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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 Onkyo it is not meant for the casual do-it- yourselfer. 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 advers
3、ely affect the safety and reliability of the product and may void the warranty. If 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. For environmental protection, lead-free sold
4、er 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. Do NOT use a soldering iron whose tip temperature cannot be controlled. R
5、adioFans.CN 收音机爱 好者资料库 3 A-70DA-K 5678 5678 A B C D E F 2. SPECIFICATIONS 2.1 ACCESSORIES 2.2 SPECIFICATIONS Remote control unit (CARTA70DA)Caution Sheet (VQE1A816Z) AAA/IEC R03 dry cell battery x 2 Warranty card (VQE1A818Z) Short pin plug x 2 (CJT1A100) AC Power cord (CJA2B135ZV) Operating instruct
6、ions (VQX1A1939Z) Amplifier section Power output specification is for when power supply is 230 V. Continuous power output (both channels driven at 20 Hz to 20 kHz) A-70DA/A-50DA . . . . . . . . . . . . . . . . . . . . . . . . .90 W + 90 W (THD 0.5 %, 4 ) A-70DA/A-50DA . . . . . . . . . . . . . . . .
7、 . . . . . . . . .65 W + 65 W (THD 0.5 %, 8 ) Audio section Input terminals (Sensitivity/Impedance) BALANCED . . . . . . . . . . . . . . . . . . . . . . . . . . .200 mV/82 k POWER AMP DIRECT . . . . . . . . . . . . . . . . . . . . . . 1 V/10 k PHONO (MM). . . . . . . . . . . . . . . . . . . . . . .
8、. . . 2.8 mV/50 k PHONO (MC) . . . . . . . . . . . . . 0.24 mV/100 (A-70DA only) COAXIAL . . . . . . . . . . . . . . . . . . . . . . . . . . .500 mVp-p/75 Output (Level/Impedance) LINE 2 OUT . . . . . . . . . . . . . . . . . . . . . . . . . . 200 mV/2.2 k Frequency response SACD/CD, NETWORK, LINE 1,
9、 LINE 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Hz to 50 kHz 3 dB* RIAA DEVIATION PHONO (MM) . . . . . . . . . . . . . . . . 20 Hz to 20 kHz 0.5 dB* PHONO (MC) . . . . . . . . . . . . . . . . .20 Hz to 20 kHz 0.5 dB*(A-70DA only) Signal-to-Noise Ratio (IHF SHORTED, A-NETWORK) SA
10、CD/CD, NETWORK, LINE 1, LINE 2 . . . . . . . . . . . 101 dB* PHONO (MM, 5 mV input). . . . . . . . . . . . . . . . . . . . . 89 dB* PHONO (MC, 0.5 mV input) . . . . . . . . .74 dB*(A-70DA only) * Measured with DIRECT button switched on. * Measured with DIRECT button switched on. Guaranteed impedance
11、 A, B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 to 16 A+B. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 to 32 Bi-wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 to 16 Tone control Bass . . . . . . . . . . . . . . . . . . .
12、 . . . . . . . . . . . 10 dB (100 Hz) Treble . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 dB (10 kHz) Miscellaneous Power requirements . . . . . . . . . . . . . . . . . . . . . . . . . . AC 220 V to 230 V, 50 Hz Power consumption A-70DA. . . . . . . . . . . . . . . . . . . . . . . .
