Centronics 101A User's & Technical Manual page 111

PRINT HEAD AND ASSOCIATED ASSEMBLIES
2. Remove ribbon cables (8-12, 8-13) from cable clamp assembly
(B-14) located on the tray (B-15) by loosening the back
screw, (8-16) and removing the front screw, (8-16), washer
(B-5) and nut (B-17).
3. To remove entire heatsink bracket (8-18) with power driver
board (B-19), remove four countersink screws (8-20) at front
of printer attached to printer frame unit (B-21).
4. Reverse disassembly procedures to assemble.
C. Video Amplifier and Cable
1. For removal of video amplifier board (B-22) and cable ass'y
(B-12, B-13), first refer to paragraph 5.2.13.2.B., steps
1 and 2 of this section.
2. Remove connector screw (B-23) from bracket (B-26), clip
(B-46) and the fibre washer (B-24) located directly under-
neath the video amplifier board.
3. Remove two screws (8-25) from bracket (B-26) holding cables
and video amplifier board including fibre washers {B-27}
(placed as insulators) and pad assembiy (8-28).
D.
Installation-Video Amplifier and Cable
Install -the video amplifier (B-22) and cable assembly (8-12,
B-13) in the following manner:
1. Insert one screw (B-25) into ground terminal lug (8-45)
(attached to board) and then into fibre washer {B-27} and
enter pre-drilled hole in cabl-es (8-12, B-13).
2. Insert one more screw {B-25} with fibre washer (B-27) and
enter the other pre-drilled hole in cables. Add one
fibre washer (B-17) to each screw between the underside
of the cables and the pad assembly into sponge (B-29) and
bracket below (8-26) into front two press-fitted rivnuts
(B-30) on the bracket.
3. Insert solenoid fingerboard (B-1) from printer head into
video amplifier connector (B-2).
4. Reverse procedures of 5.2.13.2.B., 1 and 2.
E.
Bracket Video Amplifier
1. Remove entire bracket (8-26) with
non~conductive
sponge (8-29)
containing fibre optics head (B-31) and bundle (B-31) and
lamp housing assembly (8-32) and two lockwashers (B-34) from
printer carriage unit (B-7).
5-43