4-12
Samsung Electronics
Troubleshooting
4-1-4 LCD Defect
Does the
3 colors LED turn on but operate
irregularly?
Replace BOARD
(Requires close inspection)
No
Yes
Power On
Does the 3 color LED
not turn on at all?
No
Yes
Is the LED element
cold soldered? (LED1)
Yes
Update the firmware
and recheck
Add solder to LED and recheck
Does the green not turn on?
No
Yes
Is the green LED
TR/resistance cold soldered?
(R2, Q2)
No
No
Yes
Add solder to green LED
element and recheck
Does the blue not turn on?
No
Yes
Is the blue LED
TR/resistance cold soldered?
(R3, Q3)
No
Yes
Add solder to blue LED
element and recheck
Yes
Is the red LED
TR/resistance cold soldered?
(R1, Q1)
No
Yes
Add solder to red LED
element and recheck
Does the red not turn on?
Refer to wave pattern
image of Fig. 4-7.
Refer to wave pattern
image of Fig. 4-7.
Refer to wave pattern
image of Fig. 4-7.
Refer to wave pattern
image of Fig. 4-7.
Summary of Contents for YEPP YP-S2
Page 11: ...2 6 Samsung Electronics MEMO ...
Page 19: ...4 6 Samsung Electronics Troubleshooting MAIN Page 7 3 IC9 PCB Bottom Page 6 4 Fig 4 3 4 4 4 ...
Page 20: ...Samsung Electronics 4 7 Troubleshooting MAIN Page 7 3 IC8 PCB Top Page 6 2 Fig 4 4 5 5 5 ...
Page 21: ...4 8 Samsung Electronics Troubleshooting MAIN Page 7 3 1 IC9 PCB Bottom Page 6 4 Fig 4 5 6 6 6 ...
Page 37: ...5 6 Samsung Electronics MEMO ...
Page 38: ...Samsung Electronics 6 1 PCB Diagram 6 PCB Diagram 6 1 PCB Top 6 2 6 2 PCB Bottom 6 4 ...
Page 39: ...6 2 Samsung Electronics PCB Diagram 6 1 PCB Top 1 TP5 1 24MHz Crystal IC8 ...
Page 40: ...Samsung Electronics 6 3 PCB Diagram 6 1 1 Test Point Wave Form TP5 ...
Page 43: ...6 6 Samsung Electronics MEMO ...
Page 47: ...7 4 Samsung Electronics MEMO ...
