Unique Klasse DSA-0910LG-M, Service Manual

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B B.. P Pa arrtt o op pe erra attiio on n
1 1))M Ma aiin n p po ow we err p pa arrtt
It is consisted of Bridge diode,SMPS circuit,Gener diode and Regulator.
It produces DC 12V,5V power.
12V is connected to drive IC,Relay and the display parts.5V is connected to micom.
SMPS circuit is consisted of trans,SMPS,IC and photo coupler.It produces power in
proportion to the needs that saves power over 90%.Its nice to have wi der range of vol tage
uses(about 15%wider than trans one).
2 2))R Re es se ett p pa arrtt
It protects the operation of micom in accordance to the main power on/off.
It output 'High'(5V)when it has over 4.2V at reset,otherwise it keeps 'Low'(0V).
3 3))S Stta arrtt p pa arrtt
It start at 8MHz,and becomes the standard clock.
4 4))D Diis sp plla ayy p pa arrtt
It shows the operation status.It has DC 12V dynamic scan and 7 x 5 matrix.Composition.
5 5))IIn np pu utt k ke eyy p pa arrtt
It has total 6 keys.Current key is a switch sensing the change of the power capacity caused
by human body touch.
The key perceives the human touch by the change of the power output from high to low.
6 6))R Re em mo otte e c co on nttrro oll s se en ns so orr p pa arrtt
It amplifies and demodulates the sign from the remote control (Carrier cycle 38KHz)that
transmits to the micom to perceive it.
7 7))T Th he e c co om mm mu un niic ca attiio on n p pa arrtt
I t makes t he i ndoor and out door uni t s to communi cat e that monitors and transmit signs of
compressor,outdoor fan,E/valve operation sign and the status.
8 8))S Se en ns so orr iin np pu utt p pa arrtt
DC 5V divided by basic resistance (R,12.7K)and sensor resistance (Rth)is input to the
micom.
The power input into micom can be calculated as followings.
Vin(v)=(Rth x 5V)/(Rth +R)
The power value is converted to find the temperature by the A/D converter of the micom.
9 9))O Orrd de err o ou uttp pu utt p pa arrtt
It transmit the signs from the micom through Drive IC,Relay to on and off each functions of
fan motor,step motors,electronic valve,UV lamp and buzzer.