Mecmesin Multitest 0.5d - What are the SPI and the RS232 looms?

Multitest 0.5d, 1d & 2.5d
Service and Repair Manual
Number 022-005
Issue Number: 08
Page 48 of 58
27. What are the SPI and the RS232 looms?
On the right a photo of the SPI loom (352-189) from
the build instructions.
The photos below were taken on our test jig to simplify the photos.
The SPI loom is the 5 way cable
connecting the Front Panel PCB to the
Motor PCB,
(between J16 on Motor PCB and J7 on
LCD PCB).
SPI connection on the Motor Control
PCB.