Decode Board Installation - Metrologic MS6520 Service Manual

4.2.2 Decode Board Installation

4.2.2.1 Attach ground wire to connection point on
Signal Processor Board. (Refer to figure 4.2-2
shown in Decode Board Removal)
4.2.2.1.1 MS6520 models, from Rev. A up to and
including Rev. C with serial number
ending in 0130, the ground wire is pulled
off the ground lug
4.2.2.1.2 MS6520 models Rev. C with serial
numbers ending in 0131 and beyond, to
all current revisions require that the
Signal Processor board screw be removed
to remove the ground wire.
4.2.2.2 Align the plastic standoffs attached to the
decode board (Figure 4.2-3) and attach into
optics bench holes until board is securely
attached.
4.2.2.3 Connect motor cable, LED / beeper wire, and
ribbon cable into correct connectors. (Figure
4.2-2)
4.2.2.4 Perform steps 4.1.2 for inserting Optics Bench
into case assembly followed by closing and
sealing case shut.
FIGURE 4.2-3 DECODE BOARD
WITH STANDOFFS SHOWN
4-4
Ground Wire