Avery Berkel CX20 SERIES, Service Manual

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19 — Receipt Printer
19–7 CX20/CX30/CX34 Service Manual
6 Remove print head by removing retaining rod (press out).
7 Assemble in reverse order, applying two spots of locking paint between
retaining rod and printer case.
8 When installed in unit, print quality must be checked.
19.3.7 Changing the microswitch
To change the microswitch, proceed as follows:
1 Detach microswitch by removing Posidrive screw securing it to printer
case.
2 If installed in unit, microswitch can be changed only by desoldering wire
connections and transferring existing wires to new microswitch. If this
option is preferred, check that green wire attaches to centre terminal of
microswitch, and that black wire attaches to rear terminal.
3 Fit microswitch using Posidrive screw and, before tightening screw,
adjust so that microswitch tongue just contacts edge of hole in printer
case.
19.3.8 Disassembling the printer
To disassemble printer, proceed as follows:
1 Remove print head (refer to Section 19.3.6).
2 Remove microswitch (refer to Section 19.3.7).
3 Gaining access through holes in opposite side of printer case, remove
drive motor by removing two Posidrive screws attaching drive motor to
inside face of printer case.
19.3.9 Assembling the printer
To assemble printer, proceed as follows:
1 Fit drive motor using two Posidrive screws (this is easier if a magnetized
or screw–gripper screwdriver is used).
2 Fit and adjust microswitch (refer to Section 19.3.7).
3 Fit print head (refer to Section 19.3.6).