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1、ORDER NO. PIONEER CORPORATION 1-1, Shin-ogura, Saiwai-ku, Kawasaki-shi, Kanagawa 212-0031, Japan PIONEER ELECTRONICS (USA) INC. P.O. Box 1760, Long Beach, CA 90801-1760, U.S.A. PIONEER EUROPE NV Haven 1087, Keetberglaan 1, 9120 Melsele, Belgium PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 253 Alexandra
2、Road, #04-01, Singapore 159936 PIONEER CORPORATION2012 2012 Printed in Japan STEREO RECEIVER VOLUME TUNE / PRESETMEMORY STANDBY A SPEAKERS B PHONES TONEBALANCE SX-20 STANDBY ON SX-20-K RRV4392 STEREO RECEIVER SX-20-K SX-20-S THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S). ModelTypeP
3、ower RequirementRemarks SX-20-KYXE8AC 220 V to 230 V SX-20-SYXE8AC 220 V to 230 V K-ZZZ OCT. RadioFans.CN 收音机爱 好者资料库 2SX-20-K 1234 A B C D E F 1234 SAFETY INFORMATION CONTENTS SAFETY INFORMATION.2 1. SERVICE PRECAUTIONS.3 1.1 NOTES ON SOLDERING.3 1.2 SERVICE NOTICE.3 2. SPECIFICATIONS.4 3. BASIC ITE
4、MS FOR SERVICE.5 3.1 CHECK POINTS AFTER SERVICING.5 3.2 PCB LOCATIONS.6 4. BLOCK DIAGRAM.8 4.1 OVERALL WIRING DIAGRAM .8 4.2 SIGNAL BLOCK DIAGRAM.10 4.3 LEVEL and POWER SUPPLY BLOCK DIAGRAM .12 4.4 GND MAP DIAGRAM.14 5. DIAGNOSIS.16 5.1 TROUBLESHOOTING.16 5.2 DETECTION CIRCUIT.22 5.3 IC INFORMATION.
5、23 6. SERVICE MODE.33 6.1 SERVICE MODE.33 6.2 FACTORY DEFAULT SETTINGS .36 7. DISASSEMBLY .37 8. EACH SETTING AND ADJUSTMENT .43 9. EXPLODED VIEWS AND PARTS LIST.44 9.1 PACKING SECTION.44 9.2 EXTERIOR SECTION.46 10. SCHEMATIC DIAGRAM.50 10.1 MAIN ASSY (1/2).50 10.2 MAIN ASSY (2/2).52 10.3 FRONT, LED
6、, POWER SW. SPK SW AB, RMC and HP ASSYS.54 11. PCB CONNECTION DIAGRAM.56 11.1 MAIN ASSY.56 11.2 FRONT, POWER SW, HP, LED, RMC, SPK SW AB, GUIDE C and GUIDE R ASSYS.60 12. PCB PARTS LIST.64 This service manual is intended for qualified service technicians; it is not meant for the casual do-it- yourse
7、lfer. Qualified technicians have the necessary test equipment and tools, and have been trained to properly and safely repair complex products such as those covered by this manual. Improperly performed repairs can adversely affect the safety and reliability of the product and may void the warranty. I
8、f you are not qualified to perform the repair of this product properly and safely, you should not risk trying to do so and refer the repair to a qualified service technician. RadioFans.CN 收音机爱 好者资料库 3SX-20-K 5678 5678 A B C D E F 1. SERVICE PRECAUTIONS 1.1 NOTES ON SOLDERING 1.2 SERVICE NOTICE For e
9、nvironmental protection, lead-free solder is used on the printed circuit boards mounted in this unit. Be sure to use lead-free solder and a soldering iron that can meet specifications for use with lead-free solders for repairs accompanied by reworking of soldering. Compared with conventional eutecti
10、c solders, lead-free solders have higher melting points, by approximately 40 C. Therefore, for lead-free soldering, the tip temperature of a soldering iron must be set to around 373 C in general, although the temperature depends on the heat capacity of the PC board on which reworking is required and
11、 the weight of the tip of the soldering iron. Do NOT use a soldering iron whose tip temperature cannot be controlled. Compared with eutectic solders, lead-free solders have higher bond strengths but slower wetting times and higher melting temperatures (hard to melt/easy to harden). The following lea
12、d-free solders are available as service parts: Parts numbers of lead-free solder: GYP1006 1.0 in dia. GYP1007 0.6 in dia. GYP1008 0.3 in dia. Discharging For more detail, please refer to 7. DISASSEMBLY - 1. Discharging. RadioFans.CN 收音机爱 好者资料库 4SX-20-K 1234 A B C D E F 1234 2. SPECIFICATIONS Amplifi
13、er section Power output specification is for when power supply is 230 V. Continuous power output (both channels driven at 20 Hz to 20 kHz) 100 W+100 W (THD 1 %, 8 ) Audio section Input (Sensitivity/Impedance) SACD/CD. . . . . . . . . . . . . . . . . . . . . . . . . . . 400 mV/47 k PHONO (MM) . . . .
