Black & Decker RVA425B User manual

Version 1
SERVICE MANUAL
ROBOTIC VAC
BLACK + DECKER
RVA425B
RVA420B
1

Version 1 2
DURING HANDS ON
USE STATIC PROTECTION DEVICE
AFTER REPAIR
BEFORE TO DISASSEMBLING THE UNIT, BRUSHES, FILTER AND
BATTERY MUST BE REMOVED AS SHOWED ON Cleaning &
Maintenance and Battery PARAGRAPHS

Version 1 3
ENGLISH GERMAN ITALIAN FRENCH SPANISH PORTUGUESE DUTCH
CHECK ÜBERPRÜFEN CONTROLLARE CONTROLER COMPROBAR VERIFIQUE CONTROLEREN
ATTENTION ! ACHTUNG ! ATTENZIONE ! ATTENTION ! ATENCION ! ATENÇÃO! ATTENTIE !
USE STATIC
PROTECTION
DEVICE
ANTISTATIK
MATTE
BENUTZEN
USARE I DISPOSITIVI
ANTISTATICI
UTILISEZ UN
EQUIPEMENT DE
PROTECTION
ANTISTATIQUE
USE PROTECCION
ANTIESTATICA USE PROTEÇÃO
ESTATICA GEBRUIK ANTI -
STATISCH MATERIAAL
TURN
COUNTER
CLOCKWISE
DREHEN GEGEN
UHRZEIGERSINN GIRARE IN SENSO ANTIORARIO
TOURNEZ DANS LE
SENS INVERSE DES
AIGUILLES D’UNE
MONTRE
GIRO IZQUIERDA GIRAR SENTIDO ANTI-
HORARIO DRAAI LINKSOM
MOVE IN THIS
DIRECTION IN RICHTUNG BEWEGEN MUOVI IN DIREZIONE BOUGEZ DANS CETTE DIRECTION DIRECION DE LA FLECHA AVANÇAR NESSA DIREÇAO
BEWEEG IN DE
RICHTING VAN DE
PIJL
CORRECT RICHTIG CORRETTO CORRECT CORRECTO CORRECTO GOED
ATTENTION!
REMOVE
BATTERY
ACHTUNG!
AKKU
ENTFERNEN
ATTENZIONE!
RIMUOVERE LA
BATTERIA
ATTENTION !
RETIREZ LA
BATTERIE
ATENCION!
QUITAR LA
BATERIA
ATENÇÃO!
RETIRAR A
BATERIA
OPGELET !
VERWIJDER DE
BATTERIJ
LIFT OVER ANHEBEN SOLLEVARE SOULEVEZ LEVANTAR LEVANTAR SOBRE A OPHEFFEN
PUSH DRÜCKEN PREMERE APPUYEZ APRETAR EMPURRAR DUWEN
DISCONNE
CT TRENNEN SCOLLEGARE DEBRANCHEZ
DESCONECTAD
ODESLIGAR
ONTKOPPELEN
CHECK THE
CHARGE OF
THE
BATTERY
LADEGERÄT
ÜBERPRÜFE
N
CONTROLLARE
CHE LA
BATTERIA SIA
CARICA
VERIFIEZ LA
CHARGE DE LA
BATTERIE
COMPRUEBE LA
CARGA DE LA
BATERIA
VERIFIQUE A
CARGA DA
BATERIA
CONTROLEER
DE BATTERIJ
CROSS
HEAD
SCREWD
RIVER
PH –
SCHRAUBE
N- DREHER
CACCIAVITE
PH TOURNEVIS CRUCIFORME
DESTORNILLA
DOR DE
ESTRELLA
CHAVE
PHILIPS
KRUIS
SCHROEVENDRA
AIER (PH TYPE)

Version 1
Diagnosis Software
Cleaning Maintenance
Battery
Switch & Charger
Motor and Wheels
Front wheel
Fan Motor
Central Brush Motor
Side Brushes Motors
Cliff Sensor
Bumper & IR
Led
Wiring
Faq
4

Version 1 5
To run the diagnostic program you will need the diagnostic software, cable and associated
driver installed. Plug the black end of the cable into your pc, and the white end of the cable
into the robot's USB port in the dust cassette well.
With the unit turned off, run xr668selftest.exe. You'll need to select the com port number
the cable is assigned (check in device manager) and set the baud rate to 115200. Click on
“Start”.
The “Machine details” section will give you the model number, software version and any
error code
Diagnosis Software

