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RF PATTERN TESTING
NAD - C 565BEE PCB TESTING POINTS DIAGRAM
TESTING PROCEDURE
(1) Load the test disc (Sony Test CD YEDS-7) and set the unit into PLAY mode.
(2) Connect the scope to C7 (Pin 81 of IC1) and DGND (C32).
Scope setting: Coupling : AC.
Vertical sensitivity : 0.2 V/ div.
Horizontal time base : 0.5 μS/div.
(3) Observe the waveform is 1.5V p-p +/-5% and the eye pattern is at its best shape (see
FIG. 1
).
FIG. 1 (a)
FIG. 1 (b) Poor eye pattern
FIG. 1 (C) Good eye pattern
3T 4T 5T – 11T
Test Point
Содержание C565BEE
Страница 1: ...NAD C 565BEE COMPACT DISC PLAYER C 565BEE COMPACT DISC PLAYER SERVICE MANUAL ...
Страница 13: ... 13 NOTES ...
Страница 14: ... 14 PCB LAYOUT MAIN BOARD top side ...
Страница 15: ... 15 MAIN BOARD bottom side ...
Страница 17: ... 17 SERVO BOARD bottom side top side ...
Страница 30: ... 30 SERVO BOARD IC1 DSP TC94A73MFG ...
Страница 33: ... 33 SERVO BOARD U2 MOTOR DRV W 3 3V REG ...
Страница 34: ... 34 TROUBLESHOOTING GUIDE ...
Страница 51: ... 51 MECHANISM EXPLODED VIEW DA11VZ ...