Hitachi I-28 Service Manual
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Hitachi I-28 Service Manual

Hitachi I-28 Service Manual

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CONTENTS
SPECIFICATIONS).
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1
SAFETY
PRECAUTIONS
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2
BLOCK
DIAGRAM
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vowel,
9
INTRODUCTION
OF
NEW
PRODUCT
3
CONTROL.
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3
DESCRIPTION
OF
CIRCUIT
— crccecsssseteceetterserseersseneeees
4
GENERAL
ALIGNMENT
INSTRUCTIONS © -e-
9
PRINTED
CIRCUIT
BOARD __ wrrsssssesssessseestestesesseens
12
BASIC
CIRCUIT
SCHEMATIC
DIAGRAM
| esses
13
REPLACEMENT
PARTS
LIST
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14
SPECIFICATION
FREQUENCY
RANGE
VHE Channels vrrrsceeseeeesesesesesecsteesseeesees
54MHz ~ 88MHz
174MHz
~ 216MHz
UHF
Channels
Db ce wedessednsuadndcasctsasecevesseecd caduaen
470MHz
~
890MHz
INTERMEDIATE
FREQUENCIES
Picture [.F. Carrier sess rseeeessesesesereeeeeeees
45.75MHz
Sound U.F. Carrier cccesseeseeesesseesteerererees
41.25MHz
POWER
INPUT
cvvccescscsssesesesesesesesseeseseseeees
AC 120V
60Hz
DC 12V Battery, Car battery
POWER
RATING
crvcesrrsecesesesesesereseeeeseeeees
DC 12W
AC 25W
AUDIO
POWER
OUTPUT
--eeseeeeeseeeres
0.5W
VIDEO
RESPONSE
© «++
3.0MHz
SWEEP
DEFLECTION
=------
Magnetic
FOCUS crvessesesssseeesseseeessceeenenenenseneaeseenees
Electrostatic
ANTENNA
INPUT
IMPEDANCE
..-----------
VHF 300QBalanced
UHF 30022Balanced
PICTURE
TUBE.
ov-vscssscsescssseesssereesseeeeeenenes
SAGP4
TRANSISTOR.
------
7
IG:
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6
DIODES»
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11
CABINET
DIMENSIONS
11-15/16"(W) x8-3/8''(H) x9-5/8"(D)
WEIGHT seieseseechettentectenscenrecdeinlasiintared
11. Ibs
/LLe TRANSISTOR
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