MITSUBISHI HSHD1100U Service Manual

MITSUBISHI HSHD1100U Service Manual
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Service Manual for MITSUBISHI HSHD1100U, downloadable as a PDF file.

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SPECIFICATIONS

Tape Format

Power Source

Power Consumption

Video Signal System

Video Recording System

Luminance

Color Signal

Hi-Fi Audio

Recording System

Linear Audio Track

Maximum Recording Time

D-VHS

VHS

Record/Playback System

Video

Audio

Digital

Rewind Time

Video Input

Audio Input

Video Output

Audio Output

Digital Interface

Input/Output

Tuner

VHF

UHF

CATV

Operating Temperature

Relative Humidity

RF Channel Output

Weight

Dimensions

Timer Program Capacity

Memory Backup Time

Deck

: VHS NTSC standard with Hi-Fi

audio and D-VHS standard

: 120 V AC ; 60 Hz

: Approx. 25 W (standby 6.0 W)

: EIA standard ; NTSC color

: VHS standard/D-VHS standard

: Frequency modulation recording

: Low frequency conversion

sub-carrier phase shift recording

: VHS standard

Azimuth helical scanning system

: 1 track

: 150 min. with DF-300 video cassette (HS)

300 min. with DF-300 video cassette (STD)

: 120 min. with T-120 video cassette (SP)

360 min. with T-120 video cassette (EP)

: 4 heads

: 2 Hi-Fi channels and 1 monoral audio control

: HS 4 heads

STD 2 heads

: Approx. 43 seconds for T-120 cassette

: 0.5 to 2.0 V(p-p), 75

unbalanced RCA pin Jack

: 346 mV(rms), 47 k

unbalanced RCA pin Jack

: 1.0 V(p-p), 75

unbalanced

RCA pin Jack

: 346 mV(rms), 1 k

unbalanced

RCA pin Jack

: based on IEEE 1394 digital

interface, 4 pin, corresponds to S400

: 54 to 88 MHz, 174 to 216 MHz

: 470 to 806 MHz

: 54 to 88 MHz, 90 to 804 MHz

: 41 °F to 104 °F

: 30 % to 80 %

: Channel 3 or 4 switchable

: Approx. 9.5 lbs (4.3 kg)

: 16.7"(W)

× 3.7"(H) × 12.0"(D)

: 1 month programmable

/ 16 programs

: Approx. 30 minutes

Deck

· Weight and dimensions shown are approximate.

· Design and specifications are subject to change without notice.

Only cassettes marked D-VHS or VHS can be used with this video cassette recorder.

MITSUBISHI

2002

VIDEO CASSETTE RECORDER

MITSUBISHI DIGITAL ELECTRONICS AMERICA, INC.

9351 Jeronimo Ave. Irvine, California 92618 U.S.A.

MODEL

HS-HD1100U

SPECIFICATIONS

Tape Format

Power Source

Power Consumption

Video Signal System

Video Recording System

Luminance

Color Signal

Hi-Fi Audio

Recording System

Linear Audio Track

Maximum Recording Time

D-VHS

VHS

Record/Playback System

Video

Audio

Digital

Rewind Time

Video Input

Audio Input

Video Output

Audio Output

Digital Interface

Input/Output

Tuner

VHF

UHF

CATV

Operating Temperature

Relative Humidity

RF Channel Output

Weight

Dimensions

Timer Program Capacity

Memory Backup Time

Deck

: VHS NTSC standard with Hi-Fi

audio and D-VHS standard

: 120 V AC ; 60 Hz

: Approx. 25 W (standby 6.0 W)

: EIA standard ; NTSC color

: VHS standard/D-VHS standard

: Frequency modulation recording

: Low frequency conversion

sub-carrier phase shift recording

: VHS standard

Azimuth helical scanning system

: 1 track

: 150 min. with DF-300 video cassette (HS)

300 min. with DF-300 video cassette (STD)

: 120 min. with T-120 video cassette (SP)

360 min. with T-120 video cassette (EP)

: 4 heads

: 2 Hi-Fi channels and 1 monoral audio control

: HS 4 heads

STD 2 heads

: Approx. 43 seconds for T-120 cassette

: 0.5 to 2.0 V(p-p), 75

unbalanced RCA pin Jack

: 346 mV(rms), 47 k

unbalanced RCA pin Jack

: 1.0 V(p-p), 75

unbalanced

RCA pin Jack

: 346 mV(rms), 1 k

unbalanced

RCA pin Jack

: based on IEEE 1394 digital

interface, 4 pin, corresponds to S400

: 54 to 88 MHz, 174 to 216 MHz

: 470 to 806 MHz

: 54 to 88 MHz, 90 to 804 MHz

: 41 °F to 104 °F

: 30 % to 80 %

: Channel 3 or 4 switchable

: Approx. 9.5 lbs (4.3 kg)

: 16.7"(W)

× 3.7"(H) × 12.0"(D)

: 1 month programmable

/ 16 programs

: Approx. 30 minutes

Deck

· Weight and dimensions shown are approximate.

