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Sansui 661 SM

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Олександр Промович
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399 views34 pages

Sansui 661 SM

Uploaded by

Олександр Промович
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF or read online on Scribd
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SERVICE MANUAL AM/FM STEREO RECEIVER SANSUI ELECTRIC CO,, LTD. ost This service manual is designed for service engineers to repair, adjust, maintain and order the replacement parts of the 661 correctly. ‘When ordering the parts, use the stock number and parts name speci- fically referring to the Parts Locations & Parts List. For general usage and maintenance of the unit, please refer to the Operating Instructions attached with the unit. TABLE OF CONTENTS. Section Title 1. SPECIFICATIONS 2. BLOCK DIAGRAM AND LEVEL DIAGRAM 241. Block Diagram 22. Level Diagram 3. THREADING OF DIAL CORD ALIGNMENTS AND ADJUSTMENTS, 41. Driver Circuit Board Adjustment 42. FMIF Alignment 43. FM Dial Calibration and RF Alignment 44. FM Signal Meter, Mono Distortion and Muting Adjustment 45, MPX Alignment 46. AMIF, Dial Calibration, RF and Signal Meter Alignment. 5. TROUBLESHOOTING CHART 5-1. Troubleshooting on Power Supply Section 5-2. Troubleshooting on Audio Section 53.__ Troubleshooting on Tuner Section 6. PARTS LOCATIONS AND PARTS LIST 641. F-1501 Pre Amplifier Circuit Board 62. FA49IA Tuner Circuit Board. 15, 1 6-3, F-1499A Driver Circuit Board G4, F-1500A Power Circuit Board 65. Other Parts (Front Side) 6-6 Other Parts (Top Side) 7. Other Parts (Bottom Side). SCHEMATIC DIAGRAM OF TUNER SECTION - ‘SCHEMATIC DIAGRAM OF AUDIO SECTION © 9. PACKING LIST . 10. ACCESSORY PARTS LIST 11. MAINTENANCE THI. Voltage Adjustment « 1. SPECIFICATIONS AUDIO SECTION POWER OUTPUT (at rated distortion) MUSIC POWER (IHE)......-TIOW (49. 1,000H2) 75W (82 1,000H2) CONTINUOUS POWER (Each Channel Driven) ..40/40W (40. 1,000H2) 32/32W (6A 100042) (Both Channels Driven). .27-+27W (801 7,000H2) 20+20W (8A 20 to 20,0002) TOTAL HARMONIC DISTORTION {at rated power output) OVERALL (from AUX) Jess than 0.5% INTERMODULATION DISTORTION (at rated power output, 70Hz = 7,000Hz—4:1 SMPTE method) OVERALL (from UX) .. less than 05% POWER BANDWIDTH (HF) 15 to 40,0002 FREQUENCY RESPONSE (at 1 Watt power output) OVERALL (from AUX) ....15 to 30,000Hz *)$dB EQUALIZATION (at TAPE REC outpun) RIAA Curve 0 to 15,000H2 +1.0d8) LOAD IMPEDANCE 4 to 160 DAMPING FACTOR 60 (82) (CHANNEL SEPARATION (1,000Hz, at rated power output) PHONO, better than 4540 AUX better than 4548, HUM AND NOISE (IH) PHONO better than 7048 AUX better than 8048, INPUT SENSITIVITY AND IMPEDANCE (1,000!z, for rated power output) PHONO, 2.5mV 500 (Max. input capability: 150m at rated distortion) AUX 1OOMV 50k TAPE PLAY Pin Jacks ........100mV 50kQ REC/PLAY DIN Socket ..100mV 5OkQ TAPE-2 (4-CH ADAPTOR) PLAY Pin Jacks ‘toomy 50k, RECORDING OUTPUT TAPES REC Pin Jacks «+... 100mV REC/PLAY DIN Socket ..30mV TAPE-2 (CH ADAPTOR) REC Pin Jacks 00m SWITCHES AND CONTROLS BASS 2... 21008 at SoHz TREBLE +£10dB at 10,000H2 LOUDNESS +108 at SOHz, +848 at 10,0042 —10d8 at 10,000H2 (edBjoct.) HIGH FILTER TUNER SECTION TUNING RANGE 88 to 108MHz SENSITIVITY (JHE) 22nV) TOTAL HARMONIC DISTORTION MONO... 05% STEREO... 07% SIGNAL TO NOISE RATIO. better than 60d8 SELECTIVITY... better than 5008 CAPTURE RATIO. 2.58 IMAGE REJECTION better than 55dB at 95MHz IF REJECTION better than 60dB at 98MHz SUPURIOUS RESPONSE REJECTION better than 60dB at SBME SPURIOUS RADIATION less than 34¢8 STEREO SEPARATION better than 3548 at 400H2 FREQUENCY RESPONSE ....30 to 12,000Hz *h$d8 ANTENNA INPUT IMPEDANCE 3002 balanced, 7502 unbalanced TUNING RANGE 535 to 1,605kHz SENSITIVITY (Bar Antenna) ..50d8/m at 1,000kH2 SELECTIVITY... better than 2848 at 7,000kHz IMAGE FREQUENCY REJECTION better than 80dB/m at 1,000kHz WF REJECTION better than 80dB)m at ,000kHz OTHERS SEMICONDUCTORS. TRANSISTORS, Fer. Ics. ei DioDES |. ZENER DIODES POWER REQUIREMENTS VOLTAGE 100,117, 220, 240V, S0/60H2 CONSUMPTION 7OW (rated), 20VAmax) DIMENSIONS ‘444mm (17-"4") W, 135mm (5-347) Hy 300mm (11-%6") D WEIGHT “10kg (22.0 Ibs.) net, 12.4kg (27.3 Ibs.) packed st 2. BLOCK DIAGRAM AND LEVEL DIAGRAM 2-1. Block Diagram re : 2-2. Level Diagram tach number (@, @, @....) indicated in Level Diae ffam undermentioned corresponds to the number in Block Diagram. 