Head Pressure Block Assembly - Printronix SLPA7000 User Manual

Chapter 6
Removal And Replacement Procedures

Head Pressure Block Assembly

Removal
1. Prepare the printer for maintenance (page 223).
2. Remove the printhead assembly (page 250).
3. Rotate the lead screw knob until the outboard head pressure block is
exactly one inch from the inboard head pressure block. (Figure 49,
page 276, item 5.)
4. Remove the retaining E-ring and the lead screw knob. (Figure 49,
page 276, items 2 and 5.)
IMPORTANT
Do not rotate the lead screw after you remove the lead screw knob. You
must install the head pressure blocks exactly where they were on the
shaft when you removed them.
5. Rotate the head pressure adjustment dial counterclockwise until MIN
aligns with the head pressure dial indicator. (Figure 49, page 276, items 3
and 4.)
6. From under the pivoting deck, remove the inside retaining E-ring securing
the head pressure shaft to the pivoting deck. (Figure 49, page 276, items
2 and 8.)
7. Remove the pressure block handle from the inboard head pressure block.
(Figure 49, page 276, item 19.)
8. Remove the pressure block pointer from the outboard head pressure
block. (Figure 49, page 276, item 6.)
9. Slowly pull the head pressure shaft out of the pivoting deck and catch the
inboard and outboard head pressure blocks as the shaft moves outward.
Pull the head pressure shaft out until both blocks are released; you do not
need to completely remove the shaft. (Figure 49, page 276, items 8 and
26.)
10. Remove the gimbal pivot rack from the outboard head pressure block.
(Figure 49, page 276, items 18 and 20.)
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