Sony sa ve 225 service manual
This is the 12 pages manual for sony sa ve 225 service manual.
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Extracted text from sony sa ve 225 service manual (Ocr-read)
Page 1
2 SA-VE225/WMS225/SS-CN225/V225 SECTION 1 DIAGRAMS 1-1. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS Note on Printed Wiring Boards: -X: parts extracted from the component side. - : Pattern from the side which enables seeing.Note on Schematic Diagram: -All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics and tantalums. -All resistors are in Ω and 1/4 W or less unless otherwise specified. -2: nonflammable resistor. -5: fusible resistor. -C: panel designation. -A: B+ Line. -B: B– Line. -Voltages are dc with respect to ground under no-signal conditions. -Voltages are taken with a VOM (Input impedance 10 MΩ). Voltage variations may be noted due to normal produc- tion tolerances. -Signal path. F: AUDIO Note:The components identified by mark 0 or dotted line with mark 0 are critical for safety. Replace only with part number specified.
Page 2
SA-VE225/WMS225/SS-CN225/V225 3 3 THERMAL SHUTDOWN BIPOLAR TRANSCONDACTANCE INPUT STAGE STANDBY/ MUTE BOOST- STRAP MOS GAIN & LEVEL SHIFTING STAGE STBY-GND IN– IN+ IN+ MUTE NC BOOSTSTRAP +VS –VS STBY MUTE NC NC +PWVS OUT –PWVS 1415 12 13 10 11 89 6 7 5 3 4 12 + – MOS OUTPUT STAGESHORT CIRCUIT PROTECTION 1 2 3 4 5 6 7 8 OVER LOAD DET F/F OFFSET DET LATCH/ AUTORESETV CC ON MUTE AC OFF DET OVER LOAD DET OFFSET DET AUTO RESET AC OFF DET GND RELAY DRIVE VCC ON MUTE VCC - IC Block Diagrams – MAIN Board – IC302µPC1237HA -Circuit Boards Location SA-WMS225 POWER IC board POWER SW board LED board CONTROL boardMAIN board – POWER IC Board – IC401 TDA7294