JVC TD-W254 B Instructions Manual Download Page 4

2. Installation
1) Avoid placing the unit on or adjacent to an amplifier, to pre-

vent hum from being produced by some types of amplifiers.
Move the unit to a place not affected by the amplifier. Keep
the unit as far as possible from a TV set.

2) Avoid installing the unit in a location subject to ambient tem-

peratures exceeding 40 °C (104 °F) (e.g. direct sunlight,
near heaters, etc.) or less than 0 °C (32 °F), excessive
humidity, dust or vibrations.

3) If this set is moved suddenly from a cold place (0 °C) to a

warm place, it may not function properly because of moisture
generated inside the unit. The unit will function properly
30 minutes after being moved.

3. Cleaning the cabinet
Never use benzine or thinner for cabinet cleaning as they may
damage the surface finish.

4. Cassette tape
1) Loose tape may become tangled in the tape transport

mechanism. Remove slack by winding the tape with a pen-
cil.
(Fig. 2)

Fig. 2

Turn the pencil to tighten the tape.

2) The use of C-120 (120 minutes turn around) or thinner tape

is not recommended, since characteristic deterioration may
occur.

3) To prevent recordings from being erased accidentally,

remove the tab(s) with a screwdriver. Reseal the slots with
adhesive tape to erase and re-record after the tabs have
been broken off.

Fig. 3

4) Do not store cassette tapes where there is a magnetic field

(e.g. near a TV, etc.) or in a place subject to high tempera-
tures or humidity.

5. Auto tape select mechanism (decks A and B)

This deck has an Auto Tape Select mechanism which distin-
guishes between different types of tape from holes in the
cassette. After the type of tape has been detected, bias and
equalization are set to be suitable for the tape.

Cassettes with the detection holes:

Metal tape (EQ: 70µs) ........................................ Type IV
CrO

2

(chrome) tape (EQ: 70µs) .......................... Type II

Cassettes without the detection holes:

Normal tape (EQ: 120µs) ..................................... Type I

Some earlier types of metal and CrO

2

(chrome) tapes may

not be provided with the detection holes. Avoid using such
tapes, since correct equalization characteristics cannot be
obtained. Also do not use ferrochrome tapes whose charac-
teristics do not match this unit.

6. Operations
1) Noise may be generated if the

POWER switch is

switched OFF with the deck set to playback or recording
mode. Before switching the

POWER switch OFF, confirm

that the

(stop) button has been pressed. (B version)

2) Many operations of this unit are performed under the control

of a microcomputer. Use the unit only after carefully studying
the descriptions and cautions in each item. If operations are
done incorrectly, the unit may stop functioning correctly. If
this happens, for the J version, unplug the power cord and
for the B version, set the

POWER switch to

OFF, so

that the unit can function correctly.

Side ‘‘A’’

Tab ‘‘B’’

Side ‘‘B’’

Tab ‘‘A’’

Adhesive tape

CrO

2

tape detection

holes

Metal tape detection holes

– 4 –

id8/i10371/ 11/25/96 Page 4

Summary of Contents for TD-W254 B

Page 1: ...HX PRO AUTO TAPE SELECTOR CONTINUOUS PLAY REVERSE MODE DOLBY B NR OFF C B POWER REC REC MUTE PAUSE COUNTER RESET COUNTER RESET PHONES A B SYNCHRO DUBBING NORM SPEED HIGH SPEED PLAY PLAY MIN MAX 1 2 5 3 4 6 INPUT LEVEL MIN MAX 1 2 5 3 4 6 7 8 9 INPUT LEVEL TD W254 DOUBLE CASSETTE DECK DOLBY B C NR HX PRO AUTO TAPE SELECTOR CONTINUOUS PLAY DOLBY B NR OFF C B REVERSE MODE B REC PLAYBACK 3MOTOR SILENT...

Page 2: ...ot be re recorded without the consent of the owners of copyright in the sound recording and in any copyright musical or literary work embodied in that recording as this constitutes an infringement of copyright INFORMATION FOR U S A This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to Part 15 of the FCC Rules These limits are designed to provid...

Page 3: ...fety when not using the unit for an extended period of time disconnect the power cord from the household AC outlet for the J ver sion Set the POWER switch to the OFF position when not in use for the B version 2 Do not handle the power cord with wet hands 3 When unplugging from the wall outlet always grasp and pull the plug not the power cord 4 Consult your nearest dealer when damage disconnection ...

Page 4: ... is a magnetic field e g near a TV etc or in a place subject to high tempera tures or humidity 5 Auto tape select mechanism decks A and B This deck has an Auto Tape Select mechanism which distin guishes between different types of tape from holes in the cassette After the type of tape has been detected bias and equalization are set to be suitable for the tape Cassettes with the detection holes Meta...

Page 5: ...ing synchronized recording with a CD player con nect the remote cable to the COMPU LINK 3 SYNCHRO jacks Notes 1 When making synchronized recordings only a single deck should be connected to the amplifier 2 If a component is not a JVC COMPU LINK component bypass it when making the remote cable connections 3 This deck can be connected with an amplifier and a CD player which have the COMPU LINK 1 SYN...

Page 6: ...and record modes Indicates the direction of tape travel REC Lights when the unit is in the record and record pause modes blinks dur ing record muting Pause indicator This lights when winding the tape from left to right This lights when winding the tape from right to left 9 Indicates reverse mode 9 COUNTER RESET button deck B 0 eject button deck B q Cassette holder deck B w DOLBY NR switch Set to B...

Page 7: ... of deck A Operate in the order of the numbers in the illustration 1 Turn the power on 2 Load a prerecorded cassette with side A facing out 3 Select the side to be played back Side A Forward direction PLAY Side B Reverse direction PLAY 4 Set the DOLBY NR switch to the same setting as when the tape was recorded 5 Select the REVERSE MODE switch as desired 6 Press the PLAY button of deck A to start p...

Page 8: ...med automatically Since recording level adjustment is performed automatically for different types of tape normal CrO2 and metal the adjustment of INPUT LEVEL control is not required Read the instruction book of your CD player carefully RECORDING LEVEL ADJUSTMENT Adjust the recording level while observing the peak level indica tor indication For example With metal tape Because of metal tape s highe...

Page 9: ...y will change if the positions of the DOLBY NR switch are different in recording and playback Dolby HX PRO headroom extension When a source which contains many high frequency compo nents is recorded these high frequency signals have the same function as bias and therefore the effective bias current changes This will result in phenomena such as changes in the level of low frequency signal and subse...

Page 10: ...l synchronized recording or DDRP recording press the STOP button of the CD player or cassette deck Synchronized recording does not start except when the record pause mode is set by simultaneously pressing the REC REC MUTE and PAUSE buttons in the stop mode The source is locked to the CD position during synchronized recording or DDRP recording to avoid accidental stops or switch over to another com...

Page 11: ...audio store After cleaning be sure that the cleaning fluid has completely dried before loading a cassette Demagnetizing the heads Magnetic objects brought close to the head or using the deck for a long period of time results in magnetization of the head thus noise occurs When the noise is excessive high frequencies on the recorded tape may be erased Demagnetize the heads and other metal parts that...

Page 12: ...PERM head for recording playback 2 gap ferrite head for erasure combination head x 1 Motors Electric governed DC motor for capstan x 1 DC motor for reel x 1 DC motor for mechanism drive x 1 For both decks A and B Fast forward rewind Approx 110 sec with C 60 cassette time Input terminals LINE IN Input sensitivity 80 mV 0 VU x 1 circuit Input impedance 50 kΩ Output terminals LINE OUT Output level 30...

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