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DAEWOO DV115
Service Manual


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  • Contains Circuit Diagrams
  • Download
  • PDF Format
  • Complete manual
  • Language: English
Price: $4.99

Description of DAEWOO DV115 Service Manual

Complete service manual in digital format (PDF File). Service manuals usually contains circuit diagrams, printed circuit boards, repair tips, wiring diagrams, block diagrams and parts list. Service Manual ( sometimes called Repair Manual ) is used mainly by technicians.

If You just want to know how to use Your tv, video, mp3 player etc. You should look for Owner's Manual. After placing order we'll send You download instructions on Your email address.

The manual is available in languages: English

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Text excerpt from page 13 (click to view)
5. Trouble Shooting Guide
-. Front Circuit DV-115/125
Push power on.

1
Check if the POWER PART of the FRONT is OK.

No

LED ON Refer to POWER SUPPLY Yes Yes No Check if the REMOCON waveform of the IC904 PIN(8). No circuit.

STANDBY ON

Yes

Check if the IC905 PIN(13) is OK. Yes

No

LED OFF

No Yes Check if the CN906 is OK. No

Yes

Refer to MICOM circuit.

Replace IC905.

Check RMC circuit.

Re connect it. Does Initial work? No Yes

2 Karaoke option only

Check if the FRONT POWER is OK.

No

Check if the MIC is OK.

No

Yes

Refer to POWER SW PCB Refer to POWER SUPPLY circuit. CN904 PIN4: +5.6V PIN3: -30V

Yes

Check if the POWER PART of the MIC is OK.

No
Refer to POWER SUPPLY circuit. CN907 PIN1 : +5V , PIN2 : -30V PIN4 : +5.6V , PIN6 : 12V PIN8 : +12V

Check if the IC904 OSC PIN(40) waveform is OK.

No No Check if the IC904 PIN(44) is OK. No Yes Yes Replace X901.

Check if the MIC VOLUME is OK.

Yes

No

Check if the Check if the VR901 is OK. Yes CN905 is OK.

No

Yes Yes

Re-connect it. Yes

Check if the IC904 PIN (44) (45) is OK.

No Refer to POWER SUPPLY circuit. IC904 PIN44: +5V PIN45: -30V

Replace VR901.

Check PATTERN.

Check if the 904 PIN(6) is LOW.

No

Refer to JA901 MIC JACK. Check if the ECHO VOLUME is OK. No Yes

Yes

Check if the FL901 PINS are OK. No Yes Yes Check PATTERN and RESOLDING. No

Check if the 905(1)(3) waveform.

No

Yes Refer to IC901, IC902, IC903.

Refer to MICOM circuit. Check if ALL BUTTONS are OK.

Refer to IC ES56033.

Front PCB OK.

Refer to DSP PCB.

Yes

Check if POWER PART of the FRONT is OK.

No

Check if the VOLUME is OK.

No

Yes

Refer POWER SUPPLY circuit.

Yes

Check IC904 PIN(29) (30) (31) OK.

No

Check if the HEADPHONE is OK?

No

Yes

Refer to MICOM circuit. Yes Check if the POWER is OK. No

Refer to KEY-IN line.

Check if the REMOCON is OK. No Yes

Yes

Refer to Power Supply circuit.

Check if POWER PART of the FRONT is OK.

No

Check if the CN903 PIN(5) is High.

No

Yes

Refer to Power Supply circuit.

1

2

Yes

Check PH991 circuit.

Check if IC904 PIN(7) (24) waveform OK.

No

Check if HEADPHONE JACK is OK.

No Yes

Check VR904, R926, R927 OK. No Yes

Yes

Check MAIN PCB.

Replace H/P JACK.

Refer to MICOM circuit.

Replace VR904, R926, R927.

13

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