Akai-ACA-2624-Service-Manual(1) 电路图 维修手册.pdf

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1、? ? ? RadioFans.CN 收音机爱 好者资料库 Circuitry Frame ACA- 2664 ACA- 2624 IC302BIC303BIC303A POWER AMP SW301B RL- OUT RR- OUT 57 LPF HPF OFF 31 75 VR302AVR303DVR303C IC302AIC403BIC403ASW301A 5731 LPF HPF OFF 31 75 VR302BVR303BVR303A +12V D.C. REM F01 T07 T08 T01- 04 T09,T10 T11- T16 T100,T200 T300,T400 T01

2、IC02 IC03 VEE VCC +/- 15 T17 T166,T167 T266,T267 T366,T367 T466,T467 PTOTECT MUTE CONTROL TRANS W/2 CH3 W/2 Rated Distortion: 10% CH1 W/2 CH3 W/2 Max. output power CH1 W/2 CH3 W/2 4BTL Output power Rated Distortion: 0.7% W Car audio amplifier capability request Client Name: AKAI Serial Number : Cond

3、itionCapability request Sample1： Model Name: ACA-2624Accomplished Qty: PO. Number:Accomplished Date: 1 Gain-frequency response Work normally Front L/RCH2: +1/-3 Rear L/R+1/- 3 (10Hz20kHz) CH3: +1/-3CH4: +1/-3 dB +1/- 3 (10Hz20kHz) CH1: +1/-3 2 Total harmonic distortion and noise Work normally 10W,4

4、Front L/R Rear L/R %0.7% CH1: 0.07CH2: 0.04 CH3: 0.04CH4: 0.05 3 Normal Output power(4) Rated Distortion: 0.7% Front L/R Rear L/R Rated Distortion:10% Front L/R Rear L/R Max. output power Front L/R CH4: 44.26 CH1: 66.80CH2: 65.47 CH3: 65.52CH4: 65.46 CH1: 89.45CH2: 88.03 Rear L/RCH3: 89.00CH4: 89.54

5、 WProduct specification CH1: 47.38CH2: 47.71 CH3: 44.52 CH3: 66.01CH4: 68.47 Normal Output power(2) Rated Distortion: 0.7% Front L/R W Rated Distortion: 10% Front L/R Max. output power Front L/R CH2: 32.98 Rear L/RCH3: 34.98CH4: 35.78 CH1: 106.95CH2: 95.48 Rear L/RCH3: 97.72CH4: 101.65 Product speci

6、fication CH1: 69.84CH2: 65.87 Rear L/R CH1: 31.20 5 Signal noise ratio (Input Terminal Short) Rated 1kHz Distortion: 10% Front L/R Signal noise ratio (Input Terminal Open) Rated 1kHz Distortion: 10% Front L/R output noise No signal input (Input Terminal Open) CH2: 95.0/97.4 Rear L/RCH3: 92.1/94.4CH4

7、: 94.9/96.8 dB 71 Full range 76 A-Weighting CH1: 92.2/95.3 CH2: 93.4/96.9 Rear L/RCH3: 95.0/98.1CH4: 94.1/96.3 dB 71 Full range 76 A-Weighting CH1: 94.3/98.6 mV3 2.0/2.0 2.0/2.0 6Separation Work normally Distortion:0.7% 1 kHz 10 kHz dB 40CH1 & CH2: 46/46CH3 & CH4: 46/48 30CH1 & CH2: 39/41CH3 & CH4:

8、44/42 7Be sensitive to input Volume max Distortion:10% High input mVProduct specification - Low input170 Capability Request / ACA-2624 1/2 NOItemUnit Car audio amplifier capability request Client Name: AKAI Serial Number : ConditionCapability request Sample1： Model Name: ACA-2624Accomplished Qty: PO

9、. Number:Accomplished Date: Work normallyFrequencykHz No signal inputAmplifier: 25.95Preamp: +/- 16 THD10% 2Amplifier: 23.12Preamp: +/- 15 THD10% 4Amplifier: 23.75Preamp: +/- 16 1/2f23 HzCH1 & CH2: + 8CH3 & CH4: +8 f45 HzCH1 & CH2: + 12CH3 & CH4:+12 2f90 HzCH1 & CH2: + 8CH3 & CH4: +8 1/2f15 HzCH1 &

10、CH2: - 0.5CH3 & CH4: -0.5 f30 HzCH1 & CH2: - 3CH3 & CH4: -3 2f60 HzCH1 & CH2: - 8CH3 & CH4: -8 1/2f100 HzCH1 & CH2: - 0.5CH3 & CH4: -0.5 f200 HzCH1 & CH2: - 3CH3 & CH4: -3 2f400 HzCH1 & CH2: - 12CH3 & CH4: -12 1/2f17 HzCH1 & CH2: - 16CH3 & CH4: -16 f35 HzCH1 & CH2: - 3CH3 & CH4: -3 2f70 HzCH1 & CH2:

11、 + 1CH3 & CH4: +1 1/2f2.25 KHzCH1 & CH2: - 7CH3 & CH4: -7 f4.5 KHzCH1 & CH2: - 3CH3 & CH4: -3 2f9 KHzCH1 & CH2: - 1CH3 & CH4: -1 Operated by: Xiaoyulin Approved by: Zhaozhigang 8 On-off power part testing Product specification 37.02 Power supply voltage V Output in-phase CH1&CH2 contra-phase / CH3&C

12、H4 contra-phase 10 Gain difference between channels Volume output ( maxmax decrese 46dB ) dB 31.5 9Phase between channelsIn-phaseWork normally- Not self-excitation and parasitism OK 12Bass boost rangedBProduct specification 11StabilityRated- Low-Pass crossover （Max.） dBProduct specification 13 Low-P

13、ass crossover （Min.） dBProduct specification High-Pass crossover （Max.） dBProduct specification 14 High-Pass crossover （Min.） dBProduct specification 15Power supply (Rated) Distortion:10% WProduct specification / Static/ 16Function testing Power on delay Product specificationDC offset Protection Amp

14、lifier on/off 3s Remote SwitchOK Short circuit ProtectionOK OK no sound on/offOK caraudio on/offOK OK Temperature testing1/3 Max. Power 4hours testingOK 17 terminal short-circuit testing Heat sink with power supply (+/-) terminal、speaker (+/-) terminal、 VR crust 、RCA terminal No noise or spark OK power supply (+) terminal with speaker (+/-) terminal、VR crust 、RCA terminal OK power supply (-) terminal with speaker (+/-) terminal、VR crust 、RCA terminal OK Note: Power supply voltage: 14.0V Date: 2006/03/01 Capability Request / ACA-2624 2/2