Technics-SUX33-int-sm 电路图 维修手册.pdf

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1、ORDER NO. HAD8605521C8 Service Manual Amplifier SU-X33 Color (K). Black Type Stereo Integrated Amplifier . Continental Europe . Holland . Belgium . France . United Kingdom . F.R. Germany Italy . Australia . Asia, Latin America, Middle Near East, Africa : EeAGsY) Power consumption 170W Input sensitiv

2、ity and impedance Bawersusel PHONO, TUNER, CD, AUX, TAPE 150 mV/22kN ase nee meeanaeres Heoney a fated 80 For continental Europe AC 50 Hz/60 Hz, 220V oe eee TER en ASABE For others AC 50 Hz/60 Hz, 110V/127V/220V/240V : = =e : 85 dB (IHF, A: 90 dB) Batteries (Remote-control transmitter) DC 3.0V Fr _

3、(2 “AA” size batteries, R6 or equivalent) ree S SUNER nn AUNEREE Dimensions (WXHXD) 315 X 75 X 247 mm ee ack : 10 Hz60 kHz (-3 dB) (12-13/32” X 2-15/16” X 9-23/32”) 7 : Weight 3.9 kg (8.6 Ib.) Graphic equalizer frequency 80 Hz, 250 Hz, 1 KHz, 4 kHz, 12.5 kHz Y Graphic equalizer range of variation +1

4、0 dB ote: miainG nares : 90 dB Total harmonic distortion is measured by the digital spectrum Output voltage analyzer (H.P. 3045 system). REC OUT 150 mV Specifications are subject to change without notice for further improvement. NOTES : 1. The power of the tuner in this system are supplied through t

5、he amplifier. When servicing these components, prepare an amplifier or an external power supply. (For how to use the fixture, refer to the Service Manual of tuner and tape deck.) 2. Prepare a transmitter and an amplifier when checking each model of system for its performance using the remote control

6、. . : y m4 Matsushita Electric Trading Co., Ltd. ec hics PO. Box 288, Central Osaka Japan RadioFans.CN 收音机爱 好者资料库 Mi CONTENTS Page LOCATION OF CONTROLS . 2.2.2.2 2 eee nae oe 2,3 HOW TO CONNECT. cece eee weet eee 3 PROTECTION CIRCUITRY .2020 eevee 4 BEFORE REPAIR AND ADJUSTMENT.- 4 DISASSEMBLY INSTR

7、UCTIONS . 4,5 FUNCTION OF IC TERMINALS .6.- 68 CIRCUIT BOARD OF REMOTE CONTROL UNIT. 8 (Transmitter) BLOCK DIAGRAM . 000 cee weer en nnes 9,10 Mi LOCATION OF CONTROLS Volume/balance level indicator (volume/balance) Power switch (MM stand by m On ) volume i toaltliy th Pe a ! 1 1 ee balance Balance c

8、ontrols (balance) Headphones jack CIRCUIT BOARD AND CONNECTION DIAGRAM . SCHEMATIC DIAGRAM OF REMOTE CONTROL TRANSMITTER. 14 KEY NUMBER DESCRIPTION AND DATA CODE OF REMOTE CONTROL TRANSMITTER . 14, 15 CIRCUIT BOARDS OF POWER SUPPLY . 16 SCHEMATIC DIAGRAM . 2.202 e eee eee 16 21 REPLACEMENT PARTS LIS

9、T .006.8. 22, 23 EXPLODED VIEW cick owed Se xp Bey hk eee Be a ges 24 26 Remote-control signal receptor (remote sensor) Audio muting (muting) Volume controls Equalizer controls (graphic equalizer) Synchro rec terminal for CD AUX CD PHONO TUNER Input connector (From phono, turntable) Input/output con

10、nector (From tuner) Input/output connector (From tape) e Before use _ CD AUXCD (volume) (phono) (tuner) (CD) Input selector (aux) (tape) Speaker terminal rVoltage adjust switch (For XA ,PC areas only) (L) (110V/1 27V /220V /240V) Voltage adjust switch (For XA ,PC areas only) 7) 10 127V/220 240V) Go-

11、ace Inlet TAPE OS IN se power source connector (From tape) he Sest SS Neate terminal WARNING: To avoid any serious damages, strongly be sure the voltage setting of the both voltage adjust switches according to the area. Be sure to disconnect the mains cord before adjusting both voltage adjust switch