· Design and specifications are subject to change without notice.

Only cassettes marked D-VHS or VHS can be used with this video cassette recorder.

MITSUBISHI

2002

VIDEO CASSETTE RECORDER

MITSUBISHI DIGITAL ELECTRONICS AMERICA, INC.

9351 Jeronimo Ave. Irvine, California 92618 U.S.A.

MODEL

HS-HD1100U

- 2 -

CONTENTS

SPECIFICATIONS ...........................................................1

CONTENTS......................................................................2

GLOSSARY OF ABBREVIATIONS ................................4

SAFETY PRECAUTIONS ................................................1

CONNECTION .................................................................3

WARNING........................................................................3

DISASSEMBLY ...............................................................4

HOW TO EXECUTE CIRCUIT BOARD SERVICE ..........7

CHIP PARTS REPLACEMENT .....................................11

HOW TO INITIALIZE THE E2PROM ................................1

WHEN REPLACING IC5A0 .............................................1

ELECTRICAL ADJUSTMENTS.......................................1

Servo circuit Adjustment...............................................3

D-VHS signal circuit Adjustment ..................................4

MECHANICAL ADJUSTMENT

AND REPLACEMENT ..............................1

DECK Cleaning...................................................1

1-1

VIDEO HEAD .................................................1

1-2

Tape Running System....................................1

1-3

REEL DISK Drive System ..............................1

Replacement of Major Parts ..............................2

2-1

CLEANING ARM, FELT RING ......................2

2-2

STAY PLATE.................................................2

2-3

BOTTOM ASSY.............................................3

2-4

INSERT GUIDE (TU).....................................4

2-5

INSERT GUIDE (SP).....................................4

2-6

REC HOLDER, REC LEVER,

REC SPRING ................................................5

2-7

F/L ARM ASSY, F/L BEARING .....................5

2-8

A/C HEAD UNIT ............................................6

2-9

F/E HEAD UNIT.............................................6

2-10 SENSOR COVER (TU) .................................7

2-11 SENSOR COVER (SP) .................................7

2-12 REV UNIT (TU),

REV UNIT (SP)..............................................8

2-13 MODE POSITION UNIT ................................8

2-14 REEL BELT, PULLEY BUSH,

THRUST WASHER,

BELT PULLEY, SHIFT SLIDER,

PULLEY GEAR ASSY, SLIP GEAR,

SLIP SPRING, THRUST WASHER,

SLIP WASHER, SLIP ADJUSTER,

IDLER 2 UNIT................................................9

2-15. CAPSTAN BRAKE SPRING,

CAPSTAN BRAKE ASSY............................11

2-16 FC HOLDER, MOTOR HOLDER,

LOADING WORM,

LOADING MOTOR ASSY,

WORM WHEEL ...........................................12

2-17 PINCH ARM CAP, PINCH UNIT .................13

2-18 F/L PLATE, DOOR ARM .............................13

2-19 BRAKE CAM PLATE ...................................14

2-20 GUIDE LAMP ..............................................15

2-21 MAIN CAM, GUIDE ARM (TU),

BRAKE LEVER............................................16

2-22 L/D LOCK LEVER .......................................17

2-23 BRAKE BELT (SP), BELT HOLDER ...........17

2-24 BELT LEVER, BELT ADJUSTER................18

2-25 TENSION ARM, TENSION LEVER,

TENSION SPRING, TENS AXIS HOLDER,

REEL DISK (SP side) ..................................18

2-26 BRAKE BELT (TU) ......................................19

2-27 BRAKE (TU), REEL DISK (TU side)............19

2-28 SHIFT LEVER .............................................20

2-29 CHARGE SPRING, SWING LEVER,

CHARGE ASSY...........................................21

2-30 LOADING ARM ASSY (SP),

LOADING ARM ASSY (TU).........................21

2-31 A/L LEVER ..................................................22

2-32 TAPE GUIDE ASSY (SP),

TAPE GUIDE ASSY (TU) ............................24

2-33 DRUM CLAMPER, DRUM ASSY ................25

2-34 DRUM MOTOR STATOR, BRUSH SPRING,

SPACER, ROTOR CASE, END RING,

