Hitachi C21-RF80S - 21" CRT TV User manual

SERVICE MANUAL
PAL/SECAM/NTSC
CAUTION: Before servicing this chassis, it is important that the
service technician read the Important Safety Note
in this Service Manual.
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
COLOUR TELEVISION
OCT 2003 Digital Media System Group, Hitachi Asia Ltd.
SC Number : 0009E
3P31 Chassis
" "
C21-RF80S/SN/SNT
Destination Code
O81 O51 751
19* 201 433
98* 121

-3--3-
TECHNICAL SPECIFICATION

-4-
TECHNICAL SPECIFICATION

-5-
E
CHASSIS BLOCK DIAGRAM

-6-
IC 121 (Universal HI-FI Audio Processor) TDA9859
IC BLOCK DIAGRAM
IC 161 TDA8944J(BTL Audio Amplifier)

-7-
IC 401 (Vertical Deflection Booster) STV9302A
IC BLOCK DIAGRAM

-8-
IC 601 (Power Switch) KA5Q0765RTH
IC 501(Video Output Amplifier) TDA6107Q
IC BLOCK DIAGRAM
7

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1
INPUT
2
OUTPUT
SERIES
PASS
ELEMENT
SOA
PROTECTION
REFERENCE
VOLTAGE
ERROR
AMPLIFIER
THERRMAL
PROTECTION
STARTING
CIRCUIT
CURRENT
GENERATOR
REFERENCE
VOLTAGE
3
GND
IC 653 & IC 181& IC 652 (Regulators) L7800 Series
1
23
4
1:ANODE
2:CATHODE
3:EMITTER
4:COLLECTOR
IC 602 (Photo Transistor ) TLP621
IC BLOCK DIAGRAM
TLP621

-10-
IC 701 ( TDA93XXPS/N2/5ITV Signal Processor-Teletext )
IC BLOCK DIAGRAM