Rotel-RT955-tun-sm 电路图 维修手册.pdf

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1、T echnical Manual AM/FM STEREO TUNER RT-955 Table of Contents Specification Specification.1 Parts List.25 Adjustment.612 PCB Assembly.1315 Schematic Diagram .1622 FM Tuner Usable Sensitivity: 12.2 dBf 50dB Quieting Sensitivity: 20.2 dBf (mono) 45.3 dBf (stereo) Signal to Noise Ratio (at 65 dBf):75 d

2、Bf (mono) 72 dBf (stereo) Harmonic Distortion (at 65 dBf):0.2 % (mono) 0.3 % (stereo) Frequency Response: 10 Hz - 15 kHz, 3 dB Capture Ratio:2.0 dB Alternate Channel Selectivity:47 dB ( 400 KHz) Spurious Response Ratio:90 dB Image Rejection Ratio:80 dB IF Rejection Ratio:80 dB AM Suppression Ratio:5

3、5 dB Stereo Separation (100Hz/1 KHz/10 KHz):40 dB/45 dB/35 dB Output level:1.2V Antenna Input:75 ohms unbalanced AM Tuner Usable Sensitivity: 300 V/m Selectivity:25 dB Harmonic Distortion :0.5 % Image Rejection Ratio:45 dB Signal to Noise Ratio:48 dB Output level:165 mV Antenna Input:Loop Antenna Ge

4、neral Power Consumption:10 Watts Power Requirements (AC):120 volts, 60 Hz (USA version) 230 volts, 50 Hz (European version) Weight: 3.7 kg/8.2 lb. Dimensions (W x H x D): 440 x 72 x 286 mm 173/8 x 27/8 x 111/4 SHINSEN-BLD. 4F 10-10 SHINSEN-CHO, SHIBUYA-KU, TOKYO 150-0045, JAPAN Serial. NO. Beginning

5、 Quality Uncompromised Y-329A-00065C/S-S RadioFans.CN 收音机爱 好者资料库 2 Parts List-1 ANT200 ANT201 C201.202 C203 C204 C205.206 C207-210 C211.212 C213 C214 C215 C216 C217 C218 C219 C221 C222 C223-236 C237 C238-241 C242 C243 C245.246 C247 C248 C249 C250.251 C252 C253 C254 C255 C257 C259 C260 C261 C262 C263

6、 C264.265 C266 C267 C268.269 C270 C271 C272 C273 C274 C275 C276 C278.279 C280 C281 C282-284 C285 C301 C302 X-1273-01 PCB ASSEMBLY ANTENNA TERMINAL 1P ANTENNA TERMINAL 3P 0.01UF 0.022UF 100UF/16V 33PF-CH 1000PF 0.022UF 0.01UF 3.3UF/50V 0.022UF 100UF/16V 0.022UF 47UF/16V 0.022UF 0.022UF 47UF/16V 0.022

7、UF 100PF 0.047UF 150PF 0.022UF 0.022UF 1UF/50V 0.022UF 1UF/50V 0.022UF 100UF/16V 0.022UF 1UF/50V 0.047UF 0.022UF 0.047UF 680PF 0.47UF/50V 1UF/50V 0.047UF 1UF/50V 0.01UF 0.022UF 0.47UF/50V 4.7UF/50V 0.047UF 0.01UF 0.022UF 10UF/50V 68PF 330PF 10UF/50V 270PF 33UF/35V 100UF/16V 0.022UF 470PF-POLY 18PF-C

8、H ANTENNA-A ANTENNA-B CERAMIC CAPACITOR CERAMIC CAPACITOR ELECTRIC CAPACITOR CERAMIC CAPACITOR(CH TYPE) CERAMIC CAPACITOR CERAMIC CAPACITOR CERAMIC CAPACITOR ELECTRIC CAPACITOR CERAMIC CAPACITOR ELECTRIC CAPACITOR CERAMIC CAPACITOR ELECTRIC CAPACITOR CERAMIC CAPACITOR CERAMIC CAPACITOR ELECTRIC CAPA

9、CITOR CERAMIC CAPACITOR CERAMIC CAPACITOR CERAMIC CAPACITOR CERAMIC CAPACITOR CERAMIC CAPACITOR CERAMIC CAPACITOR ELECTRIC CAPACITOR CERAMIC CAPACITOR ELECTRIC CAPACITOR CERAMIC CAPACITOR ELECTRIC CAPACITOR CERAMIC CAPACITOR ELECTRIC CAPACITOR CERAMIC CAPACITOR CERAMIC CAPACITOR CERAMIC CAPACITOR CE

