting speakers for surround sound

Right speaker TA-V925NE Left speaker

Be sure to connect both left and right speakers. Sound does not come out from the surround speakers when only one speaker is connected.

Connecting the AC power






ae TA-V925NE || |S Qdio9 oh i OOOO Ep" rene, tO @ wall outlet

The unswitched socket outlet remains live, independent CAUTION of the power switch setting, at all times when the unit is Do not connect any electrical home applicance, such as connected to an AC power supply. an electric iron, fan, TV or other high-wattage appliance Be sure to connect the AC power cord of another audio to the AC OUTLET. component whose power consumption is less than 200


/f you operate your tuner with the CD player turned on: Noise may interfere with radio reception. Therefore, always turn off the power to the CD player when it is not in use.


Parts Identification


a) fol fe NI | fol fb] | NOG


POWER switch


Display window


AUTO (automatic) TUNING button NEMORY button

BAND selector

Remote control sensor

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POWER switch

CLEAR button

Function buttons and indicators Display window

VOLUME control

BALANCE control

MIC (microphone) LEVEL control MIC (microphone) input jack USER MEMORY buttons

Digital CONTROL MODE buttons Digital Parametric EQUALIZER curve operation buttons DIGITAL DYNAMIC SOUND selector and indicators DIGITAL PRESENCE SURROUND selector and indicatos DIGITAL EFFECT switch and indicator EQUALIZER RECORDING switch and indicator DISPLAY button


Audio Adjustment


Selectings the Speaker System Al

This amplifier provides for two speaker systems system A and system B ~ which can be selected separately or simultaneously using the SPEAKERS selector.

To drive speaker system A: Set to A.

To drive speaker system B: Set to B.

To drive both speaker systems A and B: Set toA + B For private listening with headphone connected to the HEADPHONES jack: Set to OFF.

Note: Speaker systems A and B are series connected. No

sound will be heard if SPEAKERS selector is set to A + B when only one speaker system is connected.








Volume Adjustment B |

Turn the VOLUME control clockwise to increase the volume. Turn it counterclockwise to decrease the volume.

Before turning ON the power, turn the VOLUME control fully counterclockwise to avoid damage to the speakers.

Balance Adjustment

Adjust the BALANCE contro! to correct stereo imaging when the speaker position is not symmetrical.

To Make the Power Amplifier Peak Power Meter Easy to Read

When listening at high votume levels | When listening at low volume levels To turn off the meter display Set the METER RANGE control to the Set the METER RANGE contro! to the Set the METER RANGE contro! to the 100W position. 10W position. OFF position.




X OFF ° OFF ci) Y



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Peak power is indicated by scales on both | sides of the meter. | center of the meter.


To make fine adjustments to the quality of the sound When the OPERATION indicator is green Make adjustments using the equalizer, dynamic sound, and The system is operating normally. surround (see page 53).

When the OPERATION indicator is red

To record sound processed by the preamplifier The OPERATION indicator will light up red for a few seconds You can record sound after it has been processed by the after the power is turned on or when an abnormality occurs. equalizer, dynamic sound, and/or surround (see page 39). To protect the speakers. No sound is output when the

indicator is red.


Playing a Disc

Before playing a disc, turn on the amplifier and set the input selector to the CD player position.

Playing the Entire Disc

To stop play

To stop for a moment during play, press MH. Press again to resume play.

To stop play, press BB.

To stop play and take out the disc, press &.

If “SHUFFLE”, “PGM”, “SINGLE”, or “C.INDEX” is displayed in the window Press CONTINUE/SINGLE.

If “DISC/MEMO” appears in the window There is no disc in the tray.





with the printed side up

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To play an 8cm (3-inch) CD

Place it on the inner circle of the tray. If the disc is provided with an adaptor, first remove it. Do not put a normal CD (12cm/5-inch) on top of an 8 cm CD.

To display the total number of selections and total playing In step 4, press & instead of >.

