Instruction/ maintenance manual of the product DX-75 Realistic
Go to page of 10
Ltstlc- COM MUN I C AT I ON REC E IV E R OPERATING AND SERVICE INSTRUCTIONS M(IDEL DX.I5 RADIO SHACK CORPORATION DIVISION OF TANDY COR,PORATION.
# INTRODUCTION The Realistic DX -75 Communications Receiver is desig'ned to I rvideboth the usual "long wave" standard broadcast recei)tion and'short wave' international broadcast recep- tion. Therefore, it allows the listener to span the oceans ald travel around the world by means of radio waves.
SPECIF'ICATIONS 6-5/16 x 14-I/4 x Lt)-17/32 1 5 pounds 550 to 1600 KC - 1.6 to 30 MC 3.5prv at 20 MC (6 db signal-to- noisc ratio with 30/s mocl . ) 6 db dorvn, 14.5 KC; 60 db dorvn, I 25 KC I .5 warrs 105 to 125 volts, 60 cps 35 watts OPERATION VOLUME Ciockwise rotation of t]le Volurne control knob turns on powcl and increascs volume.
SET TUNING CAPACITOR FULLY CLOSEO SPRING HERE 3_LooP coRD 3_t/2 TURt{S AROUNO SHAFT LOOP CORD FAST E FASTE Fig. I Dial Stringing Diagram SET TUNING CAPACITOR FULLY CLOSEO G' MAIN TUNING DIAL CORD.
s c3 2-25 c4 4-40 c5 4-40 c6 4-40 c7 220 ct5 .OO5Pf ALL RESISTOR VALUES ARE IN OHMS A I/2WATT UNLESS OTHERWISE SPECIFIED, ALL CAPACITOR VALUES ARE IN MICROMICROFARADS UNLESS OTHERWISE SPECIFIED. f3- ){ R2 t.5K : g.F.o. I c27 30 "/ sw .{ oN I {as I 470 = 4 B.
v2 I28A6 c38 rt .oo5l s V3 I2AV6 V4 6AQ5A I c26 I.otpt - R24 o, sw 3 IOOK .1 ST8Y. I REc. = Rll 2.2M cRl EO 3004 R23 4.7K Rt9 250 stv 4 8.F.O. CONT clD 40pl 350v crc lOpf 350V DX -75 T- I I l rC t28 +.
/ii- ey/ ,ri-3-l t'_J .t@ ,-.@ .o@ cs@ cq@ cs@ ceO L6@ L8@ 15@ cu@ crz@ u z (O gs@ qq@ o Fig. 2 Chassis Layout Diagram.
* A LIC;NMENT INSTITIJC'f IONS Equiptnr:nt rcquirccl : l. Oscilloscopc with calibratcd vcrtical scalc 2, RF Signal gcncrator- capablc of: a, Oprcratiol fronr 455 KC to 30 MC b. Attenuation below lpv output c. Modulation at I KC wich variablc modula- tron pcrccnt.
PARTS LIST I'TEM NO. DESCRIPTION PART NO. ITEM NO. DESCRIPTION PART NO. VI v2 V3 V4 TUI]ES 6CL8A 128A6 I2AV6 6AQsA CAPACITORS 40 -20 -10 -4Oprfl350V -350V -350V -150V Electrclytic .
PARTS LIST (CON'T.) ITEM NO. DESCRIPTION PART NO. ITEM NO. DESCRIPTION PART NO. TI lz .r? T4 TRANSFORMERS Power Traasformer Outprt Transformer IF 455KC IF 455KC COILS RF Band #l RF Band #2 RF Band #3 RF Band #4 Osc, Band #l Osc. Band #2 Osc. Band #3 Osc.
An important point after buying a device Realistic DX-75 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Realistic DX-75 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Realistic DX-75 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Realistic DX-75 you will learn all the available features of the product, as well as information on its operation. The information that you get Realistic DX-75 will certainly help you make a decision on the purchase.
If you already are a holder of Realistic DX-75, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Realistic DX-75.
However, one of the most important roles played by the user manual is to help in solving problems with Realistic DX-75. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Realistic DX-75 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
