Invacare NX User manual

Service Manual
DEALER: Keep this manual. The
procedures in this manual MUST be
performed by a qualified technician.
For more information regarding
Invacare products, parts, and services,
please visit www.invacare.com
MK5
™NX™Electronics
NX
NX-B
NX-LP
NX-75
NX w/ACC

USEFUL TERMS
MK5
™NX™Electronics 2Part No 1110532
 WARNING
A QUALIFIED TECHNICIAN MUST PERFORM THE INITIAL SET UP
OF THIS WHEELCHAIR. ALSO, A QUALIFIED TECHNICIAN MUST
PERFORM ALL PROCEDURES IN THE SERVICE MANUAL.
WHEELCHAIR USERS: DO NOT SERVICE OR OPERATE THIS
EQUIPMENT WITHOUT FIRST READING AND UNDERSTANDING
(1) THE OWNER’S OPERATOR AND MAINTENANCE MANUAL
AND (2) THE SEATING SYSTEM MANUAL (IF APPLICABLE). IF
YOU ARE UNABLE TO UNDERSTAND THE WARNINGS,
CAUTIONS, AND INSTRUCTIONS, CONTACT INVACARE
TECHNICAL SUPPORT BEFORE ATTEMPTING TO SERVICE OR
OPERATE THIS EQUIPMENT OTHERWISE INJURY OR DAMAGE
MAY RESULT.
DEALERS AND QUALIFIED TECHNICIANS: DO NOT SERVICE OR
OPERATE THIS EQUIPMENT WITHOUT FIRST READING AND
UNDERSTANDING (1) THE OWNER’S OPERATOR AND
MAINTENANCE MANUAL, (2) THE SERVICE MANUAL (IF
APPLICABLE) AND (3) THE SEATING SYSTEM MANUAL (IF
APPLICABLE). IF YOU ARE UNABLE TO UNDERSTAND THE
WARNINGS, CAUTIONS AND INSTRUCTIONS, CONTACT
INVACARE TECHNICAL SUPPORT BEFORE ATTEMPTING TO
SERVICE OR OPERATE THIS EQUIPMENT OTHERWISE, INJURY
OR DAMAGE MAY RESULT.
USEFUL TERMS
The following acronyms are used throughout this manual:
ACRONYM DEFINITION
SPJ Single Purpose Joystick
CSPJ Composite Single Purpose Joystick
ACC Accessory
NX Non-Expandable
NX-LP Non-Expandable Limited Programming
NX-B Non-Expandable ith Alternate Standard Program
NX-75 Non-Expandable ith 75 Amps
RWD Rear Wheel Drive
CWD Center Wheel Drive
DCI Drive Control Input
NOTE: Updated versions of this manual are available on www.invacare.com.

TABLE OF CONTENTS
Part No 1110532 3MK5
™NX™Electronics
TABLE OF CONTENTS
USEFUL TERMS ................................................................................. 2
SPECIAL NOTES ................................................................................ 5
SECTION 1—GENERAL GUIDELINES ................................................... 6
Controller Settings/Repair or Service 6
Operation Information 6
SECTION 2—EMI INFORMATION ....................................................... 7
SECTION 3—TROUBLESHOOTING ...................................................... 9
All Power Wheelchairs 9
Wheelchairs With Elevate Systems 10
SECTION 4—JOYSTIC DESCRIPTIONS ............................................. 11
SPJ™and CSPJ™Joystick Switches and Indicators 11
On/Off Switch 11
SPJ Joysticks 11
CSPJ Joysticks 11
Speed Control Knob 12
Joystick 12
Charger/Programming Input 12
Information Gauge Display 12
SPJ+ and SPJ+ w/ACC Joystick Switches and Indicators 15
On/Off Button 16
Speedometer 16
Speed Control Buttons 16
Mode Button 16
Joystick 17
Charger/Programming Input 17
Service Indicator 17
Information Gauge Display 17
SECTION 5—REMOTE PROGRAMMER .............................................. 19
Overview 19
Remote Programmer Terminology 20
Function 20
Value 20
Program (Preset Programs with Standard Value Settings) 20
Temporary Memory 20
User Memory Values 20
Description Of Remote Programmer Keys 21

