Denon DVD-3800 Service Manual page 8

How to Replace Traverse Unit
1. Preparing for Replacement
(1) Removing Clamp Base Damper
Remove 4 pcs of 2.6mm machine screw (a), and detach
the Clamp Base Damper upward.
(2) Removing Clamp Base
Remove 6 pcs of 3mm P-tight screw (b), and detach the
Clamp Base upward.
(3) Ejecting Loader
Through the left rectangular hole of the Mechanism Unit,
push the slider with a ruler or screwdriver until the
Traverse portion lowers and the Loader comes out a little.
(4) Removing Loader
• Remove 2 pcs of 3mm P-tight screw (c) on the Loader
Holder left.
• Remove 2 pcs of 3mm P-tight screw (d) on the Loader
Holder right, then pull up the Bearing Plate.
• Fully pull out the Loader forward, and lift up to take it
out.
(5) Shorting Pickup
To protect the Pickup from static electricity, short-circuit
2 positions as shown in figure.
(6) Removing Main P.W.B. Ass'y
Remove 4 pcs of 3mm P-tight screw (e), and detach the
Main P.W.B. Ass'y downward.
2. Replacing Traverse Unit
(1) Removing Wires
• CX241: 24P-FFC for Pickup
• CX151: 15P-FFC for Spindle
• CX031: 3P-PH wire for PU Slide
(2) Removing Traverse Unit
Remove 4 pcs of special screw (f) and dampers, then
take out the Traverse Unit upward.
(3) Mounting Traverse Unit
Mount the Traverse Unit following the reverse order.
(a)
Clamp Base Damper
Clamp Base
(b)
(d)
(c)
Holder
A
(3)
Main P.W.B. Ass'y
Solder to short-circuit (CD)
(e)
Short-circuit with solder (enlarged fig. A)
(f)
DVD-3800
Bearing Plate
Loader
(4)
Solder to short-circuit (DVD)
Traverse Unit
Damper
8