TROUBLESHOOTING GUIDE
POWER DOES NOT TURN ON
No |
| Is F501 broken ? | Yes | |
Does DISPLAY light ? |
|
| ||
Yes |
| No |
| |
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| Is | the voltage at collec |
| Yes |
| tor | |||
| of | Q507 about 5.6V ? |
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| No |
| |
Replace F501.
Check IC1002.
Is the voltage at pin 20 of IC1002 about 5V ?
Yes
Is the voltage at base of Q502 about 5V ?
Yes
Replace Q502.
Check the peripheral circuit to pin 14 of T501.
No
No
Check IC1002.
Replace Q510.