TABLE OF CONTENTS
MK5
™NX™Electronics 4Part No 1110532
TABLE OF CONTENTS
SECTION 6—PERFORMANCE ADJUSTMENTS .................................... 22
Main Menu 22
Performance Adjust Menu 22
MK5 NX, MK5 NX-75, MK5 NX w/ACC and MK5 NX-B 22
MK5 NX-LP 23
Making Performance Adjustments 23
MK5 NX, MK5 NX-75, MK5 NX w/ACC, and MK5 NX-B Controller 25
Flowchart 25
Performance Menu Description 26
MK5 NX-LP Controller 27
Flowchart 27
Performance Menu Description 28
SECTION 7—PROGRAMS ................................................................. 29
Program Settings 29
SECTION 8—OTHER FUNCTIONS ..................................................... 32
Description of Other Functions 32
SECTION 9—DIAGNOSTIC CODES .................................................... 33
What Are Diagnostics Codes? 33
SECTION 10—CONNECTOR DESCRIPTIONS ...................................... 36
Controller Connector Descriptions 36
MK5 NX, NX-75, NX-B and NX-LP 36
MK5 NX w/ACC 36
Battery Connector Pinout 37
Motor Connector Pinout 37
Joystick Connector Pinout 37
Drive Control Input (DCI) 37
DCI Connector Pinout for MK5 NX, MK5 NX-75, MK5 NX-B, and NX-LP 38
DCI Connector Pinout for MK5 NX w/ACC 38
Battery Charger Port 38
LIMITED WARRANTY ..................................................................... 39

SPECIAL NOTES
Part No 1110532 5MK5
™NX™Electronics
SPECIAL NOTES
Signal words are used in this manual and apply to hazards or unsafe practices which
could result in personal injury or property damage. Refer to the table below for
definitions of the signal words.
NOTICE
THE INFORMATION CONTAINED IN THIS DOCUMENT IS SUBJECT TO
CHANGE WITHOUT NOTICE.
 REPAIR OR SERVICE WARNING
Setup of the Electron c Controller s to be performed only by a qual f ed techn c an.
The adjustments of the controller may affect other act v t es of the wheelcha r.
Damage to the equ pment could occur under these c rcumstances.
 OPERATION WARNING
Performance adjustments should only be made by profess onals of the health care
f eld or persons fully conversant w th th s process and the dr ver's capab l t es.
Incorrect sett ngs could cause njury to the dr ver, bystanders, damage to the
wheelcha r and surround ng property. After the wheelcha r has been setup, check to
make sure that the wheelcha r performs to the spec f cat ons entered n the setup
procedure. If the wheelcha r does not perform to spec f cat ons, turn the wheelcha r
off mmed ately and re-enter setup spec f cat ons. Repeat th s procedure unt l the
wheelcha r performs to spec f cat ons.
 WARNING
Invacare products are spec f cally des gned and manufactured for use n conjunct on
w th Invacare accessor es. Accessor es des gned by other manufacturers have not
been tested by Invacare and are not recommended for use w th Invacare products.
SIGNAL WORD MEANING
WARNING
Warning indicates a potentially hazardous situation hich, if not avoided,
could result in death or serious injury.
CAUTION
Caution indicates a potentially hazardous situation hich, if not avoided,
may result in property damage.