BRUSH, UPPER DRUM ASSY ...................26

2-35 CAPSTAN MOTOR .....................................27

2-36 SSW HOLDER, SSW SLIDER.....................29

Interchangeability Adjustment

of the Mechanism.............................................30

3-1

Adjustment of BACK TENSION and

TENSION POLE's Position ..........................30

- 3 -

CONTENTS

3-2

Check and Adjustment of

FM Envelope ................................................31

3-2-1 GUIDE ROLLER Adjustment Check ............31

3-2-2 Height Adjustment of

GUIDE ROLLER (SP) ..................................31

3-2-3 Height Adjustment of

GUIDE ROLLER (TU) ..................................31

3-2-4 Coarse Adjustment of Phase .......................32

3-2-5 Flatness Check of FM Waveform.................32

3-2-6 Tape Running Condition

at the GUIDE ROLLERs (Check1) ...............33

3-2-7 Tape Running Condition

at the GUIDE ROLLERs (Check 2) ..............33

3-3

A/C HEAD Adjustment .................................34

3-3-1 Slant Adjustment of A/C HEAD ....................34

3-3-2 Azimuth and Height Adjustment of

A/C HEAD ....................................................34

3-4

Phase Adjustment ........................................35

3-5

Tape wrinkle check ......................................35

4. Servicing for Tape Jam

during the Loading Process ..................................36

SERVICE CAN BE EXECUTED

WITH THE EE PICTURE DISPLAYED........................37

DECK OPERATION CHECK .........................................37

PARTS LIST ....................................................................1

CABINET ASSEMBLY........................................1

PACKING PARTS...............................................3

ELECTRICAL PARTS.........................................5

DECK ASSEMBLY-1........................................................1

DECK ASSEMBLY-1 P/L ................................................2

DECK ASSEMBLY-2........................................................4

DECK ASSEMBLY-2 P/L ................................................5

BLOCK DIAGRAMS

SCHEMATIC DIAGRAMS

PRINTED CIRCUIT BOARD PARTS LAYOUT

- 4 -

JSTCLK

LIN-IN

LIN-OUT

LMUTE

MOD

MOTORV

OSC

PCB

PLL

PRT

PSAVE

PSLED

PSYNC

PWSV

PWV

REC

REC2

RECPBC

RES

RESPCM

REW

RIS

RMSDET

RXD

SAPIND

SCLK

SCR

SLD

SSVSYNC

STRB

SU-SENS

TSREC

TSSW

TU-SENS

V-REF

VBUSY

VCA

VCO

VENV

VSETCLK

VSETCS

YNR

: Just Clock

: Linear Audio In

: Linear Audio Out

: Linear Mute

: Long Play

: Modulator

: Motor Voltage

: Non Linear

: Oscillator

: Play Back

: Position Control

: Printed Circuit Board

: Pulse Generator

: Phase Locked Loop

: Protect

: Power Save

: Power Save Light Emitting Diode

: Pretened Vartical Synchronizing Signal

: Power Save

: ON/OFF Command to supply B + Power

: Cue Horizontal Signal

: Cue Vertical Signal

: Recording

: Record Command for the PB/REC Control Circuit

: Record/Play Back Chroma Signal

: Reset

: Reset Pulse Code Modulation

: Rewind

: Record Inhibit Switch

: Root Mean Square Detector

: Read X Data

: SAP carrier detect Indicator

: Serial Clock

: Scramble

: Serial control data Input

: Side Lock Detector

: Standard Play

: Start Sensor

: Speed Search Vertical Synchronizing Signal

: Strobe

: Supply Reel Sensor

: Tape Simulate Recording

: Tape Simulator Switch

: Take Up Reel Sensor

: Voltage Referrence

: VSET Busy

: Voltage Control Amplifier

: Voltage Controlled Oscillator

: Video Envelope

: VSET Clock

: VSET Chip Select

: Y(Luminance) Signal Noise Reduction

: Audio/Control

: Audio Play Back

: Audio Recording

: Audio Erase

: Audio Envelope

: Automatic Frequency Control

: Audio Flip Flop

: Auto Fine Tuning Voltage

: Automatic Level Control

: Audio Mode

: Amplifier Alternating Current Ground

: Automatic Phase Control

: Auto Fine

: Attenuator

: Blue Back Mute

: Carrier/Noise Ratio

: Charge Coupled Device

: Character Generator-Chip Slect

: Channel Switch

: Clock Select

: Counter

: Comparator

: Converter Switch

: Capstan-Frequency Generator

: Capstan-Reverse

: Capstan Motor Voltage

: Chroma Rotation

: Composite Synchronizing Signal

