Aiwa CDC-X437 User Manual

1Ver 1.0 2003. 01Model Name Using Similar Mechanism NEWCD Drive Mechanism Type MG-930A-185Optical Pick-up Name OPTIMA-752B2SERVICE MANUALUS ModelCana

10CDC-X237/X4372-9. LEVER ASSY (CD UP HOLDER)2-10. LEVER (CD ROLLER) SUB ASSY1 P 1.4x23 special screw4 tension spring5 lever assy (CD up holder)2 leaf

11CDC-X237/X4372-11. LEVER ASSY (CD HOLDER)2-12. MOTOR (SLED) SUB ASSY2 special screw1 torsion spring4 lever assy (CD holder) 31 P 1.7x22 motor (sled)

12CDC-X237/X4372-13. PICK-UP SUB ASSY1 B 1.4x52 leaf spring3 pick-up sub assy

13CDC-X237/X4373-1. IC PIN DESCRIPTIONS• IC202 LC78622NE (DIGITAL SIGNAL PROCESSOR) (SERVO BOARD)Pin No. Pin Name I/O Pin Description1 DEFI I Defect d

14CDC-X237/X437Pin No. Pin Name I/O Pin Description42 RMUTE O Right channel mute signal output General-purpose input/output pin 843 XVDD — Crystal

15CDC-X237/X437• IC901 LC72358N-9B50 (SYSTEM CONTROL) (MAIN BOARD)Pin No. Pin Name I/O Pin Description1 XIN I System clock oscillator input (4.5 MHz)2

16CDC-X237/X437Pin No. Pin Name I/O Pin Description55 LCD-DI I LCD driver date signal input56 REMOTE IN I Remote controller input, pulled up when not

17 17CDC-X237/X4373-2. BLOCK DIAGRAM — CD SECTION —(Page 18)54 53 52 56 545815 2928 26 271651504944434241403938373635343332576119535544454037101213141

1818CDC-X237/X4373-3. BLOCK DIAGRAM — MAIN SECTION —(Page 17)(Page 19)116AMANTJ101(ANTENNA)2FMANTTUN-RCHLCH17RCH22SD/STTU101(TUNER UNIT)AUX-RCH1564121

19 19CDC-X237/X4373-4. BLOCK DIAGRAM — FRONT SECTION —(Page 18)61626364LCD DRIVERIC6011S1LCD601LIQUIDCRYSTALDISPLAY5I35•41I4344I4950I52S5IS35KS1IKS6KI

2CDC-X237/X437CAUTIONUse of controls or adjustments or performance of proceduresother than those specified herein may result in hazardousradiation exp

2020CDC-X237/X4373-6. PRINTED WIRING BOARDS — CD MECHANISM SECTION — • Refer to page 19 for Circuit Boards Location.Note:The components identi-fied b

21 21CDC-X237/X437(Page 23)1ABCDEFGHIJ2345678910111213IC201Q205Q206R254R232Q203IC202C228CON201R214C253R243R223R212R252C256C265R271R237R221C217C240R205

2222CDC-X237/X437• Refer to page 19 for Waveforms.3-7. SCHEMATIC DIAGRAM — CD MECHANISM SECTION — • Refer to page 28 for IC Block Diagrams.Note:•Volt

23 23CDC-X237/X4373-8. PRINTED WIRING BOARD — MAIN SECTION — • Refer to page 19 for Circuit Boards Location.(Page 21)(Page 26)1ABCDEFGHIJ234567891011

2424CDC-X237/X437(Page 27)• Refer to page 19 for Waveform.3-9. SCHEMATIC DIAGRAM — MAIN SECTION (1/2) — • Refer to page 28 for IC Block Diagram.(Page

25 25CDC-X237/X4373-10. SCHEMATIC DIAGRAM — MAIN SECTION (2/2) — • Refer to page 28 for IC Block Diagram.(Page 24)IC B/DSHUTDOWN MUTESHUTDOWN

2626CDC-X237/X4371ABCDEFGHI234567891011121314D672D673D653D641D642D651D671S617D652TP631TP1TP2TP4R643D681R651D682C601R610Q671R673R605R641R653R662R672C68

