Daewoo DCR-9130 Service Manual
S/M No. : VCR9ADPEN0
Service Manual
DVD COMBO RECEIVER
MODEL : DCR-9130 SERIES
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.
http : //svc.dwe.co.kr |
Dec., 2003 |
CONTENTS
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 |
1
SPECIFICATIONS
Power |
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200-240V~ AC 50/60Hz |
Consumed electricity |
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75W |
Weight |
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7.15kg |
Dimension (WxHxD) |
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430mm x 91mm x 370mm |
Operative temperature |
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+5°C~40°C |
Installation condition |
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Horizontal / Relative humidity under 80% |
Signal type |
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PAL COLOR |
Antenna Input/output |
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U/V-mixed: 75Ω unbalanced |
VIDEO input |
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1.0 Vp-p unbalanced, RCA JACK |
AUDIO input |
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-8.8dBm, RCA JACK |
VIDEO output |
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VIDEO output terminal, 1.0 Vp-p unbalanced, SCART |
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RGB output (75Ω In load R: 0.7Vp-p, G: 0.7Vp-p, B: 0.7Vp-p,) |
AUDIO output |
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Audio output terminal: -5.8dBm(VCR), 2.0Vrms(DVD), SCART |
Playable tape |
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Very high dense tapes with VHS marks |
Playable disc |
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DVD, VIDEO-CD, CD (12cm), CD (8cm), MP3, CD-R, CD-RW |
Tape speed |
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SP:23.39 mm/s, LP: 11.70 mm/s |
Playtime |
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SP: 3hrs, LP: 6hrs (use of E-180 tape) |
Clock display |
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24hrs |
Time Recording |
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8 programs a month |
Persistence in power failure |
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1 min |
VIDEO S/N (VCR) |
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Over 43dB(Standard recording) |
Resolution |
VCR |
Over 240 lines (Standard recording) |
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DVD |
Over 400 lines (DVD Disc PLAY) |
AUDIO (VCR) |
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Over 65dB (Hi-Fi), over 40dB (Mono) |
AUDIO (DVD) |
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90dB |
AUDIO dynamic range |
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90dB |
Speaker Output |
Center |
50W (6Ω) (240 x 115 x 115) |
(Impedance) & (Size) |
Front L/R |
50W x 2 (6Ω) (140 x 115 x 200) |
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Rear L/R |
50W x 2 (6Ω ) (108 x 88 x 164) |
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Subwoofer |
50W (6Ω ) (198 x 350 x 355) |
Amp Frequency Response |
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20Hz ~ 20KHz |
Radio Tuning Range |
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FM : 87.5 ~ 108.0 MHz, AM : 522 ~ 1611KHz |
Radio Intermediate Freq. |
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FM : 10.7 MHz, AM : 450 KHz |
FM Antenna Impedance |
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75 Ω (unbalance) |
AM Loop Antenna Inductance |
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12.5 uH (1KHz) |
2
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)
3
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.
4
TROUBLESHOOTING
1.POWER CIRCUIT
CAUTION
You must use insulated transformer during the first part test of POWER circuit.
No power
Power cord is ok?
YES
Is 200V~400V voltage obtained at C805+?
YES
Switching Pulse of
IC801 and IC804
Drain is normal?
YES
Cathode Voltage of
D821,D822,
D823,D824,D825,D826,D827, D828,D830 is normal?
YES
Output voltage of Q801, Q802,IC807 is normal?
YES
Check the MAIN BOARD
NO
NO
NO
NO
NO
NO
Exchange Power cord
Check F801,L801,L802,
D801,R803,R804,R807,R808
Check IC801,IC804,D821,
D822,D823,D824,D825,D826,
D827,D828,D830
Exchage the wicked part
11th pin voltage of P823 is DC 5V |
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NO |
Check MICOM |
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ON/OFF Control |
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when Power on "H"? |
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Check Q801,Q802, IC807
5
TROUBLESHOOTING
2.SYSTEM CIRCUIT
A.VFD DISPLAY
No VFD display.
Is 5V obtained at IC701 pin#13?
YES
Is -24V obtained at IC701 pin#30?
YES
Oscillation at IC701 pin #8?
YES
Is -24V, -20V obtained at F-, F+?
YES
Specific GRID/SEG doesn t function.
YES
GRID output at PORT of IC701?
YES
SEG output at PORT of IC701?
NO
Check D721.
NO
Check POWER circuit at -24V.