13、. . . . . . . . . . . . . 74 W A-50DA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 W In standby . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.3 W Dimensions A-70DA . . . . . . .435 mm (W) x 141.5 mm (H) x 370 mm (D) A-50DA. . . . . . . 435 mm (W)
14、x 138.5 mm (H) x 368 mm (D) Weight (without package) A-70DA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17.2 kg A-50DA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11.1 kg Note Specifications and the design are subject to possible modifications without no
15、tice, due to improvements. Corporation and product names mentioned herein are trademarks or registered trademarks of the respective corporations. “Pioneer” is a trademark of Pioneer Corporation, and is used under license. SACD/CD, NETWORK, LINE 1, LINE 2 . . . . . 200 mV/50 k RadioFans.CN 收音机爱 好者资料库
16、 4 A-70DA-K 1234 A B C D E F 1234 3. BASIC ITEMS FOR SERVICE 3.1 CHECK POINTS AFTER SERVICING Item to 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 be
17、low. See the table below for the items to be checked regarding audio. No. Procedures Check points 1 Check 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 sou
18、nd is output by selecting an analog-connected input with a selector and the sound volume should change 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 LOUDNESS and DIRECT functions
19、The sound quality should change by setting LOUDNESS function to ON. LOUDNESS function should be disabled by setting DIRECT function to ON. 5 Check POWER AMP DIRECT terminal (connected from pre-out terminal of AV AMP to POWER AMP DIRECT terminal) The sound volume should change by adjusting the sound
20、volume of connected AV AMP. The sound volume should not be changed by the main VOL on the main unit. 6 Check SPEAKER A/B and headphone terminal There should not be defect in sound such as noise 7 Check the external package Check scratch or taint is not generated after accepting the repair 5 A-70DA-K
21、 5678 5678 A B C D E F 3.2 PCB LOCATIONS HEADPHONE ASSY GUARD11 ASSY R FUNCTION LED ASSY E S I POWER ASSY M SECOND POWER ASSY H FUNCTION SW ASSY G PHONO ASSY C GUARD16 ASSY W GUARD12 ASSY (A-70DA-K, A-70DA-S only) X GUARD17 ASSY (A-70DA-K, A-70DA-S only) GUARD10 ASSY (A-70DA-K, A-70DA-S only) GUARD1
22、3 ASSY T GUARD18 ASSY Y INPUT ASSY USB ASSY B CONNECTOR ASSY (A-70DA-K, A-70DA-S only) D-POWER AMP SUB ASSY K D-POWER AMP MAIN ASSY J FRONT ASSY D VOLUME ASSY F AC LINE ASSY (A-70DA-K, A-70DA-S only) O Q A XLR ASSY (A-70DA-K, A-70DA-S only) L GUARD15 ASSY V GUARD9 ASSY P GUARD14 ASSY U N 6 A-70DA-K
23、1234 A B C D E F 1234 3.3 JIGS LIST NOTES: - Parts marked by “NSP” are generally unavailable because 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 ide
