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NO POWER
(POWER INDICATOR OFF)
1
CHECK J301 Voltage
Pin #12,#2 : 24V
U313 IC
Pin #13 : 24V
Check U317 Pin #3 : 3.3V
2
Check U304 Pin #3 : 2.5V
3
Check X401 : 14.318Mhz
Check Key Board
Waveforms
1
J301-#12,2(24V)
TROUBLESHOOTING GUIDE
1. NO POWER
YES
YES
YES
YES
2 U317-#3(3.3V)
NO
NO
NO
NO
3 X401(14.318Mhz)
- 13 -
Check Adaptor Jack Board
Change DC-DC Converter IC
(U313)
Check Crack of Damage
Of Circuit Item
Around U317,U304
Check U401
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