Hitachi C21-FL21F User Manual

NOTE : To ensure the safety of customer, special protection circuitry is added to avoid failures due to abnormal
commercial input voltage from power line which excess the maximum operation range of AC 264V.
The special protection circuitry activate approximately at AC 300V by cutting off main fuse F901.
Hence to prevent serious failures, such as smoke, fire etc…
CAUTION :
Before servicing this chassis, it is important that the service techician reads the " Safety Precaution "
and " Product Safety Notices " in this Service Manual.
* Enclosed with Circuit Diagram and Printed Wiring Board.
CONTENTS
SAFETY PRECAUTIONS ...………………………………………………………………
2
PRODUCT SAFETY NOTICE …………...……………………………………………….
2
REMOTE CONTROL UNIT ………………………………………………………………
3
GENERAL OPERATIONS GUIDE .……………………………………………………….
4
FAILURE DETECTING FUNCTION OF MAIN DEVICES ………………….…………..
5
CIRCUIT DESCRIPTION …………………………………………………………… 6 - 1
0
ADJUSTMENT INSTRUCTIONS …………………………………………………. 11 - 1
9
REPLACEMENT PARTS LIST …………………………………………………….. 20 - 31
MARCH 2002 Hitachi Consumer Products ( THAILAND ) , Ltd.
SERVICE MANUAL
HITACHI
COLOR TELEVISION
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT.
HCPT
No. 006E
V3AR Chassis

Hitachi C21-FL21F Specifications

General

Brand	Hitachi
Model	C21-FL21F
Category	TV
Language	English

Summary

CONTROLS

FRONT PANEL

Describes the controls located on the television's front panel.

SAFETY PRECAUTIONS

INSULATION

Specifies insulation resistance and dielectric strength requirements for safety.

HIGH VOLTAGE

Covers safe handling and limits for high voltage components and X-radiation.

PRODUCT SAFETY NOTICE

Alerts users to critical safety components and potential hazards.

REMOTE CONTROL UNIT

FOR OTHER MODELS

Details the remote control button layout and functions for standard models.

FOR T/TEXT MODELS ONLY

Details remote control buttons specific to Teletext-enabled models.

GENERAL OPERATIONS GUIDE

FAILURE DETECTING FUNCTION OF MAIN DEVICES

CIRCUIT DESCRIPTION

Selection and CPU circuitry

Explains the functions of the main CPU IC and its pin configurations.

Tuner and IF

Details the operation and circuitry of the TV tuner and Intermediate Frequency stages.

POWER SUPPLY CIRCUIT

ADJUSTMENT INSTRUCTIONS

IIC ADJUSTMENTS

Guides the user through adjusting various TV parameters using the IIC bus.

SHIPPING DATA OF IIC SERVICE MODE

+B ADJUSTMENT

VERTICAL CENTER ADJUSTMENT

Adjusting the vertical position of the displayed image.

VERTICAL SIZE ADJUSTMENT

Adjusting the vertical height of the displayed image.

VERTICAL SLOPE ADJUSTMENT

HORIZONTAL PHASE ADJUSTMENT

Adjusts the horizontal alignment and timing of the picture.

WHITE BALANCE ADJUSTMENT

SUB-TINT ADJUSTMENT

Adjusts the hue or tint of the colors in the picture.

SUB-BRIGHTNESS ADJUSTMENT

Fine-tunes the brightness levels for different picture segments.

REPLACEMENT PARTS LIST