14、 . . . . . . . . . . . . . . . . . . . 5.5 mV/47 k Output (Level/Impedance) RECORDER OUT. . . . . . . . . . . . . . . . . . . . 400 mV/2.0 k Frequency response SACD/CD, NETWORK, RECORDER . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Hz to 100 kHz dB PHONO (MM) . . . . . . . . . . . . . .
15、 20 Hz to 20 kHz 0.5 dB Tone control (When VOLUME is set to 30 dB) Bass . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 dB (100 Hz) Treble . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 dB (10 kHz) Signal-to-Noise Ratio (IHF SHORTED, A-NETWORK) SACD/CD, NETWORK, RECORDER . . . .
16、 . . . . . . .100 dB PHONO (MM, 5.5 mV input) . . . . . . . . . . . . . . . . . .80 dB Total Harmonic Distortion SACD/CD, NETWORK, RECORDER . . . . . 0.01 % or less (1 kHz, 50 W, 8 ) Speaker load impedance A, B. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 to 16 A+B . . . . .
17、. . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 to 16 Tuner Section Frequency Range (FM) . . . . . . . . . .87.5 MHz to 108 MHz Antenna Input (FM). . . . . . . . . . . . . . . . 75 unbalanced Frequency Range (AM). . . . . . . . . . .531 kHz to 1602 kHz Antenna (AM) . . . . . . . . . . . .
18、. . . . . . . . . . . Loop antenna Miscellaneous Power requirements . . . .AC 220 V to 230 V, 50 Hz/60 Hz Power consumption . . . . . . . . . . . . . . . . . . . . . . . . 210 W In standby. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 W Dimensions . . . . . . . . . . . 435 mm (W)
19、x 142.5 mm (H) x 364 mm (D) Weight (without package) . . . . . . . . . . . . . . . . . . . 8.3 kg Accessories Accessories Remote control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 AAA/IEC R03 dry cell batteries . . . . . . . . . . . . . . . . . . . .2 AM loop antenna. . . . .
20、 . . . . . . . . . . . . . . . . . . . . . . . . . . .1 FM wire antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 Power cord Warranty card Quick start guide Safety Brochure Operating instructions (CD-ROM) Note Specifications and the design are subject to possible modifications
21、 without notice, due to improvements. Corporation and product names mentioned herein are trademarks or registered trademarks of the respective corporations. Remote Control (8300764700010-IL) AAA size IEC R03 dry cell batteries x2 AM loop antenna (E601019000010-IL) Power cord (L068250160020-IL) Warra
22、nty card CD-ROM (Operating instructions) (6517000001020-IL) SX-20-K/-S FM wire antenna (E605010140010-IL) Quick start guide (5707000007450-IL) Safety Brochure (5227000002540-IL) RadioFans.CN 收音机爱 好者资料库 5SX-20-K 5678 5678 A B C D E F 3. BASIC ITEMS FOR SERVICE 3.1 CHECK POINTS AFTER SERVICING Item to
23、 be checked regarding audio Distortion Noise Volume too low Volume too high Volume fluctuating Sound interrupted To keep the product quality after servicing, confirm recommended check points shown below. See the table below for the items to be checked regarding audio. No. Procedures Check points 1 C
24、heck the symptom pointed out by a customer The pointed content should not reoccur Sound and operation should not be defective 2 Check each input and main VOL (check the operation of selector) The sound is output by selecting an analog-connected input with a selector and the sound volume should chang