1. MASTER VOLUME control Maximum 2. BASS, TREBLE, BALANCE volume contol ..--Center 3. Input PHONO 2.0mV ‘tkHz Sine Wave AUX-180mV kHz Sine Wave (output impedance of 6000 at an audio oscillator) 4. Qutput . 16V 320) 80 Note: Each voltage valve is for reference and measured by a VIVM. In some recorders, the actual volt- age value is in minor difference fram the refer- fence value. Slots TAPEMONITOR-1 50S.b » HIGH FILTER $7020; SELECTOR 1. OFF 1. OF 1. PHONO 2. ON 2. ON 2 IM AUTO S020,b: TAPE MONITOR? 508: IM MUTING a. AUK 1 OFF 1 ON S703. POWER 2. ON 2. OFF SOI + FMOEEMPHASIS 030.b+ MODE 7010, SPEAKERS 1 758 1. ste 1. OF 2. Sone 2. MONO 2A S04o.t LOUDNESS 38 1. OF Anse 2 ON 16V. ° (088) 70m (-470B) 3. THREADING OF DIAL CORD If dial cord is cut or slips, replace cord by following * Length of dial cord......-approx. 150cm (59 inch) procedures. As 661 is used 06mm¢ cord, please replace it with same type certainly. 4 3 turns (Counterciockwise) 1. Threading of Thread dial cord in numerical order from 1 to 16 as shown in Fig. 31. 2. Attachment of Dial Pointer 1) Close the variable capacitor completely. 2) Set the dial pointer to “0” on dial scale and install, 1) Close the variable capacitor completely (Max. ca~ the dial pointer ass'y (See Fig. 3-2). pacitance) and tie cord to number @ screw of the dial pulley. 2) Thread cord in the direction of arrow from 110 3, then wind cord three turns around the tuning shaft counterclockwise 3) Thread cord in the dicection of arrow from 4 to 12, then wind it wo turns on the dial pulley from 13 to. 4) Alter 16, tie cord to number @ screw of the dial pulley. "When you perform procedure 4) successfully, please refer to the followings. Go strengthen the dial cord tension, hold around the end of cord and pull it toward the Front Fig. 32 Panel. @Then, turn tuning shaft counterclockwise, as the cord tension will be more constantly obtained. ‘Stock No. @Tie the cord to number @ screw of the diai pulley (same as procedure 4), 036050 Dial Cord (o6mms) 5) After procedures, lock the knots of cord with paint. ete eR eee 4. ALIGNMENTS AND ADJUSTMENTS Abbreviation Equipment AM FM Generator Oscilloscope. ‘AM Standard Signal Generator FM Standard Signal Generator FM Stereo Generator. Oscilloscope Audio Oscillator Distortion Meter Genescope AM SSG “FM SSG Stereo SG Scope ‘Audio Osci. Dist. Meter Others Clockwise cw. Counterclockwise ...- cow. Antenna ANT. Modulation. . MOD. 4-1. Driver Circuit Board Adjustment (See Figs. 4-1, 4-2 and 4-3) Note: 1. Master Volume. 2 Speaker Selector ‘Make the SP terminals fre (no load) Minimum SYSTEM (A) 2 44 Confirm the AC Power Supply voltage. 5. Alter adjustment, run the unit for more than 5 minutes, then check and readjust necessary. 6. Room temperature should be 18~28" (65~83°F) for bias current adjustment ste subject EQUIPMENT | MEASURE OUTPUT | ADJUST | ADJUST FOR CONDITION 1 | DCovich | DCvoltmeter | Speaker terminal | f-1499 | OV +10mV ‘Step down meter’ range it Ror accordingly (Fg ay ‘Change lead’s polarity it | meter swings backward 2 | DCOVR:ch | Sameasabove | Speaker terminal | f-1499 | Same as above Same as above Reh ‘veo? ig 4) 3 | Blas current DC milliammeter | F-1500 Fuso | toztma ‘Step down meter's range te For ‘vROS accordingly ig. 42) 4 | Blas current | Same as above —F-1500 F-1499 | Same as above Same as ahove Rech For aos (Fig. 42) Fig. 41 Fig. 42 SPEAKER TERMINAL LZ F lot ig wisp ogee vaareerare ee... 4-2. FM IF Alignment (See Figs. 4-8 and 4-9 on page 10) Note: 1. Selector... FA AUTO. 6. Connection {Connect the output of 2, Master Volume Minimum senescope to TP 1 through TO0pF ceramic capacitor. 3. Output level of genescope +... After attenuator 4 Sweepividth 2s 15~2em/180kH2 5. Frequency band 95~115MHz GENE SCOPE. DETECTOR PROBE BLOCK “47KG 105F W 8 FEED SIGNAL | MEASURE = DUST | ADJUSTFOR | CONDITION step) SUBJECT TOK To) ORR | aon r 7 | Feo ‘Output 5546 Tr. 1P.2 TOI, TO2 | Max IFwave- | ©Turn core of Tos Ganescope ies) | (rig 49) form 135 cow Use Detector | Figs Probe | 2 | Metercoil | Same asabove | Sameas | TP.4 05, Max. IF waver above Gig 49) form 2 | Direct from Sethe center, Genescope of wavetrom 2 : swith waveform The Fig 48 2! Descrimina-| Same asabove | Same as | 1P.3 13 ‘vn. tinearity tor coil above’ ie 49) ofS curve Direct feam | TOL Sexte center Ganescor ofscune a waveform 1& Pate ss 4-3. FM Dial Calibration and RF Alignment (See Fig. 4-9 on page 10) Note: 1. selector seeeessBM AUTO 2, Master Volume... imum 3, FM Muting switch 2 TOFF (pushed ia) 44. Confirm start point of dial pointer before alignment. 