TEST FORCED OPERATION / FORCED DEFROST When pressing the Fridge button and the Super freeze button on PANEL DISPLAY simultaneously for more than 8sec, PANEL DISPLAY will be turned off an
Trang 1RT62E/U/Z
RT58E/U/Z
RT62W/K/V RT58W/K/V
RT53/49E
Basic Model : RT62EA*
Model Name : RT62E*/W*/K*/U*/V*/Z*
RT58E*/W*/K*/U*/Z*
RT53E*, RT49E*
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TD-SM (08'전자식)-0328 2008.4.2 8:39 AM 페이지1
1 PRECAUTIONS 5
2 PRODUCT SPECIFICATIONS 8
3 DISASSEMBLY AND ASSEMBLY 17
4 TROUBLE SHOOTING 31
5 ILLUSTRATED PARTS CATALOG 52
6 PCB DIAGRAM 75
7 WIRING DIAGRAM 77
8 CIRCUIT DIAGRAM 78
9 REFERENCE INFORMATION 80
(Model Code)
Trang 2TD-SM (08'전자식)-0328 2008.4.2 8:39 AM 페이지2
Trang 3IMPORTANT SAFETY NOTICE
The service guide is for service personal with adequate electrical,electronic and mechanical experience Any attempt to repair a majorappliance may result in personal injury and property damage Themanufacturer or dealer cannot be responsible for the interpretation of thisinformation.
WARNING
TD-SM (08'전자식)-0328 2008.4.2 8:39 AM 페이지3
Trang 41 PRECAUTIONS (SAFETY WARNINGS) ···5
2 PRODUCT SPECIFICATIONS ···8
2-1 Model Specification ···9
2-2 View of Fridge & Freezer ···10
2-3 Comparison with Competitor ···13
2-4 Electiric Part Specification ···14
2-5 Dimension(mm) ···16
3 DISASSEMBLY AND ASSEMBLY ···17
3-1 Precautions ···18
3-2 Assy Door ···19
3-3 Door Sub Parts ···21
3-4 Refrigerator Compartments ···24
3-5 Freezer Compartments ···27
3-6 Machine Compartments···30
4 SELF DIAGONOSIS & TROUBLE SHOOTING···31
4-1 Check Point Before Trouble Shooting ···32
4-2 Trouble Shooting ···39
5 ILLUSTRATED PARTS CATALOG ···52
5-1 Freezer KA/UA/WA/EA Model ···53
5-2 Freezer VA/ZA Model ···55
5-3 Fridge – Model Without Cool Bin ···57
5-4 Fridge – Model With Cool Bin···59
5-5 Door – Model Without Dispenser ···61
5-6 Door – Model With Dispenser···65
5-7 Cabinet – EA/KA/UA/WA Model···69
5-8 Cabinet – VA/ZA Model ···72
6 PCB DIAGRAM ···75
6-1 Part Arrangement (Main Board) ···75
6-2 Connector Arrangement (Main Board) ···76
7 WIRING DIAGRAM ···77
8 CIRCUIT DIAGRAM ···78
8-1 Block Diagram ···78
8-2 Circuit Diagram ···79
9 REFERENCE INFORMATION ···80
9-1.REFRIGERATION CYCLE ···80
9-2.COOL AIR CIRCULATION ···81
9-3.FUNCTION & FEATURE···82
9-4.CIRCUIT DESCRIPTION···85
TD-SM (08'전자식)-0328 2008.4.2 8:39 AM 페이지4
Trang 56 PCB DIAGRAM
6-1) Part Arrangement (Main Board)
1 DC Voltage SUPPLY PART : From the Noise Filter, AC Voltage is supplied and the Powergenerated from DC 12V,5V is sent to Electronic or Electric PART
2 Supply Power to MOTOR by Types of MOTOR TILL 10-12V of FAN MOTOR Driving Part
3 EEPROM : SAVE/WRITE EVERY DATA
4 Transfer to MICOM by Removing Noise as Receving Inputs of Every SENSOR Signals and SenseDoor Open of COLD ROOM
5 Occurrence of MICOM and CLOCK & Software RESET PART
6 Perform the Role of Managing Interface in PANEL ↔ MAIN PCB Communication Signal (Key Inputand Display Indication)
7 Operating Role of COLD ROOM DAMPER and DAMPER HEATER
8 Operate Receving Driving Signal of MICOM through Sink IC by Controlling AC LOAD to RELAY PART
9 CONNECTOR PART that Connects AC LOAD
10 DIODE Option Setting PART for Option Setup
11 BUZZER ALARM PART
1 2
10
11
TD-SM (08'전자식)-0328 2008.4.2 8:41 AM 페이지75
Trang 6PCB DIAGRAM
6-2) Connector Arrangement (Main Board)
CN10 - AC INPUT
: NEUTRAL : LIVE
CN30 - Sensor & Switch
: F-Door Switch : GND
: F-Sensor : F-DEF-Sensor : R-Door Switch : GND
: R-Sensor : OPEN
CN50 DISPLAY
: Display Switch input : Display LED Driver : OPEN
CN70 - AC LOAD
: F-LAMP : COMMON LINE(N)
: COMP : HEATER COMMON OPEN
: COMMON LINE(L)
: F-DEF-HEATER
CN71 - AC LOAD
OPEN : R-LAMP OPEN
: F-FAN signal input volt :
TD-SM (08'전자식)-0328 2008.4.2 8:41 AM 페이지76
Trang 78 CIRCUIT DIAGRAM
8-1) BLOCK DIAGRAM
TD-SM (08'전자식)-0328 2008.4.2 8:41 AM 페이지78
Trang 8CIRCUIT DIAGRAM
8-2) CIRCUIT DIAGRAM
TD-SM (08'전자식)-0328 2008.4.2 8:41 AM 페이지79