NO
Check IC701.
NO
Check POWER circuit at F-, F+.
NO
Check IC 701 pin #31~42.
NO
Check IC 701 pin #14~29.
Exchange IC501.
6
TROUBLESHOOTING
B-1. Bad playback quality (1)
Noise appears on the playback screen.
Is noise diminished by tracking adjustment.
YES
Noise band is trembled up and down?
YES
Is there CTL pulse at IC501 pin#97?
YES
Check IC501.
NO
NO
NO
Re-adjust PATH.
Noise appears on the screen even though changing tape.
Is the height of CTL HEAD normal? No dust?
Is there problem in CTL Input circuit and amplifier.
YES
Re-adjust PATH.
NO |
Re-adjust the height of AC HEAD. |
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Remove the dust. |
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YES |
Check C510,R545~R547 |
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IC 501 pin #91, 92, 98. |
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B-2. Bad playback quality (2)
Noise appears on the Full playback screen.
YES
Recheck step B-1 (Bad playback quallty (1)).
Are SW pulse and HA SW normal? |
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NO |
Are there SW, HA SW pulse at |
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NO |
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IC501 pin #16, 18? |
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Check IC501. |
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YES |
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Check PCB Pattern. |
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NO |
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ENVE Wave at P502 pin #4? |
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Check HEAD AMP connector |
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and HEAD. |
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Check VIDEO circuit. |
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7
TROUBLESHOOTING
C. No broadcasting signal received
No broadcasting signal received
YES
Is the output at IC501 pin# 61(CLK), 62 (DATA) normal?
YES
Is SIF,Video output at TMI(RF101) pin#22,24 normal?
YES
Is Video Signal input at IC501 pin#50?
YES 
Is there Video output at IC501 pin#52?
NO
Check IC 501.
NO
Check TMI (RF101) Block.
NO
Check IC301.
NO
Check IC501.
YES
Check Video Buffer Q670, Q671
8
TROUBLESHOOTING
D. No CASSETTE Loading
Cassette tape isn’t inserted.
Is 5V voltage obtained at Loading |
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NO |
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parts IC501 pin#63? |
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YES |
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NO |
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Is 14V voltage obtained at |
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Capstan Motor P501 pin#2? |
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Is 13V voltage obtained at Each |
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NO |
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parts of Loading Motor? |
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Replace Loading Motor. |
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Check at EVER 14V
Check L526.
Check D825 and POWER circuit.
Connect Capstan and Loading Motor.
Check connector and Capstan Motor.
E. AUTO STOP in Playback mode
VCR stops automatically in playback mode.
Is there REEL Pulse at IC501 |
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NO |
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pin#79, 80? |
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YES
Check S501, S502 REEL Sensor.
Is D.PG/FG pulse at IC501 pin#90 normal ?
YES
Is C. FG pulse at IC501 pin#87 normal ?
YES 
Check and replace IC501.
NO |
Check R544,C516 and P501 |
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pin#11. |
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NO |
Check C.FG(R543,C517) and |
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P501 pin#1. |
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9
TROUBLESHOOTING
F. DRUM Motor stops
DRUM Motor stops.
Is 14V voltage obtained at P501 pin#2?
YES
Is DRUM PWM fit to IC 501 pin#76?
YES
Is 2.6V voltage obtained at P501 pin#12?
YES 
Check Capstan Motor and
DRUM Motor.
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Check EVER 14V |
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(L526). |
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NO |
Check DRUM PG/FG |
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(IC 501 pin# 90). |
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NO |
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Check R534,R535,C519,C520. |
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G. CAPSTAN doesn’t rotate
CAPSTAN doesn’t rotate.
Is EVER 14V voltage obtained at P501 pin#2?
YES
Is Capstan PWM fit to
IC501 pin#77?
YES
Is 3.2V voltage obtained at P501 pin#5?
YES 
Is 2.7V voltage obtained at P501 pin#9?
Check P501 Connector and
Capstan Motor.
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Check EVER 14V. |
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(L526) |
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Check Capstan FG |
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(IC 501 pin# 87). |
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NO |
Check |
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R541,R540,R539,R538,C518 |
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NO |
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Check R537,R536,C521 |
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10
TROUBLESHOOTING
3.VIDEO circuit
A.EE screen doesn’t appear
EE MODE Picture NG
YES
Is Video signal input at IC301 pin#48,50,52,54?
YES
Is 5V supplied at pin#42,55,72,91of IC301?
