Akai-AJC3150R-cs-sm维修电路原理图.pdf
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1、Page CONTENTS PORTABLE CD SYSTEM AJ-C3150R Specifications electrical components having such features are identified by in the schematic diagram and the parts list. Before replacing any of these components, read the parts list in this manual carefully. The use of substitute replacement parts that do
2、not have the same safety characteristics as specified in the parts list may create shock, fire or other hazards. RadioFans.CN 收音机爱 好者资料库 3 Power Supply: AC 230V 50Hz Output Load: 8 ohm non-reactive Reference Output: 50mW Input Signal Source: IRE Loop for AM 75 ohm Dummy For FM Modulation: 30% 400Hz
3、for AM 22.5kHz Deviation 1000Hz for FM Remarks: 7.5kHz Pilot Tone 67.5kHz L+R 1000Hz AC Bias GENERAL TEST CONDITION (FM) SECTION, FREQUENCY, MODULATION UNITNOMINALLIMIT 1. Tuning RangeMHz87.5 - 108- 2. I. F.MHz10.70.3 3. 30dB S/N90.1MHzmV2228 98.1 MHzmV2228 106.1MHzmV2228 4. -3dB Limit Sens.dB2530 5
4、. I. F. Rej. 98.1MHzdB6050 6. Image Rej. 106.1MHzdB3018 7. Spurious Rejection (F + 0.535 MHz)dB4035 (Max. Sens. + 6dB) 8. AM Suppression(60dB I/P)dB3020 9. Mod. HumdB-45 10. Distortion at 1mV/m (Mono)%13 11. Audio Fidelity, (-3dB) (Pre-emphass) (50S)Hz60/9000120/6000 12. Dev. 40kHz 10% THDW10.8 13.
5、Low Voltage AC%8085 14. S/N Ratio at 1mV/m Dev. (Mono)98.1MHzdB5040 15. Stereo SeparationdB2622 16. 19kHz Leak CarrierdB3227 17. Stereo LED IndicationdB2630 18. Step FrequencykHz-50 19. Low Voltage DC%6570 REMARKS: NOTE: All measurement should be done at Bypass mode without X-Bass/Tone/ . effects. T
6、EST ITEMS GERENAL Power Source:AC 120V 60Hz (USA & CANADA) :AC 220V 50Hz (China) :AC 230V 50Hz (Europe & Hong Kong) :AC 240V 50Hz (Australia) :DC 12V (8xC size or UM-2 batteries) Power Consumption12W Specifications subject to change without notice. SPECIFICATIONS PERFORMANCE SPECIFICATIONS RadioFans
7、.CN 收音机爱 好者资料库 4 CD SECTION UNITNOMINALLIMIT 1. 10% Dis. Output Power (1kHz, 0dB) W10.8 2. Frequency Response (100Hz-20kHz / 1kHz, 0dB) dB24 3. De-emphasis Response (1kHz, 0dB / 5kHz-4.5dB / 16kHz-9dB)dB34 4. Channel Balance (1kHz, 0dB)dB0.53 5. Channel Separation (1kHz, 0dB)dB5540 6. T.H.D. + Noise
8、 (1kHz, 0dB)%0.150.5 7. S/N Ratio (1HF-A) (1kHz, 0dB)dB7060 8. Playability: Wedge PHILIPS 444Am-500 Black DotPHILIPS 444Am600500 EccentricityTCD - 712ABEXm-150 Skew Disc TCD - 731 RABEmm-0.5 Finger PrintPHILIPS 444ATrack-No.18 *with external A Weighting Filter Item 1 - 4 Test Disc CBS SONY YEDS7 Lev
9、el Matching Tape (B112BN)dB0 CD (-10dB 1K)dB0+3/-5 AM (55% 5mV/m) dB03 FM (40kHz 1mV)dB03 TEST ITEMS (AM) SECTION, AMPLITUDE, MODULATION UNITNOMINALLIMIT 1. Tuning RangekHz522 - 1620- 2. I. F.kHz4503 3. S/N 5mV/m0.999MHz dB3630 4. Sens. (at S/N 20dB)0.603MHzdBV6066 0.999MHzdBmV6066 1.404MHzdBmV6066
10、5. I.F. Rej. 0.603MHzdB4030 6. Image Rej. 1.404MHzdB3226 7. Spurious RejectiondB3525 8. Bandwidth, -6 dB, at1.404MHzkHz64 - 9 (Max. Sens. +6 dB) 9. ACA (9 kHz) Input 0.999MHzdB2010 10. AGC Figure Merit100mV/mdB5040 11. Distortion, 5mV/m, 30%13 80%36 12. 10% THD Power AC 55% Mod.W10.8 13. Audio Fidel
11、ity, Centre (6) dBHz60/2200140/2000 14. Low Voltage AC%8085 15. a. Mod. Hum 10mV/mdB3428 b. Hum at Min. Vol.mV0.52 16. Auto Stop Sens.dB6470 17. Step FrequencykHz-9 18. Low Voltage DC%6570 REMARKS: NOTE: All measurement should be done at Bypass mode without X-Bass/Tone/ . effects. TEST ITEMS PERFORM
12、ANCE SPECIFICATIONS - CONTINUED 5 CASSETTE SECTION UNITNOMINALLIMIT 1. Tape Speed (B-111LNA)Hz30003% / -3% 2. Wow & Flutter Rms (JIS R.M.S.) (B-111LNA)%0.350.45 3. Fast Forwards TimeSec.110100 - 180 4. Rewind - TimeSec.110100 - 180 5. Frequency Response B-257 (1kHz, 0dB) 125HzdB36 6.3kHzdB36 6. Sign