SECTION 1—GENERAL GUIDELINES
MK5
™NX™Electronics 6Part No 1110532
SECTION 1—GENERAL GUIDELINES
 WARNING
SECTION 1 - GENERAL GUIDELINES conta ns mportant nformat on for the safe
operat on and use of th s product. DO NOT use th s product or any ava lable
opt onal equ pment w thout f rst completely read ng and understand ng these
nstruct ons and any add t onal nstruct onal mater al such as Owner’s Manuals,
Serv ce Manuals or Instruct on Sheets suppl ed w th th s product or opt onal
equ pment. If you are unable to understand the Warn ngs, Caut ons or Instruct ons,
contact a healthcare profess onal, dealer or techn cal personnel before attempt ng
to use th s equ pment - otherw se, njury or damage may occur.
Controller Settings/Repair or Service
Set-up of the Electronic Control nit is to be performed only by a qualified technician.
The final adjustments of the controller may affect other activities of the wheelchair.
Reprogramming the controller reduces the stability/control of the wheelchair. Other
program settings could cause the wheelchair to tip over resulting in serious injury to the
user and/or damage to the surrounding property.
Operation Information
After the wheelchair has been set-up, check to make sure that the wheelchair performs to
the specifications entered during the set-up procedure. If the wheelchair does not
perform to specifications, turn the wheelchair off immediately and reenter set-up
specifications. Repeat this procedure until the wheelchair performs to specifications.
Invacare products are specifically designed and manufactured for use in conjunction with
Invacare accessories. Accessories designed by other manufacturers have not been tested
by Invacare and are not recommended for use with Invacare products.
DO NOT use the wheelchair if the joystick boot is torn or cracked. If the joystick boot
becomes torn or cracked, replace IMMEDIATELY.
If the joystick knob is missing, DO NOT use the wheelchair. In case of a fall, the exposed
stem could cause serious personal injury.
Periodically inspect the joystick and joystick cable for damage. Joystick cable M ST be
routed and secured properly to ensure that cable does not become entangled and
damaged/pinched during normal operation of wheelchair. If the joystick and/or cable is
damaged, DO NOT use the wheelchair.
If the joystick knob does not return back to the neutral position, DO NOT use the
wheelchair.

SECTION 2—EMI INFORMATION
Part No 1110532 7MK5
™NX™Electronics
SECTION 2—EMI INFORMATION
 WARNING
CAUTION: IT IS VERY IMPORTANT THAT YOU READ THIS INFORMATION
REGARDING THE POSSIBLE EFFECTS OF ELECTROMAGNETIC
INTERFERENCE ON YOUR POWERED WHEELCHAIR.
Electromagnet c Interference (EMI) From Rad o Wave Sources
Powered wheelcha rs and motor zed scooters ( n th s text, both w ll be referred to
as powered wheelcha rs) may be suscept ble to electromagnet c nterference (EMI),
wh ch s nterfer ng electromagnet c energy (EM) em tted from sources such as
rad o stat ons, TV stat ons, amateur rad o (HAM) transm tters, two way rad os, and
cellular phones. The nterference (from rad o wave sources) can cause the powered
wheelcha r to release ts brakes, move by tself, or move n un ntended d rect ons. It
can also permanently damage the powered wheelcha r's control system. The
ntens ty of the nterfer ng EM energy can be measured n volts per meter (V/m).
Each powered wheelcha r can res st EMI up to a certa n ntens ty. Th s s called ts
" mmun ty level." The h gher the mmun ty level, the greater the protect on. At th s
t me, current technology s capable of ach ev ng at least a 20 V/m mmun ty level,
wh ch would prov de useful protect on from the more common sources of rad ated
EMI.
There are a number of sources of relat vely ntense electromagnet c f elds n the
everyday env ronment. Some of these sources are obv ous and easy to avo d.
Others are not apparent and exposure s unavo dable. However, we bel eve that by
follow ng the warn ngs l sted below, your r sk to EMI w ll be m n m zed.
The sources of rad ated EMI can be broadly class f ed nto three types:
1) Hand-held Portable transce vers (transm tters-rece vers w th the antenna
mounted d rectly on the transm tt ng un t. Examples nclude: c t zens band (CB)
rad os, "walk e talk e", secur ty, f re and pol ce transce vers, cellular telephones,
and other personal commun cat on dev ces).
NOTE: Some cellular telephones and similar devices transmit signals while they are ON,
even when not being used.
2) Med um-range mob le transce vers, such as those used n pol ce cars, f re trucks,
ambulances and tax s. These usually have the antenna mounted on the outs de of
the veh cle; and
3) Long-range transm tters and transce vers, such as commerc al broadcast
transm tters (rad o and TV broadcast antenna towers) and amateur (HAM)
rad os.
NOTE: Other types of hand-held devices, such as cordless phones, laptop computers,
M/FM radios, TV sets, CD players, cassette players, and small appliances, such as elec-
tric shavers and hair dryers, so far as we know, are not likely to cause EMI problems to
your powered wheelchair.