/f you turn on the power with a disc in the tray

Piay begins automatically from the beginning of the disc. By connecting a commercially available timer, disc play can be started at any desired time.

: Caution or on adjusting volume. ee aa Do not tu up the volume while listening to a S poaIon with very. low level signals or no audio Signals. lf you. do, a

the speakers may be damaged when.a peak level. portion is played.

Notes on handling discs L ear) » To keep a disc clean, handle the disc by its edge. Do not aia touch the surface.

+ Do not stick paper or tape on the disc. ‘Jafsfets|

« Do not expose the disc to direct sunlight or heat sources such as hot air ducts, or leave it in a car parked in direct sunlight as there can be a considerable rise in temperature.

« After playing, store the disc in its case.

Information display

Each time you press TIME/MEMO during play, the display changes to give you the following information.

[A] Elapsed playing time

[B| Remaining time in a selection

If the current selection number is over 20, ‘‘----” is displayed.

[C] Remaining time and number of tunes on the disc

If you have stored a disc memo The stored disc memo will be displayed, following the display of the remaining time of the disc.


Playing a Disc

Locating a Particular Selection

You can locate the beginning of a desired selection during play or pause.

To locate sequentially

To locate the beginning of the current selection or a preceding selection

« Press k@4 as many times as required.

« Keep K€ pressed to skip selections.

To locate the beginning of a succeeding selection

« Press Pl as many times as required.

e Keep ®I pressed to skip selections.

To locate directly

Press one of the numeric buttons (| 1| to |20 |) to enter the

desired selection number.

If the selection number is greater than 20, use the [>20] and

to [10] buttons. functions as the figure 0.

e.g. To play from selection No.22 Press | >20|[2 To play from selection No.30 Press [>20]/3][10

Locating a Particular Point in a Selection

You can locate a particular point on the disc during play.

To search quickly while monitoring the sound

To go forward at high speed

Keep ® pressed during play and release at the desired point.

To go backward at high speed

Keep <4 pressed during play and release at the desired point.

To search quickly by observing the display

Press Ill, then keep <4 or pressed. The search speed willincrease, but there will be no sound. Find the desired point by observing the display.

Press Il again at the desired point.

When OVER is displayed

If you continuously press at the end of the disc, OVER appears in the window. Press <4 or kf to return the indication to normal. If you continuously press <4 at the beginning of the disc, play begins automatically from the first selection.


inserting a Blank Space between Selections - Auto Space

You can insert a 3-second blank space between each selection. The blank space enables you to locate selections when using a tape deck with an automatic selection search function.

Before starting play, press AUTO SPACE so that “AUTO SPACE” is displayed in the window.

A blank space of approximately 3 seconds will be inserted between each selection.

To cancel the auto space function Press AUTO SPACE so that “AUTO SPACE” disappears from the window.

Playing a Single Selection - Single Play

You can play just one selection and then stop instead of playing the entire disc.



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[ Play stops when

@ the chosen selection ends.

* To choose a Selection number over 20, see page 18. To cancel single play Press CONTINUE/SINGLE again.


Playing Repeatedly - Repeat Play

With the repeat function, selections can be repeated in the current play mode (entire disc play, single play, program play, or shuffle play). In addition, the section between two adjacent custom indexes can be repeated.


To cancel repeat play


Press again

You can press REPEAT before or during play. In shuffle play mode:

All selections will be repeated in random order. When all the In entire disc play mode: selections have been played, play will restart in another All selections on the disc will be repeated. random order.

Between two custom indexes: The section between the specified index point and the adjacent index point will be repeated.

In single play mode: The selection being played will be repeated.

In program play mode: The programmed selections will be repeated in the programmed order.

!f you designate repeat play during delete shuffle play When the selections you choose end, repeat play of all the selections will begin.


Playing in a Random Order -shuttie play

You can have the selections played in a random order.

The unit will play all the selections, or just the selections you desire.

To stop playing Press Mf.

To cancel shuffle play Press CONTINUE/SINGLE and return to the normal playing mode.