12、es. Use a minus () screwdriver to set the voltage adjust switches. 1. This amplifier is already set to the “220 V 240 V” position before shipment. If the power supply in your areas is 110 V 127 V, Set to the “110 V 127 V” position. MeN 220V 20V eh Lt 2. Set to the voltage Seilina for the areain whic

13、h the unit will be used. ay ee (If the power supply in your area is 117 V or 120 V, set to the “127 V” position.) Note: There are no voltage adjust switches for some countries: the correct voltage is already set. RadioFans.CN 收音机爱 好者资料库 “onloff” switch AM/FM preset tuning =10 eje1 CD operation butto

14、ns (CD) “py, play” “ stop”: “skip kd”: “skip Di”: Turntable start/stop button (turntable) “ play”: “ll pause”: “ rec”: “ o auto rec mute”: “ marking, see the Notes | in the batten column. Parts Set Praduction 7 a Nea Ac Sg oR Sane ee ae an! ha Renata tte eg SED te re A A Original Early , Original or

15、 new parts may be used in early or late production set. Naw aes Use original parts until exhausted, then stock new parts. ets eas coke pester cto debacle ra ct iets ee Pa es ee Pe nate mete tetanic me mre anpentnntendtn mesnapnr reer ener waa cuts eye-nes sarap pnep magnesite fla Sess B Original Ear

16、ly + Original parts may be used in early production sets only. New parts may be used in early or late production sets. Use original parts where possible, then stock new parts. ce a et ee ee te eet cats Original Early New parts only may be used in early or late production sets. Stock new parts. New 2

17、5-4 St se a eR _ aaa att t D Original Early enacts parts may be used in ea production sets only. New parts may be used in late Naw bate production sets only. Stock both original and new parts. Bea a Ee PE mete nenaepnen ane ae aie timetable ae enyee atest eeine ne tntee Sen cetnnmenne as Sitameeteen

18、sinnenenyenee eet tin aaa trey tupenmeanieitetat weep ere EBS EES EO ea OY te EER A ORR REET ALERT E Other Part Number Model No. Ref. No. _ Original Part No. | New Part No. Part Name output as refer to t of 1C301. 10101 ( TUNER PHONG CO AUX TAPE PLAYBACK SOURCE OUT y). 2 Z mote control ver lid. 0.0)

19、 Z ery cover lid n the top and mpartment and ase. EB DOWN Mi FUNCTION OF IC TERMINALS e 1C301 (LC6523C3068) Microcomputer “L level output is given to each pin according to | Pin No.| | O mark the volume attenuation in a order to light up the LED 4 LED 5 LED 6 LED 7 LED 1 LED 2 LED 3 BACK-UP level ou

20、tput volume level LED. When this pin is at L level, the microcomputer is operated by the back-up circuit.(No. 9 pin alone receives an input, all the others not.) When this pin is at “H level, No.)pin (POWER ON) gives an L level output if No. 2 pin (POWER SW) is at “H” level. No.pin (POWER ON) is at

21、H” level, however, if the remote controls power on/off RAM data are off. Data codes reach here from the remote control receiver. (For data codes, refer to the remote control transmitter description.) The tape deck data codes are outputted from the light receiver direct to the deck. When this pin rec

22、eives an H” level input, the amplifier turns on to start the operation. When this pin receives an L level input, the amplifier turns off to stop receiving the matrix key. Power on/off code alone is used to enable the remote control. Just when this pins input comes from H to “L” level, the LED1 LED7p

23、ins become H”, Arising level (H level) is detected at No. pin to give an “L” level output to No.)pin | | POWERON (POWER ON). When No. (0 pin is at “L level, No.pin is given an H level output (POWER OFF). (0) POWER SW | OO | | DECK Not used. the number of pulses for a specified boner nae channel is g

24、iven. | 3) | ss DATA/SS1 Together with No. ee ee eee pin, Volume UP/DOWN and BALANCE L/R signals are fed to the to the a eee eer eee | | OSC 2 Crystal hook-up terminals for internal clock oscillator. / 2 OSC 1 RES Reset pulse input terminal. When a reset is made by the back-up circuit using electrol

25、ytic capacitors alone, 3 or 4 control RAM data are checked by the program. COLD START is activated when abnormal, HOT START when normal. Input terminals for matrix keys. REMOTE AMP When “Tuner” code is fed from the remote control to No Dpin, The DTS code is outputted at pin No. (2 SELECTOR code is t

26、hen outputted to make the input selector into TUNER mode. |f the remote controls CH button has been kept depressed for longer than 1.5 seconds, 15 output pulses 12.5ms (AM code) are fed to the tuner and TT ran Read pulse No. of pulses corresponding to the code No. of output Pere rena tensor 1 CH3(CH

