TROUBLESHOOTING GUIDE | Appendix |
2. NO PICTURE
Check The Waveform of TU101 IF PIN
NG : Go To The Figure (A)
OK : Go To The Figure (B)
(A) |
|
|
|
|
|
|
|
| TU101 |
|
| 33V |
|
|
| TUNER |
|
| CHECK | |
|
|
|
|
|
| THE |
|
| IF |
|
| 5V | VOLTAGE |
|
|
|
|
|
| |
CHECK |
|
|
|
|
|
|
CLOCK,DATA |
| Z101 |
|
|
| CHECK THE |
|
|
|
|
| ||
SCL/SD | SAW FILTER |
| VOLTAGE | |||
|
|
|
|
| ||
| #7,8 | #22,43,45,63,80 |
| 5V | ||
|
|
| ||||
|
|
|
|
| ||
|
| I701 |
|
|
|
|
| #18,19 |
| #9,16,86,88 |
| 3.3V | |
|
|
|
|
| ||
CHECK THE |
| X701 |
|
|
|
|
CRYSTAL |
|
|
|
|
| |
| 24.576MHz |
|
| |||
|
|
|
| |||
(B) |
|
|
|
|
|
|
CHECK THE |
|
|
|
|
|
|
HOUT |
|
|
|
|
|
|
| #73 |
|
|
|
|
|
CHECK THE | #83,84,85 | I701 |
|
|
|
|
RGB OUT |
|
|
|
| ||
|
|
|
| CHECK THE | ||
|
|
|
|
| ||
5V | #22,43,45,63,80 |
|
| HEATER | ||
|
| VOLTAGE | ||||
3.3V | #9,16,86,88 |
|
| D405 |
|
|
CHECK THE |
| D406 |
|
|
| |
|
|
|
|
|
| |
VOLTAGE |
|
|
|
| T402 |
|
|
| CHECK THE |
|
| ||
|
|
| FBT |
| ||
|
| 190V LINE |
|
|
| |
|
|
|
|
|
| |
|
|
|
|
|
| |
