Daewoo DC-F84D1D Manuale utente

S/M No. : VDCB83PET1

MAY. 2006

Service Manual

MODEL: DC-F84D1D

DC-F84D1S

DC-F8GD1D

DC-F8GD1S

DC-F8HD1D

DC-F8HD1P

DC-F8HD1S

SF-7200

SF-7500

SF-9200S

SF-9300

SF-9300P

SF-9300S

SF-9500P

SF-9500S

SPECIFICATIONS...............................................................................................................2

ADVANTAGES OF THIS PRODUCT....................................................................................3

TROUBLE SHOOTING....................................................................................................................5

WAVEFORMS ................................................................................................................................23

CIRCUIT DIAGRAM.......................................................................................................................26

PCB CIRCUIT BOARD..................................................................................................................35

INSTRUMENT DISASSEMBLY .....................................................................................................39

ELECTRICAL PARTSLIST............................................................................................................45

CONTENTS

SPECIFICATIONS

Disc type

DVD VIDEO-CD CD

Analogue Audio output 48/96KHz sampling 44.1KHz sampling 44.1KHz sampling

Digital Audio output 48KHz sampling 44.1KHz sampling 44.1KHz sampling

Output

Power 200-240V~, 50/60Hz

Consumed electricity 20W

Weight 4.6kg

Dimension (W x H x D) 435mmx93mmx255mm

Operative temperature +5°C~40°C

Installation condition Horizontal / Relative humidity under 80%

Laser output 5mW(DVD), 7mW(CD) (Continuous wave max.)

Wave length 657nm(DVD), 783nm(CD)

Signal type PAL COLOR

Antenna Input/output U/V-mixed: 75Ωunbalanced

VIDEO input 1.0Vp-p (unbalanced, RCA JACK)

AUDIO input -8.8dBm, RCA JACK

VIDEO output

(common use of DVD and VCR)

VIDEO output terminal, 1.0 Vp-p unbalanced, RCA JACK, SCART JACK

VIDEO output (DVD only) RGB output (75ΩIn load R: 0.7Vp-p, G:0.7Vp-p, B:0.7Vp-p)

AUDIO output

(common use of DVD and VCR) Audio output terminal (2 kinds): -5.8dBm(VCR), 2Vrms(DVD), RCA JACK

AUDIO output (DVD only) Analogue AUDIO output : 2.0Vrms

Digital audio output (COAXIAL)

Playable tape Very high dense tapes with VHS marks

Playable disc DVD, VIDEO-CD, CD (12cm), CD (8cm), MP3, CD-R, DIVX,CD-RW

Tape speed SP: 23.39mm/s, LP: 11.70mm/s

Playtime SP: 3hrs, LP: 6hrs (use of E180tape)

Clock display 24 hrs

Time Recording 8 programs a month

Persistence in power failure 1min

VIDEO S/N (VCR) Over 43dB(Standard recording)

Resolution VCR Over 240 lines (Standard recording)

DVD Over 400 lines (Playback DVD)

AUDIO (VCR) Over 65dB

AUDIO (DVD) 90dB

AUDIO dynamic range 90dB

DVD Audio output standards

ADVANTAGES OF THIS PRODUCT

• DVD, VCD, CD, CD-R(MP3), DIVX, CD-RW, VHS

• Watching DVD for recording broadcast

• Integrated remote control (VCR, DVD)

• VISS function

• Multiplex sound playback/record

• High Sound Quality of 6 head Hi-Fi

• Simple record function

• MP3/JPEG file playback function (CD-R disc having records of MP3/JPEG files)

• Function to play DivX files (disc recorded with the .avi,. divx format.)

(Some of the discs may not be played according to a DivX version. )

• GUI (Graphical User Interface) through OSD (On Screen Display)

By using the [DISPLAY] button on the remote control, information on the DVD/VCD/CD player and disc, can be

displayed on the TV screen.

• Screensaver function (DVD)

• 3D sound (3D sound effect using 2 speakers)

• High bit / High sampling with 27MHz / 10bit video encoder

• High bit / High sampling with 96MHz / 24bit Audio D/A Converter

• Coaxial, digital Audio output (PCM, Dolby Digital, dts)

You can enjoy high-level digital audio by connecting with amp embedded with Dolby Digital / dts decoder.

• Built-in Dolby Digital decoder (DVD)

• Analog audio 2-channels output for DOWNMIX (x1)

• Composite video output (x1)

• Slow Forward / Reverse playback (DVD)

• Fast Forward / Reverse playback

• Search of title, chapter, and time in DVD disc, and search of time and track time in VCD.

