DOWNLOAD Sharp DV-660H (serv.man2) Service Manual ↓ Size: 1.96 MB | Pages: 51 in PDF or view online for FREE

Model
DV-660H (serv.man2)
Pages
51
Size
1.96 MB
Type
PDF
Document
Service Manual
Brand
Device
DVD / start to section 13-4
File
dv-660h-sm2.pdf
Date

Sharp DV-660H (serv.man2) Service Manual ▷ View online

DV-660S
DV-660H
2. Remove two screws (B).
3. Remove one screw (C).
4. Release the hooks of the front panel at two places on both sides
and at three places on the bottom, and slide the front panel toward
you.
5. Disconnect the connectors (D) and (E).
6. Remove four screws (F) which installs the mechanical unit.
7. Disconnect the lead lines (G) and (H) and (J)  from the main PWB
under the mechanism.
8. Remove two screws (K) on both sides of the terminal angle
frame.
9. Remove three screws (L) which install the terminal PWB.
10. Remove seven screws (M) and one screw (N) which install the
terminal block.
11. Remove three screws (P) of the display PWB.
12. Remove two screws (Q) of the decorative leg.
13. Push out the middle pin (R) of the setting leg in the direction
opposite to insertion. (Two places)
14. Remove two screws (S) which install the main PWB under the
mechanical unit.
15. Remove three screws (T) which install the volume PWB of the
front panel.
16. Remove three screws (U) which install the operate PWB.
* The spacer and insulation seat under the indication tube of (V)
and (W) are bonded with both-side sticking tape.
17. Remove one washe (X) and one nut (Y) which install the shuttle
knob.
Top Cabinet
(A) x2 
1
(A) 
2
(A) x2 
1
6. DISASSEMBLY AND REPLACEMENT OF MAIN PARTS
6-1. DISASSEMBLY
1. Remove five screws (A), and remove the cabinet.
Note: When assembling it, tighten the screws in order of  1 - 2 .
(Because the set may rise a little by tightening the screws.)
(F) x4
(D)
(B) x2
(E)
Hook
Front panel
Hook
(C)
(X)
Shuttle knob
(Y)
Operate PWB
(U) x3
(V)
(W)
(T) x3
Volume PWB
(L)
(S)
(S)
(G)
(H)
(J)
(L)
(P) x3
Mechanism
Main PWB
Display PWB
Terminal PWB
21-Pin 
Euro-SCART PWB
(Q) x2
(R) x2
(N)
(M) x7
(L)
(K) x2
6-1
DV-660S
DV-660H
6-2. REPLACEMENT OF MAIN PARTS
<Disassembling and assembling procedure>
· Removing the tray (emergency ejection)
Removing the tray lock (set state)
VIDEO
Tray Decoration Panel
Insert a thin plate into the hatching part, slowly move the it in the arrow direction so that the tray is moved out a little in the arrow direction.
Note: In this state the tray cannot be removed completely.
· Drive Unit State
VIDEO
Tray Decoration Panel
Slowly move in the arrow direction, using the screwdriver having a fine head.
<Disassembling and assembling the mechanism chassis>
1. Remove the pickup FPC and loading relay FFC  A  from the main PWB.
Note: Fit the conductive rubber cap to the front end of pickup FPC (short-circuit).
2. Remove the solder joint of loading relay PWB at drive unit rear side.
1
Sled motor lead wire (Yellow·Orange)
2
IN SW lead wire 2 (White)
3
Spindle motor lead wire (Red·Black)
4
Loading motor lead wire (Red·Black)
5
Remove each lead wire from the claw.
1
1
2
3
4
3
2
4
A
B
C
SLmotor 1
SLmotor 2
SW
GND
SP1
SP2
L motor2
L motor2
Black
Red
Red
Black
White
White
Orange
Yellow
Remove the lead wire.
Remove the lead wire.
3. Remove the relay PWB mounting screw  B  (M2.6S + 6S S tight), and remove the relay PWB  C .
Relay PWB
Rear side of moving chassis assembly
Conductive rubber cap
(Earth sponge)
4. Disassembling the mechanism chassis moving chassis assembly
(1) Remove the four M2.6 screws  A  , and remove the clamped top plate  B .
P tight screw
with M2.6 washer
A
A
B
(2) Remove the M2.6 screw  C  .
(3) Holding aslant upward the mechanism chassis moving chassis assembly  D  in the arrow direction, remove.
Note: The slide rack  E  must be moved to the left side as shown in diagram.
Take care so that the lead wires, especially the earth sponge  G  at the pickup FPC   F  front end, must not beremoved.
Slide rack
Mechanism chassis moving
chassis assembly
P tight screw with
M2.6 washer
G
C
F
E
D
Clamper top
plate rear side
6-2
DV-660S
DV-660H