10、RAMIC CAPACITOR ELECTRIC CAPACITOR ELECTRIC CAPACITOR CERAMIC CAPACITOR ELECTRIC CAPACITOR CERAMIC CAPACITOR CERAMIC CAPACITOR ELECTRIC CAPACITOR ELECTRIC CAPACITOR CERAMIC CAPACITOR CERAMIC CAPACITOR CERAMIC CAPACITOR ELECTRIC CAPACITOR CERAMIC CAPACITOR CERAMIC CAPACITOR ELECTRIC CAPACITOR CERAMIC

11、 CAPACITOR ELECTRIC CAPACITOR ELECTRIC CAPACITOR CERAMIC CAPACITOR FILM CAPACITOR CERAMIC CAPACITOR(CH TYPE) C304 C306-308 C309 C311.312 C313 C314 C316 C317 C318 C319 C321 C322 C323.324 C325 C326 C327 C328 C329 C330 C401 C402-404 C405.406 C407.408 C409 C411 C412 C413 C414 C415.416 C417 C501 C502 C50

12、3 C504 C505 C506.507 C508 C509 C511 C512 C513.514 C515 C516 CL201.202 CL203 CL204 CL271 CL273 CL277 CR201.202 CR203 CR204 CR271 CR273 CR277 0.047UF 0.022UF 220PF 0.022UF 47UF/16V 0.022UF 1000PF 0.047UF-M 0.056UF-M 0.022UF 100UF/16V 0.01UF 0.022UF 3.3UF/50V 4.7UF/50V 1UF/50V 470PF 0.047UF 0.022UF-M 0

13、.022UF 47UF/16V 0.0033UF 0.01UF 10UF/50V 4.7UF/50V 10UF/50V 4.7UF/50V 0.022UF-M 0.0033UF-M 0.0068UF-M 3300UF/35V 47UF/50V 0.068UF-M 4.7UF/50V 0.068UF-M 0.022UF 10UF/50V 0.022UF 47UF/16V 220UF/16V 47UF/16V 47UF/35V 2.2UF/50V 22UF/16V 0.0039UF-M 1000PF 270PF 120PF 100PF 22UF/16V 0.0039UF-M 1000PF 270P

14、F 120PF 100PF CERAMIC CAPACITOR CERAMIC CAPACITOR CERAMIC CAPACITOR CERAMIC CAPACITOR ELECTRIC CAPACITOR CERAMIC CAPACITOR CERAMIC CAPACITOR MYLAR CAPACITOR MYLAR CAPACITOR CERAMIC CAPACITOR ELECTRIC CAPACITOR CERAMIC CAPACITOR CERAMIC CAPACITOR ELECTRIC CAPACITOR ELECTRIC CAPACITOR ELECTRIC CAPACIT

15、OR CERAMIC CAPACITOR CERAMIC CAPACITOR MYLAR CAPACITOR CERAMIC CAPACITOR ELECTRIC CAPACITOR CERAMIC CAPACITOR CERAMIC CAPACITOR ELECTRIC CAPACITOR ELECTRIC CAPACITOR ELECTRIC CAPACITOR ELECTRIC CAPACITOR MYLAR CAPACITOR MYLAR CAPACITOR MYLAR CAPACITOR ELECTRIC CAPACITOR ELECTRIC CAPACITOR MYLAR CAPA

16、CITOR ELECTRIC CAPACITOR MYLAR CAPACITOR CERAMIC CAPACITOR ELECTRIC CAPACITOR CERAMIC CAPACITOR ELECTRIC CAPACITOR ELECTRIC CAPACITOR ELECTRIC CAPACITOR ELECTRIC CAPACITOR ELECTRIC CAPACITOR ELECTRIC CAPACITOR MYLAR CAPACITOR CERAMIC CAPACITOR CERAMIC CAPACITOR CERAMIC CAPACITOR CERAMIC CAPACITOR EL

17、ECTRIC CAPACITOR MYLAR CAPACITOR CERAMIC CAPACITOR CERAMIC CAPACITOR CERAMIC CAPACITOR CERAMIC CAPACITOR SYMBOL PARTS NO.DESCRIPTIONSYMBOL PARTS NO.DESCRIPTION RadioFans.CN 收音机爱 好者资料库 3 Parts List-2 CF201.202 CF203 CF204 CF205 CF301 D201 D202-205 D208 D209-212 D301.302 D303-305 D307.308 D401 D501-50

