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This is the 2nd time I download manuals from this website and I can say it's what I was expecting. It contains schematic, layout (decent quality), short description, parts and dissasembly instructions. I recomend it for anyone who wants to repair/modify this device.
Text excerpt from page 39 (click to view)
SA-HT740P / SA-HT740PC
Step 2 Remove Drive Gear (A) and Drive Gear (B).
Step 3 Release the 2 claws in the direction of arrow (1), and then push the pulley pin in the direction of arrow (2).
10.18.2. Disassembly of the Loading Motor P.C.B.
Step 1 Remove 2 screws.
10.18.4. Disassembly of Fixed Plate, Magnet and Clamper
Release 3 claws in the direction of arrow.
Step 2 Remove Loading Motor P.C.B.
10.18.3. Disassembly of the Drive Gear (A) & (B)
Step 1 Release the claw in the direction of arrow (1), and then push drive gear shaft up.
10.18.5. Disassembly of Cam Gear & Support Piece
Step 1 Rotate (A) in cam gear anti-clockwise.