Sony HCD-C990 Service Manual - Page 87
IC901, STR-F6238 US, Canadian, STR-F6267S AEP, Australian, IC903, SI-8050S-LF1101, IC904, M51945BL,
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Page 87 highlights
HCD-C770/C990 - POWER Board - IC901 STR-F6238 (US, Canadian), STR-F6267S (AEP, Australian) OVER CURRENT PROTECTOR INH1 FEED BACK LATCH DRIVE REGULATOR OVER VOLTAGE PROTECTOR START THERMAL SHUT DOWN INH2 DRIVE OSC OVER LOAD PROTECTOR REGULATOR CURRENT MIRROR 1 2 3 45 F.B VIN O.C.P GND D IC903 SI-8050S-LF1101 REGULATOR OVER CURRENT PROTECTOR OSC RESET + - COMPARATOR LATCH & DRIVER OVER HEAT PROTECTOR - + ERROR AMP VREF 1 2 3 45 SUPPLY VOLTAGE INPUT IC904 M51945BL - + 1.25V 12 34 5 GND NC OUTPUT VIN SW OUT GND VOS S.S VIN SW OUT GND VOS ON/OFF VIN SW OUT GND VOS ON/OFF IC906 SI-8033JF REGULATOR OVER CURRENT PROTECTOR ON/OFF SOFT START RESET OSC COMPARATOR + - LATCH & DRIVER OVER HEAT PROTECTOR + ERROR AMP - VREF 1 2 3 45 IC908 SI-8120JF REGULATOR OVER CURRENT PROTECTOR ON/OFF SOFT START RESET OSC COMPARATOR + - LATCH & DRIVER OVER HEAT PROTECTOR + ERROR AMP - VREF 1 2 3 45 87
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