C776i Stairclimber
Page 36
Procedure 7.5 - Replacing the Lower PCA
Follow anti-static handling procedures and wear an anti-static device (such as a wrist strap)
when you perform this procedure.
1. Remove the left hand and right hand cover sections per Procedure 1.
2. Remove all of the wiring connections from the lower printed circuit assembly. See Diagram
7.2.
3. Remove the four screws that fasten the lower printed circuit assembly to its mounting
bracket.
Diagram 7.2 - Lower Printed Circuit Assembly Mounting
4. Set the replacement lower printed circuit assembly in its mounting position and fasten it with
the four screws removed instep 3.
5. Connect the red lead from the battery to the BAtTERY + terminal. Connect the black lead
from the battery to BATTERY - terminal.
6. Connect the two red wires from the generator to the LOAD terminals. These wires may be
connected in any order.
Data Cable
Load Connections
Battery +
Battery -
3 Phase Gen In
TP21, 18.5 Vdc
TP22, Gnd
TP8, 5 Vdc
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