Canon AS-100M Field Service Manual page 66

4.3.2. Optional interface
The installation location varies with each option interface as
shown in Fig. 1.1.1.
(1) Serial data interface
For serial data interface, two types are available, one
to be connected to 1/0—MOTHER—E P.C.B., and the other to
CPU+I/0-C0NT P.C.B.
i) RS232C
However, be careful because the 25P mounting plate of
RS232C P.C.B. is different according to the location.
(The rear side of each 25P mounting plate has an A mark.)
No. 2 and 3 marked
on rear panel
No. 4 marked on
rear panel
( D Remove both rear and upper covers.
of Chapter 3.
(5) Pull out power supply unit half its depth (paragraph
5.2.2), and remove power supply unit reingorcement
mount with four retaining screws as in Fig. 4.3.3.
P.C.B.
Make sure whether or not 25P mount­
ing plate A (alphanumeric mark:
EA4-0079) is fitted to RS232C P.C.B.
Exchange 25P mounting plate A to B
4-22
See paragraph 3.1