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
PREV: Sharp DV-L88 (serv.man43) Service Manual / Technical Bulletin

Sharp DV-NC100H Service Manual ▷ View online

1-10-7
H9741TS
FLOW CHART NO.8
Audio is not outputted.
Set the disc on the disc tray, and playback.
Are the analog audio signals outputted to each pin 
of CN1601 on Main CBA?
Is the "H" level mute signals outputted to CN1601 
on the Main CBA ?
CN1601  14PIN    AUDIO-L
CN1601  16PIN    AUDIO-R
CN1601  13PIN    DVD-A-MUTE
CN1601  15PIN    DVD-A(R)-MUTE
IC1201    7PIN    AUDIO-L
IC1201    1PIN    AUDIO-R
IC1201    6PIN    AUDIO-L
IC1201    2PIN    AUDIO-R
Replace the DVD Main CBA or the DVD Mechanism.
Replace the DVD Main CBA or the DVD Mechanism.
Replace IC1201.
Check the periphery between Pins(1,7) of IC1201 
and JK751, and service it if defective.
Check each line between each pin of CN1601 
and each pin of IC1201 on Main CBA, and service 
it if defective.
CN1601  14PIN 
→
 IC1201    6PIN    AUDIO-L
CN1601  16PIN 
→
 IC1201    2PIN    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 (JK751)?
Are the audio signals outputted to Pins(1, 3) of
JK101 (Scart jack)?
Yes
Yes
Yes
No
No
Yes
No
No
No
No
No
Are the audio signals outputted to Pin(14,15) of 
IC751?
No
Replace IC501.
Replace IC751.
Check the line between Pin(14,15) of IC751 and JK101, 
and their periphery, and service it if defective.
Are the "H" pulse inputted into Pins(9,10,11) of IC751?
Yes
Yes
1-10-8
H9741TS
3. VCR Section
Yes
Yes
No
No
FLOW CHART NO.1
FLOW CHART NO.2
The key operation is not functioning.
Are the contact point and the installation state of 
the key switches normal?
Is the control voltage normally inputted into 
Pins(7,8) of IC501?
Re-install some key switches correctly or
replace some key switches.
Check the key switches and their periphery, and 
service it if defective.
Replace IC501.
0.51
0.92
1.27
1.61
1.98
2.39
2.90
3.60
4.30
-----
-----
-----
-----
S-INH
FF
REW
-----
-----
-----
-----
CH UP
OUTPUT
SELECT
STOP
/EJECT
PLAY
CH 
DOWN
POWER
REC/OTR
Terminal voltage of IC501-7,8
KEY-1
IC501-7
KEY-2
IC501-8
(V)
Replace the RM2001 (remote control receiver).
Replace remote control unit if need.
Check the line between the RM2001 (remote 
control receiver) and the Pin(14) of IC501, and 
service it if defective.
Replace IC501.
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 the Pin(14) of  
IC501?
Yes
Is 5V voltage supplied to the Pin(3) terminal of
the RM2001 (remote control receiver)?
Yes
Yes
No
Check AL+5V line and service it if defective.
No
No
No VCR operation is possible from the remote control unit. (Operation is possible from the unit.)
1-10-9
H9741TS
FLOW CHART NO.3
FLOW CHART NO.4
Cassette tape can not be loaded.
Cassette tape is ejected right after the loading.
FLOW CHART NO.5
Cassette tape can not be ejected.
When loading a cassette tape, on Pin(10) of 
IC501, does the "L" pulse switch to the "H" pulse?
When loading a cassette tape, on Pin(10) of IC501, 
does the "L" pulse switch to the "H" pulse?
When loading a cassette tape, on Pin(4) of IC501, 
does the "L" pulse switch to the "H" pulse?
When pressing the eject button, does the Capstan
Motor start rotating?
Refer to "FLOW CHART NO.6 " <The Capstan 
Motor does not rotate>.
Check the Reel Disc or Reel Drive Unit, and 
service it if defective.
Replace IC501.
Replace the Capstan Motor unit.
Replace the Loading Motor unit.
While the Capstan Motor is rotating, is the Takeup
Reel rotating?
Is the Loading Motor rotating?
Check the Cassette Cam or Cassette Gear, etc, 
and service it if defective.
While the Takeup Reel is rotating, is the reel pulse 
signal inputted to Pin(80) of IC501?
While the reel pulse signal is inputting, is "L" pulse 
outputted to Pin(81) of IC501?
Is the specified voltage (approximately 13V) 
outputted to the terminal of the Lading Motor Unit?
When loading a cassette tape, does the LD-SW 
operate normally?
When loading a cassette tape, is the specified 
voltage (approximately 13V) outputted to the 
terminal of the Loading Motor Unit?
Check the line between the start sensor and 
Pin(10) of IC501, and service it if defective.
Replace the Capstan Motor Unit.
Replace the Loading Motor Unit.
Replace IC501.
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Check the line between the start sensor and 
Pin(10) of IC501, and service it if defective.
Check the line between the end sensor and 
Pin(4) of IC501, and service it if defective.
Check the line between the LD-SW(SW507) and 
Pin(9) of IC501, and service it if defective.
Check the line between the Takeup Reel sensor 
and Pin(80) of IC501, and service it if defective.
No
No
No
No
No
No
No
No
No
No
1-10-10
H9741TS
D-FG
D-PG
5Vp-p
2.5Vp-p
FLOW CHART NO.6
Capstan Motor does not rotate.
FLOW CHART NO.7
Drum Motor does not rotate.
FLOW CHART NO.8
Drum Motor rotates only for a few seconds.
FLOW CHART NO.9
RF-SW signal is not outputted.
Is the Drum Motor rotating?
Is 5V voltage supplied to Pin(2) of CN502?
Is 12V voltage supplied to Pin(1,11) of CN502?
Replace the Capstan Motor Unit.
Is over approximately 2.6V voltage supplied to 
Pin(5) of CN502?
Check the P-ON+5V line and service it if defective.
Check the line between Pin(5) of CN502 and 
Pin(76) of IC501, and service it if defective.
Check the AL+12V line and service it if defective.
Check the AL+12V line and service it if defective.
Check the AL+12V line and service it if defective.
Check the P-ON+5V line and service it if defective.
Check the line between Pin(8) of CN502 and 
Pin(77) of IC501, and service it if defective.
Replace IC501.
No
No
No
No
No
No
No
No
No
No
No
Yes
Yes
Yes
Is 5V voltage supplied to Pin(2) of CN502?
Is the drum PG/FG signal inputted to Pin(90) of IC501?
Is the drum PG/FG signal inputted to Pin(90) of IC501?
Is 12V voltage supplied at Pin(1,11) of CN502?
Is the RF-SW signal outputted to Pin(18) of IC501?
Is 12V voltage supplied Pin(1,11) of CN 502?
Replace the Capstan Motor Unit or Cylinder 
Assembly.
Replace the Capstan Motor Unit or the Cylinder 
Assembly.
Replace the Capstan Motor Unit or the Cylinder 
Assembly.
Replace the Capstan Motor Unit or the Cylinder 
Assembly.
Refer to "FLOW CHART NO.7" <Drum Motor does 
not rotate> and "FLOW CHART NO.8" <Drum 
Motor rotates only for a few seconds>.
Is over approximately 2.6V voltage supplied to 
Pin(8) of CN502?
Yes
Yes
Yes
Yes
Replace IC501.
Yes
Yes
Yes
Yes
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