Daewoo Frs 2021 Service Manual

 
 
CONTENTS
  REMARKS
  1. 
Conditions to turn on  LCD Light 
   1)  Power input (plugin)  
2)  When any button on the panel is pushed, first the back light turns on, t\
hen 
button control is done.  
   3)  When F/R  door is open , the light turns on.  
 
 2.  Conditions to turn off the light  
    1)  The back light turns off 10 seconds after F/R door is closed   
2)  1 minute after button control     
Explanation After Delivery INPUT
  Control Object
  “
FRZ SET. ” button  
“ REF SET. ” button  
P...

Dela y  F unctio n o f E le c tr ic  C om ponen ts 
IN PU T C on tr o l O bje ct 
C O M P O N/O FF C O M P 
F-FA N 
C O NTE N TS R EM ARKS 
 
1) F-fa n d ela y b y c o m p. O N/O FF 
-> F-fa n  is O N/O FF 1 m in ute  a fte r c o m p. is  O N/O FF. 
 
 
 
2) F an D ela y a nd P rio rit y  
R  F A N
O N  c o ndit io n
0.5 se c.
O N
ON
ON1.0 se c.
1.5 se c.
F  F A N
C F A N
O FF
O FF
O FF
 
 
3) F /R-fa n d ela y b y d oor o pen/c lo se  fo r e asy d oor  
 - > In sp ectio n : c h ecku p d o or o p ening...

 
Home Bar (Refreshment Center) Heater (FR-S580CR MODEL) INPUT
  Control Object
  None
  COMP  CONTENTS
  REMARKS
  It is linked with comp.
   
 
Control of Interior Lights INPUT
  Control Object
  R
efrigerator Door  
Freezer Door  
Home -Bar Door   
( Refreshment Center ;  FR-S580CR)   COMP
  CONTENTS
  REMARKS
  1)
 Control of  Refrigerator Compartment Lights  
R  lights tu rn ON/OFF by R -door switch (ON/OFF).  
   * 10 minutes after sensing door open, the lights turn off automatically thou\
gh...

 
Regulation of R-sensor OFF Point INPUT
  Control Object
  J18, 22 on 
Main  PCB   Resistance of R-sensor Mid  OFF Point  CONTENTS
  REMARKS
   
 a. Regulation of R-sensor OFF point (1.5degree DOWN) 
 b. In case refrigeration of refrigerator is weak or insufficient, take the \
following action. 
R-SENSOR
 OP1-2
R26
R70
R71  OP1-1  
a. R26 : R-SENSOR standard resistance in normal mode (31.4K ) 

 
 b. R70 : In case of weak ref., cut J18 to down the standard resistance by 1.5deg(2K) 
 
 c. R71 : In case...

 
 MICOM Circuit 
  Power 
  Circuit 
 
 
 
DC Output Power (Voltage)    Point
  Oscilloscope 
 Measurement   Remarks
   
   
*  DC  output  
 
15.7V  
11.96V  
   
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
- 35 -
 

 
 SMPS Movement Wave 
    Drain to Source Break
 Voltage 
 Point
  Oscilloscope  Measurement   Remarks  SMP
SIC 
PIN
 
1,2     
  *Voltage between 
DRAIN
 and 
SOURCE  :  
below  650V   
   OVP(Overvoltage Protection) Wave at power input 

Point
 
Oscilloscope  Measurement   Remark
  SMPS  
IC PIN  
3,4
    *Minimum 
standard 
voltage at  OVP 
start :   
23.2V    
 
 
   
 
 
   
 
 
 
 
 
 
 
 
 
 
- 36 -
 

 
     Initial Power Wave of Switching Power IC 

Point
 
Oscilloscope Measurement   Remark
  SMPS  
IC PIN  
3,4
     
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
   
 
 
 
 
 
 
 
 
 
 
- 37 -
 

 
 
Sen so rs 
C ir c u it D ia g ra m 
 
 
  F unctio n o f  E ach  S en so r 
[  F-se nso r ] 
1 ) I t s e nse s t h e t e m pe ratu re  o f f r e eze r c o m partm ent a n d c o n tr o ls  Co m p., F-fa n O N /  O FF. 
2) H ow  it   w ork s ; 
W ork in g P oin t Low  O N M id  O FF H ig h  O FF 
W ork in g Tem p. -11.0  C  -20.0  C  - 26.0  C  
R esis ta nce  14.74  k   22.33 k    30.92  k  
S ensin g V olt a g e  3.50 V  3.00 V  2.14 V 
 
[ D-se nso r ] 
  ->  It s e n se s r e tu rn  p oin t  o f  d...

 
 
[ R-s e nso r ] 
1 ) I t s e nse s t h e t e m pera tu re  o f r e fr ig era to r c o m partm en t a nd  c o n tr o ls  R-fa n O N /  O FF. 
2 ) H ow  it   w ork s ; 
W ork in g P oin t Low  O N M id  O FF H ig h  O FF 
W ork in g Tem p. 2.65  C  0.3  C  -1.7 C   
Resis ta nce  26.88  29.34 32.00 
S ensin g V olt a g e  2.90V  2.81V  2.74V 
* In  c a se  r e fr ig e ra tio n o f  r e fr ig era to r c o m pa rtm en t  is  p oo r o r insu ffic ie nt  th ou gh  c o m p.  a nd  R-fa n o pera te  in  
n...

Fan  F un ctio n  
  H ow  It   W ork s  ; 
O N C ond it io n O FF  C on dit io n 
M ICO M  Po rt M IC O M  Po rt C ontr o l 
O bje ct 
C ontr o l 
M eth od 3 1 32 33 IC  Co lle cto r 3 1 32 33 IC  Co lle cto r 
Low  (1 0V ) 
opera tio n 5V 0V 0V 1 0.3 5V 0V 
M id  (1 2V ) 
opera tio n 0V 5V 0V 1 2.1 9V 0V F-F A N 
H ig h (1 4 V ) 
opera tio n 0V 0V 0V 1 4.3 8V 
5V 5V 5V 
0V 
 
O N C ondit ion O FF C ondit io n 
M IC O M  P O RT M IC O M  Po rt C ontr o l 
O bje ct 
C ontr o l 
M eth od 3 9 40 41 IC  Co...