27 27CDC-X237/X4373-12. SCHEMATIC DIAGRAM — FRONT SECTION — • Refer to page 29 for IC Block Diagrams.Note:•Voltage is dc with respect to ground under

2828CDC-X237/X437IC201 LA9241M (SERVO Board)3-13. IC BLOCK DIAGRAMSIC501 TA8272H (MAIN Board)IC401 LC75421M-TLM-E (MAIN Board)IC203 LA6557H-TE-L (

29CDC-X237/X437IC601 LC75853NW (KEY Board)IC681 SBX1971-52P (KEY Board)49KS6KI1KI2KI3KI4KI5TESTVDDVDD1VDD2VSS505152535432S32S31S2831S3030S29292827S2

3TABLE OF CONTENTS1. GENERALConnections ... 42. DISASSEMBLY2-1. Sub Panel

30CDC-X237/X437SECTION 4EXPLODED VIEWSRef. No. Part No. Description Remark4-1. CHASSIS SECTIONRef. No. Part No. Description RemarkNOTE:• The mechanica

31CDC-X237/X4374-2. FRONT PANEL SECTIONRef. No. Part No. Description RemarkRef. No. Part No. Description Remark51 X-3383-548-1 PANEL (SVX) ASSY (X237)

32CDC-X237/X4374-3. CD MECHANISM SECTION (1) (MG-930A-185)Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark101 X-3383-09

33CDC-X237/X4374-4. CD MECHANISM SECTION (2) (MG-930A-185)Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark151 A-3337-43

34CDC-X237/X437SECTION 5ELECTRICAL PARTS LISTNOTE:• Due to standardization, replacements inthe parts list may be different from theparts specified in

35CDC-X237/X437Ref. No. Part No. Description Remark Ref. No. Part No. Description RemarkKEYMAINS612 1-762-365-21 SWITCH, TACTILE (TU)S613 1-572-596-21

36CDC-X237/X437Ref. No. Part No. Description Remark Ref. No. Part No. Description RemarkMAINC907 1-124-259-11 ELECT 4.7uF 20% 35VC911 1-162-927-11 CER

37CDC-X237/X437Ref. No. Part No. Description Remark Ref. No. Part No. Description RemarkMAIN< RESISTOR >R101 1-216-857-11 METAL CHIP 1M 5% 1/10W

38CDC-X237/X437Ref. No. Part No. Description Remark Ref. No. Part No. Description RemarkMAINR910 1-216-845-11 METAL CHIP 100K 5% 1/10WR911 1-216-833-1

39CDC-X237/X437Ref. No. Part No. Description Remark Ref. No. Part No. Description RemarkSERVOQ202 8-729-920-21 TRANSISTOR DTC314TKH04Q203 8-729-920-

4CDC-X237/X437SECTION 1GENERALThis section is extractedfrom instruction manual.

40CDC-X237/X437Ref. No. Part No. Description RemarkACCESSORIES************1-477-833-11 REMOTE COMMANDER (RM-Z303) (X437)3-250-255-01 COLLAR3-251-485-1

41CDC-X237/X437MEMO

42CDC-X237/X437REVISION HISTORYClicking the version allows you to jump to the revised page.Also, clicking the version at the upper right on the revise

5CDC-X237/X437SECTION 2DISASSEMBLYNote : This set can be disassemble according to the following sequence.2-1. SUB PANEL ASSY(Page 6)2-2. CD MECHANISM

6CDC-X237/X4372-2. CD MECHANISM BLOCKNote : Follow the disassembly procedure in the numerical order given.2-1. SUB PANEL ASSY4 sub panel assy3 claws2

7CDC-X237/X4372-4. MAIN BOARD2-3. MAIN BOARD SECTION2 cover3 insulation sheet4 Removal the solder.7 MAIN board section5 Removal the solder.6 Removal t

8CDC-X237/X4372-5. HEAT SINK (CT)2-6. SUB BOARD4 heat sink (CT)1 screw (2.6x8)2 P 3x123 PTT 2.6x83 SUB board1 Removal the solders.2 P 1.4x2blackbrownb

9CDC-X237/X4372-8. FLOATING BLOCK ASSY2-7. SERVO BOARD3 PTT 2x34 screws (M1.7x4)5 SERVO board2 PIC2 FLEXIBLE board1 Removal the solders.whitegryorange