Trang 94 SELF DIAGNOSIS & TROUBLE SHOOTING
Trang 10SELF DIAGNOSIS & TROUBLE SHOOTING
4-1-1 TEST (FORCED OPERATION / FORCED DEFROST)
When pressing the Fridge button and the Super freeze button on PANEL DISPLAY
simultaneously for more than 8sec, PANEL DISPLAY will be turned off and it is in TEST MODE At
this point, the Freezer and the Fridge buttons, the Super freeze button, and the Vacation button can bepressed and it becomes the TEST button
When pressing TEST buttonnnn, Test function shall be in order Forced Operation Forced F Defrost Cancellation (normal operation) Forced Operation.
To cancel TEST function, turn off the power and turn it on again
Press for 8 sec
4) In forced operation, Freezer will be selected to “MAX -25 and Fridge will be set to “1 automatically.However, if Forced Defrost or Test Cancellation is selected after a minute while in forced operation, themax set temp will not change (Maintaining “MAX -25 and “1 ) If forced defrost or test cancellationare selected within a minute while in forced run operation, the set temp will go back to the previoussetting
5) On the completion of Forced Run (24 hr.), F Defrost shall be activated regardless of the previous state.6) After the above items are satisfied, it operates under normal defrosting conditions by sensing ambienttemp and compressor run time
7) During forced operation, Super Freeze will not function and the selected function, LED will be off after 1 0 sec
2 Forced Defrost
1) When pressing TEST button twice while in TEST MODE, Freezer defrost will operate and beeping soundwill be heard
2) Beeping sound will be heard until the completion of the defrost cycle and then pause
3) With the selection of forced F defrost, it will operate regardless of HEATER ON temp and complete defrostwhile comparing the HEATER OFF temp
3 TEST Cancellation MODE
1) When in TEST MODE and pressing the TEST button once more during F Defrost, F Defrost will becancelled and restored to normal operation Also, if POWER is turned off and on, all the TEST functionswill be canceled
4-1) CHECK POINT BEFORE TROUBLESHOOTING
Trang 11SELF DIAGNOSIS & TROUBLE SHOOTING
4-1-2 SELF-DIAGNOSIS
1 Self-diagnosis with initial POWER ON
1) With POWER ON, the MICOM will internally diagnose the status of the temp SENSOR in a minute.2) If faulty sensor is found after self-diagnosis, corresponding DISPLAY ICON LED will be on/off at aninterval of 0.5 sec There will be no sound when ICON LED will be ON (Refer to the following thedetails of self-diagnosis LED position)
3) IIf a faulty sensor is found and DISPLAY LED is off, it only recognizes self-diagnosis button (PressVacation button + Super freeze button for 8 sec.) Normal temp will be on hold
4) Upon self-diagnosis ERROR, if a faulty sensor is replaced or if you press Vacation button + SuperFreeze button for 8 sec., it will be canceled automatically
2 Self-diagnosis during normal operation
1) When pressing “Vacation button + Super freeze button” simultaneously for 6 sec in normal
operation of the fridge, all LED of DISPLAY will be ON/OFF for 2 sec at intervals of 0.5 sec andwhen pressing “Vacation button + Super Freeze button” simultaneously for 8 sec including
TOGGLE for 2 sec., self-diagnosis will be selected
2) At this point, beeping sound shall be heard and it operates self-diagnosis
3) When self-diagnosis operates, entire LED will be OFF and only relevant LED with malfunction will
be ON / OFF repeatedly signifying defects (Refer to the below self-diagnosis CHECK LIST)4) When an ERROR occurs, it will be indicated for 30 sec and restored to the normal status
regardless of maintenance
5) During self-diagnosis, pressing any buttons will not be recognized
Press for 8 sec
4-1) CHECK POINT BEFORE TROUBLESHOOTING
Trang 12SELF DIAGNOSIS & TROUBLE SHOOTING
Dislodged from Freezer Sensor Housing, contact failure, breakage of wire, short circuit, inferior F-Sensor.
