Scott-R316-R316L-R326-T526-T526L-Service-Manual 电路图 维修手册.pdf

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1、1-111 1-IIIL 1-111 price $6.00 SERVICE MANUAL stereo components T-511 T-5ZIL en SC OT T . where innovation is a tradition H. H. SCOTT, INC., 111 Powder Mill Road, Maynard, Massachusetts 01754, Tel. 617 897-8801 RadioFans.CN 收音机爱 好者资料库 Output Power AUDIO SPECIFICATIONS R316, R326 R316L R316 20 watts

2、per channel min. RMS at 8 ohms from 40-20,000 Hz with no more than 0.5% total harmonic distortion. R326 30 watts per channel min. RMS at 8 ohms from 40-20 ,000 Hz with no more than 0.5% total harmonic distortion. Input Sensitivity Phono Mic. Aux. Tape Recorder Signal-to-Noise Phono. Mic. Aux. Freque

3、ncy Response. Phono Response RIAA Phono Overload. Max. Input Signal Phono (IHF) Input Impedance Phono Aux. Tape Cross Talk 1 kHz 10 kHz Rated Harmonic Distortion R316 R326 Intermodulation Distortion R316 R326 15 2.5 mV 6.0 mV 160 mV 160 mV 60 dB 65 dB 75 dB Hz to 35 kHz +l dB 60 mV 42 dB 47,000 ohms

4、 60,000 60,000 ohms ohms 45 dB 35 dB 0.5% 0.5% 0.15% 0.1% From O. 5 Watts operating. to rated equivalent sine wave power at 8 ohms with both channels CONTROLS Bass Control Range. +10.5 dB (1 dB) 100 Hz Treble Control Range. +10. 7 dB (1 dB) 10 kHz High Filter 3.5 dB at 10 kHz +l dB Low Filter, R326

5、7.5 dB at 100 Hz +l dB Loudness Comp 3.5 dB at 10 kHz +l dB 7.5 dB at 100 Hz +l dB RadioFans.CN 收音机爱 好者资料库 FM TUNER SECTION Usable Sensitivity Mono Stereo. 50 dB Quieting Sens. Mono. Stereo Signal-to-noise 65 dBf Mono Stereo Frequency Response 30-15,000 Hz Mono Stereo Distortion 65 dBf Mono Stereo.

6、Alternate Channel Selectivity. Stereo Separation 100 Hz 1,000 Hz 10,000 Hz Tuning Range Deemphasis (switchable) Tuning Indicators Interstation Muting. Stereo Threshold Muting Threshold Antenna Input 7.0 dBf (2,5pV) 24 dBf (18 V) 10 dBf (3. 5 V) 36 dBf (70 V) 68 dB 65 dB +2 dB +2 dB 0.3% 0.5% 52 dB 3

7、6 dB 40 dB 34 dB 87.5-108.MHz 2 5 , 50 316L and T-526L are designed to tune two AM frequency bands. See tuning ranges listed on page 2. In model R-316L, band switches replace FILTER AM and FILTER MFX. In model T-526L, band switches replace DIM switch and DE-EMF switch. 5 TEST INPUT CONTROL TEST SCAL

8、E MEASURE AT READINGS TOL. SETTINGS EQUIPMENT SETTINGS POSITIVE PROBE NEGATIVE PROBE NPN None Triplett Ohms + Filter cap P809 9K +lK - Output Unit 630A X 1000 P806 transistor OFF11 Q807 Note 3 dB - dB Flat increase. Volume Frequency to 100 Hz; +1 dB 11 Oclock Note 7 dB increase Loudness Sw. on Cross

9、talk Aux. Selector AC VTVM 3V Speaker A Speaker A Set output for O dB Left Aux. L G Channel Tone Control 8 ohm load high 8 ohm load low Read right channel Min. 10 kHz Flat output 35 dB down Comp. Sw. Off Volume Maximum Mode Switch Stereo OJ TEST INPUT CONTROL SETTINGS TEST EQUIPMENT Balance Aux. Sel

10、ector AC V1VM Control Harmonic* Distortion Aux. Tone Control Left Channel 1000 Hz Flat I Aux. Comp. Sw. Off Volume Maximum Mode Switch Mono Balance CCW Balance CW Selector Aux. 20 Hz* Mode Switch 1000 Hz Mono 20,000 Hz Balance ic(R316 208 220 pF dummy Keep signal Output antenna level low. 2. Same as