• Various TV aspect (DVD)

4:3 for Pan and Scan, 4:3 for Letter Box, and 16:9 for Wide

• Repeat playback (title, chapter, and part for DVD/ track, disc, and part for VCD/CD)

• Selective Play (DVD/VCD/CD)

You can select and play the desired title / chapter of DVD and track of Video CD/CD in PLAY mode.

ADVANTAGES OF THIS PRODUCT

• Parental Lock function (DVD)

This function can prevent playback of software that may be unsuitable for children.

• Multi Audio function (DVD)

The audio soundtrack can be heard in up to 8 languages. In the case of SVCD or VCD, it depends on the disc. (The

number of audio languages depends on the software.)

• Multi Subtitle function (DVD)

The subtitle can be seem in up to 32 languages. In the case of SVCD or VCD, it depends on the disc. (The number of

subtitle languages depends on the software.)

• Multi Angle function (DVD)

This function allows you to choose the viewing angle of scenes which were shot from a number of different angles.

(The number of angles depends on the software.)

• Screen zoom function (DVD/VCD)

TROUBLESHOOTING

1. POWER CIRCUIT

✓ CAUTION

You must use insulated transformer during the first part test of POWER circuit.

Check IC501, IC701

No power

POWER cord is ok?

Is 400V~200V voltage

obtained at C804 +?

Output voltage of 2nd

parts is normal?

Check

rectifier diode of 2nd parts ;

D821, D822, D823, D824,

D825, D826, D827

Switching

pulse of Q801 collector is

normal?

Exchange POWER CORD

Check F801.

Exchange rectifier diode of 2nd

parts ; D821, D822, D823, D824,

D825, D826, D827.

Check Q801.

YES

2. SYSTEM CIRCUIT

TROUBLESHOOTING

No LED display.

Is 5V obtained at IC701

pin #9, 25?

Oscillation at IC701pin #1?

SpecificGRID/SEGdoesntfunction.

Check R588, D857, L503, L860

Exchange IC701.

Check IC 701 pin #22~24, 27,

28, 30, 31.

Check IC 701 pin #10~12, 14~21.

YES

GRID output at PORT of IC701?

YES

SEG output at PORT of IC701?

ExchangeIC701.

YES

A. LED DISPLAY

TROUBLESHOOTING

Noise appears on the

playback screen.

Is noise diminished by tracking

adjustment.

Noise band is trembled up and

down?

Re-adjust PATH.

Istheheightof CTLHEADnormal?

Nodust?

Is there problem in CTL Input

circuit and amplifier.

YES

Is there CTL pulse at IC501

pin#97?

Check IC501.

Noise appears on the screen even

though changing tape.

Re-adjust the height of AC HEAD.

Remove the dust.

Check C510,R545~R547

IC 501 pin #91, 92, 98.

Re-adjust PATH.

B-1. Bad playback quality (1)

YES

Noise appears on the Full

playback screen.

Are SW pulse and HA SW normal?

Recheck step B-1

(Bad playback quallty (1)).

CheckHEADAMPconnector

andHEAD.

YES

ENVE Wave at PT01 pin #4?

CheckVIDEOcircuit.

Are there SW, HA SW pulse at

IC501 pin #16, 18?

Check PCB Pattern.

CheckIC501.

B-2. Bad playback quality (2)

YES

TROUBLESHOOTING

No broadcasting signal

received

Is the output at IC501 pin# 61(CLK),

60 (DATA) normal?

Is SIF,Video output at TMI(RF101)

pin#16,19 normal?

Check IC 501.

Check IC301.

Check IC501.

YES

Is Video Signal input at IC501

pin#50?

Is there Video output at IC501

pin#52?

Check TMI (RF101) Block.

Check Video Buffer Q670, Q671

C. No broadcasting signal received

YES

TROUBLESHOOTING

Cassette tape isn’t inserted.

Is 5V voltage obtained at Loading

parts IC501 pin#2?

Is 14V voltage obtained at

Capstan Motor P501 pin#2?

Check at EVER 14V

Check Q850.

ConnectCapstanandLoading Motor.

CheckconnectorandCapstan Motor.

YES

Is 13VvoltageobtainedatEach

partsofLoadingMotor?

Replace Loading Motor.

Check D851 and POWER circuit.

D. No CASSETTE Loading

YES

E. AUTO STOP in Playback mode

VCR stops automatically in

playback mode.

Check R544,C516 and P501

pin#11.

CheckS501,S502REEL Sensor.

Is D.PG/FG pulse at IC501

pin#90 normal ?

Is C. FG pulse at IC501 pin#87

normal ?

IsthereREELPulse atIC501

pin#79,80?

CheckandreplaceIC501.

YES

Check C.FG(R543,C517) and

P501 pin#1.

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