5: In Step 3, 4and 5, readjust items of steps 1,2, it not correctly, and repeat 3, 4 and’ again, Tv SCOPE FM SSG UNIT a © ah ie IN our] y to tho FEED SIGNAL MEASURE T sver)_subtecr na qo (SAREE | awusr | apjust ror ‘conoimion + | same ‘eMH2 ANT | BEC OUT Lor | Las ‘Max. output “Set Dial on 88MHe | Dial Calibration | ANT input 6ode terminal | Rec Le BosENGO) SO" | VV & Scope FMSSG. 2 | roan oat Same as | Same as Trimmer Same as Dial Calibration | ANT input 60da_ | above” | above ‘Tcos above’ | ‘Tz (b08% MOD) FMSSG FEED SIGNAL | MEASURE) SUBJECT rae AqusT sree) suns a zo) “OURUr | Apr ADIUSTFOR | CONDITION 3 | Confirm sare | Same asStep 1 | Same as | Same as Confirm If sot, repeat from Baal Calibration above” | above BMH: Dial | “Step Calibration 4 Confirm 9Bmi2 | 90M: Same as | Same as Confirm Dial Calibration | ANT input sods | above” | above SBM? Dial ‘tee (16036 MOD) Calibration FM Sc 5 Confirm Same as Step 2 Same as | Same as Confirm ef not, repeat from ‘gaan shove | ahove Spots Dial “Step 3 Dial Calibration Calibration 6 BBMHe RF Adj. | saya: Same 95 | Same a5, o1,t02 | Max. output | eTune FM SSG (Ma. ANT input 1088 | Shove" | above’ ° Indieation “Signal ‘eH (100% MOD) Meter) iM SSG 7 | T0BMHe RF Adj. | 100M Same as | same as Trimmer Same as Same as above ANT input 1008 | above above Teo TCor | above ‘Te (100% MOD) Fasc 4-4. FM Signal Meter, Mono Distortion and Muting Adjustment (See Fig. 4-9 on page 10) Note 1. Selector. Ft AUTO 2 Master Volume 2. ‘atu VTVM_ SCOPE FM SSG UNIT our. TAPE O JANT | REC, | |v FA iS 3 FEED SIGNAL MEASURE aaa = TEP) sUBKECT z srr) suey =e zo | “MISE | apwsr | apustror | conpmion 7 Sigeal weer] oat TANT termi | Signal Meter] VEGP Adon meter” | Tape Fi SSG (ac MV pet eas | ta pense’ | “liao SP San Pisa it | Frese ern) | obsiore aajunment, = meter Sul out oF Ld | Be crcugh cadet Tartare | j able point 2 | Distortion | Same as above | Sameas | REC OUTL | TO3 Min, distortion | oTune FM SSG (Max. Son" | BES Tellatlon oP Spe Big meer mate een 3 | Muting Level) 98MHz | Same as REC OUT L —VRO3 Audio signal ‘Set FM MUTING switch St tipazsap | Shove” | ESSE Agee | Soe pomeda AMBER) Sins mse Kove 4-5. MPX Alignment (See Fi Note: 1. Selector 2. Master Volume. 3. FM MUTING switeh FM AUTO. Minimum . 4-9 on page 10) 4. Before adjustment, turn VRO4 CW (Max) and VROS to ‘OFF (pushed in) Steeeo se ue | rym SCOPE p= FM SSG UNIT a are Ez] [O ouT| ‘MOD ouT| JANT REC hcp WN ouT| lv Fea deal uno aeE re sree] sunscr e) SOME | sonst | aowsrron | cosomon pave eee fan] pecour | mH) ar onpet | otige Bt SE Ave veneee | O was Fie ae is es, | ekauee tarts, Ceo, ECE NOP 2 Separation | Same as above Szme.as eC Out ROS, ‘Min. output ee ie Sine | whe 3! Cofirm 98MHz Same as REC OUT. ‘Min, output ‘olf less the 35d8, adjust ceca at ereas | some ts te Ane an BE wy Fit Sets | Coo) hes, ema sl insere [sere | samosn | sues o-| vm | vintrerore| ree mA 50 Oey edgator | SOE ran | Stam | Stree, in |) orapeadae SSE vax eee ta | ial ae fist Ses, ghee | 4-6. AM IF, Dial Calibration, RF and Signal Meter Alignment (See Figs. 45, 46,47 and 4-9 on page 10) Note: Selector... 2. Master Volume AM. Minimum 3. Confirm start point of dial pointer before alignment. 44 Incase of using loop antenna, increase output of AM SSG for 26d8 than bar antenna’s direct input asi attenuates input sensitivity for 2648 (See Fig. 4, 5, Alter adjustment of signal meter, confirm the meters swing on FM. (If meter swings out or not enough, readjust VR02.) (See Page 8) Fig. 44 Onz% AMSSS_ Loop ANT our} Ze, ] FEED SIGNAL MEASURE ster] susyect FROM zo) “SOSMAE | avis | apusrroR | conprTion 1 | Weel ‘Output SodB OSC timmer | TP. 5 To? | Max.iF wave: | oTurn core 1088 TOD Genescope fap. (TCO4)” | (Fig. 4-9) | formastig-+5 | “CCW. Seen” | | 2 | treo Output 7048 |Sameas | Sameas | T08 Max 1 waver | Genescope above above | form as Fig. 4-6 3 | IF coil ‘Output 6048 Same as | same as ‘09 Max. IF wave- | olf not, seadjust TO7 & Genescope above above form asFig 47 | T08 slighty 4 | sasktie | sasete Bar ANT | RECOUTL To Max output lf broadcasting sation Daal cslibra: | ANT input 68, or Rech Ts near might be