11、 above Same as above 600 kHz Same 600 kHz Same AM J1W Osc. Adjust for calibration T203 3. Same as above Same as above 1400 kHz Same 1400 kHz Same AM J1W Osc. Adjust for calibration Trimmer AMl (F .E. assy) 4. Same as above Same as above 1400 kHz Same 1400 kHz Same J1W R.F. Adjust for maximum signal

12、Trimmers AM2, AM3 (F. E. assy) 5. Same as above Same as above 600 kHz Same 600 kHz Same J1W Antenna Adjust for maximum signal slider under (soften wax, then reseal) bracket (See figure) 60 Repeat steps 2, 3, 4, 5 for maxinrum. 7. Same as Step 1 300pV 1400 kHz AM 1400 kHz VTVM is so ;is 25 S referenc

13、e at 400 Hz, switch modulation frequency level as follows: +l dB 13.7 dB 9.5 dB 4.5 dB REMARKS Generator output to zero. Scope Vertical to Pll6. Muting on (19 kHz Osc. adj.) Generator output l.OmV Note waveform is synchronized Adjust for maximum separation unless circuit component rAN AHT7 r ANT7 EX

14、T 8NO r3COiGN0 75 ANT COIL FM RF B Rl!S2 C2 . ,eop tPl Io u - Pll7 I PI02 Rl04 IOOk R 212 t 7 0 + m 14 RIOI 220 SCHEMATIC DIAGRAM TUNER SECTION R316, R326 . : 0 .: l.!SK + rX CENTRE METER . ., ! 0 -. ?;-., . I- I . 0 :; :; 4 a: MINI DIP . 0 .: T p I 5 OEM.LM703 I HIGH INPUT 2 GND 3 LOW INPUT 4 NC 5

15、OUTPUT , e+ 7 DECOUPLING I NC !; . . 0 .: 0 O ! 0 Pll!S ,. ST LAMP ,. ULN f. (IIJ CIU -: 13 II CM . I/SO 01-llfPMiflSIS SW L_f_,.,-.,i_ TO P901 12V 40mA JEDEC JC IOI ,re 102 TO 78 IOP VIEW Q I .4-001 REPLACE WITH H.H.S. 4-007 or JJA 703 4-008 I DECOUPLING 2 NC 3 HIGH INPUT 4 GND 5 LOW INPUT I NC 7 O

16、UTPUT 8 B + . _j PIN4fo 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 TUNER SECTION SEMICONDUCTOR LIST QlOl, Ql02, Ql03 Ql04, QlOS . Ql06 . IC101, IC102 Q201 . AM Integrated Circuit Multiplex IC . CS 9016G or SE 1001 2SC 374 or CS 9014C 2SC 374 or CS 9014C LM 703 or A 703 2N 3823 or JF 1033 pA 720 A 758 or

17、 ULN 2244 DC VOLTAGES AT INTEGRATED CIRCUIT PINS IC101 IC102 A 758 1.4V 1.4V 3.2V 4.6V 1.4V 1.4V (station) 5.2V 0.9V (mute) ov ov 4.5V 11.4V 11.4V 4.5V 13V 13V 5.0V 12V 12V 13. 7V ov 1.51 (mono) 2.8V (stereo) 2.SV 1.8V 2.7V 2.8V 2.SV 2.5V 13.7V 15 pA 720 5V 7.3V 7.4V 5V 0.2V 12V 0.8V ov 01 0.7V 0.7V

18、 0. 7V 12V 13V PIN# 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 TUNER SECTION SEMICONDUCTOR LIST Ql0l, Ql02, Ql03 Ql04, Ql0S . Ql06 . IC101, IC102 Q201 . AM Integrated Circuit Multiplex IC . CS 9016G or SE 1001 2SC 374 or CS 9014C 2SC 374 or CS 9014C LM 703 or 11A 703 2N 3823 or JF 1033 pA 720 A 758 or U

19、LN 2244 DC VOLTAGES AT INTEGRATED CIRCUIT PINS IClOl IC102 pA 758 1.4V 1.4V 3.2V 4.6V 1.4V 1.4V (station) 5.2V 0.9V (mute) ov ov 4.5V 11.4V 11.4V 4.SV 13V 13V 5.0V 12V 12V 13.7V ov 1. 5V (mono) 2.8V (stereo) 2.8V 1.8V 2.7V 2.8V 2.8V 2.5V 13.7V 16 pA 720 5V 7.3V 7.4V 5V 0.2V 12V 0.8V ov ov 0. 7V 0.7V

