Sony HCD-C990 Service Manual - Page 75
VIDEO Board, AUDIO Board, FL Board, DDCON Board
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HCD-C770/C990 - AUDIO Board - ua IC201 qf (X0) - VIDEO Board - ya IC208 qk, ql (CrOUT) (NTSC Color Bars Play) - DDCON Board - os Q803, 804 (Collector) 3.4 Vp-p 1.4 Vp-p 18.6 Vp-p 231 ns H ys IC208 wa, ws (CbOUT) (NTSC Color Bars Play) 9.1 µs 1.4 Vp-p H yd IC208 wf, wg (CYOUT), wj, wk (YOUT) (NTSC Color Bars Play) - FL Board - oa IC802 tk (OSCO) 2.1 Vp-p 2.2 Vp-p H yf IC208 e;, ea (VOUT) (NTSC Color Bars Play) 504 ns 2.5 Vp-p H yg IC208 ed(COUT) (NTSC Color Bars Play) 1.7 Vp-p H 75
![](/manual_guide/products/sony-hcdc990-service-manual-d43b35f/75.png)
75
HCD-C770/C990
1.4 Vp-p
H
1.4 Vp-p
H
ys
IC208
wa
,
ws
(CbOUT) (NTSC Color Bars Play)
– VIDEO Board –
ya
IC208
qk
,
ql
(CrOUT)
(NTSC Color Bars Play)
2.1 Vp-p
H
yd
IC208
wf
,
wg
(CYOUT),
wj
,
wk
(YOUT)
(NTSC Color Bars Play)
2.5 Vp-p
H
yf
IC208
e;
,
ea
(VOUT) (NTSC Color Bars Play)
1.7 Vp-p
H
yg
IC208
ed
(COUT) (NTSC Color Bars Play)
3.4 Vp-p
231 ns
– AUDIO Board –
ua
IC201
qf
(X0)
2.2 Vp-p
504 ns
– FL Board –
oa
IC802
tk
(OSCO)
18.6 Vp-p
9.1
μ
s
– DDCON Board –
os
Q803, 804 (Collector)