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Akai ACR-127MMC, Service Manual

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Akai ACR-127MMC Service Manual Download Page 36

 

36

SPECIFICATIONS 

 

T. H. D........................................................................................................................................... Less than 0.35% 

Signal to Noise Radio ................................................................................................................... More than 60 dB 

Channel Separation ...................................................................................................................... More than 60 dB 

Frequency Response .......................................................................................................................... 20Hz-20kHz 

Stereo Separating (FM) .................................................................................................................. 30 dB (at 1kHz) 

Signal to Noise Ratio (FM) .......................................................................................................... Better than 50 dB 

Output Power............................................................................................................................................. 4 X 40W 

Speaker Output Impedance...................................................................................................................4 To 8 ohm 

Power Source ................................................................................................................DC 12V, Negative ground. 

Frequency Range ...................................................................................................................... FM 87.5 - 108MHz 

.................................................................................................................................................. MW 522 -1620 kHz 

..................................................................................................................................................... LW 144 -288 kHz 

Sensitivity............................................................................................................................... FM 3 µV (S/N=30dB) 

......................................................................................................................................... MW 32 dBµ (S/N=20 dB) 

.......................................................................................................................................... LW 35 dBµ (S/N=20 dB) 

 

Specifications are subject to change without notice. 

Summary of Contents for ACR-127MMC

Page 1: ...SERVICE MANUAL Model ACR 127MMC CD MP3 RECIVER www akai ru ...

Page 2: ...ent Locations 7 Alignment Procedures 8 Printed Circuit Boards 9 Exploded Views Panel 18 Exploded View Parts Lists Panel 19 Exploded Views Cabinet 20 Exploded View Parts Lists Cabinet 21 Exploded Views Deck 23 Exploded View Parts Lists Deck 24 Schematic Diagram 26 Electrical Parts List 29 Specifications 36 ...

Page 3: ...two screws G from under the deck rear bracket then remove the Deck Rear Bracket and the Deck 7 Remove the screw H from on the right side of the side bracket then remove the IC Bracket 8 Remove two screws I from on the left side of the heat sink then remove the Spring Sheet 9 Remove three screws J from on the left side of the heat sink then remove the Heat Sink 10 Remove the screw K from on the bac...

Page 4: ...4 DISASSEMBLY DIAGRAM ...

Page 5: ...ut level FM MW LW Power source voltage DC 14 0V Backup voltage is the same as this AF load impedance 4 ohm pure resistance Balance Center position of level Tone Center position The signal strength read in this section is voltage on the antenna Test Diagram 4 SPEAKER VTVM DISTORTION METER 2 SPEAKER FRONT SPK SPK FL RL SPR MAIN UNIT AM SG VTVM ANTANNA DUMMY FM SG MODULATOR STEREOS MPX ANT FRONT SPK ...

Page 6: ...6 BLOCK DIAGRAM ...

Page 7: ...7 ALIGNMENT LOCATIONS FM TUNER BOARD ...

Page 8: ...ep Generator Coupling Generator Display Setting Adjustment Remarks Stereo Separation Signal Generator to antenna receptacle 98 1 MHz Int 1 kHz Dev 75 kHz L R 90 pilot 10 98 1 MHz VR1 Adjust AF output power at maximum separating more than 30 dB FM SNC Adjustment 98 1 MHz Dev 75 kHz L R 90 Int 1 kHz 60dBµV output 98 1 MHz 40 dBµ 98 1 MHz VR2 Stereo Separation 25 dB 5 dB Stop Sens Signal Generator to...

Page 9: ...9 PRINTED CIRCUIT BOARDS MAIN BOARD TOP VIEW ...

Page 10: ...10 MAIN BOARD BOTTOM VIEW ...

Page 11: ...11 KEY BOARD TOP VIEW ...

Page 12: ...12 KEY BOARD BOTTOM VIEW ...

Page 13: ...13 CD SERVO BOARD TOP VIEW ...

Page 14: ...14 CD SERVO BOARD BOTTOM VIEW ...

Page 15: ...15 FRONT EJ BOARD TOP VIEW ...

Page 16: ...16 FRONT EJ BOARD BOTTOM VIEW ...

Page 17: ...17 SD CARD PCB BOARD ...

Page 18: ...18 EXPLODED VIEW PANEL ...

Page 19: ... 0 DSP Key L Up OPC0000 8TUNE SKIP 9TUNE SKIP Key L Up OPC0000 AMS Key Crystal Purple PMS2572C 2175 Adaptor 02 B Light 01 B Light 02 B Light 03 Key Board CD115 ROTATE ENCODER VOL LCD Cover CD 158 TN NGE M Color PIN TYPE LED B L QB02002 09 23 5X99 WHT Axis Post Right Side Block Contact Spring Left Side Block E Ring Ø1 5X4X0 4 MM Screw Ø1 7X4 PH ST Screw Ø2X8 BA ST Black 53 J2122 333 51 J2121 31A 51...