27、11)/ 2 CH4(CH12)| 3 the number of pulses for a specified channel is given. |f the button has been released within 1.5 seconds 13 output pulses (FM code) are fed to the tuner and OTS code pulses a oo. ns Input selector 4-bits BCD codes are outputted with Remote Control codes. re * With Turntable “STA

28、RT” code, the LOUD Not used. output is given in the order of No. 1 TUNER TAPE TURNTABLE START TURNTABLE STOP | No. | aa ice ass Be INGE ee NO Ne ae ea ae a ee a Notes: (A) Key matrix, scanning signal input/output pins and their functions (“H” level scan) Volume UP Balance L Volume DOWN (B) Volume UP

29、/DOWN 1. Push the key once, and the volume will turn up (or down) by 2dB each steps. 2. Keep the key depressed for more than 250msec, and the volume will turn up (or down) all the way auto- matically. 3. An “L” level output is given at LED1 LED/ pins according to the volume attenuation. (C) Balance

30、LEFT/RIGHT 1. Push the key once, and the balance will shift to the left (or right) channel by 2dB. At the same time, the e 1C302 (DN74LS145) BCD Decoder The microcomputer (1C301) codes are fed via its No. 3) No. 8 pins to the 1C252s No. (2 No. pins. An L” level output is given according to the selec

31、tor positions; now the input selector IC (IC101) receives the output as a switching signal. (For the input codes to |C302, refer to the list of codes under No. ) No. B pins * of 1C301.) TURNTABLE START TAPE AUX “Volume/Balance indicator (LED1 LED7) is switched to the Balance position. (The Balance i

32、ndica- tion goes on for about 4 6 seconds after the Balance key is released. ) 2. Keep the key depressed for more than 500msec, the automatic shift mode will be invited. (D) Mute For ON/OFF switching of audio muting fanction.By a push on this key, the audio muting is turned on and the terminal outpu

33、t of the highest step of volume display LED 1 7 flashing. Q307 is a transistor to keep Tape Deck from switching from recording mode to playback mode, which might be otherwise caused by possible error data transfer from the remote control. (An H” level input comes from the tape deck to the amplifier

34、while in recording mode. ) No.Q)pin is not used in this model. Dp Dc Dg BCD Code IN TUNER PHONO a fe) cD K onl uJ AUX n - TAPE 2 PLAYBACK z SOURCE OUT Da e 1C202 (TC9177P) Attenuator Clock input. Used to take in data at DATA pin. CH1-Loudness 1,2 CH2-Loudness 1,2 Attenuation/channel select data inpu

35、t. 20-bits input activated by CK signal. 10dB attenuator output. Signal via IN is attenuated by 8 steps, 10dB each, from O 7OaB. CH1-OUT 1 CH2-OUT 1 CH1-IN 1 CH2-IN 1 CH1-IN 2 14 CH2-IN 2 Strobe input. Attenuation/channel select data from DATA and CK pins are lapped when this pin is at H” level. Pre

36、vious data remain the same while this pin does not reach H” level. 10dB attenuator input. AC grounding terminal. 2d0B attenuator input. Power supply (positive). 2dB attenuator output. Signal via IN is attenuated by 5 steps, 2dB each, from O 8B. CH1-OUT 2 CH2-OUT 2 Grounding terminal. BATTERY SEE Mi

37、BLOCK DIAGRAM INPUT SELECTOR | ae | LEFT CHANNEL 2 | Xe 7 PHONO + O O) + - | | xX | | | TUNER CS - a | | -10 4B | x4 | . Program 3 l | | Source CD S | | C | ; ie |. - io oe | ae! ow ee fa a cu tae of sts | ren eam (Oo | DATA I! A Regis (Playback) Jas 2 8 Ke | z | tab | | | = | | | ls REC OUT | 1 mut

38、ing = Switching | Q 101 fie +tV O 12 ) | Q 309 TAPE 0 Start Signal S invert SYNCHRO ibe 14 12 O cum af ) oS 3 VOLUME | CLK ST/D ue CONTROL = patassi KEY SW. 5 4 ay ees ee roe TH) ee ate a Mure 20 (iN K2 VW D103 | INPUT | Ca | Y R 2! coop |. ea | aaa an Aki bh Key IN CD i | | Cl UP CIN . ae SYNCH Tap

