Akai ACR-129MMU Service Manual Download Page 3

 

3

DISASSEMBLY INSTRUCTIONS 

 

1.    Using the unlock key that came with the unit or a similar tool, unlock the Mounting Box and remove toward 

the rear of the unit. 

 

2.    Remove two screws (A) located on the rear of the top cabinet then remove the Top Cabinet. 

 

3.  Remove two screws (B) located on the rear of the bottom cabinet then remove the Bottom Cabinet. 

 

4.  Take out the Front Panel and the Ring. 

Remove two screws (C) from on the front side of the Base. 

 

5.  Remove two screws (D) from on the right side of the Rear-right Cabinet. 

Remove the screw (E) from on the left side of the Rear-right Cabinet and the screw (F) on the right side of 

the heat sink. 

 

6.    Remove two screws (G) from under the deck front bracket then remove the Deck Front Bracket. 

Remove two screws (H) from under the deck rear bracket then remove the Deck Rear Bracket and the Deck. 

 

7.    Remove two screws (I) from on the back of the Rear-right Cabinet then remove the IC Bracket (7805). 

 

8.    Remove two screws (J) from on the left side of the heat sink. 

 

9.    Remove two screws (K) from on the left side of the heat sink then remove the IC Bracket. 

 

10.    Remove two screws (L) from on the rear side of Rear-right Cabinet then remove the Power IC Bracket. 

 

11.    Remove the screw (M) from on the back of the side bracket then remove Wire Clip. 

 

12.    Remove two screws (N) from under the main board then remove two SD PCB Brackets and the SD Card 

PCB Board. 

 

13.    Remove two screws (O) from each side of the base then remove the Base. 

 

14.    Remove three screws (P) from under the main board then remove the Heat Sink, Rear-right Cabinet and the

 

Main Board.

 

 
   
 
 
 
 
 

Summary of Contents for ACR-129MMU

Page 1: ...SERVICE MANUAL Models ACR 129MMU CD MP3 USB RDS RECIVER www akai ru...

Page 2: ...nt Locations 7 Alignment Procedures 8 Printed Circuit Boards 9 Exploded Views Panel 16 Exploded View Parts Lists Panel 17 Exploded Views Cabinet 18 Exploded View Parts Lists Cabinet 19 Exploded Views...

Page 3: ...ont bracket then remove the Deck Front Bracket Remove two screws H from under the deck rear bracket then remove the Deck Rear Bracket and the Deck 7 Remove two screws I from on the back of the Rear ri...

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

Page 5: ...l FM MW 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...

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

Page 7: ...7 ALIGNMENT LOCATIONS MITSUMI BOARD...

Page 8: ...p 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 p...

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 SD MMC CARD BOARD...

Page 16: ...16 EXPLODED VIEW PANEL...

Page 17: ...RK L Up S N0000 ROHS BND Crystal Blue PMS291C ROHS Adaptor For BND ROHS EJ L Up S N0000 ROHS Decorated Ring S N0000 ROHS LOC MON DSP MUT L UP S N0000 ROHS 4D Knob Clear Blue ROHS Adaptor For 4D ROHS B...

Page 18: ...18 EXPLODED VIEW CABINET...

Page 19: ...PCB Bracket ROHS IC Bracket 7805 ROHS Power IC Bracket ROHS IC Bracket For Regulator ROHS Wire Clip 1 0MM ROHS Screw 5X18 HH ROHS Spring Washer M5 ROHS Hexagon Nut M5 ROHS Screw 2 6 X 4 BH MS ROHS Sc...

Page 20: ...20 EXPLODED VIEW DECK...

Page 21: ...AD 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...

Page 22: ...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...

Page 23: ...23 SCHEMATIC DIAGRAM MAIN BOARD...

Page 24: ...24 SCHEMATIC DIAGRAM KEY BOARD...

Page 25: ...25 SCHEMATIC DIAGRAM CD SERVO BOARD...

Page 26: ...ROHS 2 Q807 0100 008550 03 TR PNP SS8550C TO 92 B ROHS 1 D802 0200 004001 00 DIODE IN4001 DO 41 ROHS 1 D803 D805 0200 004148 00A DIODE 1N 4148 DO 35 TAPPING ROHS 2 D601 D806 D632 D808 0200 004148 02 D...

Page 27: ...22uF 16V 20 4 7MM ROHS 2 C712 0600 016336 02 E CAP 33uF 16V 20 6 3 5MM ROHS 1 C810 0600 016338 00S E CAP 3300uF 16V 20 13 25MM ROHS 1 C614 C619 C624 627 C703 70 6 C301 C302 0600 050225 02 E CAP 0 22uF...

Page 28: ...HS 20 R613 0700 063474 00 RES SMD 470K 5 1 10W 0603 ROHS 1 R622 R665 R666 0700 063512 00 RES SMD 5 1K 5 1 10W 0603 ROHS 3 R809 812 R311 R331 0700 063561 00 RES SMD 560 5 1 10W 0603 ROHS 6 R661 R662 07...

Page 29: ...SMD 47K 5 1 10W 0603 ROHS 1 R206 0700 063822 00 RES SMD 8 2K 5 1 10W 0603 ROHS 1 L201 0900 070470 04 M INDUCTOR AL03TO4R7 AXIAL ROHS 1 PC BOARD ASSY KEY BOARD 0200 001007 09 LED BACK LIGHT WHITE QB020...

Page 30: ...3500 010002 00 FIBRE WASHER 2X6X0 4MM ROHS 2 PC BOARD ASSY SDK CD SERVO BOARD R303 304 0700 063272 00 RES SMD 2 7K 5 1 10W 0603 ROHS 2 R301 302 0700 063392 00 RES SMD 3 9K 5 1 10W 0603 ROHS 2 1111 300...

Page 31: ...V 5 NPO 0603 ROHS 2 C51 0500 063474 01 CER CAP SMD 0 47uF 25V 80 20 Y5V 0603 ROHS 1 C20 0500 063683 01 CER CAP SMD 0 068uF 50V 10 X7R 0603 ROHS 1 C64 0500 063821 00 CER CAP SMD 820PF 50V 5 NPO 0603 RO...

Page 32: ...10W 0603 ROHS 6 R9 R22 R24 R40 R120 R121 0700 063473 00 RES SMD 47K 5 1 10W 0603 ROHS 6 R11 0700 063563 00 RES SMD 56K 5 1 10W 0603 ROHS 1 R6 R10 0700 063683 00 RES SMD 68K 5 1 10W 0603 ROHS 2 R33 R10...

Page 33: ...kHz 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 65 0 7...

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