Akai ATV 04 Service Manual

Page 2

l . TECHNICAL DATA

FM TUNER SECTION

FREQUENCY RANGE

CAPTURE RATIO

"3'75 MI-Iz-�t-�o 108 MHz

,,,1,-�9uV,
71.2dB

SELECTIVITY

More than 65 dB

IMAGE REJECTION

More than 60 dB (98 MHZ)

IF REJECTION

More than 85 dB (98 MHZ)

SPURI0U§7REJE7C7TION 77 7M70Ie thfl1785 dBL9787MHz) 77 77777777 7
AM SUPPRESSION 60 dB 77
SIGNAL TO NOISE RATIO 7 73 dB 7 7 777 7
HARMONIC DISTORTION

MONO Less than 0 .09% (100% modulation)

STEREO 7 7 7 Less7 than 0. 713% (100%71-7ngt7iu1ation)777 77
STEREO7S7E717-�ARATION 77 More than7572 dB (1 kHz)77 77
SUB7 CARRIER SUPPRESSIQN More tha7n7 760 dB 777 777 7 777
OUEPUT VOEEGE 77771737er I V (100%7m0dulat7170n)77 77777 777 77
ANTENNA INPUT IMPEDANCE 300 ohms i,balanced

75 ohms unbalanced
AM7 TUNER SECTION 77 7 7 7 77 77 777
FREQUENCY RANGE 520 kHz to 1,605 km 7 7 77 77
SENSITIVITY (IHF) 150 uV/m (bar antenna)
10 11V (e7xternal antenna) 77
SELECTIVITY (II-IF)77 777777 M7o7re than 730 7dB 77 77777 7 7 77
IMAUEREJECTION 77 More 7t7han 55 dB (1 19070713112) 7 7 77
IF REJECTION ' 77 More 77than759 dB 77 7777 77 77 777 7
SIGNAL TO NOISE RATIO 77 7 More than 55 dB 7
OUTPUT VOLTAGE i 77 7 7-� 3007 (IN (30477 modulation)
ANTENNA I BuiMin ferriteibar antflia 7 77 77
POWER REQUIREMENTS A 120 V,760 HZ for USA and Canada
220 V, 50 Hz for Europe except UK
-� 240 V, 50 HZ for UK and Australia
110 V/220 V/240 V, 50/60 HZ internally switchable for
777 77 7 Other cogtries. 7777 777 77 777 7 77
DIMENSIONS 440 (W) x 78 (H) x 340 (D) mm
77 7 (177773x3. 1 x13 .4)inc7hes 77
WEIGHT" 7 4 9 kg
7 77 7 7777 (10 81bs)777 77 7 7 77777 77 7 777
EQLNER CQNSUMI-�UON I 20 w ,,

- * For improvement purposes, specifications and design are subject tO change without notice.

Page 5

1. FM SECTION ADJUSTMENT (Refer to Figs. 5, 6 and 7)

Result

DStep Adjustmentltemw Adjustment Point Remarks
Front End T1 Maximum noise EAND :0 FM -� and MODE to
i 1 . . MONO . Detune from broadcast
IF Cod Front End r level . .
. and receive noise only.
l V 7'77'7 7"" '
Tuning Indicator Center indication -� .
2 Centering T3-a of tuning LEDs 98 MHz, 60 dB (mono) input.
mifik, , , , 7,-�, . ,77,7,, WW ,
3 Distortion T3-b Distortion Factor: 98MHZ, 60 dB (mono) input.
Factor less than 0.09 % Minimize distortion factor.
Confirmation of -� If tuning indicator is not cen-
4 Tuning Indicator . . tered, readjust Steps 2 and 3
Centering l described above.
-� l 98MHZ, 60 dB (mono) input.
1 98.00 MHz Ground. TP2 on FL P.C. Board
5 FL Dis la VRI -� Tune b en term and adjust VRl so that display
Fre -�6:10), 1 FLD P.C.B (A) LED and, fn'nimufi shows 98.00 MHZ and 4th numeral
q y 3 ATV-4008 . . 1 display must be stable. After
. distortion factor. . ,
; completion, remove grounding.
. . 108.2 MHz, 60 dB (mono) input,
-� 6 H13? Kluge T TCO MM-�lmmung.°:-�tPt-�_-�t Turn TUNING KNOB fully clock-
In dlSP Fin Front End lmmlgéml: or ion wise. Display to 108.20 MHz by
-�a 1 -� ' adjusting TCO.
C°nfirmm°n l l WWWP-�.-� 88 MHz, 60 dB (mono) input.
of Low Range Minimum distortion .
7 i l Confirm whether display show 88.0
1 -�may i facw-� Ml-I7 Error 250 kHz
r Indication 88.0 i .25 MHZ " '
8 High Range TCR, TCA Distortion Factor: 108 MHz, 6 dB or less (mono)
-� Sensitivity Front End less than 3 % input.
1 Confirmation Distortion Factor: B8 MHz, 6 dB or less (mono)
9 of Low Range -� less than 3 (7 input.
Sensitivity -� " Refer to NOTES 2 and 3.
l 10 M t-� be 1 VR1 30 kB No signal emitted MODE to -�STEREO-�.
-� -� mg -�6 ATK-ZOOIA from OUTPUT 98 MHz, 22 dB (mono) input.
l PLL IC Free Frequency Counter to Test Point,
-� 11 Running 1,1131: 21801;}: 76.00 kHz Detuned condition.
; Frequency I Refer to NOTES 4 and 5.
1,,
Confirmation of .
-� i2 STEREO indicator Must be lighted ifohgztfgsfifigg?) Input
I Lighting -�
3 l . . VR3 100 kB 98 MHZ, 60 dB (stereo) input.
13 P11332381 L6 1 Minimum output SSG modulated by only pilot
ATK-ZOOIA 3 signal, 19 kHz.

ll

Page 24

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