Page 20: ...20 EXPLODED VIEW CABINET ...

Page 21: ...et Damper Gear Ass y 19 24 T Q Middle Gear F Left Bracket Deck Front Bracket Deck Rear Bracket MITSUMI TUNER FAE391 A01 FM Cover IC Bracket 7805 SD PCB Board PCB Bracket GOODMANS SD PCB Bracket Spring Sheet Heat Sink 7809 DB435 Wire Clip 1 0MM Screw Ø5X18 HH Spring Washer M5 51 G2121 30G 51 E2126 00 61 E2005 04 94 01684 12 61 E2006 00 61 B0105 01 61 B0114 01 35 B0101 00 11 20050 089 61 07211 03 81...

Page 22: ... Black Screw Ø2X6 PA ST Black Screw Ø2 6X4 BH MS Screw Ø2 6X5 BH TAPTITE Screw Ø2 6X6 PH MS Screw Ø2 6X6 BH MS Screw Ø2 6X6 PH MS Black Screw Ø2 6X8 BH MS Screw Ø2 6X10 BH MS Screw M2 6X20 PH MS 35 40005 00 40 12003 09H 40 12004 21 40 12006 20 40 02604 01 40 02605 03 40 02606 00 40 02606 01 40 02606 20 40 02608 01 40 02610 01 40 02620 00 ...

Page 23: ...23 EXPLODED VIEW DECK ...

Page 24: ...OAD D GEAR LOAD B GEAR LOAD A PIN LOAD B K GEAR MOTOR GEAR WORM SERVO PCB ASSY SPECIAL SCREW S P RO L SUPPORT DAMPER S P RO CHASSIS MAIN ST 23G FR CA H 0 TT 2 3 SECC T1 0 POM F20 03 POM F20 03 POM F20 03 SLICON SUS 303 SUM24L NI PLATE PVC SECC T1 0 SUM24L NI PLATE SUM24L NI PLATE POM F20 03 POM F20 03 CR WRT POM F20 03 POM F20 03 POM F20 03 SUS304WPB SUS304WPB POM F20 03 POM F20 03 POM F20 03 POM ...

Page 25: ...RING TENSION GEAR PU LEAD SCREW SWITCH SCREW PICK UP FPC WIRE SPRING PU FIBER PAPER S P CAM TRANSIT SCREW INSULATOR COVER SWITCH WASHER PE S P BASE POM F20 03 SECC T1 0 SUS304WPB ABS G F 20 POM F20 03 SUM24L NI PLATE CA H 0 M S 1 7 2 5 SUM24L NI PLATE BUTHYL SUS304WPB RF 400CA 12265 HYTRELL 5526 POM F20 03 CA H 0 M S 2 2 FF 050SH 11190 POM F20 03 KNN11 PCD18 R H W W TTB2 5 1007 28 SUS304WPB POM F2...

Page 26: ...26 SCHEMATIC DIAGRAM MAIN BOARD ...

Page 27: ...27 SCHEMATIC DIAGRAM KEY BOARD ...

Page 28: ...92 82K U3 CS5341 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 M0 MCLK VL SDOUT GND VD SCLK LRCK RST AINL VQ AINR VA REF_GND FILT M1 U6 HY57V161610ET 7 35 26 50 10 21 22 23 24 27 28 29 30 31 32 2 3 5 6 8 9 11 12 39 40 42 43 45 46 48 49 16 34 14 36 17 15 18 7 13 38 44 1 25 20 19 4 33 37 47 41 CLK VSS VSS VSSQ A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 DQ0 DQ1 DQ2 DQ3 DQ4 DQ5 DQ6 DQ7 DQ8 DQ9 DQ10 DQ11 DQ12 DQ13 DQ14 DQ...

Page 29: ...05 63330 00 05 63474 02 06 10107 01 06 10107 02 TR BD435 TO 126 FAIRCHLD TR BD436 PNP TO 126 SAMSUNG TR 2SA812 TRANSISTOR B1240 TRANSISTOR 2SC3875G IC REGULATOR 78L05 TR 8550C TO 92 B E S D DIODE NNCD6 2G 5PIN DIODE IN4001 DIODE 1N 4148 AT TAPPING DIO CHIP RLS4148 1206 ROHM DIODE IN5401 ZENER DIODE 3 6V 0 5W AT 2 ZENER DIODE 10V 0 5W AT TAPE 2 I C PT2313L I C BA 4558F CPU RS5802 001 CD USB MMC RDS...

Page 30: ...3101 00 07 63102 00 07 63103 00 07 63104 00 07 63105 00 07 63122 00 07 63152 00 07 63182 00 07 63184 00 E CAP 220µF 10V Ø6MM MINI E CAP 47µF 10V Ø4X7 MINI E CAP 10µF 16V Ø4X7MM E CAP 100µF 16V Ø6 3X7MM E CAP 22µF 16V Ø4X7MM E CAP 220µF 16V E CAP 3300µF 16V 105 C E CAP 47µF 16V Ø6 3X5MM E CAP 1µF 50V Ø4X7 MM E CAP 2 2µF 50V Ø4X7 MM E CAP 0 33µF 50V Ø4X7MM E CAP 3 3µF 50V Ø4X7MM E CAP 0 47µF 50V Ø4X...