25、e by rotating main VOL knob 3 Check the tone control, balance, and function The sound quality or right and left balances should change by rotating each VOL knob 4 Check DIRECT functionsThe tone control should be disabled by setting DIRECT function to ON. 6 Check SPEAKER A/B and headphone terminal Th
26、ere should not be defect in sound such 5Check the tuner (AM and FM) operationsAudio and operations must be normal. as noise 7 Check the external package Check scratch or taint is not generated after accepting the repair RadioFans.CN 收音机爱 好者资料库 6SX-20-K 1234 A B C D E F 1234 3.2 PCB LOCATIONS FRONT A
27、SSY MAIN ASSY A B RMC ASSY F LED ASSY E SPK SW AB ASSY G GUIDE R ASSYPOWER SW ASSY C HP ASSY D GUIDE C ASSY NSP 1.PCB TTL ASSY MAIN 7025HK1204010-IL 2.MAIN ASSY 7028072771010-IL NSP 1.PCB TTL ASSY FRONT 7025HK1204011-IL 2.FRONT ASSY 7028072761010-IL 2.LED ASSY 7028072762010-IL 2.POWER SW ASSY 702807
28、2763010-IL 2.SPK SW AB ASSY 7028072764010-IL 2.RMC ASSY 7028072765010-IL 2.HP ASSY 7028072766010-IL 2.GUIDE C ASSY 7028072767010-IL 2.GUIDE R ASSY 7028072768010-IL Mark No. DescriptionPart No.Mark No. DescriptionPart No. LIST OF ASSEMBLIES NOTES: - Parts marked by “NSP” are generally unavailable bec
29、ause they are not in our Master Spare Parts List. - The mark found on some component parts indicates the importance of the safety factor of the part. Therefore, when replacing, be sure to use parts of identical designation. RadioFans.CN 收音机爱 好者资料库 7SX-20-K 5678 5678 A B C D E F RadioFans.CN 收音机爱 好者资
30、料库 8SX-20-K 1234 A B C D E F 1234 4. BLOCK DIAGRAM 4.1 OVERALL WIRING DIAGRAM BFRONT ASSY (7028072761010-IL) (7028072771010-IL) MAIN ASSY A1/2 -(A2/2 )A RadioFans.CN 收音机爱 好者资料库 9SX-20-K 5678 5678 A B C D E F GSPK SW AB ASSY (7028072764010-IL) C POWER SW ASSY (7028072763010-IL) E LED ASSY (702807276
31、2010-IL) F RMC ASSY (702807276 5010-IL) D HP ASSY (7028072766010-IL) RadioFans.CN 收音机爱 好者资料库 10SX-20-K 1234 A B C D E F 1234 4.2 SIGNAL BLOCK DIAGRAM BFRONT ASSY MAIN ASSYA IC605 IC601 IC101 FLT400 IC400 IC700 IC105 IC104 IC103 IC106 PACK101 RadioFans.CN 收音机爱 好者资料库 11SX-20-K 5678 5678 A B C D E F IC
32、502 IC503 IC301 RadioFans.CN 收音机爱 好者资料库 12SX-20-K 1234 A B C D E F 1234 4.3 LEVEL and POWER SUPPLY BLOCK DIAGRAM AC 0.20A S3(FLT) DC 0.4A S2(+15V,-15V) DC3.95A S1(AMP B+/B-) SUB TRANS AC CORD MAIN TRANS POWER DIAGRALEVEL DIAGRAM IC605 IC700 IC601 RadioFans.CN 收音机爱 好者资料库 13SX-20-K 5678 5678 A B C D E
33、 F AC 0.20A S3(FLT) DC 0.4A 1N4007 1N4007 1SS133T 1N4007 1N4007 1SS133T 1/50 ST_BY RLY MTZ2.4B S2(+15V,-15V) DC3.95A S1(AMP B+/B-) POWER_DOWN MTZJ5.6B RESET SUB TRANS MAIN TRANS WER DIAGRAM RadioFans.CN 收音机爱 好者资料库 14SX-20-K 1234 A B C D E F 1234 4.4 GND MAP DIAGRAM GND map BACK CHASSI ST3.3VV+15V V+
34、15V V+15VV+9V GND_A GND_D VREF V-15V BLUE RED ST3.3V ST3.3V WIRE403B (CHGND) WIRE401 (NM) WIRE402 (NM) C425(NM) R466(NM) C417(NM) C140(NM) C141(22uF) C142(NM) C143(22uF) C402(0.1uF) C403(0.1uF) C413(0.1uF) C449(0.1uF) C131(22uF) C134(NM) C121(10uF) C130(100uF) eala TONE Function/E.Vol IC E.VOL D402(NM) D403(NM) R459(NM) R218(100 ohm) R215(100 ohm) Pre Amp (+16dB) C436(N
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