39、e Start : ak | i MICRG (L)input we ee eee ! 23 O Da/ SO -* De Data Code O Input Select = De Indicators Lael ii Tape OSCI osc2 (D Start Signal | SYNCHRO O-22 9 6 5 (L) input TURNTABLE 0 Crystal REMOTE Oscillator Start /Stop Signal Rec. Condition Q308 Hold REC When Rec, (H) IN CONTROL O TAP ( Deck Con

40、trol Signal (Data Code) aoe REMOTE GRAPHIC OP AMPLIFIER EQUALIZER(B.P.F.) ELECTRIC 3 1 + Mi BLOCK DIAGRAM iption in data at thannel select activated by shannel select TA and CK d when this level. remain the is pin does level. (positive). INPUT SELECTOR GRAPHIC BUFFER | IC 201 eae he cg aie . a7 oll

41、| = | PHONO a Y i A, ! 13 5 | 4 + O O O O oo J ij eae O dB ai TUNER (Oy | | -10 dB Lo | Program Be C _dB Pe 12.5kH C | | ! Source | : noes f_ i sane | ap oF AUX C cLK O) DATA Ii O TAPE Oo 6 ( ate, TAPE REC OUT .C Muting Switching Q 10 POWER AMPLIFIER R ch +tV 12 Q 303 oe Q 304 Q 502 Q 309 A Ind. Vol

42、ume S . er) TAPE Start Signal 5 Invert A th Zero Det. (= | SYNCHRO O a BAND PASS FILTERS a Muting 14 12 Ee. 5 28 29 30 O ome quene af ) commen ommmaant O= 2 4 : VOLUME | CLK ST/ DOTS LED OUT | OO (L) CONTROL a DATA/S| Vpp 5V KEY SW. test 7 5 4 -_- _ ack - up +V be OF E Mure 20h vee f | Power Sourse

43、4 WV D103 INPUT | (BAL) 17 e Bee Ee Q 301 L R gO Oe Ns | roo? peop key SYNCH | epee gpd 224 Ko MICRO - COMPUTER LD LD 6 vLoinpur | T0Pe Start a | pack vr ft sy LEE F 23 o- 2th ett ee Q Da/ SO POWER SW Teh -_*$ De a ne mane Data Code OUT Input Select = : : *9 De Indicators = se : *ho S REMOTE Tape Ba

44、e | OSC! osc2 (DATA IN) Start Signal SYNCHRO O-S!art Sis 1) : ye oe (L) input | TURNTABLE ee L 301 10 Crystal REMOTE s Oscillator Tuning fa REMOTE Start/Stop Signal CONTROL. | Ts RECEIVER | | Photo LED Rec. Condition 7 (4 Q308 Hold | | Det | easy : oe | WJ - Sos SS 4 | Wave Plastic As GB) m REC When

45、 Rec, (H) IN - J CONTROL . “/ a TAPE ( Deck Control Signal (Data Code) Pe REMOTE O=- . HA Speaker r Headphones 1 2 3 4 5 | 6 7 CIRCUIT BOARDS AND CONNECTION DIAGRAM Prono feo aux | SP eee | SPEAKERS sare (From phono) (From tuner) (From tape) (From tape) BALANCE ae (Left) (Right) CD SYNCRO JX REC SPE

46、AKERS TAPE (From tape) AC IN | a ae (220V 50/60Hz) eee eee oe - = BALANCE (Left) (Right) / / / (down) (up) VOLUME VOLUME LEVEL INDICATOR ond INPUT SELECTOR FLAT AMP. 305,306 9.5V 2SC3311A POWER ON/OFF SWITCHING MICRO COMPUTE (S CHl2 16V 2200 LIOI! SYNCHRO START SIGNAL ; START/STOP SIGNAL uz ow o=9 s

47、 cio3 Cct05 a b c d 10OP 56P my 2SAIZO9A ” -2| es aX|+ ase N o) aor ae a8 (R137) wo ce23 NoTc227 wFe215s VYOFcat R SIGNAL jo.901 o| S60P 8 fo.022 ” 10.0 -0.8 -0.8 -O.1| -0.8 -0.1/-O8 -0.| OO SW CONTROL IN y p IClol LED OUT 2SC33IIA SWITCHING KAR AKA RRR OOS OSC2 CLK DATA ST | oO: IC201, 202 qc ib M5226P GRAPHIC EQ AMP. (R141) 2.2K L ( = CD I NO vo (R142) R O (R144) R340 IC 103 MN 4049B INVERT c d = |+ wan w Y%iczi6 YY to