Daewoo DCR-9130 Service Manual

S/M No. : VCR9ADPEN0

✔ Caution :

In this Manual, some parts can be changed for improving, their performance without notice in the parts list. So, if you need the latest parts information,please refer to PPL(Parts Price List) in Service Information Center (http://svc.dwe.co.kr).

DAEWOO ELECTRONICS Corp.

Dec., 2003

http : //svc.dwe.co.kr

Service Manual

DVD COMBO RECEIVER

MODEL :

DCR-9130 SERIES

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

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

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

WAVEFORMS................................................................................................................................31

CIRCUIT DIAGRAM.......................................................................................................................35

PCB CIRCUIT BOARD..................................................................................................................43

INSTRUMENT DISASSEMBLY.....................................................................................................47

ELECTRICAL PARTSLIST............................................................................................................53

CONTENTS

SPECIFICATIONS

Power 200-240V~ AC 50/60Hz Consumed electricity 75W Weight 7.15kg Dimension (WxHxD) 430mm x 91mm x 370mm Operative temperature +5¡C~40¡C Installation condition Horizontal / Relative humidity under 80% Signal type PAL COLOR Antenna Input/output U/V-mixed: 75W unbalanced

VIDEO input 1.0 Vp-p unbalanced, RCA JACK AUDIO input -8.8dBm, RCA JACK VIDEO output VIDEO output terminal, 1.0 Vp-p unbalanced, SCART

RGB output (75W In load R: 0.7Vp-p, G: 0.7Vp-p, B: 0.7Vp-p,) AUDIO output Audio output terminal: -5.8dBm(VCR), 2.0Vrms(DVD), SCART Playable tape Very high dense tapes with VHS marks Playable disc DVD, VIDEO-CD, CD (12cm), CD (8cm), MP3, CD-R, CD-RW Tape speed SP:23.39 mm/s, LP: 11.70 mm/s Playtime SP: 3hrs, LP: 6hrs (use of E-180 tape) Clock display 24hrs Time Recording 8 programs a month Persistence in power failure 1 min VIDEO S/N (VCR) Over 43dB(Standard recording) Resolution VCR Over 240 lines (Standard recording)

DVD Over 400 lines (DVD Disc PLAY) AUDIO (VCR) Over 65dB (Hi-Fi), over 40dB (Mono) AUDIO (DVD) 90dB AUDIO dynamic range 90dB

Speaker Output Center 50W (6W) (240 x 115 x 115) (Impedance) & (Size) Front L/R 50W x 2 (6W) (140 x 115 x 200)

Rear L/R 50W x 2 (6W ) (108 x 88 x 164)

Subwoofer 50W (6W ) (198 x 350 x 355) Amp Frequency Response 20Hz ~ 20KHz Radio Tuning Range FM : 87.5 ~ 108.0 MHz, AM : 522 ~ 1611KHz Radio Intermediate Freq. FM : 10.7 MHz, AM : 450 KHz FM Antenna Impedance 75 W (unbalance) AM Loop Antenna Inductance 12.5 uH (1KHz)

ADVANTAGES OF THIS PRODUCT

¥ DVD, VCD, CD, CD-R(MP3), CD-RW, VHS playback function

¥ Watching DVD for recording broadcast

¥ Integrated remote control (VCR, DVD)

¥ VISS function (VHS Index Search System)

¥ Multiplex sound playback/record

¥ High Sound Quality of 6 head Hi-Fi (Hi-Fi Model only)

¥ One Touch timer Recording (OTR)

¥ MP3 file playback function (CD-R disc having records of MP3 files)

¥ GUI (Graphical User Interface) 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)

¥ Digital Amplification total output power 300W

¥ 50W X 5 satellite speaker system plus 50W Subwoofer

¥ Dolby Digital, Dolby prologic, Dolby Prologic II, DTS compatible

¥ Various Sound Field effect (Movie, Music, PL EMUL, Matrix, Classic, Hall, Theater)

¥ High bit / high sampling with 27MHz / 10bit video encoder

This unit has 27MHz / 10bit capability, that enables the faithful reproduction of fine images.

