TM 11-6625-3081-23
2-43. PROGRAMMABLE DIGITIZER ASSEMBLY 2A2A1 REPLACEMENT (cont)
2-43
9. Loosen six screws (19) and remove
cover (20).
10. Remove two screws (21) and plate
(22).
CAUTION
This equipment contains parts and
assemblies sensitive to damage by
electrostatic discharge (ESD). Use
ESD precautionary procedures when
touching, removing, or inserting
circuit card assemblies
11. Comply with ESD procedures for CCAs
(para 2-21).
12. Lift circuit card assembly (23) far
enough to access address selector
switches (25) by pulling tabs (24).
13. Locate two address selector switches
(25).
Set switches as follows:
Switch Position
1
closed
2
closed
3
closed
4
closed
5
OPEN
14. Install circuit card assembly (23).
15. Install plate (22) with two
screws (21).
16. Install cover (20) and tighten six
screws (19).
17. Install programmable digitizer assem-
bly in reverse order of removal.
Connect cables as listed below:
W21P3
W1OP1
W22P4
W27P2
P4
W28P2
W17P3
W20P4
W22P2
W21P1
W27P1
to
to
to
to
to
to
to
to
to
to
to
EXTERNAL CLOCK IN
EXTERNAL CLOCK OUT
RT. TRIGGER IN
4
IEEE 488 BUSS
3
J1
J2
J3
J4
Y
W28P1
to x
115 vac to cord
END OF TASK
2-259