SECTION 2—EMI INFORMATION
MK5
™NX™Electronics 8Part No 1110532
 WARNING
Powered Wheelcha r Electromagnet c Interference (EMI)
Because EM energy rap dly becomes more ntense as one moves closer to the
transm tt ng antenna (source), the EM f elds from hand-held rad o wave sources
(transce vers) are of spec al concern. It s poss ble to un ntent onally br ng h gh
levels of EM energy very close to the powered wheelcha r's control system wh le
us ng these dev ces. Th s can affect powered wheelcha r movement and brak ng.
Therefore, the warn ngs l sted below are recommended to prevent poss ble
nterference w th the control system of the powered wheelcha r.
Electromagnet c nterference (EMI) from sources such as rad o and TV stat ons,
amateur rad o (HAM) transm tters, two-way rad os, and cellular phones can affect
powered wheelcha rs and motor zed scooters.
FOLLOWING THE WARNINGS LISTED BELOW SHOULD REDUCE THE
CHANCE OF UNINTENDED BRAKE RELEASE OR POWERED WHEELCHAIR
MOVEMENT WHICH COULD RESULT IN SERIOUS INJURY.
1) Do not operate hand-held transce vers (transm tters rece vers), such as c t zens
band (CB) rad os, or turn ON personal commun cat on dev ces, such as cellular
phones, wh le the powered wheelcha r s turned ON;
2) Be aware of nearby transm tters, such as rad o or TV stat ons, and try to avo d
com ng close to them;
3) If un ntended movement or brake release occurs, turn the powered wheelcha r
OFF as soon as t s safe;
4) Be aware that add ng accessor es or components, or mod fy ng the powered
wheelcha r, may make t more suscept ble to EMI (NOTE: There s no easy way
to evaluate the r effect on the overall mmun ty of the powered wheelcha r); and
5) Report all nc dents of un ntended movement or brake release to the powered
wheelcha r manufacturer, and note whether there s a source of EMI nearby.
Important Informat on
1) 20 volts per meter (V/m) s a generally ach evable and useful mmun ty level
aga nst EMI (as of May 1994) (the h gher the level, the greater the protect on);
2) The mmun ty level of the product s unknown.
Mod f cat on of any k nd to the electron cs of th s wheelcha r as manufactured by
Invacare may adversely affect the RFI mmun ty levels.