¥ High bit / high sampling with 96KHz / 24bit audio D/A converter

With this 96KHz / 24bit linear Pulse Code Modulated signals, which constitute the highest specifications in the DVD standards, you can enjoy faithfully reproduced sound in all of its various modes. To support 96KHz sampling / 24bit sound, the shaping noise of this multi-level digital sigma type of D/A converter is kept flat up to 44KHz, thus preventing the important audio signals from being affected.

¥ Built-in Dolby Digital decoder (DVD)

¥ Slow Forward / Reverse (DVD) playback

¥ Fast Forward / Reverse playback

¥ Search of title, chapter, and time in DVD disc, and search of track and time in VCD and CD

¥ Various TV aspect (DVD)

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

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

¥ Repeat a defined period from A to B (DVD/VCD/CD)

ADVANTAGES OF THIS PRODUCT

¥ Selective Play (DVD/VCD/CD)

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

¥ Various languages OSD (On Screen Display) function (DVD)

You can select and display OSD among various languages. (9 Languages)

¥ 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 9 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 seen in up to 9 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)

¥ Radio function

Digital FM/AM tuner with 50 station memories

¥ RDS (Radio Data System) function

Besides listening the radio, this set can receive the radio channel that sends the letter data and display them on the Display window. It calls RDS.

TROUBLESHOOTING

1. POWER CIRCUIT

✓ CAUTION

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

Check IC801,IC804,D821,

D822,D823,D824,D825,D826,

D827,D828,D830

No power

Power cord is ok?

Is 200V~400V voltage

obtained at C805+?

Switching Pulse of

IC801 and IC804

Drain is normal?

Cathode Voltage of

D821,D822,

D823,D824,D825,D826,D827,

D828,D830 is normal?

Output voltage of Q801,

Q802,IC807 is normal?

Check the MAIN BOARD

Exchange Power cord

Check F801,L801,L802,

D801,R803,R804,R807,R808

Exchage the wicked part

11th pin voltage of P823 is DC 5V

when Power on "H"?

YES

Check MICOM

ON/OFF Control

Check Q801,Q802, IC807

2. SYSTEM CIRCUIT

TROUBLESHOOTING

No VFD display.

Is 5V obtained at IC701 pin#13?

Is -24V obtained at IC701 pin#30?

Oscillation at IC701 pin #8?

Is -24V, -20V obtained at F-,

F+?

Specific GRID/SEG doesnt function.

Check D721.

Check POWER circuit at -24V.

Check IC701.

Check IC 701 pin #31~42.

Check IC 701 pin #14~29.

YES

GRID output at PORT of IC701?

YES

SEGoutput at PORT of IC701?

Check POWER circuit at F-, F+.

Exchange IC501.

YES

A. VFD DISPLAY

TROUBLESHOOTING

Noise appears on the

playback screen.

Is noise diminished by tracking

adjustment.

Noise band is trembled up and

down?

Re-adjust PATH.

Is the height of CTL HEAD normal?

No dust?

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)).

Check HEAD AMP connector

and HEAD.

YES

ENVE Wave at P502 pin #4?

Check VIDEO circuit.

Are there SW, HA SW pulse at

IC501 pin #16, 18?

Check PCB Pattern.

Check IC501.

B-2. Bad playback quality (2)

YES

TROUBLESHOOTING

No broadcasting signal

received

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

62 (DATA) normal?

Is SIF,Video output at TMI(RF101)

pin#22,24 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 isnÕt inserted.

Is 5V voltage obtained at Loading

parts IC501 pin#63?

Is 14V voltage obtained at

Capstan Motor P501 pin#2?

Check at EVER 14V

Check L526.

Connect Capstan and Loading Motor. Check connector and Capstan Motor.

YES

Is 13V voltage obtained at Each

parts of Loading Motor?

Replace Loading Motor.

Check D825 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.

Check S501, S502 REEL Sensor.

Is D.PG/FG pulse at IC501

pin#90 normal ?

Is C. FG pulse at IC501 pin#87

normal ?

Is there REEL Pulse at IC501

pin#79, 80?

Check and replace IC501.

