This is exactly the thing you need to service this box. The manual is complete and the quality of the scan is good. I recommend this!
Text excerpt from page 12 (click to view)
8. GENERAL DESCRIPTIONS 9. ADJUSTMENT PROCEDURES
9.1. DISASSEMBLE FLOW CHART
This flow chart indicates the disassembly steps the cabinet parts, C.B.A. and Mecha. Unit in order to access to be serviced. When reinstalling, perform the steps in the reverse order.