YES
Is C.S, DATA, CLOCK signal input pin#67,68,69 of IC301?
YES
Is signal output from pin#65 of IC301?
YES
Is signal input into pin#50 of IC501?
YES
Is signal output from pin#52 of IC501?
YES
Is signal input at IC301 pin#56?
YES
Is signal output at IC301 pin#61?
YES
NO
Check IF and LINE IN JACK.
NO
Check POWER circuit.
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NO |
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Check IC501 |
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pin #58,71,72. |
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NO |
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Check IC301 |
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pin#62 Q-V Sync. |
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Check PCB Pattern. |
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Is 5V supplied to pin#53, 98, |
Check POWER circuit. |
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99 of IC501? |
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Check IC 501 |
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NO |
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Check PCB Pattern |
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Q309, Q310. |
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NO |
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Check IC301. |
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Check |
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Check PCB Pattern & LINE |
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out. |
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11
TROUBLESHOOTING
B. Playback picture doesn’t appear
PB video signal missing.
YES |
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NO |
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Is Envelope output from IC301 |
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Is 5V supplied at IC301 pin#91? |
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pin#79? |
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YES |
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Is SW Pulse input at IC301 |
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pin#70? |
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YES |
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YES |
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Is Y SIGNAL output at IC301 pin#46?
YES
Is Y SIGNAL input at IC301 pin#43?
YES 
Is VIDEO SIGNAL output at IC301 pin#65?
YES
Same as EE MODE check.
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NO |
Is 5V obtained at IC301 pin#24, |
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NO |
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42,55,72,91? |
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YES |
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Check and Replace IC301. |
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YES |
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NO |
Does X301(4.43MHz) |
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oscillate? |
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Check PATTERN |
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NO |
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Check and replace IC301. |
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Check POWER 5V.
Check IC501 pin#18.
Clean head or Replace head.
Check POWER 5V.
Check PATTERN
Replace X301.
12
TROUBLESHOOTING
C. No recording
Record video signal poor.
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Check EE MODE. |
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YES |
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Is luminance and color signal |
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NO |
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output from IC301 pin#78? |
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YES |
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NO |
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Is +5V supplied at IC301 pin#91? |
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YES |
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NO |
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Is IC301 pin#80 REC(H) HIGH? |
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YES |
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Is VIDEO SW Pulse input at IC301 |
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NO |
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pin#70? |
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YES |
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Is REC signal output from IC301 |
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NO |
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pin#94,95,89,90? |
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LP MODE: 89,90 Pin |
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SP MODE: 94,95Pin |
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Check video HEAD and Connector. |
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Is signal input into IC301 pin# 48,50,52,54,56?
Check POWER circuit.
Check IC501 pin#45.
Check IC501 pin#18.
Replace IC301.
13
TROUBLESHOOTING
D. No OSD(On Screen Display) appears(VCR)
No OSD appears.
YES
Is 5V obtained at IC501 pin# 53, 98, 99?
YES
Is Video signal output at IC501 pin#52?
NO
Check POWER circuit.
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NO |
Is Video signal input at IC501 |
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NO |
Replace IC501. |
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pin#50? |
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Check IC 501. |
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Check IC 501. |
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E. No DVD Video
No DVD signal
YES
NO
Is Mode DVD mode? |
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Chage the mode with DVD |
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YES
Is power supplied CN2? |
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NO |
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(In DVD loader PCB) |
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YES |
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Is video signal output at |
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NO |
||
P101 pin #1,3,5,7,8,9? |
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YES |
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NO |
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NO
Is video signal input IC301 pin#54?
YES
Check IC301 and EE mode
Is power_on_H signal |
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NO |
Check Power circuit |
output at P601 pin#11 |
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Check IC 501 pin#32 and PCB pattern
Check DVD loader
Check DVD video buffer(QD50,QD51,
QD52)and DVD output jack
Check PCB pattern
14
TROUBLESHOOTING
4.AUDIO (Hi-Fi MODEL)
A.No sound in E-E mode a. RF E-E
No sound in RF E-E mode
Is 5V obtained at IC051 pin#1?
YES
NO
Check Power circuit.