Version 1 6
Cliff sensor
Place unit on black surface all cliff sensor lights
should be green. Raise unit to height of 14cm
over a white surface, all cliff sensor lights
should be off. The mV value for each sensor will
increase as the distance between the sensor
and surface is reduced. If any one of the
sensors is not behaving as expected then
replace the cliff sensor array
Go to Cliff sensor
IR sensor
The top and bottom fields are not used in the
current models.
With a piece of white paper at approximately
3cm from the front bumper, move it from left
to right to cover each sensor location, when
blocked the relevant front sensor light should
show green. If any one of the sensors is nor
responding correctly then replace the front
sensor array.
Go to Bumper & IR
Cradle charge
The Cradle charge light should be green when
the unit is placed on the charging base
correctly, with power to the base. If it does not
light up, first check the Direct charge works, if
this does not then check with a new charger, if
the Direct charge works then check with a new
charging base. If there is still no light present
then check the contact plates and connection
to main PCB within the unit.
Go to Switch & Charger
Diagnosis Software

Version 1 7
Direct charge
The Direct charge light should be green when
the charger is connected directly into the
charging socket on the unit, with power to the
charger. If it does not light up then check with a
new charger, if this doesn’t work then check
the connection of the switch/charger module
with the main PCB and replace if necessary.
Go to Switch & Charger
Bumper sensors
Push the front bumper on the left side then
right and finally centre. The L Bumper light
should show green when the left is pushed, R
Bumper when right side is pushed and both
should light when the centre is pushed. If there
is no light then check the bumper actuators are
making contact with the micro switch for the
relevant side, if they are then check the micro
switch connection and replace if faulty.
Go to Bumper & IR
Ground test
With the unit flat on a surface the L Side Down
and R Side Down lights should both be green.
Lifting the unit fully clear of the surface should
cause both left and right wheels to extend and
both lights should go out. If the lights do not
illuminate or turn off then check the
movement of the relevant wheel.
Go to Motor & Weels
Diagnosis Software

Version 1 8
Side Brushes
If either side brush is jammed with power to
its motor then the Side Brush light will be
green, check each side for lack of movement
and any interference.
Go to Side Brushes Motors
Go to Front Wheel
Front Wheel
Manually rotate the front wheel, this should
cause the green light to come on, if it does not
then check for any interference in the
mechanism and check the connection to the
main PCB.
Go to Cleaning Maintenance
Go to Front Wheel
Motor Sensors
L wheel speed, R wheel speed, L wheel current
and R wheel current.
Current should less than about 150 mA on
each wheel, with a no load speed of 800-1200
p/s.
When applying pressure to each wheel, there
should be a strong resistance. If current is too
high and speed is low then check for
interference. If there is no movement and no
current value then check connection to main
PCB. If there is a fault then replace appropriate
wheel SA.
Go to Motor & Wheels
Diagnosis Software

Version 1 9
Fan current
Fan current should be less than 400 units. If
higher then check for blockages and interference
to fan, if fine then replace fan SA.If there is no
current then check connection to main PCB.
Go to Fan Motor
Beater current
The beater current should be less
than 350 units.
The bar should stop rotating when held.
If higher current draw then check for damage
and interference to bar, if this is fine then
replace beater bar motor SA.If there is no
current then check connection to main PCB.
Go to Cleaning Maintenance
Go to Central Brush Motor
Diagnosis Software

Version 1 10
Error
Error code details:
Error Code
Description
error0
No Error
error1
left cliff sensor error
error2
middle of
left cliff sensor error
error3
middle of
right cliff sensor error
error4
right cliff sensor error
error5
left bumper sensor error
error6
right bumper sensor error
error16
over
-current of main brush
error17
over
-current of vacuum
error18
low voltage of battery
error19
no left wheel speed detection
error20
no right wheel speed detection
error25
battery NTC short circuit
error26
battery NTC open circuit
error27
no vacuum motor current
error31
over
-current of left wheel motor
error32
over
-current of right wheel motor
error33
no dust bin
error34
no main brush motor current
error35
side brush error
Diagnosis Software

Version 1 11
Cleaning Maintenance

Version 1 12
Battery

Version 1 13
Disassembling
Before disassembling
brushes, filter and
battery must be removed

Version 1 14
Switch & Charger

Version 1 15
Output 24V
Switch & Charger

Version 1
R
16
L
Motor and Wheels

Version 1 17
Front wheel

Version 1 18
Fan Motor

Version 1 19
Central Brush Motor

Version 1 20
Side Brushes Motors