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To remove the solenoid assembly, the rear panel and the SBC Board described in
Section 4.1.8 must be removed first. Each solenoid has an electrical connection to
the lamp board which must be unplugged prior to removal of the solenoid. At this
point, remove the two screws on the front panel to remove the solenoid assembly.
4.1.6 Printer Assembly
The printer assembly is designed to allow for easy removal by the user which can be
accomplished without removal of the electrical power to the analyzer. Slide the
paper tray forward to allow access to the printer, tear the paper roll and completely
remove it together with the paper tray. Slide fingers under the printer assembly and
pull the printer forward. This will disengage the printer from the interconnector and
enable removal of the assembly from the front of the analyzer. Removal of the
printer should be performed for replacement and for removal of a paper jam.
To replace the printer, locate the printer slide and insert the printer assembly. Press
firmly into place to ensure electrical connection of the printer.
Note: Never attempt to dislodge paper from the printer with a paper clip or
similar object to avoid damage to the print head or printer platen.
4.1.7 Rear Panel Assembly
To remove the rear panel assembly, ensure that the power cord has been discon-
nected. Remove the four corner screws to expose the rear panel. The power
supply module located on the rear panel assembly can now be removed by remov-
ing the three screws securing the circuit board and by disconnecting the wiring
interconnections. The main power receptacle can also be replaced by removing the
two screws holding this assembly.
4.1.8 SBC Board
After the rear panel (Section 4.1.7) has been removed, the SBC Board is acces-
sible for removal. This circuit board can be removed by removing the seven
screws securing the board to the housing and by disconnecting electrical connectors
from the power supply module, display board and lamp board.
The electrode push pins can now be replaced by simply pulling the connecting pin
from its socket. When installing the board, make sure to place the plastic washers
under the screw heads.