HOW TO DISASSEMBLE BOSE 3.2.1 and 3.2.1GS Series II - Home Entertainment System
Outer Bezel
Removal
Remove the
DVD drawer bezel. To do this, you will need to either apply power to the
console and press the EJECT button, or use the manual DVD drawer eject
function. This is done by placing a
small screwdriver into the front of the slot located in the bottom of the bezel
sub-assembly and rapidly moving the screwdriver toward the rear of the console.
This will press in the built-in eject pin and cause the DVD drawer to open.
Gently
unclip the DVD drawer bezel from the front of the DVD drawer and lift it off.
Close the
DVD drawer. IMPORTANT NOTE: If you close
the drawer manually with no power applied, it will not latch properly. Once you
have repaired the unit, make sure to apply power to the console and cycle the
drawer open and closed to properly latch it in place before returning it to the
customer. Failure to do this will cause the drive to be damaged in shipment.
On the
bottom edge of the outer bezel assembly, lift the bezel edge away from the console
slightly. Lift the top edge of the outer bezel assembly away from the console slightly.
It should lift off and away from the console, revealing the button PCB, the IR PCB
(located below the center of the button PCB) and the display PCB assembly.
Top Cover
Removal.
Place the
console onto a soft surface with the bottom facing upward. Using a Phillips-head
screwdriver, remove the six screws that secure the top cover to the Base.
Grasp the
console between the top and bottom of the unit, ensuring that you have a good
grip on the unit, and carefully flip the console over onto its feet. Lift the
top cover straight off.
Inner Bezel
Sub-assembly Removal (includes Button PCB, IR Receiver PCB and Display PCB)
Unplug the
inner bezel sub-assembly ribbon cables from J6500 and J6700 on the main PCB.
Using a
Phillips-head screwdriver, remove the three screws that secure the bezel to the
console. There is one screw at each end of the bezel and one in the center below
the IR receiver.
Lift off the
bezel. The button PCB, IR receiver PCB and display PCB will come off with the
bezel.
The IR
receiver PCB is connected to the button PCB by a ribbon cable. To remove it, unplug
the ribbon cable at the button PCB end, and use a small flat-tip screwdriver to
push back the small plastic arm that retains the PCB in the bezel. Lift out the
PCB.
The button
PCB is retained in the top of the bezel. To remove it, unplug the IR receiver
PCB ribbon cable and the button PCB ribbon cable. Once the ribbon cable is
unplugged,
press upward on the ribbon cable connector on the underside of the bezel top
edge. The button PCB should slide off of the bezel posts.
The display
PCB assembly is located in the right side of the bezel. To remove it, lay the
bezel face-down. Use a small flat-tip screwdriver to release the display PCB
from the four retaining clips. Lift out the display PCB assembly. Note: The
display PCB assembly is not repairable. You must replace it as an assembly if
it is defective.
Tuner PCB
Removal.
Lift up on
the forward edge and slide it toward the front of the console until the PCB
jacks clear the rear panel. Lift the PCB straight up.
Unplug the
tuner PCB ribbon cable from J6000 on the main PCB.
Re-assembly
Notes:
Make sure
that the RF gasket is in place on the FM antenna connector when re-installing
the PCB assembly.
Make sure
that the FM RF connector is centered in the opening in the rear panel before
tightening the top cover screws.
DVD/CD Drive
Removal
Unplug the
drive power cable from J3202 on the main PCB.
Unplug the
ATAPI cable from J3200 on the main PCB.
Lift the
drive and the drive mounting bracket out of the console. Note: The drive mounting bracket is the plastic
bracket that the drive is mounted to that also goes over the main PCB to
support the tuner PCB.
Make a
note
of the distance the front of the drive overhangs the front edge of the
bracket.
You will need to align the new drive in the same way, within about 1/16”
(2mm). Failure to do this will cause the DVD drive drawer
bezel to not line up properly with the LCD display bezel on the front of
the
console when re-assembled.
Remove the
four screws that secure the drive to the drive mounting bracket. Remove the DVD
drawer eject pin from the manual eject hole in the front of the drive. Retain
this pin for the new drive. Re-assembly Note:
Be sure to install the DVD drawer eject pin into the manual eject hole in the
front of the drive before re-installing the bezel assembly.
CLICK ON THE PICTURES TO MAGNIFY
