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

1-7-3
H9740DC
(S-8)
(S-9)
(S-9)
(S-8)
(S-8)
(L-3)
[9] VCR Chassis Unit
Fig. 5
(S-10)
(S-10)
CN201
CN301
(S-7)
(S-7)
A
Fig. 4
[8] DVD Main
CBA Unit
View for A
Short the three short lands 
by soldering.
(Either of two places.)
Short 
lands
Short lands
FPC Cable
DVD Mecha
OR
Solder
Solder
1-7-4
H9740DC
[12] Power 
SW CBA
Desolder
Lead with blue stripe
(S-11)
Lead with blue stripe
Desolder 
from bottom
(S-12)
(S-13)
(S-11)
[13] Main CBA
[14] Jack-A CBA
[10] Deck 
Assembly
[11] DVD 
Open/Close CBA
FE Head
Cylinder 
Assembly
ACE Head
Assembly
Fig. 6
Desolder
Lead with
blue stripe
From 
FE Head
BOTTOM VIEW
Lead connections of Deck Assembly and Main CBA
Desolder
From
Capstan 
Motor
Assembly
Printing side
Desolder
From
Cylinder 
Assembly
From
ACE Head
Assembly
Lead with
blue stripe
Lead with
blue stripe
Desolder
Lead with
red stripe
[13] Main CBA
SW507
LD-SW
LD-SW
Pin
Hole
Hole
Shaft
Cam Gear
[13] Main CBA
[10] Deck Assembly
Pin
1-7-5
H9740DC
HOW TO EJECT MANUALLY
1. Remove the Top Case.
2. Rotate the roulette in the direction of the arrow as shown below.
3. Pull the tray slowly with a hand.
View for A
Rotate this roulette in 
the direction of the arrow
A
DVD Mecha
1-8-1
H9740EA
General Note: "CBA" is an abbreviation for
"Circuit Board Assembly."
NOTE:
1. Electrical adjustments are required after replacing
circuit components and certain mechanical parts. It
is important to do these adjustments only after all
repairs and replacements have been completed.
Also, do not attempt these adjustments unless the
proper equipment is available.
2. To perform these alignment / confirmation proce-
dures, make sure that the tracking control is set in
the center position: Press either "CHANNEL 
" or
"CHANNEL 
" button on the front panel first, then
the "PLAY" button on the front panel.
Test Equipment Required
1. Oscilloscope: Dual-trace with 10:1 probe,
V-Range: 0.001~50V/Div.,
F-Range: DC~AC-20MHz
2. Alignment Tape (9HSFL6A) (Refer to "SERVICE
FIXTURE AND TOOLS" section.)
Head Switching Position
Adjustment
Purpose:
To determine the Head Switching position during
playback.
Symptom of Misadjustment:
May cause Head Switching noise or vertical jitter in
the picture.
Test point
Adj.Point
Mode
Input
TP751(V-OUT)
TP504(RF-SW)
GND
VR501
(Switching Point)
(MAIN CBA)
Tape
Measurement
Equipment
Spec.
9HSFL6A
Oscilloscope
Connections of Measurement Equipment
Oscilloscope
Main CBA
CH1   CH2
    Trig. (+)
GND
TP504
TP751
PLAY
(SP)
-----
(416 S
64 S)
6.5H   1H
ELECTRICAL ADJUSTMENT INSTRUCTIONS
EXT. Syncronize Trigger Point
1.0H
CH1
CH2
Switching Pulse
V-Sync
0.5H
6.5H
±
1H (416
µ
s
±
64
µ
s)
Figure 1
Reference Notes:
Playback the Alignment tape and adjust VR501 so that
the V-sync front edge of the CH1 video output waveform
is at the 6.5H
±
1H (416
µ
s
±
64
µ
s) delayed position from
the rising edge of the CH2 head switching pulse
waveform.
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