Page 31: ...SMT CHIP RES 7 5kΩ 5 0603 SMT CHIP RES 820Ω 5 0603 SMT CHIP RES 8 2kΩ 5 0603 SMT CHIP RES 82kΩ 5 0603 SMT MICRO INDUCTOR 10UH AXIAL TYPE M INDUCTOR AL03T04R7 AXIAL CD200Y USB 182X152X1 6MM RING COIL Ø27X12MM V TYPE XC 169 110µH 3 9 4 4 1 5 1 1 3 6 11 1 4 1 4 4 1 1 1 1 1 PC BOARD ASSY FM TUNER SECTION C114 5 R141 R111 2 TUNER 05 63682 01 07 05222 16A 07 63562 00 29 00391 01 CHIP 6800PF 10 X7R 0603 ...

Page 32: ...CHIP 680PF 5 NPO 0603 SMT RES 100Ω 1 4W CHIP RES 1kΩ 5 0603 SMT CHIP RES 10kΩ 5 0603 SMT CHIP RES 1 2kΩ 5 0603 SMT CHIP RES 1 5kΩ 5 0603 SMT CHIP RES 15kΩ 5 0603 SMT CHIP RES 180Ω 5 0603 SMT CHIP RES 220Ω 5 0603 SMT CHIP RES 2 2kΩ 5 0603 SMT CHIP RES 330Ω 5 0603 SMT CHIP RES 33kΩ 5 0603 SMT CHIP RES 390Ω 5 0603 SM CHIP RES 470Ω 5 0603 SMT CHIP RES 47kΩ 5 0603 SMT CHIP RES 51kΩ 5 0603 SMT CHIP RES ...

Page 33: ...C SD DSP TCC760 TQFP 128 TELECHIPS VOLTAGE LDO REGULATOR IC IP1642L INTERPION A D CONVERTER IC CS5341 DZZ CIRRUS LOGIC IC 5 CH MOTOR DRIVER IP9004 INTERPION 1MX16 SDRAM HU57V161610ET 71 TSOP 50 HYNIX SST FLASH 39VF 800A 70 4I EK TSOP 48 IC µPD 637120NEC LQFP100 CRYSTAL HC 49 US 12MHZ CRYSTAL HC 49 US 16 9344MHZ TAN CAP 10UF 16V 10 TAN CAP 10UF 16V 10 1206 SMD CHIP CAP 2PF 5 NPO 0603 SMT CHIP CAP 3...

Page 34: ... 09 31601 00 CHIP RES 1 5Ω 0603 SMT CHIP RES 3 0Ω 5 0603 SMT CHIP RES 5 1Ω 5 0603 SMT CHIP RES 10Ω 5 0603 SMT CHIP RES 100Ω 5 0603 SMT CHIP RES 1kΩ 5 0603 SMT CHIP RES 10kΩ 5 0603 SMT CHIP RES 100kΩ 5 0603 SMT CHIP RES 1MΩ 5 0603 SMT CHIP RES 10MΩ 5 0603 SMT CHIP RES 120Ω 5 0603 SMT CHIP RES 1 2kΩ 5 0603 SMT CHIP RES 12kΩ 5 0603 SMT CHIP RES 150Ω 5 0603 SMT CHIP RES 15kΩ 5 0603 SMT CHIP RES 18kΩ 5...

Page 35: ...3222 00 07 63393 00 07 63471 00 07 63472 00 07 63473 00 11 21761 348 16 01140 04A 16 51377 00A 25 00100 06 25 00100 07 25 00100 08 25 32145 02 25 F0217 20A TR BD435 NPN TO 126 FAIRCHLD TR 2SA812 TRANSISTOR 2SC3875G TR 8050C TO 92 B SMD LED S172DNB4 5 0805 BLUE DIODE IN 4148 AT TAPPING LED Ø3MM RED WIDE ANGLE PLAMP 3V 40MM 3X7 K T ZENER DIODE 10V 0 5W AT TAPE 2 CHIP 0 22µF 10 X7R 0603 SMT E CAP 22µ...

Page 36: ...o Separating FM 30 dB at 1kHz Signal to Noise Ratio FM Better than 50 dB Output Power 4 X 40W Speaker Output Impedance 4 To 8 ohm Power Source DC 12V Negative ground Frequency Range FM 87 5 108MHz MW 522 1620 kHz LW 144 288 kHz Sensitivity FM 3 µV S N 30dB MW 32 dBµ S N 20 dB LW 35 dBµ S N 20 dB Specifications are subject to change without notice ...

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