Read Sharp DV-L80 (serv.man3) Service Manual online
DV-L80S/W
20
FLOW CHART NO.10
Check or replace Q2201.
Set the disc on the disc tray.
Check the V-MUTE line.(Pin3 of D2204)
5V applied to 1 pin of IC2201?
Are the video signals shown above input into
the pins of IC2201?
IC2201 2PIN Y/CR
IC2201 15PIN C/CB
Are the video signal outputted to each pins of
IC2201?
(1)When S1-OUT/VIDEO OUT is selected with the
signal selection switch(Q2201).
IC2201 11PIN CVBS
IC2201 6PIN S-Y
IC2201 12PIN S-C
Check the line between the pins of main unit
IC601 and the pins of IC2201.
IC601 117PIN
→
IC2001 2PIN Y/CR
IC601 118PIN
→
IC2001 15PIN C/CB
No
No
No
Yes
No
Yes
Yes
Picture do not oper
ate nor
mally
.
FLOW CHART NO.11
Check or replace IC6611.
Set disc to DISC tray and play.
Digital sound signal inputted to each pin of
IC6611?
IC6611 38PIN AMCLK
IC6611 40PIN ABCLK
IC6611 41PIN ALRCLK
IC6611 45PIN AOUT0
Check each line between each pin of IC601 and
each input pin of IC6611.
IC601 144PIN
→
IC6611 38PIN AMCLK
IC601 154PIN
→
IC6611 40PIN ABCLK
IC601 153PIN
→
IC6611 41PIN ALRCLK
IC601 149PIN
→
IC6611 45PIN AOUT0
System control signal inputted to each pin of
IC6611?
IC6611 34PIN DAC DA
IC6611 35PIN DAC CK
IC6611 36PIN DAC L
IC6611 37PIN RSTO I
Check or replace IC6611.
Check each line between each pin of IC502 and
IC504 and each input pin of IC6611.
IC502 110PIN
→
IC6611 34PIN DAC DA
IC502 111PIN
→
IC6611 35PIN DAC CK
IC502 112PIN
→
IC6611 36PIN DAC L
IC504 12PIN
→
IC6611 37PIN RSTO I
No
No
Yes
Yes
Yes
Check or replace IC6610.
Yes
Yes
Sound is not given properly from speaker.
Control signal inputted to each in of IC6610?
IC6610 2PIN VOL_UP
IC6610 3PIN VOL_DOWN
IC6610 17PIN VOL_CLK
Check from each pin of IC5502 to each input pin
of IC6610.
IC5502 33PIN
→
IC6610 2PIN VOL_UP
IC5502 4PIN
→
IC6610 3PIN VOL_DOWN
IC5502 58PIN
→
IC6610 17PIN VOL_CLK
No
Yes
Is 15 pin of IC6610 low?
Check the R6665, R6666, R6667, R6669, D6603.
No
Yes
Sound signal inputted to each pin of IC6610?
IC6610 5PIN Lch Input
IC6610 23PIN Rch Input
Check the IC6604, IC6605 and IC6607 and
peripheral circuit.
No
Yes
Charge troubleshooting
Go to item 4.
Charge LED (red) lights on?
1.
Yes
No
No
No
Yes
No
No
Yes
Yes
Yes
No
Power supplied from AC adapter?
Power of main unit can be turned on and off?
Power of main unit OFF?
F9801 fuse is not cut?
Voltage of battery alone is 2V or more?
Replace fuse.
Failure of battery.
Cannot be charged from car adapter.
Failure other than charging.
Cannot be charged when power is ON.
Turn off power and check.
44 pin of IC5502 is H?
6 pin of CN902 is H?
4.
No
No
No
No
Investigate CHG_ON line. Disconnection of
MAIN - charge PWB connection FFC.
Investigate CHG_ON line or breakdown of IC5502.
Yes
Yes
Yes
Yes
2 pin of IC901 oscillating at approx. 200kHz?
19 pin of IC901 oscillating at approx. 200kHz?
Voltage on C901?
Investigate from C901 to battery terminal.
Check around IC901 or breakdown of IC901.
Check around IC901 or breakdown of IC901.
Investigate Q908, D906, L901, and R915.
In the condition that power is supplied from AC adapter and power is off, nothing is connected to battery terminal.
2.
Yes
No
Yes
Yes
No
Yes
No
Voltage of 0V/8.4V generated to battery terminal
cyclically.
"H" voltage on 8 pin of IC5502?
No
"H" voltage on 3 pin of IC5502?
Yes
Investigate CHG_ON line. Charging circuit must
function accompanied by CHG_ON cyclically.
Voltage on 77 pin of IC5502?
44 pin of IC5502 repeating H/L cyclically?
If certain voltage is on, investigate BAT_V line.
When battery is not connected, voltage of 0V/4.2V
is outputted cyclically.
Study on other items.
Investigate line of DCIN_H.
Investigate Car_H line (Must not charge if it is H.)
Only battery is connected. (Assume herein that battery with voltage of 7.4 V is connected.)
3.
Yes
No
No
No
Yes
Voltage of 3.7V on 77 pin of IC5502?
Voltage on 7 pin of CN902?
Yes
No
Yes
1V or less on 9 pin of CN902?
Investigate from 9 pin of CN902 and around Q905.
No problems with this item.
Investigate around IC5504.
Investigate around IC5504 and 7 pin, 8 pin of
CN902.
Click on the first or last page to see other DV-L80 (serv.man3) service manuals if exist.