20、 0. 7V 12V 13V rNlt AHT7 r Flt4 IHT7 EXT GNO rOO 1 GHD ,-N N MW Fllffl RetiS t:llCe 0hr1s _10/, 1/4 watt-,rap;Hit:rnr-c in microfarads, unless otherwise specified, Arrowbc;:ids indicate main signal path. Unless otherwise specitied, all lJC voltages +15% measured with respect to chassis ground, usjng

21、 TVM, power line 120V AC, 300 ohm extenal antenna terminal terminated with 300 ohm resistor, tuner off staLion and input selector in FM position, AM voltages measured off station with selector in AM position. 13V OUT DC Offset Voltage p With no signal applied, read O volts _:25 mV at speaker A outpu

22、t terminal (25 mV is 1.25 mA on triplell 630A 12 mA scale). Bias current of output transistors is measured as follows: Set VOM to 12 mA range. Measure current across boLh 0.27 ohm resistors on the driver amplifier board. Read 1.2 mA on triplett 630A on 12 mA scale. Use same procedure tor other chann

23、el, Allow 5 minute warm-up before adjusting bias. (See also Test Procedure.) FM AGC Voltage (Front End AGC Terminal) +.10 to -2.lOV with O to 100K V signal fed into 300 ohm external FM antenna. The following controls in the left channel are mechanically ganged with identical controls in the right ch

24、annel. BASS, TREBLE :, !:!.-! -f-C.,0819 -,6V 1861 A86t . 0 4,- , - u - SCHEMATIC DIAGRAM AMPLIFIER SECTION R316, R316L 2A K40141 Delete filter switches MPX and AM. Add band switches LW and MW shown on schematic diagram, tuner section of R-316L. 19 TAPE OUT R70I L 82K TAPE OUT R703 R 82K R702 220K R

25、704 220K TAPE IN/OUT L IN R IN TAPE 2 IN z 0 I R711 -.: . -.CJi-t-_pil .- - R709 IOK IOK m R AUX TO FM PCB Pll2 PHON0 PHON0 L MIC I. +13V NOTES: R326 NOTES !MJ (Ml -:-7 i ., . K40150 1, R(Bi:t,i.ict in ohms _:!:(;0/ 1/4 1;13.lt,capacit;n1cc i11 microfnruds. 11nl0ss othr,rw:isP spc,:ifjed. 2. A.rro.J

26、l1b1ds inJicatc main signal psJt f:erminal trip!r.tt 630A 17 n,A .), - 5. Bias currL11t of trcrns:istors is measured as follows: Set VOM to 12 mA range. Heasllre c-urrcn. ;H-rn.J., ALX (Front u.:c,cks shrn.-m rnm Knob end and rear decks shown from end opposite knob.) 9. Power .,witch is meclwnically

27、 ganged to speaker selector switch. 10. Indicator lamp for LW and MW in long wave models are wired directly to AM P.C. board. 11. Spll.aker , 2.5A Normal 1ilow IN Di.sl and Funcljon Lamp Inwer F-1 Suitable lengths of ft38 SWG copper wire (0.006 in2h, 0,15mm cha,) 100-120V , 2.SA Slow hloting time do

28、lay typP Power F-2 , 220-240V 1.25A Slow blowing time dfhy tvpc Time delay type -3.0A. Pigtail leads, wired intnn.1lly. (May not be used in all production units) 20 TO PIIO OSC KILL TO P2I0 AM RF B+ DECK 2 MUTE - -n- FROM PI05 FROM P207 FROM PI03 FM METER AM METER FM AGC / SIGNAL METER TO Pll7 FM RF

29、 B + +32V OUT LAMP RATING I2V 40mA I2V 40mA ev soinA ev v I !: I : . .Jl! _ _J !E -=- 47pF VR 604 8 100 I( +32V IN P8II . 0 N +29V 0802 0803 MA 150 K40148 21 LOW FILTER C705 HIGH FILTER C7l4 0033 . .- z o i-=. C715 n , .0033 SCHEMATIC DIAGRAM AMPLIFIER SECTION R326 r F5 2., A ID J: 0: w t w a. ls) l

