Sony CDX-2250 free download

File name CDX-2250.pdf

CDX-2250/3500 SERVICE MANUAL US Model Canadian Model CDX-2250 E Model CDX-3500 Photo: CDX-2250 SPECIFICATIONS Model Name Using Similar Mechanism CD Drive Mechanism Type Optical Pick-up Name CDX-2180 MG-363X-121 KSS-521A FM/AM COMPACT DISC PLAYER MICROFILM ­1­ SECTION 4 DIAGRAMS 4-1. IC PIN DESCRIPTION · IC801 µPD17705GC-537-3B9 (SYSTEM CONTROL) Pin No. Pin Name I/O 1 SIRCS I SIRCS input (A/D) 2 3 4 5 6 7 8 9 10 11 12 13 14, 15 16 17 18 19 20 21 22 23, 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 IN-SW D-SW SELF-SW L-SW LM-EJ LM-LOD AMP/ANT-ON MONO SD BAND-SW AREA1-SW AREA2-SW RE1, 2 SEEK CD-ON FM-ON TU-ON NC GND3 KEYIN3 KEYIN2, 1 ROT-IN S-METER TEST-SW AM-IFC FM-IFC VDD2 VCOH-FM VCOL-AM GND2 NC EO1-PDOUT TESTO AM-ON(TU-ON) FM-ON(FM/AM) LCL/DX BEEP ACC-IN SCOR MUTE AMP-MUTE TEL-MUTE NC VOL-CE VOL-CLK VOL-DATA EMPHO PW-ON MD-ON CD-ON I I I I O O O O I I I I I O I/O I/O I/O -- -- I I I I I I I -- I I -- -- O -- O O O O I I O O O -- O O O O O O O CD mechanism position detection CD mechanism position detection CD mechanism position detection LIMIT switch Loading motor control (Eject direction) Loading motor control (Loading direction) Power control for amplifier. Force MONO output SD signal input Initialize switch input terminal Initialize switch input terminal Initialize switch input terminal Rotary encoder input 1, 2 SEEK output Servo drive power FM select output AM select output Not used. Ground Not used (Connect to ground) A/D key input 2, 1 Rotary commander input FM and AM common signal meter A/D conversion input TEST mode select input AM center frequency input FM center frequency input Power supply (+5 V) Local oscillation frequency input (FM) Local oscillation frequency input (AM) Ground Not used. Error out output Connect to ground AM power output (AM select) FM power output (FM select) LOCAL/DX select ("H" : LOCAL, "L" : DX) BEEP output Accessory input SUBQ data read request System mute output Power amplifier mute output Telephone mute output Fixed at "H" in this set. Electric volume chip select Electric volume serial clock Electric volume serial data De-emphasis control output System power control Loading motor power Servo drive power Pin Description ­ 19 ­ Pin No. 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 Pin Name ILL-ON C.ALARM NC NC LCD-CE EZ-SEL SENS FOK LD-ON NC [IN] ST/MONO [OUT] MONO LCD-CKO LCD-So INH SQ-CKo CD-RST SQ-SI CD-SO CD-LAT CD-CKO VREF GND1 X-OUT X-IN BU-IN VDD1 RESET I/O O I I -- O I I I O -- I/O O O O O O I O O O -- -- -- I I -- I Pin Description Illumination output Caution alarm select input (Used/Not used) Not used (Connect to ground) Fixed at "H" in this set. LCD drive chip select output SHIFT + input Information input from servo IC. Focus OK input Laser diode control Not used. (Connect to ground) Used for both STEREO indicator display input and force MONO output. (FM) LCD driver serial clock output LCD driver serial data ou