18、5 D506 D507 D508 D509 D510 D511 F501.502 FFE200 IC201 IC202 IC203 IC204 IC205 IC301 IC401 IC501 ICM101 J321 JACK1 JACK2 L201-206 L207 L500 LFL200 LFR200 Q201.202 Q204 Q206.207 Q209 Q211 Q212 Q213-216 Q219 Q222 Q223 Q225 Q301 Q302 Q501 Q502 FM FILTER 10.7MM-A FM FILTER 10.7MJA10-A FM FILTER 10.7MM-A

19、CSB456F11 SFPS450H 1N4004 1N4148 ZENER 5.1V 1N4148 KV1236Z 1N4148 1N4148 ZENER 5.1V 1N4004 ZENER 30V ZENER 6.2V ZENER 12V 1N4148 ZENER 5.6V 1N4004 036 5ST500 FTA4-460H LC72191M LA1235 LA1235 LA3450 NJM072DE LA1245 LA2230 NJM317F HEAT SINK(24X17X30) LTV817 4.7K MINI JACK RCA 2P 56UH 20.8MH 56UH KLM5B

20、2-T KLM5B2-T KTC3198Y DTA114Y DTA114Y 2SC1740S 2SC1740S 2SK192GR KTC3195Y KTC3198Y DTC114Y 2SK117 DTA114Y 2SK192GR DTA114Y DTC114Y BKTA1267Y FM IF CERAMIC FILTER FM IF CERAMIC FILTER FM IF CERAMIC FILTER CERAMIC RESONATOR FILTER FOR AM SWITCHING DIODE SWITCHING DIODE ZENER DIODE SWITCHING DIODE VARA

21、CTOR DIODE SWITCHING DIODE SWITCHING DIODE ZENER DIODE SWITCHING DIODE ZENER DIODE ZENER DIODE ZENER DIODE SWITCHING DIODE ZENER DIODE SWITCHING DIODE MINI FUSE 250V T500MA FM FRONT-END PLL IC SIGNAL METER IC FM IF IC MPX IC DUAL OP AMP AM IF IC RDS IC REGULATOR IC REG.IC HEAT SINKER PHOTO COUPLER I

22、C RESISTOR 5% MULTI-ROOM JACK RCA JACK INDUCTOR FTZ COIL INDUCTOR MPX LPF COIL MPX LPF COIL TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR FET TRANSISTOR TRANSISTOR TRANSISTOR FET TRANSISTOR FET TRANSISTOR TRANSISTOR TRANSISTOR Q503 Q504 Q505 Q506 QL201 QR201 R201 R202 R203.204 R205 R207.208

23、 R211-213 R214-218 R222 R223 R224 R225 R226 R231.232 R233 R236 R238 R239 R240 R241 R242 R243 R244 R245 R246 R247 R248 R249 R250 R257.258 R259 R260 R261 R262 R263 R264 R265.266 R271 R272.273 R274 R275 R276 R277 R278 R279 R281 R282 R283 R284.285 R286 KTC3198Y DTC114Y DTA114Y KTC3198Y KTD1303 KTD1303 4

24、.7K 82R 100K 1K 100K 220R 1K 220R 560R 10K 5.6K 330R 220R 1K 330R 27K 330R 150R 470R 330R 15K 390R 6.8K 3.3K 22R 390R 330R 4.7K 330R 6.8K 3.3K 39R 390R 330R 4.7K 330R 330R 100K 18K 47K 1K 10R(1W) 10K 3.3K 18K 1K 10K 120K 3.3K TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR RESISTOR

25、 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR

26、 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% WATT RESISTOR RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% SYMBOL PARTS NO.DE

27、SCRIPTIONSYMBOL PARTS NO.DESCRIPTION RadioFans.CN 收音机爱 好者资料库 4 Parts List-3 R288 R289 R291.292 R297 R298 R299 R300 R301.302 R303 R304 R305 R306.307 R308 R309 R311 R312 R313 R314 R316.317 R318 R319 R320 R321 R401.402 R403 R404 R405 R406 R407 R408 R409 R410 R411 R412 R413 R501 R502 R503 R504 R505 R506

28、 R507 R508 R509 R511 R513 R514 R515 R516 R517 R518 R519 R520 RL201 RL202 5.6K 10K 100K 4.7K 22R 1M 1.5K 100K 100R 820R 470R 220R 10K 100K 100R 1K 4.7K 2K 220R 82R 10K 100K 10K 560R 680R 1K 3M 1K 5.6K 3.3K 10K 3M 33K 10K 22K 4.7K 10K 82R 270R 200R 1.8K 330R(1W) 10K 270R(1W) 1K 22K 10K 100R 12K 10K 4.

