2-10
"FILE CHECK" Display?
YES
YES
IC501(4, 5, 7, 9, 12, 44, 49, 51, 74, 77, 81,
102, 104, 116, 117)
NO
Checked the CD
DSP GND?
YES
IC401(42), R425
NO
Checked the USB
interface IC reset?
YES
X502
NO
Checked the
DSP X-tal?
IC401(26, 27, 28, 60)
NO
Checked the
DSP control?
YES
5A
USB no sound?
OK
YES
IC501(52, 53)
NO
Checked the CD
DSP signal out?
YES
5B
OK
Summary of Contents for MAX220UB
Page 27: ...2 18 ...
Page 35: ...PRINTED CIRCUIT BOARD DIAGRAMS 1 MAIN P C BOARD 2 33 2 34 TOP VIEW BOTTOM VIEW ...
Page 36: ...2 FRONT P C BOARD 2 35 2 36 TOP VIEW BOTTOM VIEW ...
Page 37: ...2 37 2 38 ...
Page 39: ...3 3 3 4 ...