DOWNLOAD Sharp DX-AT50H (serv.man15) Service Manual ↓ Size: 32.7 KB | Pages: 6 in PDF or view online for FREE

Model
DX-AT50H (serv.man15)
Pages
6
Size
32.7 KB
Type
PDF
Document
Service Manual
Brand
Device
DVD / Troubleshooting
File
dx-at50h-sm15.pdf
Date

Sharp DX-AT50H (serv.man15) Service Manual ▷ View online

– 57 –
DX-AT50H
FLOW CHART NO.11
P-ON 1.8 V is not outputted. 
FLOW CHART NO.12
The disc tray cannot be opened and closed. 
(It can be done using the remote control unit.)
FLOW CHART NO.13
The disc tray cannot be opened and closed.
Is 2.5 V voltage supplied to Pin (1) of IC1002 ?
Is 5 V pulse supplied to Pin (46) of IC2001 when 
the OPEN/CLOSE button is activated on the DVD ?
See FLOW CHART NO. 13. <The disc tray cannot be opened and closed.>
Is the "H" pulse inputted into Pin (4) of IC1002 ?
Replace IC1002.
Replace the DVD Main CBA Unit.
No improvement can be found.
Replace the DVD Mecha.
Check D1013, C1014 and their periphery circuit.
Check PWRCON line.
Check the SW2003 and OPEN/CLOSE button.
The malfunction of the original DVD Main CBA Unit. 
Yes
Yes
No
Yes
No
No
No
Yes
FLOW CHART NO.10
P-ON 3.3 V is not outputted.
Is 3.3 V voltage supplied to the emitter of Q1011 ?
Does the P-CON switch circuit operate normally ?
(Q1005, Q1006, etc.)
Replace Q1011.
Check D1008, D1015, C1007, C1038 and their 
periphery circuit.
Check each component and if poor, then replace.
Yes
Yes
No
No
FLOW CHART NO.9
P-ON 5 V is not outputted. (PON 12 V is outputted normally.)
Is 5 V voltage supplied to the collector of Q1004 ?
Is the "H" pulse inputted into the base of Q1004 ?
Replace Q1004.
Check D1030, D1048, C1035, C1048 and their 
periphery circuit.
Check Q1004, D1046 and the periphery circuit.
Yes
Yes
No
No
DX-AT50H
– 58 –
FLOW CHART NO.15
[No Disc] indicated. (When the focus servo is not functioning.)
FLOW CHART NO.16
[No Disc] indicated. (When the laser beam does not light up.)
FLOW CHART NO.17
Both functions of picture and sound do not operate normally. 
Replace the DVD Main CBA Unit.
Replace the DVD Mecha.
No
Yes
Replace the DVD Main CBA Unit.
Replace the DVD Mecha.
No
Yes
Replace the DVD Main CBA Unit.
Replace the DVD Mecha.
No
Yes
No improvement can be found.
The malfunction of the original DVD Main CBA Unit. 
No improvement can be found.
The malfunction of the original DVD Main CBA Unit. 
No improvement can be found.
The malfunction of the original DVD Main CBA Unit. 
FLOW CHART NO.14
[No Disc] indicated. (When the focus error occurs.)
Replace the DVD Main CBA Unit.
No improvement can be found.
The malfunction of the original DVD Main CBA Unit. 
Replace the DVD Mecha.
No
Yes
– 59 –
DX-AT50H
FLOW CHART NO.18
Picture does not appear normally.
Set the disc on the disc tray, and playback.
Are the following video signals inputted into each 
pin of IC1402 ?
Replace the DVD Main CBA Unit or DVD Mecha .
Is 5V voltage applied to the pin (1, 3, 5, 34) of 
IC1402 ?
Check or replace IC1402 ?
Check the periphery of JK1401 from 
Pins (30) of IC1402.
Check the peripheryof JK1401 from 
Pin (27) of IC1402.
Check the periphery of JK1401 from 
Pin (33) of IC1402.
Check the periphery of JK1602 from 
Pins (18, 21, 24) of IC1402.
Are the following video signals outputted to each 
pin of IC1402 ?
Are the video signals outputted to the specific 
output terminal ?
Are the composite video signals outputted to the 
VIDEO OUT terminal (JK1401) ?
Are the luminance signals outputted to the 
S-OUT terminal (JK1401) ?
Are the chroma signals outputted to the 
S-OUT terminal (JK1401) ?
Are the component video signals outputted to the 
Video OUT terminal (JK1602) ?
Yes
Yes
Yes
No
No
No
No
No
No
IC1402     4 PIN   CVBS
IC1402     6, 12 PIN   S-Y
IC1402     2 PIN   S-C
IC1402   14 PIN   Cb
IC1402   16 PIN   Cr
IC1402   30 PIN    CVBS
IC1402   24, 27 PIN    S-Y
IC1402   33 PIN    S-C
IC1402   21 PIN    Cb
IC1402   18 PIN    Cr
DX-AT50H
– 60 –
FLOW CHART NO.19
Audio is not outputted.
Set the disc on the disc tray and playback.
Are the analog audio signals outputted to each pin 
of IC801 ?
Do the base of Q1203 and Q1204 become the 
"H" level ?
IC801   7 PIN   AUDIO-L
IC801   8 PIN   AUDIO-R
IC1201   1PIN   AUDIO-L
IC1201   7PIN   AUDIO-R
IC1201   2PIN   AUDIO-L
IC1201   6PIN   AUDIO-R
Replace the DVD Main CBA Unit or DVD Mecha.
Replace the DVD Main CBA Unit.
Check or replace IC1201.
Check the periphery between Pins (1,7) of IC1201 
and JK1201.
Check each line between each pin of IC801 
and each pin of IC1201.
IC801   7 PIN 
 IC1201   2 PIN   AUDIO-L
IC801   8 PIN 
 IC1201   6 PIN   AUDIO-R
Are the analog audio signals inputted to each pin 
of IC1201 ?
Are the analog audio signals outputted to each pin 
of IC1201?
Are the audio signals outputted to the specific 
output terminal ?
Are the audio signals outputted to the L/R OUT 
terminal (JK1201) ?
Yes
Yes
Yes
Yes
No
No
No
No
No
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Sharp DX-AT50H (serv.man15) Service Manual ▷ Download

  • DOWNLOAD Sharp DX-AT50H (serv.man15) Service Manual ↓ Size: 32.7 KB | Pages: 6 in PDF or view online for FREE
  • Here you can View online or download the Service Manual for the Sharp DX-AT50H (serv.man15) in PDF for free, which will help you to disassemble, recover, fix and repair Sharp DX-AT50H (serv.man15) DVD. Information contained in Sharp DX-AT50H (serv.man15) Service Manual (repair manual) includes:
  • Disassembly, troubleshooting, maintenance, adjustment, installation and setup instructions.
  • Schematics, Circuit, Wiring and Block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Exploded View and Parts List.