24、ntical designation. Mark No. Description Part No. LIST OF ASSEMBLIES 1.FRONT ASSY (A-70DA-K/-S)COP12818B 2.FRONT ASSYCUP12818Z-1BCD 2.FUNCTION LED ASSYCUP12818Z-2BC 2.VOLUME ASSYCUP12818Z-3BCD 2.FUNCTION SW ASSYCUP12818Z-4BCD 2.SECOND POWER ASSYCUP12818Z-5 2.HEADPHONE ASSYCUP12818Z-6 2.POWER ASSYCUP
25、12818Z-7B 2.AC LINE ASSYCUP12818Z-8BCD 2.GUARD9 ASSYCUP12818Z-9 2.GUARD10 ASSYCUP12818Z-10 NSP 2.GUARD11 ASSY 2.GUARD12 ASSYCUP12818Z-12 2.GUARD13 ASSYCUP12818Z-13 NSP 2.GUARD14 ASSY NSP 2.GUARD15 ASSY NSP 2.GUARD16 ASSY NSP 2.GUARD17 ASSY NSP 2.GUARD18 ASSY 1.FRONT ASSY (A-50DA-K/-S)COP12818E 2.FRO
26、NT ASSYCUP12818Z-1EF 2.FUNCTION LED ASSYCUP12818Z-2EF 2.VOLUME ASSYCUP12818Z-3EF 2.FUNCTION SW ASSYCUP12818Z-4EF 2.SECOND POWER ASSYCUP12818Z-5 2.HEADPHONE ASSYCUP12818Z-6 2.POWER ASSYCUP12818Z-7E 2.GUARD9 ASSYCUP12818Z-9 NSP 2.GUARD11 ASSY 2.GUARD13 ASSYCUP12818Z-13 NSP 2.GUARD14 ASSY NSP 2.GUARD15
27、 ASSY NSP 2.GUARD16 ASSY NSP 2.GUARD18 ASSY 1.INPUT ASSY (A-70DA-K/-S)COP12819B 2.INPUT ASSYVUP12819Z-1B 2.CONNECTOR ASSYVUP12819Z-2BCD 1.INPUT ASSY (A-50DA-K/-S)COP12819E 2.INPUT ASSYVUP12819Z-1E 1.MAIN ASSY (A-70DA-K/-S)COP12820B 2.USB ASSYCUP12820Z-1B 2.PHONO ASSYCUP12820Z-2B 2.XLR ASSYCUP12820Z-
28、3B 1.MAIN ASSY (A-50DA-K/-S)COP12820E 2.USB ASSYCUP12820Z-1E 2.PHONO ASSYCUP12820Z-2E 1.D-AMP MAIN ASSY (A-70DA-K/-S)COP12821B 2.D-POWER AMP MAIN ASSYVUP12821ZB 1.D-AMP MAIN ASSY (A-50DA-K/-S)COP12821C 2.D-POWER AMP MAIN ASSYVUP12821ZC 1.D-AMP SUB ASSYCOP12822C 2.D-POWER AMP SUB ASSYVUP12822Z Mark N
29、o. Description Part No. NameJig No.Remarks CONNECTOR CONVERSION JIGGGD1898 UPDATE JIGGGF1675 Farmware Update 1 Jigs List 2 Lubricants List Name Lubricants No.Remarks Silicon Bond GYA1011 Refer to “9.4 FRONT SECTION” 7 A-70DA-K 5678 5678 A B C D E F 4. BLOCK DIAGRAM 4.1 OVERALL CONNECTION DIAGRAM (A-
30、70DA-K, A-70DA-S) CJP03GI236ZW CJP10GA297ICJP10GA297I CJP10GA298ICJP10GA298I CJP10GA298ICJP10GA298I CJP10GA297I CJP06GA90ZY CJP05GI236ZW CJP03GI237ZW CJP19GA295K CJP19GA295K CJP10GA297I CJP03GI237ZW CJP02GA89ZY SUB-TRANS CJP09GA294KCJP09GA295K CJP16HJ358I CJP24HJ358I CJP20HJ358I CJP21GA117ZY CJP21GA
31、117ZY 3 PIN 10 PIN10 PIN 16 PIN CJP16GI359I 16 PIN 24 PIN CJP24GI359I 24 PIN 10 PIN10 PIN 20 PIN 2 PIN 20 PIN 20 PIN CJP20GI359I CJP10GI359ICJP10HJ358I CJP20GI359ICJP20HJ358I CJP03GJ243ZW 20 PIN 21 PIN 21 PIN 10 PIN 6 PIN 3 PIN 19 PIN19 PIN CJP19GA294K CJP19GA294K 19 PIN19 PIN 10 PIN 9 PIN 9 PIN 3 P
32、IN 2 PIN CJP03GI236ZW Power SW CWB1B00308047 CWB1B00508047 CJP05GI236ZW CWB1B00342047 CJP21GA117ZY CWB1B00505047 CJP21GB113ZY CWB1B00510047CJP05GI236ZW 3 PIN 3 PIN 5 PIN 5 PIN 3 PIN21 PIN 5 PIN 5 PIN5 PIN 21 PIN 5 PIN CJP16GI359I CJP16HJ358I CJP16GI359I 16 PIN 16 PIN 16 PIN 16 PIN CJP16HJ358I AC LIN
