DOWNLOAD Sharp DV-NC100H Service Manual ↓ Size: 1.52 MB | Pages: 48 in PDF or view online for FREE

Model
DV-NC100H
Pages
48
Size
1.52 MB
Type
PDF
Document
Service Manual
Brand
Device
DVD / Cover, Contents, , Laser beam safety precautions, Important safeguards and precautions, Standard notes for servicing, Preparation for servicing, Operating controls and functions, Cabinet disassembly instructions, Electrical adjustment instructions, Firmware renewal mode, Troubleshooting, Block diagrams, Function indicator symbols, Main Schematic diagram 1 9.
File
dv-nc100h.pdf
Date
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Sharp DV-NC100H Service Manual ▷ View online

1-10-3
H9741TS
Yes
Yes
Yes
Yes
No
No
No
No
FLOW CHART NO.14
DVD-P-ON+12V is not outputted.  (AL+12V is outputted normally.)
FLOW CHART NO.11
Replace Q1053.
No
Yes
Is the "L" pulse (approximately 0V) outputted to 
the collector of Q1054?
Check Q1054 and PWRCON line, and service it if 
defective.
FLOW CHART NO.13
DVD-P-ON+3.3V is not outputted. (EV+3.3V is outputted normally.)
Is the "H" pulse (approximately 4V) inputted to 
the base of Q1052?
Replace Q1052.
See FLOW CHART NO.11. <DVD-P-ON+12V is 
not outputted. >
Yes
No
FLOW CHART NO.12
DVD-P-ON+5V is not outputted. (AL+5V is outputted normally.)
Is the "H" pulse (approximately 6V) inputted to 
the base of Q1055?
Replace Q1055.
See FLOW CHART NO.11. <DVD-P-ON+12V is 
not outputted. >
Yes
No
The fluorescent display tube does not light up.
Is 3.3V voltage supplied to Pin(6, 24) of IC612?
Is approximately -24V to -28V voltage supplied to 
Pin(15) of IC612?
Is there approximately 500kHz oscillation to 
Pin(26) of IC612?
Are the filament voltage applied between (1, 2)
and (29, 30) of the fluorescent display tube?
Also negative voltage applied between these pins 
and GND?
Replace the fluorescent display tube (IC611).
Check the EV+3.3V line and service it if defective.
Check the -FL line and service it if defective.
Check R618, IC612 and their periphery, and 
service it if defective.
Check the power circuit, D1016, D1017, 
R1040, C1018 and their periphery, and 
service it if defective.
1-10-4
H9741TS
2. DVD Section
Yes
No
FLOW CHART NO.1
The key operation is not functioning.
Are the contact point and the installation state of 
the key switches (SW2020, SW2021, SW2022) normal?
When pressing each key switches (SW2020, 
SW2021, SW2022), do the voltage of each pin 
of CL1051 (shown below) change to "H" (3.3V) 
from "L" (0V)?
SW2020 
→
 CL1051  24PIN
SW2021 
→
 CL1051  26PIN
SW2022 
→
 CL1051  25PIN
Check the key switches (SW2020, SW2021, 
SW2022) and their periphery, and service it if 
defective.
No
Re-install the key switches (SW2020, SW2021, 
SW2022) correctly or replace the poor switch.
FLOW CHART NO.2
No DVD operation is possible from the remote control unit. (Operation is possible from the unit.)
Replace the RM2001 (remote control receiver).
Replace remote control unit if needed.
Check the line between the RM2001 (remote 
control receiver) and Pin(22) of CL1051, and 
service it if defective.
Is the "L" pulse sent out from Pin(1) terminal of the 
RM2001 (remote control receiver) when the remote 
control unit is activated?
Is the "L" pulse signal supplied to Pin(22) of 
CL1051?
Replace the DVD Main CBA.
Yes
Yes
Replace DVD Main CBA.
Yes
Yes
Is 5V voltage supplied to Pin(3) terminal of the 
RM2001 (remote control receiver)?
