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Hitachi MB-6890 Service Manual page 50

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Fig.
5-5
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gf,
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FreqØency)
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Frequency)
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(8Och,
Frequency)
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=
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(4Och,
tv..
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1:
1.
=1.008MHz
(MPU
Operation
0
fr;
f m - : x r 1 . = 4 . 0 3 2 M H 1 ( M P U
Operation
(Horizontal
o
f,,=15_75KH2
Synohronise
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U
/v
=60Hz
§ § 3 § a i
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IC37
74S04P
74S163N
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Fig.
5-5
All manuals and user guides at all-guides.com
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orizontal
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Character
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Character
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Clock
Frequency)
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Frequency)
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circuit
Clock
generator
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Level
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RAM
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Connector
Expansion
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perio
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ay
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Signals
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Generation

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