33、E ASSY CUP12818Z-8BCD O CJP02GA89ZY 2 PIN CJP02GA89ZY 2 PIN CJP02KA060ZY 2 PIN Pri Trans XLR ASSY CUP12820Z-3B (A-70DA/SYXEV8) L CONNECTOR ASSY VUP12819Z-2BCD N D-POWER AMP SUB ASSY VUP12822Z K Therefore, when replacing, be sure to use parts of identical designation. When ordering service parts, be
34、sure to refer to EXPLODED VIEWS and PARTS LIST or PCB PARTS LIST. The mark found on some component parts indicates the importance of the safety factor of the part. POWER ASSY CUP12818Z-7B (A-70DA/SYXEV8) M J D-POWER AMP MAIN ASSY VUP12821ZB J 1/3 - J 3/3 B USB ASSY CUP12820Z-1B (A-70DA/SYXEV8) B 1/2
35、 - B 2/2 PHON0 ASSY CUP12820Z-2B (A-70DA/SYXEV8) C FRONT ASSY CUP12818Z-1BCD D HEADPHONE ASSY CUP12818Z-6 I SECOND POWER ASSY CUP12818Z-5 H Main Trans FUNCTION LED ASSY CUP12818Z-2BC(A-70DA) E FUNCTION SW ASSY CUP12818Z-4BCD G VOLUME ASSY CUP12818Z-3BCD F A INPUT ASSY VUP12819Z-1B(A-70DA/SYXEV8) A 1
36、/2 - A 2/2 4. BLOCK DIAGRAM GUARD9 ASSY CUP12818Z-9P GUARD10 ASSY CUP12818Z-10Q GUARD11 ASSYR GUARD12 ASSY CUP12818Z-12S GUARD13 ASSY CUP12818Z-13T GUARD14 ASSYU GUARD15 ASSYV GUARD16 ASSYW GUARD17 ASSYX GUARD18 ASSYY 8 A-70DA-K 1234 A B C D E F 1234 4.2 OVERALL CONNECTION DIAGRAM (A-50DA-K, A-50DA-
37、S) CJP03GI236ZW CJP10GA297ICJP10GA297I CJP10GA298ICJP10GA298I CJP10GA298ICJP10GA298I CJP10GA297I CJP06GA90ZY CJP05GI236ZW CJP03GI237ZW CJP19GA295K CJP19GA295K CJP10GA297I CJP03GI237ZW CJP02GA89ZY SUB-TRANS CJP09GA294KCJP09GA295K CJP16HJ358I CJP24HJ358I CJP20HJ358I CJP21GA117ZY CJP21GA117ZY 3 PIN 10
38、PIN10 PIN 16 PIN CJP16GI359I 16 PIN 24 PIN CJP24GI359I 24 PIN 10 PIN10 PIN 20 PIN 2 PIN 20 PIN 20 PIN CJP20GI359I CJP10GI359ICJP10HJ358I CJP20GI359ICJP20HJ358I CJP03GJ243ZW 20 PIN 21 PIN 21 PIN 10 PIN 6 PIN 3 PIN 19 PIN19 PIN CJP19GA294K CJP19GA294K 19 PIN19 PIN 10 PIN 9 PIN 9 PIN 3 PIN 2 PIN CJP03G
39、I236ZW Power SW CWB1B00308047 CWB1B00508047 CJP05GI236ZW CWB1B00342047 CJP21GA117ZY CWB1B00505047 CJP21GB113ZY CWB1B00510047CJP05GI236ZW 3 PIN 3 PIN 5 PIN 5 PIN 3 PIN21 PIN 5 PIN 5 PIN5 PIN 21 PIN 5 PIN D-POWER AMP SUB ASSY VUP12822Z K POWER ASSY CUP12818Z-7E (A-50DA/SYXEV8) M J D-POWER AMP MAIN ASS
40、Y VUP12821ZC J 1/3 - J 3/3 B USB ASSY CUP12820Z-1E (A-50DA/SYXEV8) B 1/2 - B 2/2 PHON0 ASSY CUP12820Z-2E (A-50DA/SYXEV8) C FRONT ASSY CUP12818Z-1EF D HEADPHONE ASSY CUP12818Z-6 I SECOND POWER ASSY CUP12818Z-5 H Main Trans FUNCTION LED ASSY CUP12818Z-2EF E FUNCTION SW ASSY CUP12818Z-4EF G VOLUME ASSY
