DV-NC70H (serv.man2). Maintenance check items execution time, dissesembly method and operation of pickup - Sharp DVD Service Manual (repair manual). Page 5

<Replacing the Pickup and the Spindle Motor>

Since the Pickup optical axis and turntable inclination of DVD are adjusted with higher accuracy, make a replacement as a
mechanism service chassis ass'y.

Front Side

Sled Motor Lead Wire

Pickup FFC

Traverse Fixing Screw

Loading Motor Lead Wire

Pickup Interface PWB

Pickup FFC

Short Land

<Take out disk>

1. Remove the mechanism with angle from the set. (refer to  33  on page 130. Remove  K , M , N )
2. It is in such cases as the thin driver, and it is pushed in slowly, and a tray is drawn in the arrow direction the Slide Rack on the

left of the base chassis.

3. Take out disk.

<Disassembling and assembling the mechanism chassis>

1. After setting the mechanism chassis to the angle state, ground it to prevent the electrostatic discharge damage of the pickup.
2. Remove the DVD Shield (lower)  40  (refer to the illustration on page 130).
3. Remove  P ,  Q  from the DVD Main PWB Unit  27 . (Pickup Relay FFC 58  isn't removed.) (refer to the illustration on page 130)
4. Remove screws fixing the base chassis (located at the back right and at front left when facing the set).
5. With the Pickup FFC connected, turn over the base chassis and short (solder) two short lands on the pickup interface PWB in

order to prevent the electrostatic discharge damage of the pickup.

6. Remove the Pickup FFC from the Main PWB.
7. Remove the Pickup FFC from the Pickup Interface PWB.
8. Remove the Traverse Fixing Screws to remove the Traverse Chassis ass'y.
Note: After assembling and wiring, remove the solder joint of the short land. If short-circuited, a disk is not played back.