SECTION 3—TROUBLESHOOTING
Part No 1110532 9MK5
™NX™Electronics
SECTION 3—TROUBLESHOOTING
All Power Wheelchairs
SYMPTOM PROBABLE CAUSE SOLUTIONS
Error Code E03 or E04,
3 or 4 flashes of joystick
LEDs.
Motor lock levers disengaged. Engage motor lock levers. Refer to the heelchair
O ner’s Manual for more information.
Bad motor connection. Check all motor connections.
Ohm out motors. Check brushes and replace if
necessary. Replace motors if high reading is present.
Normal reading is 0.2-5 Ohms (4 Pole motors) or
0.5-5 Ohms (2 Pole motors). Refer to heelchair
Service Manual.
Bad brake coil Ohm out brake connection. Normal reading is 40-
80 Ohms.
Error Code E02, 2 flashes
of joystick LEDs.
Batteries need to be charged. Charge batteries. Refer to the heelchair O ner’s
Manual for charging instructions.
Joystick erratic or does
not respond as desired.
Damaged motor coupling. Contact Dealer/Invacare for Service.
Electrical malfunction. Contact Dealer/Invacare for Service.
Controller programmed
improperly.
Contact Dealer/Invacare to have controller
reprogrammed.
Wheelchair veers to the
left or right hen driving
on level surface.
Joystick needs to be calibrated. Calibrate joystick ith programmer. If this does not
ork, replace joystick. Refer to Joystick Thro on
page 32 for calibration information.
No LED’s on joystick. Joystick connection to
controller unplugged or
damaged.
Check all joystick connections. Refer to heelchair
O ner’s Manual. If damage is found, replace
joystick.
Corroded iring or
connections.
Possible ater, salt, or urine
damage.
Replace iring harness. Refer to heelchair
O ner’s Manual.
Wheelchair does not
respond to commands.
Poor battery terminal
connection.
Have clean terminals. Refer to heelchair O ner’s
Manual.
Bad joystick connection. Check all joystick connections. Refer to heelchair
O ner’s Manual.
Bad iring harness connection
or blo n fuse.
Replace iring harness. Refer to heelchair
O ner’s Manual.
Battery charger connected to
joystick.
Unplug battery charger.
Po er indicator off - even
after recharging.
Electrical malfunction. Contact Invacare.

SECTION 3—TROUBLESHOOTING
MK5
™NX™Electronics 0 Part No 1110532
Wheelchairs With Elevate Systems
SYMPTOM PROBABLE CAUSE SOLUTIONS
Seating system not functioning
or orking intermittently.
Lo batteries. Charge batteries. Refer to the seating system
O ner’s Manual.
Faulty electrical
connection.
Check all connections.
Blo n fuse. Replace iring harness. Refer to the seating system
O ner’s Manual.
Seat has been driven
under a heavy load for an
extended period of time.
Allo time for the electronics to cool do n (Light
Duty Use). Leave po er on, and do not activate
po ered seating functions for at least 3 minutes.
Open Motor connection/
Motor locks disengaged.
Check all motor connectors.
Make sure motor locks are engaged.
Wheelchair slo s hile driving. Elevating seat is elevated.
The elevating seat is
equipped ith a speed
reduction safety
mechanism. While the
seat is in an elevated
position, the safety
feature slo s the speed
of the heelchair by 80%.
Return the seat to its lo est position. Refer to the
seating system O ner’s Manual.
Wheelchair drives at full speed
hen seat is elevated.
Faulty electrical
connection.
Check all connectors.
Malfunctioning seating
system controller.
Check for error codes. Refer to Performance
Adjustments on page 22 for the correct perfor-
mance adjustment menu descriptions. Replace seat-
ing system controller, if necessary. Contact
Invacare.

SECTION 4—JOYSTICK DESCRIPTIONS
Part No 1110532 MK5
™NX™Electronics
SECTION 4—JOYSTICK
DESCRIPTIONS
SP ™and CSP ™ oystick Switches and Indicators
NOTE: For the following information, refer to FI URE 4.1.
FIGURE 4.1 SPJ™and CSPJ™Joystick Switches and Indicators
On/Off Switch
SPJ Joyst cks
This toggle switch is located at the rear of the joystick housing.
CSPJ Joyst cks
This button is located on top of the joystick housing at the rear of the joystick.
Joystick
Speed Control Knob
On/Off
Toggle Switch
Charger/
Programming Input
To Controller
Joystick
Information
auge On/Off
Button
To Controller
Multi-Function
Charger Port
Horn
Speed
Control Knob
CSPJ Joystick
SPJ Joystick

