Sharp CDC2900 Service Manual - Page 21

CD-C622/C2900 C22 220P C57 0.001 R57 1K R58 1K R59 1K R61 1K R62 1K R63 1K +B R51 3.3M C39 R50 0.047 680 C40 0.047 R52 27K R53 1.2K 11 CD SIGNAL R60 1K C46 100P (CH) C44 100P(CH) C45 100P(CH) C47 100P(CH) C48 100P C49 100P(CH) C38 0.01 +B 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 TEST1 /CS TEST5 4M 16M NC TEST11 NC /RES /CQCK COIN SQOUT RWC WRQ FSX NC SBCK SFSY NC PW NC 1 DEF1 2 TA1 3 PDO µ-COM INTERFACE 2KX8 RAM SUB-CODE X-TAL GENERATOR EFLG NC 48 SBSY NC 47 XVSS 46 XIN 45 XOUT 44 C41 12P XL1 16.934 MHz C42 15P R93 220 CNP11 C83 0.022 D81 1SS133 D82 1SS133 VCO CLOCK OSC CONTROL 1BIT @DAC 4 VVSS 5 ISET 6 VVDD 7 FR 8 VSS 9 EFMO SLICE 10 EFMIN LEVEL CONTROL 11 TEST2 12 CLV+ 13 CLV_ 14 V/P CLV DIGITAL SERVO 15 HLF SERVO 16 TES COMMAND ERROR COERECT FLAG CONTROL SYNC-DETECT EFM DEMODULATE IC2 LC78622NE SERVO/SIGNAL CONTROL EXTERNAL OUTPUT 4FS DIGITAL FILTER XVDD 43 MUTER NC 42 RVDD 41 RCHO 40 RVSS 39 LVSS 38 LCHO 37 LVDD 36 MUTEL NC 35 34 TEST4 33 DIGITAL OUT C72 10/50 R72 2.7K R74 100K R71 2.7K C71 10/50 R73 100K R55 C43 100 +B 330/6.3 R65 1K L61 +B 0.82µH C51 C50 0.022 +5V C74 220P C73 220P CD_RCH A_GND CD_LCH Q52 KTC3203 Y R66 R64 220 22 ZD61 MTZJ5.6B C75 0.001 R-CH 1 A_GND 2 L-CH 3 D-GND 4 +7V 5 +12V 6 +B C52 100/16 100/16 TOFF TGL JP+ JP_ PCK NC FSEQ NC VDD CONT1 CONT2 CONT3 CONT4 CONT5 NC EMPH NC C2F NC DOUT TEST3 NC 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 +B +B R88 1.2K R89 1.2K R90 220 R91 1K +B C56 0.022 +B +B BI1B +B R54 330 2 1 +B CNP99 BI1A +B 2 1 3 2 1 33 D92 1SS133 R83 390 R82 R80 390 820 R81 820 2 3 D93 1SS133 1 Q51 KRC102 M R84 2.2K C37 0.022 10K PUIN SW SLD- D_GND SLD+ DRF(ASP) RES(DSP) CQ CK(DSP) R47 SQ OUT(DSP) CO IN(DSP) PCCL OP/CLOS DISC NO. UP/DOWN 3 4 5 6 7 8 9 10 11 12 13 14 15 +B +B CD SERVO PWB-B SOLM2 SOLENOID D91 1SS133 LOCK BIM05 1 SOL+ 1 M- M+ 2 SOL- 2 3 M- 3 4 M+ 4 5 GND(D) 5 CD_D_NO 6 7 DISC NO. OPEN CLOSE 6 7 8 GND(D) 8 9 MECHA UP 9 10 GND(D) 10 1 2 3 4 5 -M + M3 T/T UP/DOWN LOADING SW1 6 OPEN CLOSE SENSOR PWB-D SW2 MECHA UP CNP10 CNS10 DISC NO 1 1 SW3 2 2 DISC NUMBER CNS5 P24 1 - B CNS11 TO MAIN PWB P25 10 - B CNS99 TO DIGITAL OUTPUT PWB CNS12 P29 12 - B TO DISPLAY PWB • The numbers 1 to 12 are waveform numbers shown in page 16. 7 8 9 10 11 12 Figure 21 SCHEMATIC DIAGRAM (2/10) - 21 -