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SHARP DVL80W
Service Manual


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

Description of SHARP DVL80W 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.

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Text excerpt from page 19 (click to view)
FLOW CHART NO.4
No short-circuited? Yes Yes No of CN301 (focus actuator terminal)? actuator.

The disc does not rotate. Replace S802. Focus control drive voltage applied to 27, 29 pin No Check line between IC705 and the focus

Is tray lid open? When S802 is pressed, are the pins 3 and 4

Check the connection of optical pickup cable. Yes If it is normal, replace the optical pickup. Check the connection between pins 2 or 4 of S802
and pins 27 of IC502.

FLOW CHART NO.7
The DVD disc is not recognized. No Check cable connecting to the P706. (When the laser beam does not go on) (Check the P706 line pins 2 and 4 of IC705.)
No Is drive signal (SEL) Q301 (LD POWER No Check line from the pin 150 of IC401, through Check cable connecting to the CN705. ON) being output pin 150 IC401? Q305, to the base of Q301. does pickup move in the direction of outer Is drive signal (LDO1) Q302 (LD POWER No Check line between the pin 45 of IC301 and periphery? CTL) being output to the pin 45 IC301? base of Q302. Check the M_4.8V line. No

Does pickup move in the direction of inner periphery?

Yes

After moving in the direction of inner periphery,

Yes No

When pressed, is base of Q303 0.8V? Check the line between S801 and R309. Yes IC702? Is voltage of 3.3V being applied to emitter Check the D_3.1V line and A_5V line. Q301? And, is the voltage of 3.4V being applied Yes Is the voltage of 3.1V and 2.3V being applied to the pins 14 and 23 of CN301, respectively? Yes Check the connection of optical pickup cable. If it is normal, replace the pickup.

Is 4.8V being applied to the pins 16 and 17 of No

Yes

Replace the IC702. to the emitter of Q302?

FLOW CHART NO.5 No Check the Q301 line between Q302 and

The [No Disc] indication. (In case of focus error) CN301.

When removing disc and applying load to spin No See FLOW CHART NO.6<The [No Disc] indication. motor (by stopping with hand, etc.), objective lends (In case focus servo does not function.)> moves up and down? (Checking item to symptom) Note) If load is applied to spin, lens does not

FLOW CHART NO.8 move and becomes NO DISC immediately.
The CD disc is not recognized. Yes (When the laser beam does not go on) Replace IC301.

19
No Is drive signal (LDO2) Q304 (LD POWER No Check line between the pin 4 of IC301 and

Is FE signal output to the pin 21 of IC301 when Yes disc is set? Is there input signal on the pins(50,55) and (49,54)

When pressed, is base of Q303 0.8V? Check the line between S801 and R309.
Is FE signal inputted into the pin 8 of IC401. No

of IC301? CTL) being output to the pin 4 IC301? base of Q304. Yes No

No

No Is voltage of 3.4V being applied to emitter Check the A_5V line. Check or IC401. If it is normal, replace the optical pickup. of Q304?
In case of CD For DVD, 58, 59, 63, and 64 Yes Check line between the IC301 and IC401.

Yes Yes Check the connection of optical pickup cable.

No

Is voltage of 2.3V being applied to pin 9 Check the line between Q304 and CN301.

FLOW CHART NO.6 of CN301?
Check the connection of optical pickup cable. If it is normal, replace the pickup Is focus control signal output to the pin 14 of No

The [No Disc] indication. (In case focus servo does not function.) Yes

Check the IC401 DAC power source periphery IC401? circuit. If it is normal, replace IC401.

Is from pin 14 of IC401 No Check the focus control signal (DA0) line between input into pin 20 of IC705? the IC705 and IC401.

Yes Both picture and sound do not operate normally.(1)

FLOW CHART NO.9

Yes Yes No No Yes

Set disc to mechanism. When cover is closed, disc starts rotating? Check tray switch. S801, 802 Is the level of RF signal which is output from pin 28 of IC301, normal? No Check M_5V line. No focus control drive output from Is 8V voltage applied to the pins 8 27 and Yes No

Check for contamination objective lens of pins 29 30 25 and 24 of IC705? optical pickup.

Yes Replace IC705.

main PWB Replace the optical pickup unit. Yes Check the main PWB unit.

DV-L80S/W

No

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