SECTION 4—JOYSTICK DESCRIPTIONS
MK5
™NX™Electronics 2 Part No 1110532
Speed Control Knob
The speed control knob is located on the back of the joystick housing. This rotary switch
is used for controlling the speed and acceleration of the wheelchair.
1. Turn the switch clockwise to increase the speed of the wheelchair.
2. Turn the switch counterclockwise to decrease the speed of the wheelchair.
Joystick
The joystick has proportional drive control, meaning that further the joystick is pushed
from the upright (neutral) position, the faster the wheelchair moves. Your top speed,
however, is limited by the setting of the speed-control knob and programmed settings.
To slow the wheelchair to a stop, simply release the joystick. The wheelchair has
automatic speed and direction compensation to minimize corrections.
Charger/Programming Input
Located at the front of the joystick housing. This provides easy access for charging the
wheelchair batteries. This port also serves as the Remote Programmer Communication
connection.
Information Gauge Display
The Information Gauge Display is located on the front of the joystick housing. It provides
the following information to the user on the status of the wheelchair -
1. Power is on.
2. True state-of-battery-charge, including notification of when the battery requires
charging:
A. GREEN LED is lit, indicating well charged batteries.
B. Only AMBER LEDs are lit, indicating batteries are moderately charged. Recharge
batteries before taking a long trip.
C. Only RED LED is lit, indicating batteries are running out of charge. Recharge
batteries as soon as possible.
3. Program, inhibit or charge modes.
4. Fault indication (Flash Codes).
The Information Gauge display also serves as a system diagnostic device when a fault is
detected by the control module. A specific number of flashes of the LEDs indicate the
type of fault detected. Refer to the following table of the diagnostic indications of the
wheelchair status.

SECTION 4—JOYSTICK DESCRIPTIONS
Part No 1110532 3 MK5
™NX™Electronics
SPJ Diagnostic Indications of Wheelchair Status
DISPLAY DESCRIPTION DEFINITION COMMENTS
All three (3) LEDs are off. Po er is Off.
All three (3) LEDs are on. Po er is On. Fe er than three (3)
LEDs on implies reduced
battery charge.
RED LED is flashing. Battery charge is lo . The batteries should be
charged as soon as possi-
ble.
Left to Right “chase” alter-
nating ith steady display.
Joystick is in program-
ming, inhibit and/or charg-
ing mode.
The steady LEDs indicate
the current state of the
battery charge.
GREEN LED is flashing. Joystick is in Speed Limit
mode.
The current state of bat-
tery charge ill be dis-
played at the same time.
All LEDs are flashing slo ly. Joystick has detected Out-
of-Neutral-at-Po er-Up
mode.
Release the joystick back
to Neutral.
All LEDs are flashing
quickly.
Joystick has detected a
fault.
Joystick uses Flash codes
to indicate faults.
INVACARE
INVACARE
INVACARE
INVACARE
INVACARE
INVACARE
INVACARE

SECTION 4—JOYSTICK DESCRIPTIONS
MK5
™NX™Electronics 4 Part No 1110532
CSPJ Diagnostic Indications of Wheelchair Status
DISPLAY DESCRIPTION DEFINITION COMMENTS
All LEDs are off. Po er is Off.
All LEDs are on. Po er is On. Fe er than three (3)
LEDs on implies reduced
battery charge.
Left RED LED is flashing. Battery charge is lo . The batteries should be
charged as soon as possi-
ble.
Left to Right “chase” alter-
nating ith steady display.
Joystick is in program-
ming, inhibit and/or charg-
ing mode.
The steady LEDs indicate
the current state of the
battery charge.
Right GREEN LED is flash-
ing.
Joystick is in Speed Limit
mode.
The current state of bat-
tery charge ill be dis-
played at the same time.
All LEDs are flashing slo ly. Joystick has detected Out-
of-Neutral-at-Po er-Up
mode.
Release the joystick back
to Neutral.
All LEDs are flashing
quickly.
Joystick has detected a
fault.
Joystick uses Flash codes
to indicate faults. Refer to
the electronics manual
(Part Number 1110532).

