Jvc R 1 X Service Manual

Page 2

Contents

1. Specifications ........................ 1
2. Removal Procedures .................. 2 - 3
2-(1) Top Cover ....................... 2
242) Bottom Plate and Power Transistors ...... 3
3. Rear View and Part Numbers .............. 3
4. Exploded View and Part Numbers ........... 4
5. Dial Stringing Procedures ................. 5
6. FM/AM Tuner Alignment Procedures ....... 6 - 7
6-(1) FM Section ...................... 6
6-(2) AM Section ...................... 7
7. Power Amplifier Idling Current Adjustment
Procedures .......................... 7

8. Printed Circuit Board Assy and Parts List . . . . B - 12
8-(1) TFC-32 FM/AM Tuner and Equalizer
Amp. P.C. Board Assy ..... 3 - 10
8-(2) TXX'303 Main Amp., Power Supply and All
Functions P.C. Board Ass'y. . 11 - 12
9. Packing Materials and Part Numbers .......... 13
10. Accessories List ....................... 13
11. R-1X Schematic Diagram .............. 14 - 15
12. Parts List with Specified Numbers for
Designated Areas ...................... 16
Warning:

When replacing the parts marked with A ,be sure to

1 . Specifications

FM Tuner Section (Figures are based upon IHF standard)

Tuning Range
Usable Sensitivity (IHF)
50 dB Quieting Sensitivity
Mono
Stereo
Distortion
Mono
Stereo

:87. 5 MHz - 108 MHZ
: 10.3 dBf (1.8 [JV/300 S2)

: 14.8 dBf (3.0 pV/300 Q)
: 38.3 dBf (45 [JV/300 Q)

: 0.15% (1 kHz)
: 04% (1 kHz)

Signal to Noise Ratio (Weighted A" Network)

Mono
Stereo
Selectivity

Capture Ratio

IF Rejection
Image Rejection
Stereo Separation

AM Tuner Section
Tuning Range
Usable Sensitivity

Signal to Noise Ratio
Distortion
Selectivity

Power Specifications

:82 dB (74 dB, DIN)
:75 dB (65 dB, DIN)
: 65 dB, i400 kHz

(55 dB, i300 kHz, DIN)

: 1.0 dB

:90 dB at 98 MHz
:60 dB at 98 MHz
: 40d8 at 1 kHz

: 525 kHz - 1605 kHz
: 300 pV/m,

55 [JV (External Antenna)

: 50 dB
: 0.5 % at 100 mV/m
: 36 dB, :9 kHz

use the designated parts to ensure safety.

Amplifier Section
RMS Power
Both channels driven,
from 20 Hz to 20 kHz
RMS Power
Both channels driven,
at 1 kHz

Total Harmonic Distortion:

: 25 W per channel at 8 ohms

: 27 W per channel at 8 ohms

0.03 % at rated power

20 Hz - 20 kHz 8 ohms
0.008 % at rated power 1 kHz
8 ohms

Input Sensitivity/Impedance

PHONO
TAPE PLAY 1, 2
TAPE PLAY1 (DIN)
Tone Control
Bass
Treble
Hum and Noise
(to rated input level)
PHONO
AUX, TAPE PLAY

: 2.5 mV/47 kohms
: 120 mV/4O kohms
: 120 mV/40 kohms

:tB dB at 100 Hz
2&8 dB at 10 kHz

(Weighted by IHF New IHF
A" network)
71 dB 74 dB
91 dB 78 dB

Areas Line Voltage & Frequency Power Consumption
U.S.A., Canada AC 120 V, 60 Hz 150 W, 180 VA
Europe AC 220 V\I, 50 Hz 310 W
Australia AC 240 VV, 50 Hz 310 W
Other Areas AC 110/120/220/240 V\a, Selectable, 50/60 Hz 310 W
Dimensions and Weight
Dimensions Weight
Areas .
Height Width Depth Net

All Other Countries

U.S.A., Canada & U.S. Military Market

9.5 cm (3-3/4")
9.4 cm(3-11/16")

44.4 Cm (17-1/2")
42.0 cm (16-9/16)

35.0 cmi13-13/16")
35.0 cm(13-13/16)

6.35 kg (14.0 lbs.)
6.1 kg (13.4 lbs.)

R-1 X
No. 2557

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