: Control

: Detail Enhancer

: Drum Flip Flop

: Demodulator

: Detector

: Delay

: Drop Out Compensator

: Drop Out Control Stop

: Drum-Frequency Generator

: Drum Control Out

: Drum-Phase Generator

: Electronic-Electronic

: Emphasis

: Extended Play

: Equalizer

: End Sensor

: Feed Back Clamp

: Full Erase

: Fast Forward

: Frequency Generator

: Fluorescent Tube Driver Chip Slect

: Frequency Modulation

: Frequency of Color Subcarrier

: Ground

: Head Amplifier Switch

: Hi-Fast Forward/Rewind 400

: Hi-Fast Forward/Reverse Speed Search

: Horizontal Synchronizing Signal

: I(Current)-Limitter

A/C

A-PB

A-REC

AENV

AFC

AFF

AFTV

ALC

AMODE

AMPC

APC

ATFN

ATT

BLMUTE

C/N

CCD

CG-CS

CHSW

CLKSEL

CNTR

COM

CONV SW

CP-FG

CP-REV

CPMOTORV

CROT

CSYNC

CTL

D.E.

D-FF

DEMOD

DET

DLY

DOC

DOCSTOP

DR-FG

DR-OUT

DR-PG

EMPH

FBC

FLDCS

FSC

HASW

HFR400

HFRSS

HSYNC

I-LIMIT

GLOSSARY OF ABBREVIATIONS

- 1 -

INTRODUCTION

This manual provides service information for the adjustments

of mechanical and electrical operations.

Due to design modifications, the servicing procedures and

data given in this manual are subject to possible change

without prior notice.

SAFETY PRECAUTIONS

WARNING : Many of the programs broadcast by television

stations are protected by copyright and Federal law

imposes strict penalties for copyright infringement. Some

motion picture companies have taken the position that

home recording for noncommercial purposes is an

infringement of their copyrights. Until the courts have ruled

on the proper interpretation of the law as applied to home

video recording, this equipment, if used to record

copyrighted material, should be operated at the user's own

risk.

WARNING :

TO PREVENT FIRE OR SHOCK HAZARD, DO NOT

EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.

This video cassette recorder should be used with AC

120V, 60Hz only.

SAFETY NOTICE

Before returning VCR to the customer a safety check of the

entire VCR should be made. The service technician must be

sure that no protective device built into the instrument by the

manufacturer has become defective or inadvertently

damaged during servicing. Observe all caution and safety

related notes located on or inside the VCR cabinet.

WARNING : Alterations of the design or circuitry of this VCR

should not be made. Any design alterations or additions,

such as circuit modifications, auxiliary speaker jacks,

switches, grounding, active or passive circuitry, etc., or use of

unauthorized camera, cables, accessories, etc. may alter the

safety characteristics of this VCR and potentially create a

hazardous situation for the user. Any design alterations or

unauthorized additions will invalidate the manufacturer's

warranty and will further relieve the manufacturer of

responsibility for personal injury or property damage resulting

from them. Do not lubricate any motors. When reassembling

the VCR, always be certain that all the protective devices are

put back in place, such as non-metallic control knobs, shield

plates, etc. When service is required, observe the original

lead dress. Components that show evidence of overheating

or other electrical or mechanical damage should be replaced.

WARNING : Replace with same type 1.6A, 125V FUSE.

LEAKAGE CURRENT CHECK

Before returning the VCR to the customer, it is recommended

the leakage current be measured by the following methods.

1. Cold Check

With the AC plug removed from the 120V AC source,

place a jumper across the two AC plug prongs. Turn the

AC switch on. Using an ohmmeter, connect one lead to

the jumpered AC plug and touch the other lead to each

exposed metal part (metal cabinet, screwheads, metal

overlays, control shafts, etc.), particularly any exposed

metal part having a return path to the chassis. Exposed

metal parts having a return path to the chassis should

have a minimum resistance reading of 1 M

. Any

resistance below this value indicates an abnormality

which requires corrective action. Exposed metal parts not

having a return path to the chassis will indicate an open

circuit.

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