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Is there SIF signal at IC051 pin#2 |
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NO |
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in RF mode? |
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Check RF101. |
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YES |
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Is there SIF signal out at IC051 |
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NO |
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Check IC051. |
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pin#30, 31? |
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YES |
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Is 12V obtained at IC251 pin#34? |
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NO |
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YES |
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Check POWER circuit. |
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Is 5V obtained at IC251 pin#40? |
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YES |
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NO |
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Is Audio signal output at IC251 |
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Are CLK and DATA obtained at |
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YES |
|
Replace IC251. |
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pin#16,17? |
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IC251 pin#42,43? |
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YES
Is Audio signal output at IC601 pin NO #3, 13?
YES
Check Output JACK.
Comparing with switching table, are SWA, B CTL SIGNAL right at IC601 pin #9,10?
YES |
NO |
|
Replace IC601. |
|
Check IC501. |
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15
TROUBLESHOOTING
b. AV1 E-E
No sound in AV1 E-E mode.
YES
Is 12V obtained at IC251 pin#34?
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NO |
Check POWER circuit. |
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YES |
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Is 5V obtained at IC251 pin#40?
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Is Audio signal at IC251 pin#6, 7? |
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NO |
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Check Input AV1 JACK |
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YES |
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NO |
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Is Audio signal output at IC251 |
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Are CLK and DATA obtained at |
YES |
|
Replace IC251. |
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pin#16,17? |
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IC251 pin#42,43? |
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YES
Is Audio signal output at IC601 pin NO #3, 13?
YES
Check Output JACK.
Comparing with switching table, are SWA, B CTL SIGNAL right at IC601 pin #9,10?
YES |
NO |
|
Replace IC601. |
|
Check IC501. |
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|
16
TROUBLESHOOTING
c. AV2 E-E
No sound in AV2 E-E mode.
YES
Is 12V obtained at IC251 pin#34?
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NO |
Check POWER circuit. |
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YES |
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Is 5V obtained at IC251 pin#40?
|
Is Audio signal at IC251 pin#8, 9? |
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NO |
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Check Input AV2 JACK |
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YES |
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NO |
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Is Audio signal output at IC251 |
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|
Are CLK and DATA obtained at |
YES |
|
Replace IC251. |
|||||
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pin#19, 20? |
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IC251 pin#42,43? |
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YES
Is Audio signal output at IC601 pin NO #3, 13?
YES
Check Output JACK.
Comparing with switching table, are SWA, B CTL SIGNAL right at IC601 pin #9,10?
YES |
NO |
|
Replace IC601. |
|
Check IC501. |
|
|
|
17
TROUBLESHOOTING
d. AV-F(Front) E-E
No sound
AV-F(Front)E-E mode
YES
Is 12V obtained at IC251 pin#34?
Check Power circuit
NO
YES
YES
Is 5V obtained at IC251 pin#40?
Replace IC601
YES
Is Audio signal at IC251 pin#10,11?
YES
Is Audio signal output at IC601 pin#3,13?
YES
Check output jack.
|
|
NO |
12V obtained |
|
NO |
|
Is there |
NO |
Is there signal YES |
Check Input AV3 jack |
||||||||||||||
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at IC601 pin |
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"L"at IC601 |
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at IC601 |
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#16? |
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pin#9,10? |
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pin#3,13? |
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NO |
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NO |
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YES |
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Are CLK and DATA obtained |
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Replace |
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at IC251 pin#42,43 |
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IC601 |
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Check IC501 |
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18
e. DVD E-E
No sound DVD EE mode
YES
Are there voltage at ICD01#8(5V), #9(3.3V),#21(5V)
YES |
|
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|||
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|
Are there clocks at ICD01 |
NO |
|
||||
#5(BCLK),#6(LRCK), #10(MCLK)? |
|
|||||
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|||||
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||||
YES |
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||||
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|
||
Is there reset at ICD01 #14? |
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|
||||
NO |
|
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YES |
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NO |
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Is 12V obtained at ICD02 #8? |
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YES
Are there signal at ICD02 #1,7?
NO
YES
Is 12V obtained at IC251 #34?
NO
YES
Is 5V obtained
at IC251 #40?
NO
YES
Check Power circuit
Check DVD board
Check signal flow circuit
Check ICD02
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Is audio signal |
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NO |
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at IC251 #4,5? |
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YES |
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NO |
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NO |
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Is audio signal output |
Are CLK and DATA |
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Replace IC251 |
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at IC251 #3,13? |
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obtained at IC251 pin#42,43 |
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YES |
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NO |
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NO |
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Check output jack |
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Is there MUTE(H) |
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Check IC501 |
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at IC251 pin#36 |
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19
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