Sony MZ-R900 Service Manual - Page 29

6-3. BLOCK DIAGRAM - KEY CONTROL/DISPLAY/POWER SUPPLY Section - (Page 28) F RMC KEY (Page 27) D CLK RMC KEY 20 FS4 86 CLK SEL 169 FFCLR 236 SLEEP 235 VLON 234 WK DET 17 REC KEY 18 HALF LOCK SW 19 SYSTEM CONTROLLER IC801 (3/3) S805 OPEN VRFF (Page 27) E VL MON 15 (Page 28) G SDO0, SDI0, SCK0 LCD REC LCD DRIVER & REAL TIME CLOCK SD0 SI0 SCK RST STB CS CS RTC XWK1 REC SDO0 SDI0 SCK0 187 LCD RST AUX 206 LCD STB 205 XCS LCD 216 CS RTC X PAUSE REC LED REC SE1 KEY 1 SE1 KEY 2 x , T MARK , REC MODE , END SEATCH , + - VOL - - , (JOG LEVER L/R) BACKUP DVDD UNREG SWITCH & LCD MUDULE UNIT RESET SWITCH Q801 VIF B+ VB B+ 1 PAUSE KEY 208 REC LED 13 SET KEY1 14 SET KEY2 VL PWM 164 VC PWM 165 XRST 8 S801 HOLD OFF HOLD + S802 SYNCHRO REC ON OFF VIF B+ VB B+ S806 OPEN/CLOSE DETECT S804 BATTERY IN DETECT S803 PROTECT DETECT 227 XHOLD SW 228 SYNC REC VREC PWM 163 170 OPEN CLOSE SW AUXI 48 182 XGUM ON 230 PROTECT CHG MON 11 CHG GAIN 237 CHG 238 VIF B+ SL801 (TEST) 3 XTEST HIDC MON 16 GND SW 171 VB MON 10 VB B+ VSTB SYSTEM CONTROLLER (IC801) B+ VL LASER APC CIRCUIT B+ VD SYSTEM CONTROLLER (IC801) B+ VIF A/D, D/A CONVERTER (IC301), SYSTEM CONTROLLER (IC801), EEPROM (IC804) B+ VA A/D, D/A CONVERTER (IC301), SYSTEM CONTROLLRE (IC801) B+ VC MIC AMP (IC303), RF AMP (IC501), MOTOR/COIL DRIVER (IC551), REMOTE CONTROL CIRCUIT B+ NOISE FILTER NOISE FILTER L801 L904 7 VRMC 4 XWK3 56 CLK 52 CLK SEL 54 FFCLR 55 SLEEP 1 VLON 2 XWK1 3 XWK2 5 XWK4 53 VAIFON 6 VSTB VLO 10 SYSTEM CONTROL VB VC VREF 49 24 DTC2 25 DTC1 39 VDFB 44 VD BANDGAP REFERENCE RF2 STEP-UP PRE DRIVER & PWM POWER CONTROL IC901 REGURATOR SWITCHING REGURATOR STEP-UP DC/DC CONVERTER VL 9 VL 10 L2 L2 12 16 VG 19 LG 18 38 VIFFB VIF 42 SERIES PASS REGULATOR VC2 45 40 VAFB VA 41 D904 VCO 35 22 INM2 RF2 23 26 INM1 27 RF1 XRST 46 47 CRST RESET SIGNAL GENERATOR DTC1 REGULATOR SWITCH VC 36 VC 34 STEP-UP PRE DRIVER & PWM VOUT 33 SWITCHING REGULATOR L1 32 L1 28 VB 50 VRECO OVER WRITE HEAD DRIVE CIRCUIT B+ L602 L603 NOISE FILTER 10 VRECO1 15 VRECO2 SWITCHING REGULATOR L1 1 11 L1 2 14 16 VREC INM1 19 RF1 20 SWITCH -+ STEP-UP DOWN DW BT PRE DRIVER & 22 DW TP 21 PWM VIO 8 VC2 26 VC 9 POWER CONTROL IC601 (2/2) CHGMON 51 BATTERY CHARGER & REGULATOR RF2 49 INM2 48 INP2 47 RS 46 CHARGE CONTROL CHG SW 45 CHARGE MONITOR VB 43 BATM 44 VB HEADPHONE AMP (IC302), MOTOR/COIL DRIVER (IC551) B+ D902 L902 VG MOTOR/COIL DRIVER (IC551) B+ D903 L905 L903 D901 L901 L601 B+ SWITCH Q603 VIF B+ VC B+ CHARGE CONTROL Q602 (2/2) CHARGE D603 CHARGE CONTROL Q602 (1/2) DRY BATTERY SIZE "AA" IEC DESIGNATION R6 1PC. 1.5V (BATTERY CASE) RECHARGEABLE BATTERY (NICKEL-METAL) NH-14WM 1.2V 1400mAh GAIN 54 55 CHG SYSTEM CONTROL (2/2) DREG 56 VIF B+ DCIN 50 D605 LINE FILTER T601 THP601 GROUND LINE SWITCHING Q601 J601 DC IN 3V - + 29 29 29