SECTION 4—JOYSTICK DESCRIPTIONS
Part No 1110532 5 MK5
™NX™Electronics
SP + and SP + w/ACC oystick Switches and Indicators
NOTE: For this procedure, refer to FI URE 4.2.
FIGURE 4.2 SPJ+ and SPJ+ w/ACC Joystick Switches and Indicators
On/Off
Button
DETAIL “A” -
FRONT VIEW
Charger/
Programming
Input
Speedometer
Joystick
REEN
LED
Information
auge
Display
Service Indicator
Decrease
Speed Button
(Tortoise) Increase
Speed Button
(Hare)
Mode Button
SPJ+ w/ACC Joystick
On/Off
Button
DETAIL “A” -
FRONT VIEW
Charger/
Programming
Input
Speedometer
Joystick
REEN
LED
Information
auge
Display
Service Indicator
Decrease
Speed Button
(Tortoise) Increase
Speed Button
(Hare)
SPJ+ Joystick

SECTION 4—JOYSTICK DESCRIPTIONS
MK5
™NX™Electronics 6 Part No 1110532
On/Off Button
This button is located at the front of the joystick housing. It is used to turn the wheelchair
on and off, to remove the joystick from sleep mode (if programmed) and to lock or unlock
the joystick (if programmed).
Speedometer
The speedometer is used to show the maximum speed. The right-most LED indicates
current maximum speed setting. The bottom left GREEN LED flashes to indicate that the
joystick is in speed limit mode. Speed limit mode limits the drive speed to a pre-
programmed value, typically when the seat has been elevated and the wheelchair is
required to drive at 20% speed.
Speed Control Buttons
The speed control buttons (tortoise button ( ) and hare button ( )) are used to set and
adjust the maximum speed.
1. To adjust the speed, perform one (1) of the following:
• Adjust Speed in 20% Increments (5 Speed Mode) - Press the tortoise button ( )
or hare button ( ) to decrease/increase the speed in 20% increments. The larger
bars in the speedometer will light.
• Adjust Speed in Smaller Increments (VSP Mode) - Perform the following steps:
i. Press and hold both the tortoise button ( ) and hare button ( ) until the
joystick beeps.
ii. Perform one (1) of the following:
• Press the tortoise button ( ) or hare button ( ) to decrease/increase the
speed in 20% increments. The larger bars in the speedometer will light.
• Press and hold the tortoise button ( ) or hare button ( ) to decrease/
increase the speed in smaller increments. The smaller bars in the
speedometer will light.
Mode Button
NOTE: The mode button is present on the SPJ+ w/ACC joystick only.
Press the mode button to switch from driving mode to elevate mode. Refer to the
wheelchair owner’s manual for elevating seat operating instructions.

SECTION 4—JOYSTICK DESCRIPTIONS
Part No 1110532 7 MK5
™NX™Electronics
Joystick
The joystick has proportional drive control, meaning that further the joystick is pushed
from the upright (neutral) position, the faster the wheelchair or seat moves. Your top
speed, however, is limited by the programmed settings.
To slow the wheelchair to a stop, simply release the joystick. The wheelchair has
automatic speed and direction compensation to minimize corrections.
Charger/Programming Input
The charger/programming input is located at the front of the joystick housing. This
provides easy access for charging the wheelchair batteries. This port also serves as the
Remote Programmer Communication connection. Driving is prevented while the system
is charging.
Service Indicator
The AMBER service indicator will light when an error or fault occurs. Refer to Diagnostic
Codes on page 33 for a listing of the flash codes and what they indicate.
Information Gauge Display
Located on the front of the joystick housing, it provides the following information to the
user on the status of the wheelchair -
1. Power is on.
2. True state-of-battery-charge, including notification of when the battery requires
charging:
A. GREEN LEDs are lit, indicating well charged batteries.
B. AMBER LEDs are lit, indicating batteries are moderately charged. Recharge
batteries before taking a long trip.
C. RED LEDs are lit, indicating batteries are running out of charge. Recharge batteries
as soon as possible.
The Information Gauge display also serves as a system diagnostic device when a fault is
detected by the control module. A specific number of flashes of the LEDs indicate the type
of fault detected. Refer to the table for the diagnostic indications of the wheelchair status.