29、7K 56K 47K 3.3K 6.8K RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RES

30、ISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% WATT RESISTOR RESISTOR 5% WATT RESISTOR RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5%

31、 RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RL203 RL204 RL205 RL206 RL294 RL295 RM101 RR201 RR202 RR203 RR204 RR205 RR206 RR294 RR295 RLY201.202 TC301 TC302 TL201 TL202 TL301 TL302 TL303 TL304 VR201 VR203 VR204 VR205 VR206 VR301 VR401 XTL201 XTL401 C101-107 C

32、110.111 C112 C113 C114.115 C116 C117 C118 C119 C121 D101-107 D118 ENC101 FL101 Q101 R101-135 R136 R137-143 R146-149 R150.151 8.2K 470R 100K 3.3K 180K 100K 270R 3.3K 6.8K 8.2K 470R 100K 3.3K 180K 100K G5A-237P DC12V TRIMER 10P(WHITE) TRIMER 20P(RED) FM-DET-A FM-DET-B AM-OSC1 AM-ANT2 AM-IFT1 AM-IFT2 V

33、R.47K VR.22K VR.1M VR.470K VR.4.7K VR.22K VR.10K XTAL 7.2MHZ CSB456F15 X-1273-02 PCB ASSEMBLY 100PF 0.047UF 22UF/16V(SE TYPE) 0.1UF 820PF 0.1UF 820PF 1000PF 100PF 0.1UF 1N4148 1N4148 EC16B24202 SVR-12MM18(35S/12G) KTC3198Y 120K 10K 1K2 47K 2R2 RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR

34、 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RELAY VARIABLE CAPACITOR VARIABLE CAPACITOR FM DET.COIL FM DET.COIL AM OSC.COIL AM ANT.COIL AM IFT COIL AM IFT COIL VARIABLE RESISTOR VARIABLE RESISTOR VARIABLE RESISTOR VARIAB

35、LE RESISTOR VARIABLE RESISTOR VARIABLE RESISTOR VARIABLE RESISTOR CRYSTAL CERAMIC RESONATOR CERAMIC CAPACITOR CERAMIC CAPACITOR ELECTRIC CAPACITOR CERAMIC CAPACITOR CERAMIC CAPACITOR CERAMIC CAPACITOR CERAMIC CAPACITOR CERAMIC CAPACITOR CERAMIC CAPACITOR CERAMIC CAPACITOR SWITCHING DIODE SWITCHING D

36、IODE VR ENCODER VFD FOR RDS/RBDS TRANSISTOR RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% SYMBOL PARTS NO.DESCRIPTIONSYMBOL PARTS NO.DESCRIPTION 5 Parts List-4 R152 R155.156 R157 R158-163 R164 SW101-112 SW114-116 SW118-120 SW122-124 SW126-128 U101 U102 XT101 CM101 QM101 RM102 RM103 RM1

37、04 RMC201 C540 SW201 TF201 10K 10K 47K 10K 1K2 TACT SWITCH(SKHVBH) TACT SWITCH(SKHVBH) TACT SWITCH(SKHVBH) TACT SWITCH(SKHVBH) TACT SWITCH(SKHVBH) CXP82832-182Q AT24C16 CST10.00MTW X-1273-03 PCB ASSEMBLY 10UF/16V(SE TYPE) KTC3198Y 100R 150R 4.7K CRV1M352-00B X-1273-04 PCB ASSEMBLY 0.0047UF/400V POWE

38、R SW.TV-5 X-1273-05 PCB ASSEMBLY 022 T-1065N01 RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% RESISTOR 5% TACT SWITCH TACT SWITCH TACT SWITCH TACT SWITCH TACT SWITCH CPU EEP ROM RESONATOR 10.0MHZ ELECTRIC CAPACITOR TRANSISTOR RESISTOR 5% RESISTOR 5% RESISTOR 5% REMOTE CONTROL SENSOR SPARK KILLER(AC

