mitsubishi hs-u778 free download

File name HS-U778_Service_Manual.pdf

2002 MITSUBISHI VIDEO CASSETTE RECORDER MODEL HS-U778 Only cassettes marked S-VHS or VHS can be used with this video cassette recorder. SPECIFICATIONS Tape Format Power Source Power Consumption Video Signal System Video Recording System Luminance Color Signal Hi-Fi Audio Recording System Linear Audio Track Tape Speed Record/Playback Time : S-VHS/VHS 1/2" high-density video cassette tape : 120V AC ; 60 Hz : Approx. 25 W : EIA standard ; NTSC color : S-VHS standard : Frequency modulation recording : Low frequency conversion sub-carrier phase shift recording : VHS standard Azimuth helical scanning system : 1 track : 1-5/16 i.p.s (standard play) 7/16 i.p.s (extended play) : 120min. with T-120 video cassette (SP mode) 360min. with T-120 video cassette (EP mode) : 4 rotary heads : 2 rotary heads : 1 stationary head : 1 full track head : 0.5 to 2.0 V(p-p), 75 unbalanced RCA pin Jack Audio Input : 346 mV(rms), 47 k unbalanced RCA pin Jack Video Output : 1.0 V(p-p), 75 unbalanced RCA pin Jack Audio Output : 346 mV(rms), 1 k unbalanced RCA pin Jack Tuner VHF : 54~88 MHz, 174~216 MHz UHF : 470~806 MHz CATV : 54~88 MHz, 90~804 MHz Operating Temperature : 41 °F to 104 °F Relative Humidity : 30 % to 80 % RF Channel Output : Channel 3 or 4 switchable Weight : Approx. 8.4 lbs Dimensions : 16.7"(W) Ч 3.7"(H) Ч 11.8"(D) Timer Program Capacity : 1 month programmable / 8 programs : Deck Deck Video Input Heads: Video Hi-Fi Audio Audio/Control Erase · Weight and dimensions shown are approximate. · Design and specifications are subject to change without notice. MITSUBISHI DIGITAL ELECTRONICS AMERICA, INC. 9351 Jeronimo Ave. Irvine, California 92618 U.S.A. Copyright C 2002 Mitsubishi Digital Electronics America, Inc. All Rights Reserved. CONTENTS ­ FILE "COVERPGE" ­ SPECIFICATIONS ...1 CONTENTS...2 GLOSSARY OF ABBREVIATIONS ...4 ­ FILE "DISASSY" ­ SAFETY PRECAUTIONS ...1 CONNECTION ...3 DISASSEMBLY ...4 HOW TO EXECUTE CIRCUIT BOARD SERVICE ...7 CHIP PARTS REPLACEMENT ...9 ­ FILE "ELCTADJ" ­ HOW TO INITIALIZE THE E2PROM ...1 WHEN REPLACING IC5A0 ...1 ELECTRICAL ADJUSTMENTS...1 Servo circuit Adjustment...2 Y/C signal circuit Adjustment...2 ­ FILE "MECHAADJ" ­ MECHANICAL ADJUSTMENT AND REPLACEMENT ...1 1. DECK Cleaning...1 1-1 VIDEO HEAD ...1 1-2 Tape Running System...1 1-