4-2. How to Check Fault Symptom
NO Power
*Refer to the next page to check the location such a CN201 or IC1001 SVC Manual mentioned.
Symptom
The LEDs on The front panel do not work when connecting The power cord.
•
The SMPS relay does not work when connecting The power cord.
•
The units appears to be dead.
•
Major
checkpoints
The SMPS relay or the LEDs on the front panel does not work when connecting the power cord if the cables are
improperly connected or the Main Board or SMPS is not functioning. In this case, check the following:
Check the internal cable connection status inside the unit.
•
Check the fuses of each part.
•
Check the output voltage of SMPS.
•
Replace the Main Board.
•
Diagnostics
Power indicator LED is on?
No
Check a connetion power code.
Yes
Check ‘Stand-By A5.3V’ 5.3V appear at
BD207?
0V to 5.3V (CN201 #4)
No
Change the Power cable.
Change SMPS.
Yes
Set On.
Yes
Check ‘SW_POWER’ more than 3.3V
appear at CN201(#2) ?
0V to 3.3V↑ (CN201 #2)
No
Cause
: Main IC(X10+) did not control
the SW_Power.
Measure
: Change the Main Assy.
Yes
Check ‘Power input of Main Ass’y’ ?
DC B13V, B5.3V appear at CN201
#11,12,13(B13V) CN201 #1,3 (B5.3V)?
0V to 13V (CN201 #11,12,13)0V to 5.3V
(CN201 #1,3)
No
Cause
: There did not supply the
power from SMPS.
Measure
: Change 20p/14p power
cable and SMPS.
Yes
Check ‘Power IC output of Main Ass’y’ ?
L202 : B3.3V / L203 : B1.15V
L201 : B5V / IC208 : 3.3V
No
Cause
: There is problem at DCDC/
LDO.
Measure
: Change the Main Board.
Yes
Check ‘Power of LVDS (13V)’ appear at
TP-PANEL_VCC?
0V to 13V (TP-PANEL_VCC)
No
Cause
: There is proble at FET(Q201)
or Main IC(X9) did not control
the SW_PVCC.
Measure
: Change the Main Board..
4-4
4. Troubleshooting
Содержание UE32EH53series
Страница 65: ...3 6 3 Disassembly and Reassemble Description Picture Description Screws 8 Remove the Middle Cover ...
Страница 89: ...3 30 3 Disassembly and Reassemble Description Picture Description Refer 7 Disassembly is complete ...
Страница 92: ...3 33 3 Disassembly and Reassemble Description Picture Description Refer 4 Assembly is complete ...
Страница 110: ...Location of Parts Main Board_Front B D C A Detail A B C D 4 18 4 Troubleshooting ...
Страница 137: ...UE40ES55 57 58 105 9 154 9 51 2 200 0 200 0 213 1 563 8 130 1 657 9x19 4 157 9x57 3 137 9x34 7 4 45 4 Troubleshooting ...
Страница 139: ...UE50ES55 57 187 0 193 2 85 6 400 0 400 0 133 6 769 8 140 4 158x19 7 158x19 7 178x34 7 137 9x49 7 4 47 4 Troubleshooting ...
Страница 143: ...UE22EH54 511 4 218 2 218 2 171 6 312 0 157 0 58 4 28 4 68 4 75 0 75 0 65 4 4 51 4 Troubleshooting ...
Страница 151: ...17 SMPS BN44 00504A 18 ASSY BOARD P 5WAY SWITCH FUNCTION BN96 22880B 19 WIFI MODULE BN59 01148A 4 59 4 Troubleshooting ...