ined tion Soon Sox MOD) Sivat's | ams Scope Tm Use foop ANT ms Labi 5 | on | nite | Sgmeas | Sameas | Tuner | Same aabove| Same as above Dial Calibra- | ANT input Shove’ | above si tion ‘or42 (505% MOD) | oe AM ssc | Ute oop ANT | | 6 | contem — | soins Sameas | Same at Contin olf not epeat from Oke ‘ANT input 8608 | above above | 600kH? Dial Step 4 Dink Caibra- | S0or2(90% MOO) | Gliteaton ton AMSG Ute loop ANT + | consem — | sone Same as | Same as Conte AXTinput eae | Shove” | above Sacks ial ‘Soamet80% MOD) Caltoration AMG Ose oop ant ® Sameasstep5 | sameas | Same as Confem | tfnot repeat from step 5 above above WOOkHz Dial _ Dial Caibra Galoraton ton | 9 | costs — | ecu same os | sarant | sax. output Read. | ANT sods above” | 01 doors S058 MOD) AM sse | O8 ioop ANT yo | woowte | -wookate sameas | Sameas | trimmer | same as above Read |) ANTimpursods Shove” | above” | Cap Tbs dootintbox MOD) | AM S86 | Ufe loop ANT | ANTinput sande | Sbove™ | above Thdcation “of sgnai Selo MOD) r mete ‘ \ ober adjustment, i | Use loop ANT oreAt | Smeter swings out’ or fot enough, preadjust ‘Vor until the reason- able point Fig. 47 FMsignal AM signal amosc = (S—Nrorpuaggn (G35KH2) a FMstereo separation volume FM stereo indicator ‘vRo2 fo)” FF jscriminator transformer yr me [| Fmose teirmer (losmite) FMosc QT 1 i cam | (eS oth res { SI) oe {Baila reyes ‘Sine oan FoR IId So] Dow 10 om... 5. TROUBLESHOOTING CHART 5-1. Troubleshooting on Power Supply Section symptom Check Point 1. No power supplied to each section 441. Each lamp not lighted 1-2, Fach lamp lighted 1) |——a) +23V not supplied to emitter of TROS and +13.2V not supplied to emitter of TRO6 on F-1500 —2) +27V not supplied to terminal (03) ((08)) on 1499 3) =27V not supplied to terminal fii] (12) on on —4) Normal voltages supplied to each terminal on F-15009 7 5-2, Troubleshooting on Audio Section 1. Quick acting fuse open 141. Alter replacement, use apen again 1-2. After replacement, fuse not open a DC Bias current adjustable— | —2) 0 Bias current not adjustable |) Center voltage adjustable— Ls center voltage nt adjustable 4 2 a 4 6 1. 2 2, a4, 15, 16, w. 48, 19, 20, n Cause & What to Do Imperfect contact of power supply plug Defective power switch $703 Imperfect contact of voltage selector Power fuse F701 open FOS on F-1500 open Defective power transformer FO7, FO8 on £1500 opert Defective 205, 006 on F-1500 Defective TRO5, 7806 on F-1500 Defective ZD0t, ZD02 on F-1500 FO1, FO2 on F-1500 open Defective Dot, DO4 on F-1500 Defective TRO1, TRO on F-1500 03, FO4 on F-1500 open Defective 0 Defective TRO3, TRO on F-1500, F06 on F-1500 open Defective DO7, DO8 on F-1500 07, TROB on F-1500 Defective Relay RY101 on F-1500 Defective D05~ 012 on F-1500 Defective Defective TRO1, TRO3 (TRO2, TROA) on F-1500 Defective TROD, TR11 (TRIO, R12) on F-1499 Defective TROT (RDB) on F-1499 Set the current to )-19mA by VRO3 (VROS) Defective VRO (ROM) on F-1499 Defective 7805 (TRO6) on F149 Set the center voltage to OV by VRO1 (VRO2) fon F-1499) Defective TRO1, TRO (TRO2, TROA) on F-1499) Defective TROS (TRO6) on F-1499 Defective Dot, DOB (002, DO4) on F-1499 Defective VROT (VRO2) an F-1499 2, AUX inoperative Symptom Check Point 2.1. Both chanrels inoperative - 2. 2-2. One channel inoperative 4) Land R-ch will be operative when MODE switch is pushed in (t's KONO position) a3, 2) R-ch will be inoperative when MODE switch is pushed in ——— 18 as. 16. a. —18. L19, 3, PHONO inoperative 3-1, Both channels inoperative — 2. One channel inoperative 4) Reverse the output cords of Land R-ch from turntable | 1-1) inoperative channel reverse— 21. 22. 1-2) Inoperative channel not reverse. 2, bin 5-3. Troubleshooting on Tuner Section 1, Both FM and AM inoperative (PHONO operative) 1-1. Both channels inoperative 41) + 132V not supplied to terminal [C[E [F}on F-1491—$a —2) +13.2V not supplied to terminal [C)[f] on F-1491 2 4-2. One channel inoperative 1) AM section inoperative ————- 3 |.) FM section inoperative— = t—s Lig 2. FM Section "Before check, set MUTING switch to OFF (Pushed in) 2-1. FM inoperative only 4) Tune FM signal or FM broadcasting station |—-1) Signal meter operative (7 nestation oi 00 low compared : with proper unit) i Lo, 0 page 12 — Cause & What to Do Defective power supply section (F-1500) Imperfect contact of SELECTOR switch 702a (S702) Defective TROS (TRO6) on F-1501 Imperfect