41、 CUP12818Z-3EF F A INPUT ASSY VUP12819Z-1E(A-50DA/SYXEV8) A 1/2 - A 2/2 Therefore, when replacing, be sure to use parts of identical designation. When ordering service parts, be sure to refer to EXPLODED VIEWS and PARTS LIST or PCB PARTS LIST. The mark found on some component parts indicates the imp
42、ortance of the safety factor of the part. GUARD9 ASSY CUP12818Z-9P GUARD11 ASSYR GUARD13 ASSY CUP12818Z-13T GUARD14 ASSYU GUARD15 ASSYV GUARD16 ASSYW GUARD18 ASSYY 9 A-70DA-K 5678 5678 A B C D E F 4.3 BLOCK DIAGRAM Vol +8VToneBalanceSWInput Selecter Sub Trans secandary DC Power SWSTB LEDIRBlue LED I
43、C91IC92 SR I/O COAX OPT +7.5V +18V+15V+15V+6V+6V +3.3V -18V-15V-7.5V PHONO +20V+15V IC4908IC7251 POWER AMP GAIN23dB +35V LINE2 IC4909IC7252 -20V-15V NETWORK SACD/CD LINE1 P-AMP DIRECT +35V LINE2 OUT BALANCE -35V -35V C CM6632M6632 384kHz/32bit DSD5.6M 384kHz/32bit DSD5.6M FLASHFLASH DAC 384kHz/32bit
44、 ES9016 DAC 384kHz/32bit ES9016 LPFLPF MAINMAIN InputInput DAMP MAINDAMP MAIN COM COM INPUT SELECTOR INPUT SELECTOR (NJW1112)(NJW1112)DAMP SUBDAMP SUB Gate Driver Gate Driver 12V Reg12V Reg LPFLPF E.VolumE.Volume e +11dB (NJW1194) +11dB (NJW1194) 3dBPWMPWM -12V Reg -12V Reg +12V Reg +12V Reg -15V -1
45、5V RELAY RELAY RELAY RELAY RegReg +15V Reg +15V Reg +5V Reg+5V Reg +3.3V Reg +3.3V Reg +3.3V Reg +3.3V Reg +1.2V Reg +1.2V Reg +3.3V Reg +3.3V Reg FRONTFRONT +3dB APDAPD (NJU7181)(NJU7181) for RECOUT&APD for AMPOUT P-P-AMP DIRECT AMP DIRECT Differential Bufffer 0dB signal : inversion GND : inversion
46、 0dB TONE & LOUDNESS TONE & LOUDNESS -15V Reg-15V Reg +15V Reg+15V Reg -8V Reg-8V Reg +8V Reg+8V Reg -5V Reg-5V Reg +5V Reg+5V Reg+6V TR+6V TR POWERPOWER MM/MCMM/MC XLRXLR for APD PHONOPHONO 1 2 3 1 2 3 for APD BAL/UNBAL BAL/UNBAL BAL/UNBAL BAL/UNBAL BufferBuffer BALBAL UNBAL forHP UNBAL forHP 2c2ch
47、 RELAY h RELAY *2*2 2c2ch RELAYh RELAY 2c2ch RELAYh RELAY HPAMP SMALL SIGNAL RELAY A-70DA/A-70A only PCM/DSDPCM/DSD MC:A-70 only BalancBalance support e support E.Volume (NJW1195) +11dB E.Volume (NJW1195) +11dB Phase switching DA model only DA model only DA model only HP 10 A-70DA-K 1234 A B C D E F
48、 1234 5. DIAGNOSIS 5.1 TROUBLESHOOTING YES NO Is the power supply turned ON ? Protection circuit is operating (For the type, refer to the 5.2 PROTECTION CIRCUIT DESCRIPTION) Is the standby LED blinking ? Connection failure between CN4100 and BN94 Connection failure between CN4000 and CN2017 Connecti
49、on failure between BN12 and CN2012 X101,R108,R109,C102,C103 : solder failure Q7201-Q7206: failure R7589,R7590,R7592,R7598 : disconnection Connection failure between CN4100 and BN94 Connection failure between CN4000 and CN2017 Connection failure between BN12 and CN2012 R189,R163,Q101,C125 : solder failure or failure RY4000,RY4100: failureA
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