The schematic yields a BOM

With the schematic finally on the bench, the obvious next move was to read it properly: every resistor, capacitor, inductor, semiconductor, and transformer on the two sheets, transcribed at full zoom into a component BOM — about ninety-five rows across five tables, each row paired with its listing in the chapter IX replacement-parts table and Akai's own stock number.

The cross-referencing is where it got interesting, because the factory left three witnesses, not two: the schematic's printed values, the parts table's nomenclature, and — easy to forget — the chapter X board layouts, whose CD-512 and CD-511 silkscreens print designators and values right on the copper. Reading all three against each other settled two disagreements that either source alone would have left standing, both off by exactly a decade:

• C210 — the schematic and the CD-512 board both print .022; chapter IX's 0.22 µ is the odd one out.
• R112 — chapter IX and the CD-511 board both print 2.7K; this time the schematic's 27K is the outlier.

One disagreement survives all the checking: R1, chassis-mounted with no board silk to break the tie, prints 680 on the schematic and 680KΩ in chapter IX. It stays flagged in the table, unresolved — the archive has no fourth witness.

The join filled gaps in both directions, too. The schematic supplies designators chapter IX never printed (the oscillator card's R402–R404, the 5-watt R7, the VR161 preset), and chapter IX supplies what the schematic doesn't say (D101 is a 1N34A, the rectifiers are SW-05-01s, T201 is a 7KΩ:8Ω headphone transformer). Parts in neither list — C112, the L101 and L102 chokes, the motor capacitors — are marked for what they are: schematic-only, with the board corroborating where it can.