YES

Check C.FG(R543,C517) and

P501 pin#1.

TROUBLESHOOTING

F. DRUM Motor stops

G. CAPSTAN doesnÕt rotate

CAPSTAN doesnÕt rotate.

Is EVER 14V voltage obtained

at P501 pin#2?

YES

Is Capstan PWM fit to

IC501 pin#77?

Is 3.2V voltage obtained

at P501 pin#5?

Is 2.7V voltage obtained

at P501 pin#9?

Check P501 Connector and

Capstan Motor.

Check EVER 14V.

(L526)

Check Capstan FG

(IC 501 pin# 87).

Check

R541,R540,R539,R538,C518

Check R537,R536,C521

DRUM Motor stops.

Is 14V voltage obtained at P501

pin#2?

YES

Is DRUM PWM fit to IC 501

pin#76?

Is 2.6V voltage obtained at

P501 pin#12?

Check Capstan Motor and

DRUM Motor.

Check EVER 14V

(L526).

Check DRUM PG/FG

(IC 501 pin# 90).

Check R534,R535,C519,C520.

TROUBLESHOOTING

3. VIDEO circuit

A. EE screen doesnÕt appear

EE MODE Picture NG

Is Video signal input at

IC301 pin#48,50,52,54?

Is 5V supplied at

pin#42,55,72,91of IC301?

Is C.S, DATA, CLOCK signal input pin#67,68,69 of IC301?

Check IF and LINE IN JACK.

Check POWER circuit.

Check IC501

pin #58,71,72.

YES

Is signal output from pin#65 of

IC301?

YES

Check IC301

pin#62 Q-V Sync.

Is signal input into pin#50

of IC501?

YES

Check PCB Pattern.

Is signal output from

pin#52 of IC501?

YES

Is 5V supplied to pin#53, 98,

99 of IC501?

Is signal output at IC301

pin#61?

YES

Check PCB Pattern

Q309, Q310.

Check IC 501

YES

Check POWER circuit.

Is signal input at IC301

pin#56?

Check RF Output.

Check PCB Pattern & LINE

out.

YES

Check IC301.

TROUBLESHOOTING

B. Playback picture doesnÕt appear

YES

Is Y SIGNAL output at IC301

pin#46?

Is VIDEO SIGNAL output at IC301

pin#65?

Check and Replace IC301.

PB video signal missing.

Is Envelope output from IC301

pin#79?

Same as EE MODE check.

Is 5V supplied at IC301 pin#91?

Is SW Pulse input at IC301

pin#70?

Is 5V obtained at IC301 pin#24,

42,55,72,91?

Check POWER 5V.

Check IC501 pin#18.

Clean head or Replace head.

Check POWER 5V.

Check PATTERN

YES

Does X301(4.43MHz)

oscillate?

Is Y SIGNAL input at IC301

pin#43?

Check PATTERN

YES

Replace X301.

Check and replace IC301.

TROUBLESHOOTING

Is +5V supplied at IC301 pin#91?

YES

Is VIDEO SW Pulse input at IC301

pin#70?

Is REC signal output from IC301

pin#94,95,89,90? LP MODE: 89,90 Pin SP MODE: 94,95Pin

Check video HEAD and Connector.

Is signal input into IC301

pin# 48,50,52,54,56?

Check POWER circuit.

Check IC501 pin#18.

Record video signal poor.

Check EE MODE.

YES

Is luminance and color signal

output from IC301 pin#78?

Replace IC301.

YES

C. No recording

YES

Is IC301 pin#80 REC(H) HIGH?

Check IC501 pin#45.

TROUBLESHOOTING

Is Video signal input at IC501

pin#50?

Check POWER circuit.

No OSD appears.

Is 5V obtained at IC501 pin# 53,

98, 99?

Is Video signal output at IC501

pin#52?

Replace IC501.

D. No OSD(On Screen Display) appears(VCR)

YES

Check IC 501.

Check DVD loader

Check DVD video buffer(QD50,QD51,

QD52)and DVD output jack

Check PCB pattern

E. No DVD Video

Is power_on_H signal

output at P601 pin#11

Chage the mode with DVD

No DVD signal

Is Mode DVD mode?

