Jvc 1400 U Service Manual

Page 1

No. 4056
September, 1971

[BE]

NIVICO

SERVICE MANUAL

MODEL 1400, I4OOU
TAPE RECORDER

Dimensions: 44.8 (H) x 40.8 (W) x 18.5 (D) cm
(17-5/8" x 16" x 7-1/4")
Weight: 12kg (26.4 lbs.)

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AC 100V ~ 240V; SOHz, 60Hz (1400U)
AC 120V; 60Hz (1400)

Power consumption: 55W

Fuse capacity: 2.3A

Recording system: 4-track stereo (4-channel)

Power supply:

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Transistor, IC:
Diode:

Frequency response:

S/N:

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Output impedance 8:2

IC 8 pcs.; Transistor 20 p05,

6 p054 Zener diode 1 piece

l9cm/s 20 ~ 25kHz at 19cm/s
(30~ lOkHz :3dB)

More than 53dB (from peak level)

Bias system: AC bias 95kHz
Erasing system: AC erase Crosstalk: More than 50dB
Tape speed: l9cm/s, 9.5cm/s Distortion ratio: Less than 1.2% at specified recording
Wow & flutter: 007me at 19cm]: and playback
Recording time: 45 min. (l9cm/s) 4 channel) Recording playback

with long tape (555m) compensation

90 min. (l9cm/s, 2 channel go and characteristics: NAB
return) with long tape(555m) lnputjack: MIC jack x 4 0.3mV 6009

The time doubles at 9.5cm/s.

Within 160 sec. with standard tape (370m)
Within 160 sec. with standard tape (370m)
Line outpuljack; 0~ 1.2V

variable. Output impedance 4.7k0
Headphone jack; 0 ~ 0.8mW variable,

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F. Forward time:
Rewind time:
Outputjack:

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DIN connector:
(REC/PB)

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AUX INjack x 4 77.5mV lOOksz

Input level ISmV

(Signal source impedance 80km)

Standard output 0.5V (0 ~ 0.8V
variable)

Output impedance iOkn

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2. FEATURES

4-channel recording and playback

Behead system with tape monitor

Mechanical automatic stop

Changeover switch from SH (high performance for low noise) tape to normal tape
IC used '

Easy tape loading

Adjustable headphone volume

Slide adjusting conlrols

Level meter with high sensitivity

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Channel selection

3. DESCRIPTION OF PARTS

Fig.1

i400, 1400U , 2