Measuring Method And Waveforms; Notes; Measuring Disc; Gu-3494 Main P.w.b. Unit Foil Side - Denon DVD-2900 Service Manual

MEASURING METHOD AND WAVEFORMS

QQ
3 7 63 1515 0
To check the waveforms on the Main P.W.B., the GND (-)
probe of the oscilloscope to "Vref" point.

NOTES

Measuring Disc: DVD/DVDT-S01 or TDV-520A
CD/TCD-784
(It is better to use wires for extending between the probe and
test points.)
• When watching the HF waveform, use the extending wire
as short as possible.
• When HF waveform is noisy or cannot discriminate the
eye-pattern, replace the Traverse Unit after measuring the
lop.
• ~ points have the certain test points shown below.
TE
L 13942296513
VC16
(Vref)
10
3
13
7
12
www
14
.
http://www.xiaoyu163.com
8
x ao
y
15 11
i

GU-3494 Main P.W.B. Unit Foil Side

http://www.xiaoyu163.com
8
5 9 4
Q Q
3 6 7 1 3
u163
17 16 6
.
DVD-2900
2 9 9 4 2 8
1 5 0 5 8 2 9 9 4
m
co
2 1
108
9 9
2 8 9 9