Is power supplied CN2?

(In DVD loader PCB)

Check Power circuit

YES

Check IC 501 pin#32 and PCB

pattern

Is video signal output at

P101 pin #1,3,5,7,8,9?

Is video signal input IC301 pin#54?

Check IC301 and EE mode

YES

TROUBLESHOOTING

4. AUDIO (Hi-Fi MODEL)

No sound in RF E-E mode

Is Audio signal output at IC601 pin

#3, 13?

A. No sound in E-E mode

a. RF E-E

Check IC501.

Is Audio signal output at IC251

pin#16,17?

Are CLK and DATA obtained at

IC251 pin#42,43?

Is 5V obtained at IC251 pin#40?

Replace IC251.

YES

Is 12V obtained at IC251 pin#34?

YES

Check POWER circuit.

YES

Replace IC601.

Is 5V obtained at IC051 pin#1?

Check Power circuit.

Is there SIF signal at IC051 pin#2

in RF mode?

Check RF101.

YES

Is there SIF signal out at IC051

pin#30, 31?

Check IC051.

YES

Comparing with switching table, are SWA, B CTL SIGNAL

right at IC601 pin #9,10?

Check Output JACK.

YES

TROUBLESHOOTING

b. AV1 E-E

No sound in AV1 E-E mode.

Check Input AV1 JACK

Is Audio signal at IC251 pin#6, 7?

Is Audio signal output at IC601 pin

#3, 13?

Check IC501.

Is Audio signal output at IC251

pin#16,17?

Are CLK and DATA obtained at

IC251 pin#42,43?

Is 5V obtained at IC251 pin#40?

Replace IC251.

YES

Is 12V obtained at IC251 pin#34?

YES

Check POWER circuit.

YES

Replace IC601.

YES

Comparing with switching table, are SWA, B CTL SIGNAL

right at IC601 pin #9,10?

Check Output JACK.

YES

TROUBLESHOOTING

c. AV2 E-E

No sound in AV2 E-E mode.

Check Input AV2 JACK

Is Audio signal at IC251 pin#8, 9?

Is Audio signal output at IC601 pin

#3, 13?

Check IC501.

Is Audio signal output at IC251

pin#19, 20?

Are CLK and DATA obtained at

IC251 pin#42,43?

Is 5V obtained at IC251 pin#40?

Replace IC251.

YES

Is 12V obtained at IC251 pin#34?

YES

Check POWER circuit.

YES

Replace IC601.

YES

Comparing with switching table, are SWA, B CTL SIGNAL

right at IC601 pin #9,10?

Check Output JACK.

YES

TROUBLESHOOTING

d. AV-F(Front) E-E

No sound

AV-F(Front)E-E mode

Is Audio signal at IC251

pin#10,11?

Check output jack.

Check Power circuit

Replace IC601

Check Input AV3 jack

Replace

IC601

Check IC501

Is Audio signal output

at IC601 pin#3,13?

12V obtained

at IC601 pin

#16?

Is there

"L"at IC601

pin#9,10?

Is there signal

at IC601

pin#3,13?

Is 5V obtained at IC251 pin#40?

YES

Is 12V obtained at IC251 pin#34?

YES

Are CLK and DATA obtained

at IC251 pin#42,43

YES

Are there voltage at ICD01#8(5V),

#9(3.3V),#21(5V)

Are there clocks at ICD01

#5(BCLK),#6(LRCK), #10(MCLK)?

Is there reset at ICD01 #14?

Is 12V obtained at ICD02 #8?

Check Power circuit

Check DVD board

Check signal flow circuit

Check ICD02

YES

Are there signal at ICD02 #1,7?

YES

Is 12V obtained at IC251 #34?

Is 5V obtained

at IC251 #40?

YES

No sound DVD EE mode

Is audio signal

at IC251 #4,5?

YES

Is audio signal output

at IC251 #3,13?

YES

Are CLK and DATA obtained at IC251 pin#42,43

Is there MUTE(H)

at IC251 pin#36

Check output jack

YES

Replace IC251

Check IC501

e. DVD E-E

YES

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