Restoration Log
Dated working notes from the bench, newest first.
2026-08-20
The operator's manual arrives, twice
Two scans of the X-150D operator's manual land on the same day — each carrying a page the other lacks.
2026-08-20
Calibrating at half speed: the level tape
An MRL multifrequency calibration tape cut at 15 in/s meets a deck that plays 7-1/2 — and the arithmetic says the 0 VU calibration survives the speed change intact.
2026-08-20
The schematic yields a BOM
Every component on the two schematic sheets, read at full zoom and cross-referenced against two more factory sources — with two decade-sized surprises.
2026-08-19
The service manual, a mirror
The X-150D service manual arrives — as a mirror of a scan that has been circulating for years.
2026-08-19
The machine on the bench
An Akai X-150D arrives, and a site starts with it.