Invacare 2G Tarsys Service Manual page 23

SYMPTOM
Error Code:
E28 - MPJ joystick
or
5 flashes - DPJ™ and
SPJ™-80 joysticks
Programmer does not
work or gives
"communication error".
Switch response
incorrect.
Drive lockout does not
engage.
Slow motor speeds.
Motor speed too fast.
Seating system functions
respond to switch
commands, but not to
driver control.
Seating system function
will only operate in one
direction.
Motor runs then loses
power, then runs again.
Part No 1114842
SECTION 4—SAFETY INSPECTION/TROUBLESHOOTING
PROBABLE CAUSE
System tilted or reclined
beyond drive lock-out
angle (20°).
Charger is plugged into
wheelchair.
Bad potentiometers or
out of calibration.
System tilted or reclined
beyond drive lock-out
angle (20°).
Programming error or
bad switch.
Programming error.
Bad potentiometers or
out of calibration.
Low battery voltage or
programming speed set
too low.
Programming error.
Programming error.
Incorrect/malfunctioning
driver control.
Bad potentiometers or
out of calibration.
Current Rollback.
Heavy load sensed by
seating system controller.
SOLUTIONS
Return to neutral position (upright). Refer to Operating
Powered Seating Systems on page 127.
Unplug charger.
Recalibrate potentiometers or replace. Refer to the MK
EX Electronics Service manual that is listed in Reference
Documents on page 2, Removing/Installing the Tilt
Potentiometer on page 150, or Removing/Installing the
Recline Potentiometer on page 155.
Return to neutral position (upright). Refer to Operating
Powered Seating Systems on page 127.
Use the programmer to verify controller programming.
Save the proper standard program to reset switch
functions.
Check drive lockout settings using the programmer.
Recalibrate potentiometers or replace. Refer to the MK
EX Electronics Service manual that is listed in Reference
Documents on page 2, Removing/Installing the Tilt
Potentiometer on page 150, or Removing/Installing the
Recline Potentiometer on page 155.
Recharge batteries.
Check seating system controller performance adjustment
settings for actuator speed and acceleration using
programmer.
Check seating system controller performance adjustment
settings for speed using programmer.
Check the performance adjustment menu for the base
and make sure that the tilt/recline adjustment is turned
on in all available drives.
Replace drive control.
Check for physical damage to potentiometers and wiring
and replace if necessary.
Recalibrate potentiometers.
Leave power on, and DO NOT activate seating functions
for at least 3 minutes. Call Invacare Technical Services.
Leave power on, and DO NOT activate seating functions
for at least 3 minutes. Call Invacare Technical Services.
23
2G Tarsys®Powered Seating System
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