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Service Manual

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FM-190 X-190

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Summary of Contents for FM-190

Page 1: ...Service Manual THE FISHER T H E F I S H E R 6 0 o CT VOlUM 0 Ej 0 0 ro lRe e BALANCE 11I11 11l I FM 190 X 190 ...

Page 2: ...e same voltage appl ied to its collector DO NOT use an ohmmeter for testi ng transistors The voltage applied through the test probes may be higher than the base emitter breakdown voltage of the transistor Output Stage and Driver Replacements for output and driver transistors if necessary must be made from the same beta group as the original type The beta group is indicated by a colored dot on the ...

Page 3: ...se posi tion and fit the clioI corcl into the remaining pulley Set the dial cord in the outer groove of the front end drive drum and thread it through the loop in the end of the tension spring See detail drawing ot lower right Pull all slack dial cord through the loop in the tension spring Check all pulleys for proper threading of the dial cord Tie a small knot in the dial cord to secure it to the...

Page 4: ...omatic shut off switch 51 part of SELECTOR switch J9 and its plug and the interconnecting cable and the turntable switch on the record player Distortion Hum Weak or No oudio output Check SPKR switch position and its operation Test or substitute VI Test for proper DC voltages at CR2 C2 R3 R3 R6 C3B R6 R7 C3C R7 C3D Setting of HUM ADJUST CONTROL R2 29S volt DC power supply fi Iter C3A B C 0 Bios sup...

Page 5: ...e 3 SaM 01 Step I 1000 cps on 0 7 V RMS vertlc ol Input to left ZI top Maximum reoding on VTVMl clean left dlannel only 13 92 V p P l nonnel output lug 1000 cps line wave on os IUoS ope f rmlnal Jill 4 Sam a Step I 1000 cps on 0 7 V MS Some a Step 3 MPX leparatlon Mlnl ul atJn3b 0be d be right ehann 1 only 3 92 V P Pl ontrol R4 obtained In Step 3 VTVM llid oscillos op Some VTVM reading Q obtaln d ...

Page 6: ... OFF SHOWN IN FM MONO M STEREO FlI STEREO F1LTEIt I 1 0111 ALl VOLTAt MID UMINT MtASUltEM NT In L IM VOLTAGI T01l1VAC t DC VOLT E MIAIUftitl WITH DC lTV TO eI S ltITH NO atONAL INPUT lIl lCTOfl ITCK IN M MONO OIITION TUIlt1l OWlR COMNECTOR ...

Page 7: ...pped best way either prepaid or C O D unless otherwise specified For instrument operation information and technical assistance write Richard Hamilton Customer Service Department FISHER Radio Corporation Long Island City NewYork 11101 CAPACITORS 0 tolerance for all fixed capacitor unle oth rwl e C17 C oml 5000 80 29 500V C5008906 noted or mark d GMV guarante d minimum volue All capacitors not marke...

Page 8: ...104J Symbol D crlptlon Port No RESISTORS R429 Dep Ca bon 1 5M 511 1 3W R33DC15sJ Symbol Description PartHo R430 Dep C bon 47K 5 1I3W R33DC473J IND1CA TOa C401 Capacitor Mylar 047uF 10 loDV CS08574 s R431 D p Corbon 68K R12DC6S3J AMPLIfiER C402 C pacltor Polystyren 2700 5 R401 Re lstor Dep Carbon 33k 5 R432 Dap Ca bon ISO slI 1I3W R33DC151J AND 3llKC 12 V C50B634 20 1 8W Rl pC333J R433 434 OSCILLAT...

Page 9: ...7 J 02UF 8a IIII B RuI J L r CI5llF l TREBLE I 21k 3000 I L J PC2 NOTe I ALL VQL1lI4ES MEASUR O WITH VTVM AT I nV AC I lfl NO Sl6NAI INPUT 2 VOLTAGf VAlIIlr J WITH AU S ALL call AOTOIl 1 NOT MARKED AIl E PI lUUFJ 4 VOI T AQES M ASlRt O WITH TUNER OFF ANO WU O Cfl E SLIGNTLY WITH TUN R ON PoS Sf SELECTOR SW I PHONO SHOWN IN 2 FM 3 AUX ...

Page 10: ...nd I ad of DC 2 Un5lround d tub 10 7 MC None VTVM to iunctIon of T5 top Z ro Indication on two rl conn ct d hl ld of V2 eXf mal r I for nro c nt r dial 47K S wlr d boo d o POINT 3 22 S KC deviation Through lOOK L5 and L4 3 90 MC 90MC o r slstor to 400 co Tut Point 2 Two 120 ohm 22 S KC Adl t for maxi Through lOOK mum n gatl carbon resl ton d lation voltog and check I 4 106 MC In rI with 106MC r i ...

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