Sidekick SK-8RG, Owner'S Manual

Page: 17 / 20

17
OPENING the UNIT. Qualified Personnel only
The unit must be opened in order to reach the internal components.
1) Remove the power cord from the unit and pull at least one battery from the battery
holder. Remove all the solution tubing from the tubes on the back of the unit.
2) Unscrew the 4 screws holding the BODY to the base (2 on the right side and 2 on
the left side). Lift up on the right side of the BODY so that it hinges on the left side.
Rest the BODY on its left side.
PROGRAM MODULE REPLACEMENT
Open the unit see OPENING. Locate the circuit board. The PROGRAM MODULE has a
tape handle on it. Pull straight up with the tape handle - not one side at a time. The
writing on the label should read from top to bottom. Illuminate the circuit board well to
make sure the pins are lined up. Push in the new PROGRAM MODULE. Close up the unit.
SELECTOR VALVE REPLACEMENT
Open the unit (see OPENING). Cover the PC Board with paper towels and a plastic sheet
to protect it from getting wet. The SELECTOR VALVE (SV) is now exposed. The tubing
from the SV is held against the side of the case by a clamp. Open the clamp. With a
paper towel in hand, remove the SV tubing from the pump fitting.
Remove the ribbon connector of the SV from the PC board. Carefully lift the connector
straight up. Do not bend the pins. The SV is held with 4 screws. Unscrew and remove
SV.
Install the new SV. Fasten with the 4 screws. Clamp the tubing to the case. The black
mark on the tubing should line up with the bottom of the clamp block. Push the end of
the tubing onto the pump.
Remove the protective socket from the connector of the new SV and place it on the old
SV connector. Replace the electrical connector in the socket marked FLUTE on the PC
board. The mark on the connector should be on the lower left corner.
Close up the unit. Do a test processing run.
PRINTED CIRCUIT (PC) BOARD REPLACEMENT
Open the unit (see OPENING). Locate the circuit board. Carefully note how each
connector is mounted before you pull it from the board. Pull away squarely from the
board, be careful not to bend the pins. Do not just yank the ribbon cables. Rotate the 2
clamps holding the PC board and remove it.
Push the new PC against the stop on the right side of the track and then twist the
clamps.. Carefully replace all the connectors. Use the wiring diagram (p.16) as a guide for
positioning. Close the unit and do TEMP CALIBRATE (see SPECIAL FUNCTIONS).