NEC MultiSync 3D JC-1404HME Service Manual page 65

. ,l l . . ; . , ' ~ ·.·' : ' :
",.·
(2-5-2) H. F /V Converter
1. BLOCK DIAGRAM
SUBUNIT
IC151
µPD78C11
IC152
µPD6336C
R177
10K 1%
H.SYNC
V.SYNC
D/A
R184
rJr-1 OK
(Fig. 2-5-5) BLOCK DIAGRAM of H. F/V Converter
2. Relationship between voltage and horizontal frequency
~
I-
:::,
Cl.
I-
:::,
0
~j:s=rs:
>
1 5 20 25
I
30 35 40
I
H. FREQ. (kHz)
(Fig. 2-5-6)
Relationship between Points
®
and@
H; t55V)
l
I
I
I
I
! '
Lo(0V)
I
>
15 20 25 30
35 40
H. FR EO. (kHz)
(Fig. 2-5-6) Relationship between Point
@
and H. Frequency
15
G
10
I-
::,
Cl.
1-
6
5
20 25 30
35
40
H.FREO (kHz)
(Fig. 2-5-7) H. F/V Output (Point
©)
-64-
©
H. F/V
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