13. USB PART
YES
NO
NO
YES
YES
YES
Turn on USB
Check CN401
Check CN401 pin2 5V
Check U502 pin55, 57
Check power supply circuit USB +5V
Check CN401 pin3, 4 (D+, D-)
Check U503 pin3, 4
Check
μ
-COM IC603
pin116, 117 (D+, D-)
Check
μ
-COM IC603
pin116, 117 (D+, D-)
NO
NO
NO
NO
NO
NO
Check "CHECKING"
or "USB" display
Check reading OK
If play, check audio output
OK
3-12
ELECTRICAL TROUBLESHOOTING GUIDE
Содержание XA66
Страница 11: ...2 2 MEMO ...
Страница 13: ...2 5 2 6 MEMO MEMO ...
Страница 15: ...2 8 A60 3 SPEAKER SECTION XAS66F ...
Страница 33: ...3 18 MEMO ...
Страница 35: ...3 21 3 22 BLOCK DIAGRAMS 1 MAIN BLOCK DIAGRAM 7UDQVIRUPHU 7UDQVIRUPHU ...
Страница 45: ...3 41 3 42 PRINTED CIRCUIT BOARD DIAGRAMS 1 MAIN P C BOARD TOP VIEW BOTTOM VIEW ...
Страница 46: ...3 43 3 44 2 SMPS P C BOARD 3 MCU P C BOARD TOP VIEW BOTTOM VIEW ...
Страница 47: ...3 45 3 46 4 KEY P C BOARD 5 FRONT P C BOARD 6 EARPHONE P C BOARD ...