To play only the desired selections in a random order Delete Shuffle Play Delete the undesired selections before or during play.

To check the remaining time of the selection being played Press TIME/MEMO once; press once more to return to the initial display. The total remaining time will not be displayed.







To delete a selection, press the numeric button for that selection. “OFF” will be displayed in the window. You cannot delete a selection which is being played. To choose a selection number over 20, see page 18.

To restore a selection which you have deleted, press the numeric button for that selection. “ON” will be displayed in the window.

When delete shuffle play ends The unit returns to the shuffle play mode for all selections.

To go to the next programmed selection Press PI. To return to the beginning of the selection being played, press Ké<€.


Playing in a Desired Order - Program Play

You can create a program by designating up to 20 selections in the order you want them to be played. The unit will play the disc

according to your program.

2 Press selection numbers in the desired order. *


2 8 5 heh :

current selection

* Tochoose a selection number over 20, see page 18.

To siop playing Press

To repeat program play


You can play the same program repeatedly as long as you do not cancel program play or erase the program.




chosen selections

total time

To cancel program play

Press CONTINUE/SINGLE and return to the normal playing mode.

The program will be erased.

To erase the entire program Press lf once during stop mode; twice during play. The program is also erased when you turn off the unit.

To create a program for editing a tape

You can insert a pause in your program. Use this function to make a program for both sides of the tape at one time.

1 Program the selections for side A.

2 Press fl. “P” will be displayed and the total playing time will be reset to 0.

3 Program the selections for side B.

When you start playing, the selections for side A will be

played and then the unit will pause. Set the tape to the

beginning of side B, then press Il. The selections for side B

will be played.

To check your program

Each time you press CHECK, the selection number and total playing time will be displayed in the programmed order. The last selection will be indicated with the display “END”.

To return to the initial display, press CHECK once more.

To change your program

You can make the following changes before starting play.

To erase the last selection, press CLEAR. Each time you press CLEAR, the fast selection in the program will be erased.

if “.---" is displayed instead of the actual time you have programmed a selection number over 20. the total time has exceeded 100 minutes.

To check the remaining time

Press TIME/MEMO once to see the remaining time of the selection being played; twice to see the total remaining time; once more to return to the initial display.

If youhave inserted a pause, the display shows the remaining number of selections and time until the pause.

If you have programmed a selection number over 20, ‘----” is displayed instead of the actual time.

To add a selection to the end of the program, just press the numeric button for that selection. You can add a selection also during play or pause.

To delete a selection, press CHECK repeatedly until the undesired selection is displayed. Then press CLEAR.

To change the order, press Ml during stop mode to erase the program. Then repeat the programming procedure from the beginning.

To adjust the blank spaces between selections

In a program, if you do not change the order of selections, the spaces between those selections remain the same as on the disc. Otherwise, the spaces are shortened to 1 second. You can make all the blank spaces 3 seconds long. See page 18 for details.

To record the specified selections in the desired order, refer to the “Program Edit” section on page 45.


On Custom Files

The CD player incorporates a memory in which you can store three types of informations called ‘‘custom files’’.

Three custom files you can store in memory

Disc memo A comment of up to 10 letters, which you

ers aS can assign to each individual disc. (page 26)

Prograrn bank:._| A programmed playing order you store in

memory for a diSc, so that the disc can always be played in a fixed order. (page 25)

Custom:Index | You can assign up to 10 custom indexes to any desired position on the disc. If you assign a custom index to a position ona disc, you can easily locate the position during play, or enjoy repeat play between two adjacent custom indexes.

| (page 28)

What are these indications?

CUSTOM FILE lights when a program bank is INDEX | PGM |——— memorized.

lights when a custom index is memorized.

What is this indication? This indication appears when FILE is pressed but no a custom file can be memorized for the disc currently WL loaded in the player. To make a custom file for the disc, clear the custom file of another disc.





Before using custom files

Press ERASE and FILE together before depressing