SX™
Service and Maintenance Manual 3-81
960714-02B © 2007 I2407
SECTION 3 – COMPONENT REPAIR
PRINTHEAD CRADLE ASSEMBLY
DC ROLLER CLUTCH
The DC roller clutch is pressed into a timing pulley
on the printer side of the main cradle plate. The
clutch cannot be seen without some disassembly of
the machine.
1. With the cradle cover open, spin the rewind
hub. Watch the roller clutch pulley located
between the two inner cradle plates. When
winding the ribbon onto the hub (counter-
clockwise), the DC clutch will spin freely on the
transfer shaft. When unwinding the ribbon
(clockwise), the DC roller clutch will turn the
transfer shaft. If either of these conditions is
not met, the clutch needs replacement.
The DC roller clutch is adjustment free.
1. Remove the outside cradle cover.
2. Loosen the clamp collar and the set screws on
the transfer shaft pulley.
TESTING
Always remove electrical power from the
SX
prior to performing any maintenance
on the machine.
WARNING
Timing Pulley with
DC Roller Clutch
Rewind Hub
Figure 3-201. Locating the DC Roller Clutch
ADJUSTMENT
REPLACEMENT
Outside Cradle
Screws
Figure 3-202. Removing the Outside Cradle Cover
Figure 3-203. Transfer Shaft Components
Transfer
Shaft Pulley
Clamp Collar