Yes
No
Check AL+5V line, and service it if defective.
No
No
FLOW CHART NO.3
The disc tray cannot be opened and closed. (It can be done using the remote control unit.)
Does the voltage of Pin(24) on CL1051 become 
3.3V when pressing "OPEN/CLOSE" button on 
the unit?
Refer to "FLOW CHAR NO.4" <The disc tray 
cannot be opened and closed.>
Replace the "OPEN/CLOSE" button (SW2020).
No
Yes
FLOW CHART NO.4
The disc tray cannot be opened and closed. (It can not be done using the unit and the remote control unit.)
Replace the DVD Main CBA.
Original DVD Main CBA is poor.
Replace the DVD Mechanism.
No improvement can be found.
No
1-10-5
H9741TS
FLOW CHART NO.5
The [No Disc] indication.
Yes
Replace the DVD Main CBA.
Original DVD Main CBA is poor.
Replace the DVD Mechanism.
No improvement can be found.
No
FLOW CHART NO.6
Both picture and sound do not operate normally.
Yes
Replace the DVD Main CBA.
Original DVD Main CBA is poor.
Replace the DVD Mechanism.
No improvement can be found.
No
1-10-6
H9741TS
FLOW CHART NO.7
Picture does not appear normally. 
Set the disc on the disc tray, and playback.
Are the video signals outputted to each pin of 
CN1601 on the Main CBA?
Replace the DVD Main CBA or the DVD 
Mechanism.
Check the line between each pin of CN1601 and 
each pin of IC1403 and IC102 on the Main CBA, 
and service it if defective.
Is 5V voltage supplied to the Pin(4) of IC1403?
Replace IC1403.
Replace IC102.
Check DVD-P-ON+5V line 
and service it if defective.
Check AL+5V line 
and service it if defective.
Check the periphery of JK101 from Pins (10, 11, 
15) of IC102 and service it if defective.
Check the periphery of JK1401 from 
Pin (5) of IC1403 and service it if defective.
Check the periphery of JK1401 from 
Pin (7) of IC1403 and service it if defective.
Are the composite video signals outputted to 
Pin(4) of IC751?
CN1601     1PIN 
→
 IC1403     3PIN     S-Y
CN1601   10PIN 
→
 IC1403     1PIN     S-C
CN1601     4PIN 
→
 IC102       8PIN     R
CN1601     8PIN 
→
 IC102       6PIN     G
CN1601     6PIN 
→
 IC102       1PIN     B
Are the video signals shown above inputted into 
each pin of IC1403 and IC102?
Are the video signals outputted to each pin 
of IC1403 and IC102?
Are the video signals outputted to the specific 
output terminal?
Are the RGB video signals outputted to the 
Scart jack (JK101)?
Are the luminance signals outputted to the 
S-OUT terminal (JK1401)?
Are the chroma signals outputted to the 
S-OUT terminal (JK1401)?
Yes
Yes
Yes
No
No
No
Is 5V voltage supplied to the Pin(4,12) of IC102?
No
No
Yes
No
Yes
No
No
No
CN1601     1PIN    S-Y
CN1601   10PIN    S-C
CN1601     4PIN    R
CN1601     8PIN    G
CN1601     6PIN    B
IC1403     3PIN    S-Y
IC1403     1PIN    S-C
IC102       8PIN    R
IC102       6PIN    G
IC102       1PIN    B
IC1403     6PIN    CVBS
IC1403     5PIN    S-Y
IC1403     7PIN    S-C
IC102     10PIN    R
IC102     11PIN    G
IC102     15PIN    B
Replace IC751.
Replace IC501.
Are the composite video signals outputted to 
Pin(19) of JK101 (Scart jack)?
Check the line between Pin(4) of IC751 and JK101 
and service it if defective.
Are the "H" pulse inputted into Pins(9,10,11) of IC751?
No
Yes
Yes
No
No
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