8. Replacing the Sled Motor
(1) At the rear side of chassis remove the two M1.7 screws  A  , and remove the motor angle  B  .
(2) Remove the thrust holding screw  C   (for easier removing wipe off the thread lock).
(3) Remove the two motor fitting screws M1.4  D  , and replace the motor  E  . Motor is replaced in the state while the worm  F  is
kept press-fitted to the output shaft.
Note: When installing the motor, take care so that the worm does not damage the ANG  B  hole.
(4) Screw in the thurust holding screw  C  , adjust the worm front end clearance to 0 to 0.1 mm, and apply screw lock.
5. Disassembling the loading drive system
(1) Remove the two M2 screws  A  .
(4)
Remove relay gear 2  E  .
(2) Remove the tray pinion  B  .
(5)
Remove the two M1.7 screws  F  .
(3) Remove the relay gear 1  C   together with the
(6)
Remove the L motor  G  (with pulley) downward.
timing belt S  D  .
M2
M1.7
L·Motor Pulley
L·Motor
Timing belt S
Relay
gear1
Relay
gear2
Tray pinion
A
B
E
C
D
G
F
6. Disassembling the mechanism chassis from the moving chassis
(2) Remove the insulator  B  (2 pcs. at the right side in diagram) parallel in the arrow direction.
(At this time it is better to insert the fine head of screw driver at the ID side of insulator and to move in the arrow direction, which
facilitates removal.)
(3) Remove the mechanism chassis in the arrow direction, pulling upward aslant.
At this time take care so that the insulator  C  (left side, 2 pcs.) is not damaged. (Do not put at once the mechanism chassis
assembly.)
Insulator
Insulator
Insulator
Insulator
Mechanism chassis
C
B
B
C
7. Replacing the pickup and the spindle motor
Since the pickup optical axis and turntable inclination of DVD are adjusted with higher accuracy than of CD/MD, make a replacement
as a mechanism service chassis ass'y (refer to Parts List).
Thurust holding screw
Apply screw-lock.
M1.4 screw
M1.7 screw
Motor Angle
B
A
D
Worm F
Sled motor E
C
Mecha chassis Ass'y
6-3
DV-660S
DV-660H
7. EXPLANATION OF MECHANISM
(1) Tray loading mechanism
When the tray loading motor rotates counterclockwise, motion is transmitted to the slide rack  D  through the intermediate
gear 1  A  , intermediate gear 2   B   and tray pinion  C  , resulting in insignificant motion in the arrow direction.
The slide rack is linked with the operating chassis. It lowers the pickup mechanism.
The protrusion of slide rack   E   is linked with the tray through the groove at the rear side of tray, so that the tray is
pushed ahead a little. When the tray is pushed out, the slide rack is disconnected from the tray pinion, and at the same
time the gear at the rear side of tray is connected with the tray pinion, and the tray is pushed ahead.
When the tray is pushed out fully, the slide rack moves further in the arrow direction through the groove at the rear side
of tray. The tray position detection switch  F  is turned on, and the tray loading motor stops.
When the tray closes the operation is as follows. If the tray OPEN/CLOSE button or tray is pressed and the detection
switch is turned off, the tray loading motor rotates clockwise, so that the tray is retracted. When the detection switch
is turned on again, the tray loading motor stops.
Intermediate gear 2
Intermediate gear 1
Tray pinion
Pawl linked with the groove at the 
rear side of tray
This groove is linked with the pawl of 
pickup mechanism.
Tray position detection switch
Slide rack
F
D
E
B
C
A
Sled motor
Pickup
Sled pinion
Rack
Pickup
Position detection
switch
Spindle motor
E
C
B
A
D
(2) Pickup feed mechanism
When the sled motor  A  rotates, the rack  C  moves through the sled pinion  B  so that the pickup  D  is moved to the
internal or external periphery.
When it is moved to the innermost periphery, the position detection switch   E    is pushed by the rack, so that the position
of pickup is initialized.
(3) Disc rotation mechanism
The spindle motor is used to rotate.
IC701 is used to control.
When the spindle motor is replaced, replace the
spindle unit.
7-1
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