30、s) ls) w 0 0: N 0 0: AM AHT FM AHT EXT GND 300 GNU 75 ,UIT COIL ,._ .;- 271 c zor 13 f J_ C 1.10 l_ oor 1 Q lOl 1111 H23 Ollt 6 10 a ZOI L,- j ,: -i!LOWR ;_!,_ : : : a I, 1o I o I ,. t 12-i-+- C211. I/ )0 + 0 . AM I+ I+ . en, i CZ21 ; 0001= a, . 0 0 N N 0. U . o . _ 1 0 0 a: C: 1l ;: ;f; . . 0 ;: -:

31、 cm ,1-12.!_ SIGNAL JMETERl 17 I ,t FM ! AM I 0 n ru ii . . :1m o., H OUTPUT LEVEL DC VOLTAGES AT INTEGRATED CIRCUIT PINS - CENTRE TUNE TAPE OUT METER SIGNAL i9tt . . i . !(; TUNER SECTION SEMICONDUCTOR LIST R-316, R-326, R-336 .fl, in long uave models are wired directly to AM P.C, board. 6, Fuses P

32、ower F-1 Power F-3 Dial and Function Lamp F-2 and F-4 100-120l , , 0. SA Normal blowing type 220-240V . 0.37A Normal blowing type O. 75A Pigtail normal blowing type, wired internally. (May not be used in all production units) SuitcJ.lile lengths of lfa38 SWG copper wire (0,006 inch, 0.15mm dia.) D!0

33、7 ICD 0000 ,_ 0 ;: TP 0 !1 ., . 0 0 i: a: MUTE ST CAM ST LAMP IZI/ 40mA RECTIFIERS IA IOOV FM B+ II ,. 13 !1 T,P . II Cl31 Q32 roo 1.:1u!5-b 12 lA.N 2244 OR UA 7,1 1/50 ,t r;:;:r- 7 ;: ! ,. N N . -GND kill o,. 10 I ,_ ., u . I.; ; I; . !1 N . D-fMI .: + c.1.34 . Q.0047 X )X2 I _l i -, _, :! ., . ;:

34、PUSH SVf P720 P721 ji!Flf!p 0 I LL.l f=i- v L.=.L P722 AC TRANSFORMER , P/N 35030 - SELECTQIII 8 . . AM B+ SI g SEL!CTOR LAMPS av 60mA METER LAMPS 12V 30mA m MINI DIP I 5 8 OEM.LM703 I HIGH INPUT 2 GND 3 LOW INPUT 4 NC 5 OUTPUT 6 B + 7 DECOUPLING 8 NC - JEDEC IC IOI ,IC 102 TO 78 IOP VIEW 4-001 REPL

35、ACE WITH H.H.S. 4-007 or /IA 703 4-008 I DECOUPLING Z NC 3 HIGH INPUT 4 GND 5 LOW INPUT 6 NC 7 OUTPUT 8 B + :t m s: ) -I () C, ) G) :0 ) s s: 0 C, m r z 0 -I CJ1 N 0, .i:,. CTI PIOI P102 P116 . ANT FM ANT -y 1-TP- flCT GNO GNO ?:I 21- J - I. ., o 0ih =: i - 22 (E) 14 UL 13 II 12 -4 2244 DI - E MfJHA

36、SIS SW j,J.-;- in a. C234 -o-1 a. .J 0.047-=- .,. AM 8 + RF f ill 0 . . - 0 z . AM METER g ? ! MAXt;-;-IWTIIT . ;:-Q-IVST L MPX 01/T j $ l - l Jf I NOTES: r I ! . L 8+ SIGNAL rMETER7 LCH RCH -f r I MUTI 1 . c)? , , I 11 9 _ _11J x J _ ?-=i ._j j L; _ J CENTRE TUNE METER 14VDC METE METER LAM KILL I :

37、? R 903 ST LMP t2V 40mA - RECTlflERS IA IOOV 0902 ; c,o;Jl- !i-1 ld 11 V :-, Ii!: I 00I Efi JU 01 IQ QI IQ 7: , _ .J L _ J L-.i: 1 A.M FILTER FM I FILTER I MIST -: T526/T526L NOTES OUTPUT LlL TAPE OUT TUNER SECTION SEMICONDUCTOR LIST R-316, R-326, R-336 . . 2. Unless otherwise specified, all DC volt

