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NovaJet 500/630/700 Series Service Manual
MAINTENANCE
Maintenance 3-11
Figures 3-4 and 3-5 shows the locations of all the connectors on the
MPWA and carriage board respectively. To remove the ribbon cables
from their connectors, lift the connector’s ribbon locking mechanism as
shown in figure 3-6. To reattach, depress the locking mechanism back
into the locking position after inserting the ribbon cable end.
LOCKING
MECHANISM
CONNECTOR
ASSEMBLY
RIBBON
UNLOCKED
LOCKED
Figure 3-6. Ribbon Connector Locking Mechanism.
Replace Carriage Bushings
The carriage bushings are rated for approximately 1500 hours of
operational usage. Many factors including, but not limited to, hours/
day used, cleanliness of the slide shaft and general ambient environ-
ment make it impossible to calculate the average time that the carriage
bushings to last.
If not replaced, the wear on the bushings can result in erratic carriage
motion and/or carriage axis failures. It can even cause the cartridge
head height to become uneven.
To replace the carriage bushings, follow the procedures for Carriage
Bushing Replacement found in Chapter 5.