39、 CERAMIC) SWITCH POWER TRANSFORMER C601-605 D601-604 IC601 JACK3 X-1273-06 PCB ASSEMBLY 1UF/50V ZENER 12V MAX232CPE DB9 JACK(MALE) OTHERS 011 FP-504 012 SK4-06A00 012 4TQF-15 014 C-4550A02 014 4TQN-12B#5 015 RP-360 019 4TSH-19#2 021 RLA145A00 034 SEL1124R 069 C-4629A01 072 4TR-2489 072 4TR-2875 072

40、4TR-3228 072 C-4620A01 072 C-4622A01 072 C-4623A01 072 C-4624A01 081 SK4-10A00 081 TZ-164-1 092 RR-T91 ELECTRIC CAPACITOR ZENER DIODE RS232 DRIVER IC DB9 JACK FRONT PANEL ASSY KNOB 33F POWER BUTTON 14X14 UPPER COVER BOTTOM BOARD PRINTED REAR CHASSIS PLASTIC FOOT 50F AM LOOP ANTENNA LED AC INLET 3.5M

41、M PLUG SHIELD CORD RCA PIN CORD T TYPE ANTENNA AC CORD SET for STD AC CORD SET for AUSTRALIA AC CORD SET for UK AC CORD SET for CEE INSIDE CARTON STYROL SIDE MOULDING REMOTE UNIT SYMBOL PARTS NO.DESCRIPTIONSYMBOL PARTS NO.DESCRIPTION Adjustment FM * Necessary measurement equipment RDS/STEREO Multipl

42、exer 1 unit FM/AM Signal Generator 1 unit Audio Signal Analyzer 1 unit Oscilloscope 1 unit Digital Volt Meter (DVM) 1 unit (A) Center adjust RDS/STEREO Multiplexer Setting MODE : MONO Audio Frequency : 1KHz FM Signal Generator Setting Deviation : 75KHz Radio Frequency : 98.0MHz Output Level : 66dB R

43、T955 Setting FM Frequency : 98.0MHz Antenna Selection : A FM MODE : MONO IF MODE : WIDE 6 q Turn FM Signal Generator Modulation on w Connect DVM (+)(-) terminals to both ends of resistor R282 and measure the volt. e Make this measured volt 0 by adjusting TL201(FM-DET-A Coil). (The adjustment should

44、be within 2mV) r After this adjustment, measure THD(Total Harmonic Distortion) with Audio Signal Generator. t Adjust THD to minimum point with TL202(FM-DET-B Coil). (THD should be within 0.5%) Oscilloscope Monitor Audio Signal Analyzer L-CH (or R-CH) Jack 2Ant-B (ANT 201) Ant-A (ANT 200) FM Signal G

45、enerator Stereo Multiplexer DVM (+) (-) IC 203 BACK FRONT (FM-DET-B) TL 202 TL 201 (FM-DET-A) R 282 (B) Channel Separation adjust RDS/STEREO Multiplexer Setting MODE : STEREO (ONLY L-CH Signal OUT) Audio Frequency : 1KHz FM Signal Generator Setting Deviation : 75KHz Radio Frequency : 98.0MHz Output

46、Level : 66dB RT955 Setting FM Frequency : 98.0MHz Antenna Selection : A FM MODE : STEREO IF MODE : WIDE 7 q Turn FM Signal Generator Modulation on after modulating only L-CH at STEREO Multiplexer. w Confirm if STEREO indicator is turned ON on the display in the WIDE MODE. e Measure output level via

47、Audio Signal Analyzer and make the level as standard. r Turn FM Signal Generator Modulation on after modulating only R-CH at STEREO Multiplexer. t Measure output level via Audio Signal Analyzer (measure per a dB) y Adjust output level to minimum position with VR204 (WIDE MODE CH-SEPA. ADJ.). (lower

48、than -40dB) u Change RT955 IF MODE to NARROW. i Repeat the above qt o Adjust output level to minimum point with VR205(NARROW MODE CH-SEPA. ADJ). (lower than -38dB) Oscilloscope Monitor Audio Signal Analyzer L-CH (or R-CH OPEN) Jack 2Ant-B (ANT 201) Ant-A (ANT 200) Signal Generator Stereo Multiplexer

49、 VR 204 (Wide) VR 205 (Narrow) IC 204 BACK FRONT (C) TUNED Level adjust RDS/STEREO Multiplexer Setting MODE : STEREO Audio Frequency : 1KHz FM Signal Generator Setting Deviation : 75KHz Radio Frequency : 98.0MHz Output Level : 26dB RT955 Setting FM Frequency : 98.0MHz Antenna Selection : A FM MODE : STEREO IF MODE : WIDE 8 q Turn FM Signal Generator Mo