38、ages 15% measured with respect to chassis ground, using VTVM, power line 120V AC, 300 ohm external antenna terminal terminated with 300 ohm resistor, tuner off station and input selector in FM position, AM voltages measured off station with selector in AM11 position, 3, FM AGC Voltage Front End AGC

39、Terminal) +,10 to -2,lOV with O to 100K uV signal fed into 300 ohm external FM antenna, Ql06 . . . . . . 2SC 374 or CS 9014C IClOl, IC102 . . LM 703 or JJA 703 Q201 . . . 2N 3823 or JF 1033 AM Integrated Circuit JJA 720 ILrI 4, Rotary Switch is shown in maximum counter clockwise position (Position 1

40、). Positions are: 1. FM 2. AM 5, Indicator lamp for LW and fl-/ in long wave models are wired directly to AM P.C, board, 6, Fuses Power F-1 Power F-3 Dial and Function Lamp F-2 and F-4 , , T201 (Yellow) T202 (Orange) T203 (Red) T204 (Red) T205 T206 (Red) T207 (White) T208 (Blue) T209 (Black) T210 10

41、0-120V , , 0, 75A Kormal blowing type 220-240V , 0,37A Normal blowing type 0,75A Pigtail normal blowing cype, wired internally. (Nay not be used in all production units) Suitable lengths of #38 SWG copper wire (0.006 inch, 0.15mm dia.) LONG WAVE TUNER SECTION COIL IDENTIFICATION MW R,F. C235 LW R,F,

42、 C236 MW OSC. C237 LW OSC, Non Adj. R,F, 455 kHz Trap I.F. I.F, Detector Whistle Filter LW R,F. Hi End Adj. LW OSC, Hi End Adj. LW R,F, Hi End Adj. PIN# 10 11 12 13 14 15 16 Multiplex IC . . . pA 758 or ULN 2244 T-526 OP VIEW 5 OEM.LM703 REPLACE WITH I HIGH INPUT l! GND 3 LOW INPUT 4 NC 5 OUTPUT 6 8

43、+ 7 DECOUPLING I NC TRANSFORMER P/N 55050 JEDEC TO 78 Q I MAIN :c m s: ) -I () C ) G) :0 ) s: s: 0 C m r- z 0 -I 01 II.) Cl) r- ., .4-001 llH.S. = or pA7O3 I DECOUPLING 2 NC 3 HIGH INPUT 4 GND 5 LOW INPUT I NC 7 OUTPUT I B+ DIAL CORD STRINGING INSTRUCTIONS RECEIVERS 1. Set tuning capacitor plates ou

44、t (minimum capacitance). 2. Tie dial cord to pulley boss A. 3. Wind one turn of dial cord around tuning drum counter-clockwise, as viewed from rear of unit. 4. Continue over pulleys B, C, D, E, F .:;:;:;,!1; . :-: POWER BOARD NO. K40141A MODEL NOS. ASSY. NO. R316, R316L 100-1335-023 MAIN AMP BO. LOU

45、D, FILTER . . - . :-: _.: _:_:_._._ :_:_. - .-:.:.:. iJl!i 30 At?t :if.- FM TUNER BOARD NO. K40145A MODEL NOS. R316, R316L, R326, T526,T526L ASSY NO. 100-1351-004 AM TUNER BOARD NO. K40146A MODEL NOS. R316, R326, T526 31 ASSY NO. 100-1351-003 H.H. SCOTT PART NO. 011-1004-03 l 011-1004-032 012-1020-0

46、04 012-1021-001 012-1021-004 012-1023-009 012 -1023 -011 012 -1024 -002 012-1024-014 013-1031-005 013-1031-008 013-1031-009 013-1031-011 013-1031-018 013-1031-025 013-1031-030 013-1031-031 013-1031-032 015-1061-014 015-1061-015 016-1092-037 016-1093 -04 6 016-1093-049 016-1093-050 016-1093-051 017-1095-038 017 -1095 -039 018-1100-178 018-1100-179 018-1100-180 018-1100-181 018-1100-183 018 -1102 -16 2 018-1102-163 018-1102-165 018 -1104 -099 018-1105-113 018-1105-114 018-1105