SECTION 4—JOYSTICK DESCRIPTIONS
MK5
™NX™Electronics 8 Part No 1110532
DISPLAY DESCRIPTION DEFINITION COMMENTS
All LEDs are off. Po er is off.
All LEDs are on. Po er is on. Fe er than three (3)
LEDs on implies reduced
battery charge.
Left RED LED is flashing. Battery charge is lo . The batteries should be
charged as soon as possi-
ble.
Right to Left “chase”. Joystick is being brought
out of LOCK mode.
To UNLOCK the joystick,
press the horn button
t o (2) times ithin ten
(10) seconds.
Left to Right “chase” alter-
nating ith steady display.
Joystick is in program-
ming, inhibit and/or charg-
ing mode.
The steady LEDs indicate
the current state of the
battery charge.
All LEDs are flashing slo ly. Joystick has detected Out-
of-Neutral-at-Po er-Up
mode.
Release the joystick back
to Neutral.

SECTION 5—REMOTE PROGRAMMER
Part No 1110532 9 MK5
™NX™Electronics
SECTION 5—REMOTE
PROGRAMMER
Overview
NOTE: For this procedure, refer to FI URE 5.1.
The Remote Programmer is the information center of the control module. Through simple
key sequences, the Remote Programmer allows modification of the performance
characteristics, gives diagnostics information for troubleshooting and permits calibration
of the control module.
NOTE: The joystick power switch must be on for the programmer to operate. If the programmer
displays “Communication Error”, disconnect the programmer and reconnect it with the joystick
turned on.
FIGURE 5.1 Overview
SAVE Key
SELECT
Key
POWER Key
MENU Key
DOWN
Key
UP Key
LCD Display
Remote
Programmer
Remote
Programmer
To Joystick
Multi-Function
Charger Input
Multi-Function
Charger Input
SPJ
Joystick
CSPJ
Joystick
SPJ+ w/ACC
Joystick
SPJ+
Joystick

SECTION 5—REMOTE PROGRAMMER
MK5
™NX™Electronics 20 Part No 1110532
Remote Programmer Terminology
Function
A function is a performance characteristic which can be adjusted or modified to improve
the operation of the wheelchair for a particular control need. Two (2) examples are:
The forward speed function may be adjusted to a higher or lower speed the same way as
you would adjust a trimpot in other controls.
Stand-by Mode Function may be turned ON or OFF the same as a switch would be used.
All functions are listed in a menu.
Value
Each function has a value. It is the degree or amount of the function which is used to
influence the overall wheelchair performance. Most values are numerical or in
percentages, for instance - high speed may be set to 75% of the wheelchair's maximum.
For others, the value is either ON or OFF, for example - Stand-by Mode. Changing a value
is called Adjustment.
Program (Preset Programs with Standard Value Settings)
The standard programs are fixed function values which are used as an initial set up point
from which individualization of the wheelchair performance can begin. Standard values
are NEVER altered or modified. Refer to Programs on page 29.
Temporary Memory
This is the location where function values may be altered to suit individual needs by using
the remote programmer. nless saved, changes to the values in the temporary memory
will be erased when the wheelchair power is turned off. Refer to ser Memory Values
below.
User Memory Values
ser memory is the location where the individualized function values are permanently
stored. Each time the power switch is turned on, these values are copied to the temporary
memory and are used to control the wheelchair performance. The user memory values
can only be changed through the Remote Programmer by first modifying the temporary
memory values and then by saving them in the user memory where they become the user
program. The Remote Programmer is activated by pressing the POWER key when the
wheelchair is in neutral. The wheelchair cannot be driven when the LCD display is
illuminated. The display will automatically turn itself OFF after 45 seconds if no keys are
pressed. It can also be turned OFF by pressing the POWER key.