Philips Sunmobile 4S HB 971/A - Technical Information; Product Operation and Control

TECHNICAL INFORMATION
Tanning appliance HB971 is equipped with a universal
power PCB.
This means that the specific characteristics of the
appliance have to be programmed in a microcontroller
to determine the way in which various components
are activated.
When the mains plug is inserted into the wall socket,
the display of the remote control will show all functions
available to the user.
Including the various combinations, these functions
are:
The UV lamps may produce a humming sound just
after start-up. This humming sound will stop as soon
as the lamps burn properly, which is after about
20 seconds. At this point the light intensity clearly
increases.
During the last minute of the session the beeper
produces an intermittent signal to alert the user to the
fact that a new session can be set.
After pressing the key, the display showing and,
the UV working hours will be shown. After 750
operating hours, an L will automatically appear on the
display to indicate that the HPA lamps need to be
replaced or the tanning time must be slightly
increased.
The clock speed of the µ-controller is derived from the
50 Hz mains frequency.
This frequency is also used to control the 8 triacs that
determine the switch-in point (soft start) of the cos !
capacitors and the HPA lamps.
The fans are switched via the safety relay.
This relay is part of the (one fault condition) timer
circuit.
If the control of the triacs is disturbed due to a fault in
the µ-controller, the UV lamps may not be switched
off.
As the µ-controller also generates a pulsating direct
voltage to power the relay, the relay will be
de-energised in case of a fault, thereby interrupting
the lamp circuit.
Conversely, the appliance will not start if the switch
contacts of the relay are closed at that moment
(sticking contacts).
The remote control is galvanically isolated from the
mains, with power supply and control taking place via
a 4-core cable.
The remote control only functions as input/output
terminal.
M4
L
M3
M2
C11
T1
R9
N
M1
R6
R5
Tr8
R10
L1B
La
1
B1
L
L
N
IR
C2
C4
C3
C1
Tr7
Tr6
Tr5
Tr4
Tr3
Tr2
Tr1
M1
L1A
B9
B7
L6C7
L2
B8
B6
L7C8
L3
B3
B5
L8C9
L4
B2
B4
L9C10
La
2
La
3
La
4
TCO4
N
Re1
N
TCO3SK6
SK5
SK2TCO2
SK3
SK4
C1
C2
C3
C4
M2
M3
M4
safety
C12
R7
R8
TCO1
"C
IR
time setting
full body tanning
full body + facial tanning
half body + facial tanning
half body tanning