DV-NC65H (serv.man13). Adjustment, replacement and assembly of mechanical units - Sharp DVD Service Manual (repair manual)

dv-nc65h (serv.man13) service manual
Model
DV-NC65H (serv.man13)
Pages
23
Size
1.12 MB
Type
PDF
Document
Service Manual
Brand
Device
DVD / Adjustment, replacement and assembly of mechanical units
File
dv-nc65h-sm13.pdf
Date

Read Sharp DV-NC65H (serv.man13) Service Manual online

20
DV-NC65H/S
DV-NC70H
Video
Audio
HiFi Audio
Track
625 Monoscope
6 kHz
35 
µm
VROCPSV
CK
11.
JiGHMEC-M005
CK
10.
JiGDRiVER-6
BM
9.
JiGDRiVERH-4
AP
4.
Torque Driver
JiGTD1200
CB
8. ADJUSTMENT, REPLACEMENT AND ASSEMBLY OF MECHANICAL UNITS
The explanation given below relates to the on-site general service (field service) but it does not relates to the adjustment
and replacement which need high-grade equipment, jigs and skill. For example, the drum assembling, replacement and
adjustment service must be performed by the person who have finished the technical courses.
8-1. MECHANISM CONFIRMATION ADJUSTMENT JIG
So as to perform completely the mechanism adjustment prepare the following special jigs. So as to maintain the initial
performance of the machine the maintenance and check are necessary. Utmost care must be taken so that the tape is
not damaged. If adjustment needs any jig, be sure to use the required jig.
JiGTG1200
CN
JiGMP0001
BY
1.
Torque Cassette Meter
JiGVHT-063
CZ
No.
Jig ltem
 Part No.
Code
Configuration
Remarks
JiGTG0090
CM
3.
Torque Gauge Head
JiGTH0006
AW
JiGRH0002
BR
JiGSG2000
BS
JiGSG0300
BF
7.
JiGADP003
BK
Tension Gauge
These Jigs are used for checking
and adjusting the reel disk height.
When fixing any part to the threaded
hole using resin with screw, use the
jig. (Specified torque 5 kg)
This cassette torque meter is used for check-
ing and adjusting the torque of take-up for
measuring tape back tension.
These Jigs are used for checking
and adjusting the torque of take-up
and supply reel disks.
Master Plane Jig and
Reel Disk Height
Adjusting Jig
Pinch pressing force
measuring jig
This Jig is used with the tension
gauge. Rotary transformer clearance
adjusting jig.
There are two gauges used for the
tension measurements, 300 g and
2.0 kg.
This tape is especially used for elec-
trical fine adjustment.
This screwdriver is used for adjusting the
guide roller height.
For X value adjustment
This Jig is used for adjustment
of tension pole.
X value adjustment
gear driver
Tension Pole
Adjustment Driver
625 Monoscope
6 kHz
and
and
49 
µm
Colour bar
1 kHz
2.
Torque Gauge
6.
5.
8.
Alignment Tape
Guide roller height
adjustment driver
21
DV-NC65H/S
DV-NC70H
8-2. MAINTENANCE CHECK ITEMS AND EXECUTION TIME
Perform the maintenance with the regular intervals as follows so as to maintain the quality of machine.
NOTE           : Part replacement.        : Cleaning        : Apply grease 
<Specified> Cleaning liquid Industrial ethyl alcohol
 * This mechanism does not need electric adjustment with variable resistor. Check parts. If any deviation is found, 
clean or replace parts.
Maintained
Parts
Remarks
500
hrs.
1000
hrs.
1500
hrs.
2000
hrs.
Possible symptom 
encountered
Guide roller ass’y
Sup guide shaft
Reverse guide
Slant pole on pole base
Full erase head
A/C head
Upper and lower drum ass’y
Capstan D.D. motor
Pinch roller
Reel belt
Tension band ass’y
Loading motor
Idler ass’y
Limiter pulley
Supply/take-up main brake levers
AHC (Automatic head cleaner)
Colour and beating 
Small sound or sound 
distortion
Poor S/N ratio, no colour
Poor flatness of the 
envelope with alignment 
tape
No tape running, 
uneven color
No tape running, tape 
slack
No tape running, tape 
slack, no fast forward/
rewind motion
Lateral noises Head 
occasionally blocked
Abnormal rotation or significant 
vibration requires replacement.
Clean tape contact part with the 
specified cleaning liquid.
Clean tape contact area with the 
specified cleaning liquid.
Clean rubber and rubber contact 
area with the specified cleaning 
liquid.
Replace the roller of the cleaner 
when it wears down.
Just change the AHC roller 
assembly for new one.
Screen swaying
Cassette not loaded or 
unloaded
No tape running, tape 
slack
Tape slack
Video head cleaning procedure
1. Apply one drop of cleaning liquid to the cleaning paper with the baby oiler.
2. Gently press the cleaning paper against the video head to fix your finger, and move the upper drum so that each head
is passed to and fro 5 times (do not move the cleaning paper).
3. Wipe with the dry cleaning paper.
Notes :
• Use the commercially available ethanol of Class 1 as
cleaning liquid.
• Since the video head may be damaged, do not move up
and down the cleaning paper.
• Whenever the video head is cleaned, replace the clean-
ing paper.
• Do not apply this procedure for the parts other than the
video head.
Parts Code
Description
Code
ZPAPRA56-001E
Cleaning Paper
AW
ZOiLR-02-24TE
Babe Oiler (Spoit)
AH
Gently press the cleaning paper to 
fix with your finger, and rotate the 
upper drum to clean.
Move to and fro 5 times for each head.
(Do not move the cleaning paper.)
Rotate the upper drum 
with one hand.
22
DV-NC65H/S
DV-NC70H
8-3. FUNCTION OF MAJOR MECHANICAL PARTS (TOP VIEW)
No.
Function
No.
Function
1
Full erase head
2
Supply pole base ass’y
3
Tension arm ass'y
4
Idler wheel ass’y
5
Open guide
6
Supply reel disk
7
Supply main brake
8
Take-up main brake ass'y
9
Pinch drive cam
10
A/C head ass’y
11
Reverse guide lever ass’y
12
Reel relay gear
13
Take-up reel disk
14
Pinch roller lever ass’y
15
Drum ass'y
16
Loading motor
17
Drum motor
18
Take-up pole base ass'y
26
Auto head cleaner Ass'y
17
15
26
11
5
9
14
12
8
16
13
4
6
2
7
3
1
18
10
23
DV-NC65H/S
DV-NC70H
FUNCTION OF MAJOR MECHANICAL PARTS (BOTTOM VIEW)
No.
Function
No.
Function
19
Syncro Gear
20
Master cam
21
Capstan D.D. motor
22
Reel belt
23
Clutch lever
24
Limitter pulley ass’y
25
Shifter
25
24
21
22
19
20
23
Page of 23
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Download Sharp DV-NC65H (serv.man13) Service Manual (Repair Manual)

Here you can read online and download Sharp DV-NC65H (serv.man13) Service Manual in PDF. DV-NC65H (serv.man13) service manual will guide through the process and help you recover, restore, fix, disassemble and repair Sharp DV-NC65H (serv.man13) DVD. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.