Sony (Bulletin) HCD-C33/C55 free download

File name HFP0460_©_.PDF

Hi-Fi Products CSA-13 Service Bulletin Sony Service Company - Technical Services A Division of Sony Electronics Inc. Sony Drive, Park Ridge, New Jersey 07656 Model: HCD-C33/C55 Subject: Initialization Information Symptom: (**) No. 460 Date: November 27, 1995 Sequence of events during Initialization Reference: Tokyo fax Autoflagged - NO PRINTED ON RECYCLED PAPER PRINTED IN USA Hi-Fi Products Service Bulletin No. 460 Tray Open/Stock-In Function Begin - Open/Stock-In Wait for completion of Open (CF1*)/Stock-In(CF2*)cycle. 100 msec. Brake 150 msec PWM push 100 msec Brake (again) Confirm - Open/Stock In Completion If Open/Stock-In Completion End If no Open/Stock Completion Push with PWM *Cf1= Open Completion (Out-SW is On or closed, and In-SW is OFF or open) *Cf2= Stock-In Completion (Stock-In-SW is ON or closed) Hi-Fi Products Service Bulletin No. 460 Tray Closed/Stock -Out Function Begin Close/Stock-Out Wait for close (Cf3*)/Stock-Out (Cf4*)completion 40 msec reverse Turning After 100 msec braking, confirm Close/stock-out Completion If Close/Stock-out Completion If not Close/Stock-Out Completion Begin Close/Stock-Out (again) Wait for Close/Stock-out Completion After 100 msec braking, confirm Close/Stock-out If confirmed If not confirmed Positioning of tray in Mid position by PWM End, with elevator at Mid position *Cf3= Open Completion (Out-SW is OFF or opened, and In-SW is ON or closed) *Cf4= Stock-Out Completion (Mid-Sense, photo sensor, is On or Mid-Sw is OFF) Hi-Fi Products Service Bulletin No. 460 Positioning of Tray in a Mid Position Confirm Mid Position* If not at Mid Position If yes, End Judge direction by Mid-Sw ON/OFF, Move tray by PWM When in Mid Position, apply braking for 100 msec * Mid Position = (Mid-Sense, photo sensor, is ON). Hi-Fi Products Service Bulletin No. 460 Elevator Up & Down Movement When Count SW is OFF, "Mechanism Initialization" will scroll across display When Count SW is ON Compare the Current disc and Target disc If Discs are different Move UP or DOWN Toward the target Disc Wait for Count SW OFF If Count SW OFF within 5 sec. Wait for Count SW ON If same End If not OFF in 5 sec., 1st time, it will try a second time by mechanically reversing until the Count SW is OFF. If not, then Mechanical Error" is displayed. If not ON in 5 sec., 1st time, it will try a second time by reversing until Count SW is ON. If not, then "Mechanical Error" is displayed If Count SW is ON in 5 sec Current Disc = Target Disc is not If Current disc is not Target Disc, and Reverse is necessary. 100 msec braking If Current Disc Target Disc, and Forward is necessary. 100 msec braking If Count SW = H, "Mechanical Initialization" is displayed If Count SW = L, End. Hi-Fi Products Service Bulletin No. 460 Main Protection Functions 1.) When Opening the Tray If Count -SW is OFF, it triggers Mech Initialization. If it does not finish opening the tray in 6 sec, it will r