Dislodged from Ambient Sensor Housing, contact failure, breakage of wire, short circuit, inferior ambient sensor.
Dislodged from Damper Heater Housing, contact failure, or breakage of wire.
Dislodged from Fridge Sensor Housing, contact failure, breakage of wire, short circuit, inferior R- Sensor.
TOURBLE SHOOTING
Indicating a defect when the temp sensing of F Defrost Sensor is above +65 or below -50
Indicating a defect when the temp sensing of F-Sensor is above +65 or below -50
Indicating a defect when the temp sensing of Ambient Sensor is above +65 or below - 50
Indicating a defect when sensing is below +2.0V
Indicating a defect when the temp sensing of R-Sensor
is above +65 or below -50
Details of self-diagnosis lighting by position
1) When pressing “Vacation button + Super Freeze button” simultaneously for 6 sec in normaloperation, the indicators of temp set in Freezer/Fridge will all ON/OFF for 2 sec at the interval of0.5 sec At this point, when pressing the Temp button in Fridge while canceling “Vacation button +Super Freeze button”, it operates in load status display
2) Load status display will show the load in operation immediately
However, it does not show the real operating loads It just shows the loads that MICOM orders tooperate
3) Only the correspondent ICON of the load in operation will blink ON/OFF repeatedly
4) Load status display will continue for 30 sec and it will resume to the normal state
4-1-3) LOAD STATUS DISPLAY
4-1) CHECK POINT BEFORE TROUBLESHOOTING
Trang 13SELF DIAGNOSIS & TROUBLE SHOOTING
Press for 8 sec
Details of load status display digit segment will stay on indicating what is in operation at present time.
Trang 14SELF DIAGNOSIS & TROUBLE SHOOTING
4-1-4 OPTION SETTING
Press for 12 sec
1 For example, if you want to set option and SHIFT the standard temp of Freezer to -3 , follow the directionsbelow
This function is to change the standard temp and if the standard temp at present is MID -1 8 in theFreezer, it can be lowered by -3 via using options and the standard temp will be controlled at -2 1 i.e
in case of changing temp option, although you set it at -1 8 on the display panel, the fridge will operate at-2 1 Therefore, when you set the standard temp at -3 , temp will lowered by an additional -3 compared
to what is set on the display panel
1) Press Freezer temp setting button and Super Freeze button simultaneously for 1 2 sec as shown in thepicture
- All DISPLAY will go OFF except for Freezer/Fridge temp indicating DISPLAY
2) After changing into Option Mode, DISPLAY will show "0" for Fridge and "0" for Freezer.
(When shipping products, there shall be "0" for Fridge and "0" for Freezer but for special customer °Øspurpose, the standard setting value can be changed.)