contact of TAPE MONITOR switch $01, $02, MODE switch $03 Defective BALANCE volume VR01 Imperfect contact of SELECTOR switch 's702a (57026) Imperfect contact of SP SELECTOR switch s701a (s701b) Defective F-1499 Defective power supply section (F-1500) Imperfect contact of the output cord Defective turntable Defective TROT, TRO3 (TRO2, TROM) on F-1501 ‘imperfect contact of SELECTOR switch $702a (S702b) Defective power supply section (F-1500) Imperfect contact of SELECTOR switch $7024 Defective SELECTOR switch $702a (5702b) Defective SELECTOR switch 5702a (5702b) Defective TR12, TRIS on F-1491 Defective Low Pass Filter LP-F.01 7. Defective CFO1, CF02 on F-1491 Defective FETO1, TROI~TRO3 on F-1491 Defective TROS, TRO6 on F-1491 Defective LO1~L08 on F-1491 Symptom Check Point Cause & What to Do irom page 11 (4.2) signal meter inoperative —— 41, Defective TOT, TO2 on F-1491 L212. Defective 1C01 on F-1491 43, Defective 703, TOs on F-1491 Defective 1C02 on F-1491 Defective DOT, 002 on F-1491 |F, RF out of adjustment on F-1491 Defective TRO7, TROB on F-1491 Defective 705, TO6 on F-1491 Defective D03, DOS on F-1491 Defective VRO2 on F-1491 21. Defective signal meter 2-3, Muting circuit inoperative. 22. Defective TRO9~TRIT on F-1491 (Signal meter operative) -23. Defective TR14, TR15 on F-1491 24, Defective DO4 on F-1491 125. Defective VRO3 on F-1491 26. Imperfect contact of MUTING switch $08 Signal meter inoperative — : (FM broadcasting sound can be heard) 2-4. No channel separation on FM stereo broadcasting, *Confirm that SELECTOR switch is set to FM AUTO. *Confirm signal meter operates | a) indicator lamp not lighted 27. Defective the indicator lamp PL7O1 128. Defective TR16 on F-14901 29, Defective TH on E1491 |_40. Defective 1C02 on F-1491 31. Defective VRO4 for indicator lamp on Fagot 32 Defective VROS for FM stereo separation on F-1491 33, Defective F-1500 2) Indicator lamp lighted — 34, Defective TRI6 on F-1491 3. AM Section 34. at 1) Interstation noise changes by touching the terminal [D) on F-13491 4-1) Increase = 35. Defective bar antenna 236. Defective 1220 on F-1491 [-37. Defective T11 on F-1491 |_18, variable capacitor shorted 4-2) No change 39. Defective D07 on F-14901 Defective TRI7~TR19 on F-1491 Defective T07~T09 on F-1491 3.2, Distortion: #2. Defective 006, D07 on F-1491 43, 1F out of adjustment on F-1491 3-3. Signal meter inoperative |-—44. IF, RF out of adjustment on F-1491 (AM broadcasting sound can be heard) 45. Defective TR25 on F-1491 446. Defective DO7, 08 on F-1491 47. Imperfect contact of VRO1 on F-1491 48, Defective signal meter a .:. 6. PARTS LOCATIONS AND PARTS LIST 6-1. F-1501 Pre Amplifier Circuit Board (stock no. 7550530 Complete Circuit Board F-1501) Conductor Side A B Parts List Parte No, Stock Ne Deseton Parse. Stock Na Desciption Posen ou070,1 ICIS BES) cu euanior oar ve 1 Z Se Gwcolor oie uh ts | nifon.2 asciafien Me numer ant 5x6 sow mc. A csslate,1 23ciat0(ct.m) ce Sons toner vA gouty! 28013139900) esos nari weet heer ce Cu asinios pare sr es ten | aadion.2 aseratleen Gr me“ 5 2 . 1 OH ae gov 8 coolego.1 2sciot8 (crm) ca sae a 2 0306070, 1 131: ud (9600227, 022 28 jongn Bosse eto Slat 7 28% sav Me. tre foscin,2 acSien 1s Gn teotate “Saat ie G a Ca culate Gane Voss» cn | seg twain ae te Sevres) of coe wv ce, 1 wo fesdlon.2 mcrae " tases tae me eee fe Ca Gaines Ga wv te 3 cools. asciee8(or.0) Co tans ganar ioe [our Basawie Ce bites poner ze jean ei 1e Ce 0600157 lguF 26 Tres ee ee Ce 0600157 ao1syr 26 caolaso.1-28C1065(6.1) Co toenail 2 0306070, | 2SC1313 B(F.G) Ce 600277 gozar) * 5% SOV MC. 95 - : Co tees “are 2 Tras joakonn.2 zacizzzte 9 2 Groote tae 2 cavdene.1 axciai8(or.a) Cis tose ane 1 Cie teste ans 2 co ome an ete 1 ee se aed Ge osisy ta} TE Ger aslo one svee 1G Ge oun apr 3 cu Gusset een fr olorsts sun 18 Go owaoist age 3 fe clos sun A Ce ouaosh tome tA fs Glo anny tsy uw ek ie Go ostorer tao 1A fos Glorioe tom : Parts No. Stock No. Description Position Parts No, Stock No Description Position Ru o1o7toe 10 1A Ro g107are a7 20 Ror oiovezi exon te Ro ciara? aa 1.20 Ros oiovezi 200, 1A “ ol. ana 20 Ro iors 220K. i Rs lon? aa 2 Rio ores Bam 1 Re lo? 20 mare an 1 ke roe amtlasw yw ce 10 Re mom? a 1A Re 1072 a 20 Ro onoraa 000. 