Control System55Service Manual
SC6500™I/O Table with Shop MeasurementsA2 Control Board AssemblyDesignation Pin ID Wire ID/Color Description SignalCharacteristicsNominalValue (whenactivated)ReferenceTo:AcceptableRange Measured CommentsOutput J1-1 BLU/GRA DetergentPump2 (+) Pulsed Voltage 0 or 36V B- (ground) see commentbelow * 18-23VComplex pulsed PWM signalMeasured in service testmode.Bidirectional J1-2 BRN/BLU CAN-L DigitalCommunication see comment see comment 2.37V Protocol analyzer needed toverify connectionBidirectional J1-3 GRN/BLU CAN-H DigitalCommunication see comment see comment 2.64V Protocol analyzer needed toverify connectionInput J1-4 ORN/RED Speed Control- Fault Voltage see comment B- (ground) see commentPulsed signal equal to thefault code flashed by thespeed controllers built-instatus LEDInput J1-5 GRN Battery + Voltage +36V B- (ground) 31V - 38V 36.7VDownstream of circuitbreaker F1, Key switch S1,Diode D1, Seat Switch S2and Battery Interlock SwitchS3Output J1-6 TAN/BRN DetergentPump1 (-) Pulsed Voltage 0 or 36V B- (ground) see commentbelow * 11-17VLine should alternatebetween 0V and 36V whendetergent pump is activated.Measured in service testmode.Output J1-7 BLK/GRA DetergentPump1 (+) Pulsed Voltage 0 or 36V B- (ground) see commentbelow * 18-23VLine should alternatebetween 0V and 36V whendetergent pump is activatedInput J1-8 ORN Battery + Voltage +36V B- (ground) 31V - 38V 37.46VDownstream of circuitbreaker F1, switched throughkey switch S1Output J1-9 ORN/GRA DetergentPump2 (-) Pulsed Voltage 0 or 36V B- (ground) see commentbelow * 11-17VLine should alternatebetween 0V and 36V whendetergent pump is activated.Measured in service testmodeInput J1-10 BLK Battery - Voltage 0V B- (ground) 0 - 1V 0.04V Vacuum motor runningInput J1-11 RED/WHT Speed Control -Motion Voltage0V (moving),36V (notmoving)B- (ground)0 - 1V(moving),31 - 38V (notmoving)24.8V N0.006V FWD or REV