- If "0" for Fridge is indicated, temp option item in Freezer can be set and temp setting value of Freezer atpresent will be shown in temp DISPLAY for Freezer
3) After setting "0" in Fridge and selecting "6" as in the option table of Freezer, the standard temp of Freezer
will be lowered by 3 degree Celsius (Refer to the picture of temp change in Freezer ) : : Ifyou wait for 20 sec after the completion of adjustment, MICOM will store the set value in EEPROM andrestore normal DISPLAY while canceling the option setting mode
4) Option is already set in EEPROM while shipping, do not change it randomly except for special purpose and do not turn off power before restoring to the normal display because the option is completed as long as it can restore to normal display after 20 sec.
note) Basically, when shipping of the products, data is all cleared in the EEPROM
i.e the Set Values are all 0 However, for the purpose of quality while producing, the set values
is altered and manufactured Therefore, make sure to check quality information
4-1) CHECK POINT BEFORE TROUBLESHOOTING
Trang 15SELF DIAGNOSIS & TROUBLE SHOOTING
Example of application) For decreasing the standard temp of Freezer by -3
Super Freeze S/W
Set Value Freezer S/W
Trang 16SELF DIAGNOSIS & TROUBLE SHOOTING
4-1-5 OPTION TABLE
note) When using the temp set button in Freezer and Vacation button, all other options except for theabove mentioned are ALREADY set Those are the items related to the refrigerator control andthey will be omitted (Do not set other options except for those in the above A/S MANUAL
Table for changing temp in Freezer Table for changing temp in Fridge
+0.5 +1.0 +1.5 +2.0 +2.5 +3.0 +3.5 +4.0
TEMP SET VALUE
0 -0.5 -1.0 -1.5 -2.0 -2.5 -3.0 -3.5
8 9 10 11 12 13 14 15
+0.5 +1.0 +1.5 +2.0 +2.5 +3.0 +3.5 +4.0
TEMP SET VALUE
Trang 17SELF DIAGNOSIS & TROUBLE SHOOTING
4-2 Troubleshooting flowchart
Data 1 Temperature table
Resistance and MICOM port voltage of sensor by temperature
Sensor chip: PX41C
Voltage Resistance Voltage Resistance Voltage Resistance
Trang 18SELF DIAGNOSIS & TROUBLE SHOOTING
4-2-1 In case of self diagnosis error
- Sensor error is displayed on the front display of the refrigerator In case of a sensor error at the initial power connection, the refrigerator will not operate and repeatedly display (flash) the sensor part with the error.
- In case of a sensor error during operation, the refrigerator will not top but operate in emergency operation mode and normal cooling operation may not work Check and diagnose the problem by using this self diagnosis function in this manual.
1) R sensor error
Start
Connector contacterror/Reinsert
Replacetemperature sensor
Recheck wireconnecting part
Check for cold soldering, shortcircuit and lead touching(0.6V>Measured value<4.6V)
Is the inserted condition of main PCBconnector CN30 normal?
Is the R sensor item normal?
Is the voltage of main PCB connector CN-30-”7” and “6” normal?
Is the input voltage of IC0 MICOM pin #59 normal?
No error in PCB and temperature sensorRecheck for connector contact defect
Data 1 Temperature table
Resistance measuring location
by sensor R:Measure resistance
between CN30 No 7 and No 6
0 refers to short and refer
to open error.
IC1 MICOM #59 voltage is
the same as CN30-”7” (Gray)
Refer to the circuit diagram
- Compare with temperature table after measurement.
R sensor voltage checking method
- Sensor checkpoint on PCB:Measure voltage of IC01 MICOM #59 or CN30-”7” (Gray) > “6” (Brown)
- Compare with temperature table after measurement Measure voltage of CN30-”7” (Gray) > “6” (Brown) as shown below.
Trang 19SELF DIAGNOSIS & TROUBLE SHOOTING
2) Ambient sensor error
Start
Connector contacterror/Reinsert
Replacetemperature sensor
Recheck wireconnecting part
Check for cold soldering, shortcircuit and lead touching(0.6V>Measured value<4.6V)
Is the inserted condition of main PCB connector CN31 normal?
Is the ambient sensor item normal?
Is the voltage of main PCB connector CN-31-”1”
(White) and CN1-”4” (White) normal?
Is the input voltage of IC0 MICOM pin #63 normal?
No error in PCB and temperature sensorRecheck for connector contact defect
Data 1 Temperature table
Resistance measuring location
by sensor Ambient:Measure
resistance between CN31 No 1
and No 4 0 refers to short and
refer to open error.
IC1 MICOM #63 voltage is the
- Compare with temperature table after measurement.
Ambient sensor voltage checking method
- Sensor checkpoint on PCB: Measure voltage of IC01 MICOM #63
or CN31-”1” (White) > “4” (White)
- Compare with temperature table after measurement Measure voltage of CN31-”1” (White) > “4” (White) as shown below.