1A Rv o107e24 ext 1.20 Rw o1o7aa) 200 1A Ro o1o7eze 2k 20 Ris ovarare a9 18 fu. ono7ia) 9002 Ie Ris 0107094 a9 1A Race 010710) 0000 te Ry oaraa a. 18 Rar, co 1010950 250402 (WN) 2c Ra 10773. tA Ve ce 1010920 250482 (8) x 2| Yersble 25 Ry olorios an Ms VRos, ce 1910960 Tout {ay x2] Foster 20 Reo 107108 to tA Vier, eo 1010960 100400 (A) x 2 20 Rx o1o7es geo. tA. ean a fe eae men sme KW CR Oe Se tise | 2A Re ee ea Se 1180770 f Push Switch (5 Stage) 20 Rs 1071s Teka 2A ae err a Re olorias eat 28 Ses 1130770 20 ee a ac Sot 1130780 Pash Swieh (1 Stops) 20 Re o1orsa) 3300 26 Re o1o70s. Ma. 1c Ro o1origs wae 2c Rx onorar2 art ic Re 172 a ie Ra ova7a7) 700 1c Abbreviations — ee 4E GR + Carbon Resistor BPEC: 85Folar Cestoine Re gnoraz4 20k a SR. Sohd Resistor capacitor Ru ovoraae 20K 3 Ga, : ComentResctor CC. nie Capacitor Ro ovorizg 1 1c.0 MER Metailzed Fim mic, ‘Capactor Re orm. 2c10 Resistor Oe. : Oiicapactoe Re onorare—a7OKLD 20 Mc. + Myler Capacitor P.G. 5 Polystyrene Capacitor EG. + Electrolytic cor TG. + Tantalum Capacitor 6-2. F-1491A Tuner Circuit Board (stock No. 7520730 Complete Circuit Board F-14914) Conductor Side Parts List arts No._Btock No, Description Poston Parte, _Stock Na Desorption Poiton Teo) euosen.2 ascr007(8.0) TA Gon s7182 on017F| vm vA The gost. zscr30(e-0) 1A Ge ossrz3otzzne| “BN HY Ce. The Ssosra.) 2sc9a01€.0) Vas Ga beaten ator 10% av co. ta Ths gosvz.3. 250798(6.0) in Gi amin ieee ga gOY CE ta Thee Gaott2.3 250708160) 18 Ga sree3 ncn FB Sov ce tA Tho sosnez'a ascriatcso) 28 So o6sn0s tage EozmF SOY Ge. tA Ths Guosnen's eeriale Fa Gis sree onzant “BN gov Co tA Ths Gaosran's aecnTeo) 1c et reas |e R The osrse's ascrN(e-9) 126 SMe Ms sav cc, 1 TR Gaeoart'2 asaarate.r) | Tominor Ze cl ieceteas vase i Ths Guoeet'2 Zaciaes 0.0) Fa a perenne ree Tes aula: 2. actos 60.8) rae a ean ee a te nsiat/2aseaea(e?) : oy dre Ths possi’? aecrasn 6.7 20 ie soul © er cnaicor Cot 1a Ris op00221'25ase2(v) 20 eat acum eel Sekhavice en Thr hoses scarac) 128 a . heigeerttec an Th (Soa Bewie(g fe Se Hated tt Soar sr co Tg TRe poster ascamnc) hac eee ye a TR Gosel 3Scan3c(3) co = ; i tase teats ay og 18 on Ic El therass—azaen ( * if i ie Stier ana 18 peg ee Ne Ca fasta) cane ihe De ostoue fee So fasrees rae ie Bu theme rode ae Sasa azave tec aon Bs SS otsrma acest ie eS zs ee eet pele ic er asia c 8 Do stata ee ch Sere Stuy re me 86STS ers ie Kea ouanen rar) ic 1c Co asm amet a Neer tasoneo — Hartao 1 el Tor caroneo.1_asxanc@.2)FeT 1 Site ee er ec te Sy tatreh gt 10% SOY Ce. TE cn oss BOSHF SOV Ce. BA Ce tata at By Ee Ie 1. bean 2 este? Senet Stee ana tose Pate no, Sock Wo Description Postion Parte No,_ Stock Doseription cH osizio —_—vaoy Ver 6. ce e4srera oat 2 Co aasransozant HH Sov CC 1.26 ce 6sr223o.e22r | +m sy co 28 Ce ogoviga bye «E10 Sov ME. 2 Ss mga Gowan 3 Go Gerais tp ate 2 Ge besrers Beret 8. Ce osioior ay te 2e Co asiaere er av ec. 26 Cu Gea ‘av re. to Ge Gsi2100 on lw ec 28 Co teiseon io Gm owoitde ome 10% SO ME. 1C Cae 0515939 HV EC ap Ceo 0657473 0.047 8" 2c Go bstziee tw ec 120 Co Oasraza Gna ie Co ostoton 20 Ce oasrams Goma} 18% sav co. aC Go estsaay ate @ Cs Besrams Saar ze Ge tsisaoy 1 Gu 06s7225 cane ac Gi Gsiston yr a ce opoiere court sor mc 2 Ca tecoler ater y me, 2D cu aasren “Czar av ce. 2c Ee ssnieytoreye] 8% YM. 5D fo beater “coe Sv Me 2 Sa 50082 00082H4) gee soy mae, 12 Co aasr22czant sv CC. 26 Cs Gaaoeas vena] * 20 co ag01077 dare av mc. 20 Ce Genoa nnogh 86 sov nC 2D Ge asratae Oar an te Tb co cuss cont TBR SOV CO 28 Gr ouaate int koaee SOY E18 Coasts ty avec 28 Go ubisd seh nioN Sov CE. 8 fe gee Se Ncwanctnw 12 %657479 9047" see coy ce, 28 GFL BBtoNsaSIEIOTMA Ncwome iter 18 EG) Shera earn] 2B% sv cc. FE oe Ge tana Seoeh 8K Sov nC a8 Gots “tawe Sieh ay CO 8 Te Bueno TEAM FOIacon TA Gu o6orta7 oie ie 426900 TKAG: . SH eorier nN) Sram sav me Ta Masse mmacaiazeansinw 1 ee to Tos 4235760 MIKAC~21229S8S [Discrimination 1C Cu ossrams oozayt TH SOV CO. Tes 4255770 TKAC-7I3998 28.c eters Ci Gor asiziea tot ey Ta tgsopTrAca140008 2 oa 0657473 G.0aT nF Xap% SOV CC. To opioreo = YRL-«5SE2 ymic Filter Co t480150 Néghk TON SOV CO. Te faaoel Lanes) Tay ry 0657473 G.OW7H tI06¢ gay ce. To 4230500 455itie (Blue) 7 © bas03 can) 2 To faamaea—Sapetas "at osc cat Se tas0w70 EF iow sav co. Th fad Taine en ca F-1491A Parts List Parte No, Stock No Description ition ria No._ Stock No Descrition Pasion tor 4200870 3904670 Anwe Cal_ 1A fe goats AO) Asx Yow Ga. 120 tee Aztazaa 3.304671 ate Cal TA fe ose! San ek} 10 ts fazo4ao EMOSC cot a " M8) eg yweee 1B tet 290110 Paoting Col Ri otoraa Ann] *5% MW SE I tis Hamano spt Peatng Cai aA Romesh on) 25 tes 4290010 By eating Cai fo tlonase snl egx yw ce 20 tes faaario PH cot 19 Rau Oloasee ath eit) 20 UPFov 0910220 B14. Low Poss fer 20 Rs nnasss2 33k 20 fis ios Gath sme KW CR 2D Voo1-0s 1220150 Verte Copctor 2A Ry please sen 20 Re Olestst eon 15 fo glorize 20k) ge yy ‘A Ro lowers anh hae fe gion oon] #8% MW Ce Yh Re 01049910 to feo giouzaz 22M) 56% WCE TA fn auasies ae a fu Sioeize 1200) tenes 1A fr rowse ann 8% EES 20 fos gieriz ea. 1A Ro oleae Sauk 20 fu orariss, abs sw ce 1A Ru oveease Sk 20 fo —blorat aan) a Re oloaase sak 25 foo Giouzze aah SH YW CR TA Re oto Sak 2 eat) Rr Oldsiee Tene. 20 Ro guava) 220 EK WER 1A er Ro Giese in fe oz = mn} 8% Pi Ro gieara) 2001 th fo Olaaest sean 128 Re oloatan ae 5% Yew CR A tee asasd a) 2 ox yw ca 128 Rs oioeee2 ak (LR) A Re ios? ete) Ze fe Gieetse Te. 1A fu ela nok 3 Ris lor ANS MW CR TA fs flay Ta, 2 Ru gioeawo 9 in Re lori? bes QW CR 2B fo oleae 1 fe ola aa a mm oloenat 20D a ge yw ca 1B fe Monee 78 fr tose tin 8% MESS ig fe Giosan apo Lae fo gisstaz 3.310 ib feo ciated. Yoh ze Ro glosion i fr rosin ese x ce 28 Ru Sionssl ON) BW CR fe elena “eG 3 Res glossed. LESAGE Ae fs gieeizi zon R 7 oy (ent) Be olasesi 200) hae eater 2M ge aw ca 18 fm omit see Kw cA tee Roane ia} S% OH CR fr aleeie a0. ze fe oloaasa, 8. 8 Re aigetss ta : a8 Ro onasten Nese yw ce 1B Rr oraear2 an #8 MCE 35 fo oiasian ene) 18 Roo glosia? 28 Rr otoasso SHR 18 Rion o107221 22002) 26.¢ Re Sim) SK HW CR 18 Rin Gie7ez2 aba sm Mw ca 20.6 Bs ash EA) 5 aw Ce Te ior ereriet oon ae owed EL) 18. Roa oloee? AO) swe MW ce IC mim oud sx ywiee lee te oon fan) 7% ESS Ze Re Giousen SHAD) 28% Jy Ga Ie Rie Oloasei Seok 1c fv Guage 200) (el 1 Ro Sloe 700 5 hac fe orm 2D) a ge yw ce 1 Re oasis tang #5% MW CK ac giana 1 e106 2 Ro bierial on SH WW CR IC te olnnos amy ae Bi Shower SM] fin cionor toon} 5% KW ce Ge Ra orasten A ES CEC mn olosiee A 6 KW cH Te Ro olaetee af re ‘els ee ee ae i is olowe 47 #8 Kw ce Bs oun a 8 WER ye Rn Goins fala SN ew ca 2c Re Staats 1a ie 5 < ae : Rus oloaz 2k tS YW CR 2 Be owsles MTs Hw Gk 1 Tag tonsa gral x po ee eae Riv loan ah 2c fe omy 7 5% UW CR Fe Rm osioo tony as Mw ce 28 ee) 555 iW CR 2e ae al nee | ‘eh Rin olgstea 10k 26 fe Glows a ea) 25 Been AY ae a ce 26-8 Vrs jossiso 2.0) 2c Ra —groraai 2200) - 36.8 Van 103sis0 22008) 6 a 25 fe twas aS MW CR I vrs 1ossi90 rout} Seman 8p eu) Vist 1038190 100k0() 15 Bem a oe ew ch 12° vrs to3s070 Hk) 1 Re tte 30) x 20 So 1110240 Side Such 7 6-3. F-1499A Driver Circuit Board (stock No. 7570800 Complete Circuit Board F-1499A) Conductor a snug 2seza = =e ‘Roe 0300303,5 2SA640(K.0) 24 C2 0660100 10pF] eeteeeceeseere cee TRos 0305901,2 25C1124(2.3) Transistor VA. Cie 0657473 0.047 uF 2A Tes tuosmo.} aetiaec) m fe orgrge ton a TRH 0300399, 1 284706 @ (1,2) 28 i 107104 ae 2A ea Ros 0107222 2a 2A De e009 05-490 | 1A Ros crorios = nomen = 8% HW CR 1 Q cosa) ae 2 Ge tscss tarp YS Abbreviations cman tl YEE GK GR Gutman rcs prin eno Qesaion THN stems Sov ce Gah. : Cemeniteter Gee. + ctamic Captor 0515330 say] SVB ae Pe. F-1499A Parts List Parte No. Stoke ‘Descrition Position Ra 17st 1A Rn 107i tan, 1B Rw o1o7ton_ ta. 1A Ris o1o7t00 to. 16 Re 1709-100. ivy Re oterisa sina sss saw ce Te Re O17 1. 1A Riv 07682. 18 Ra 107426 1A Rar 0107104 Tome. te Riz o1o7ioe 3008 1A Ra otories, 10 128 Ra o1o7ios. toa 124 Re olora7i 70. 2 Ru = olgrari_ 700. 2A Ry = ona7te2_ a 18 fe nortaz 1. 1” fe 1072, 4. rf Re 102 ah 1A Rov olo7s a8 1B Ree ors ae 1A hes 1073923 18 fu o1o7as2 8. 1A Rs 10s? 1M 18 Re oon? HO wy ce TA Re» —oronist tana 5% MY CB gg Rooms son. 2n Royton tanh 2 Ro orarion, 10. 24 Ra onorag 47 22 Ree ona7a7g 470. 2A Ra oor) 00. 25 Ru ovr) a0. 2A Res o1orazi 2200. 28 Rus onvzzi a0 2A Rw arora a7 26 Re gomare 470. 20 Rs olarz) 00 26 Re orm 0. 2A Ra ovo 100 28 tengo tan} MO MME 3g Ror aso! 5108) Veo 0ss091 31108) Vier 0x05 181) Vics oases 140) sr Car. mere me. ee. -Abbrov + Solid Resistor Mylar Sacacitor jations: oc. tor Sarai ca 2 OllCapacitor = Pelvstyrene Capacitor Tantalum Capacitor 6-4. F-1500A Power Circuit Board {Stock No. 7591930 Complete Circuit Board F-1500) Conductor Parts List Parts No, Stock No, ‘eseription Position “TR 308630-2 25C1090(A, 8.6) te Thea 0905630-2 25C1030(4.8. 6) 1A Tos 0305680-2. 25C1000(A. 8.0) de.8 Thon 305680-2 2SC1090(8. 