13、al to Noise in Play (B-112BN)dB4535 7. Separation (MTT-141N) dB4030 8. Cross Talk (B-121N) w/BPFdB4035 9Erase Ratio w/ BPFdB3226 10. Play Back Distortion (B-118N)%13 11. Rec. / Playback S/N Ratio (FM 1mV 75kHz Dev.) w/BPFdB3226 12. Rec. / Playback Level Difference (Radio)dB-3 13. Play Back 10% Disto
14、rtion-output PerW10.8 Channel (B-112BN) 14. Record Play Back Distortion (S.R.L. + 20)%38 15. ALC Effect Level (55% Mod., 74dB MW)dB-5 16. Recovery TimeSec.-5 17. VR Min. Hum & Noise (Motor On) w/o TapemV0.53 18. VR Max. Hum & Noise (Motor On) w/o TapemV3050 19. Rec. / Play Frequency Response 125Hz,
15、6.3kHzdB-6 TEST ITEMS PERFORMANCE SPECIFICATIONS - CONTINUED 6 Ref. No.DescriptionMfrs Part No.Qty. PCB MAIN PCBPCB CD1831T-02-01 (94HB)033-001831-4001 KEY & DISPLAY PCBPCB CD1831T-02-02 (94HB)033-001831-4001 BATTERY PCBPCB CD1831T-01-03 (94HB)033-001831-4001 BATTERY PCBPCB CD1831T-01-04 (94HB)033-0
16、01831-4001 RECTIFIER PCBPCB CD1790-01-07 (94V0)033-001790-1001 CD PORTION RESISTORS All are +-5% 1/16w (1/8w) tape & wheel resistors unless otherwise specified D102 R140*CdF RESISTOR 10 ohm001-010051-0162 R920*CdF RESISTOR 100 ohm001-010151-0161 R103,114,115,116,117,151,153,922*CdF RESISTOR 1 Kohm00
17、1-010251-0168 R108,109,111,123,124,129,139,155,*CdF RESISTOR 10 Kohm 001-010351-01614 159,160,161,163,165,166 R120,190*CdF RESISTOR 100 Kohm 001-010451-0162 R156*CdF RESISTOR 1.5K001-015251-0161 R128*CdF RESISTOR 15 Kohm001-015351-0161 R143,146RESISTOR 150 Kohm 001-015451-0162 D101*CdF RESISTOR 22 o
18、hm001-022051-0161 R102,107,150*CdF RESISTOR 2.2 Kohm001-022251-0163 R105,106,154,158,191*CdF RESISTOR 22 Kohm001-022351-0165 R127RESISTOR 220 Kohm 001-022451-0161 R121,122RESISTOR 270 ohm 001-027151-0162 R148RESISTOR 27 Kohm001-027351-0161 R125*CdF RESISTOR 3.3 Kohm 001-033251-0161 R118RESISTOR 39 K
19、ohm001-039351-0161 R130,141,142,144,145,152*CdF RESISTOR 47 Kohm 001-047351-0166 C103*CdF RESISTOR 470 Kohm 001-047451-0161 R162RESISTOR 5.6 Kohm001-056251-0161 R112,113*CdF RESISTOR 6.8 Kohm 001-068251-0162 R135,137,147RESISTOR 68K 001-068351-0163 R149RESISTOR 91 ohm 001-091051-0161 CAPACITORS C101
20、,105,107,117,134,138,159,199(F003-010380-025) CERAMIC CAP 0.01 uF/003-010380-0508 50V +80%-20% C121,122,125,142,145,146,147,148,CERAMIC CAP 0.1 uF/16V +80%-20%003-010480-01611 149,152,153 C111,114CERAMIC CAP 0.0022 uF/50V +80-20%003-022280-0502 C156CERAMIC CAP 0.033 uF/50V +80-20%003-033380-0501 C13
21、2CERAMIC CAP 0.0047 uF/50V +80%-20%003-047280-0501 C127,128,129,164CERAMIC CAP 0.047 uF/50V +80%-20%003-047380-0504 C102CERAMIC CAP 100 pF/50V +-10%003-210110-0501 (UP050B101K-BB) (AXIAL TAPED 52mm) C135CERAMIC CAP 0.015 uF/50V +-10%003-215310-0501 (UP050B153K-B-BZ) (AXIAL TAPED 52mm) C133CERAMIC CA
22、P 0.0027 uf/16V +-20%003-227220-0161 (EP050X272M-BB) (AXIAL TAPED 52mm) C130,131CERAMIC CAP 470 pF/50V +-10%003-247110-0502 (UP050B471K-BB) (AXIAL TAPED 52mm) C123,124CERAMIC CAP 15 pF/50V +-5% (NPO)003-415050-0502 (CC45-CH1H150J/RBU04CH150J-L) C109,110CERAMIC CAP 33 pF/50V +-5% (NPO)003-433050-0502
23、 (CC45-CH1H330J/RBU04CH330J-L) C136CERAMIC CAP 47 pF/50V +-5% (NPO)003-447050-0501 (CC45-CH1H470J/RBU04CH470J-L) ELECTRICAL PARTS LIST 7 Ref. No.DescriptionMfrs Part No.Qty. C162CERAMIC CAP 0.0068 uF/50V +80-20%003-068280-0501 C154CERAMIC CAP 56pF/50V +-5% (NPO)003-456050-0501 (CC45-CH1H560J/RBU04CH
24、560J-L) C112,113ELECT CAP 3.3 MFD/50V +-20% (5x11)006-003000-50D2 C106,118,157,161,163ELECT CAP 100 MFD/10V +-20% (5x11)006-010100-10D5 C115,116,175,319ELECT CAP 22 MFD/25V +-20% (5x11)006-022000-25D4 C104,141ELECT CAP 220 MFD/10V +-20% (6.3x11)006-022100-10D2 C108,137,139,140,143,155,158ELECT CAP 4
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