20) | ing TALS Tres o30se61.2 asca7s(en (MN 29 Tos 9308961.2. 280330(0.8) 2A Teer 9206191,2 25C1364(6.7) 24.8 Thos g06131,2 28C1864(6.7) 24.8 Dor a10480—100¢+1 rec De 210680 100-1 2.6 Ds ogi0470—100c-1 «®) hac Dos 90670 —1006-1(8) 2c os 0310540 100-1 28 Dos 930240 100-1 | oyaue 28 De aatena 100-1 28 Dee 910040 100-1 2A Des ogte4ad NAA 2A 1% 9210400 INGEA, 2a De ogi0400INGEA, 2a. Die ato400 NSA 2a Boe GEA} HIME) ay 20 ZDer 0216420 -2024A-N as eee cee eee ee Cos 0815470 47) 2A Rio 0107473, ang {* 5% MW CR yoy cn 0530470 are 6aN 2A Ry 0132338, 0332 PW Gok Rov 0132620 een IW Cok. 2A Fos 0432820 0.8 Wired-in Fuse. 20 6-5. Other Parts (Front Side) Parts List Foret e Deneoton Pareto Bock We = 1 Srn6s tiling Had Seow, ara Ca aeons 2 Siesllo Plan Wener G5 Tr1s0s) Movs lamp Any 5 SIO1SS inetd Stn, re $—(at0610 Spa re 4 Sieslto Pan Wes 9) Gites een on 1008 8 SSE Se oe ee eee eet 0 een G9 Shosza nn at Tying Seon M8 Ce ee Jo crate Raw ype tone OV 008) oe at | vente 72 Sons? tain ed Tope Seow MOXE oe ee 73 nt ea oon 13 Shr70. Sa ype ob, AS5 valone 75 SiON61 Bang Hed Seow. Ma 77 5317740 S-3 Type Knob, TREBLE volume I ao ie ee fee — exe 16 Sem TetyeetmetNng 7B SSE te Wo S770 ATs Ka, YOUU fo Ssentt—tawer ror ST Sost20 _tonen howe 1 sau Type tb ECTOR 2 ton Nee 2 ssausto_rantanon 22 Siea563 Fat Comirsik Hod Som, MEXE 23 Sized Pat Comarn ot Se, Mae 20690 Fon an! 24 fllorsio Ouse 25 “SO1043 —_ndng Hood Sew, MOE 36 Solos) Sng Hood Sew MO 2 Sloloes nn Hed Soon, Max 2 Sioioss Sangre sures ee 2 Buse Sets 30 S00900 rom soled poe 31 Homes fer Boon PONE tc 32 Unc Spn, POWER uch 3 Tiss) po Sen POMER a fen No Fa rsa Wea 99 361401700 teephore net 3 Sneath Spent x oe ver 36 310170 sry Sek -44,SEAKES 2130780 ton Sh 4 vow a me Veh 86 3 so1orso—fo0ud (2 BASS Yolene a feo S Pn Woah 89 GS tooxso tom (2 RE ohne S fet & Pn ver 82 2 rojonso 2500 (uN) BALANCE Volume $0 dzkest Scere a an oo 88 2 toiono sen wxe oun SS aero tan Soten(e Sea) 5 sist Soce nen 50 Tons) ory Sach 264, SECTOR 3 rosto Tony ay a Theat Du Pome G1 Sopi2a Sinn es Topping Screw MAE 2 Stont2z_‘tindng Hood Toping Som, MBX 3 u9080 Hove slot ee 6-6. Other Parts (Top Side) 12 Input Terminal Ground Terminal Top Side Parts List perks tenner == or = tage ean wr = toe ie ce enn 2 ge ee RE eee fame an So Ha oe, eee 2290100 Speater Terminal ims lorie Mek) es Mw ca, ale, She ee Rror o1o7122 wD. 2220050 Ground Terminal oa Bees 23 6-7. Other Parts (Bottom Bottom Side Parts List arts No TR Ree Thos TR cn Foe sey ‘Stock Ne. w00s620-2 005690-2 n0sea0-2 onoses0-2 oosse02 arian avian oaiz70 0431280 2300060 2430020 ‘0020, 22so0s0 cn +28C1030(4.8,.C) = zeciowns.©) on -28C1030(A.8.c) ( Tonsintor peintoiane) me te cxeopr tay Ke. 00) 200) sok 1 w cae 4A rower Fate (100~1179) 2.5 Pawar Fuse (200~2408) Fuse Holder eadhone Jock Power Cord (Ground Terma ‘carson Resistor Sola Reset Mylar Capacitor 1 Electret Cazactor Appreviotions—= BPE: Bieler elctaic Ce. + Ceramic Capsetor Oe. | Oileaprcitor PC. + Polystyrene capacitor Te. | Tantalum Cxpactor r 7. SCHEMATIC DIAGRAM OF TUNER SECTION * Design and sepecitcations subject to change without netic for improvements. 152 without noice forimerovements ~ Design and soscincations subject to chan 9. PACKING LIST ste Devcription 19017930 twa Peking (poe) 2 9027770 Stylotoan Poking 3 $007530 Corton Case 10. ACCESSORY PARTS LIST 9406020 Polsting Cot (0433680 4A Quick Acting Fone 7207900 Operating Istctons 9227900 Operating Insrution Shot 11. MAINTENANCE 11-1. Voltage Adjustment ‘he Voltage Selector on the rear panel enables you to operate at correct voltage in any areas. The voltage has been preadjusted at the factory, but can be easily changed as follows, in compliance with to the line voltage using in your area 4) Remove the two screwse securing the name plate on the unit’ rear panel then remove the name plate. 2) Unplug the Voltage Selector plug once, and reset it so thatthe arrow mark on it faces the corect voltage indication. Also change the power fuse when the power supply voltage has changed, For 10/117 volt operation, use a ampere glass-tubed fuse. For 220/ 240 volt operation, use a 2S-ampere one. Note: The Voltage Selector can be used to eliminate the trovile caused iby the considerable voltage fluctuation. In this case, it should be set to the peak voltage W7v 220V fe) jets 26 RIC CO., LTD. ‘sMO09

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