Pioneer ]S-2EX, Service Manual

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S-2EX
2.3 NETWORK ASSY
Before removing the Network Assy, remove the grille and each speaker unit then disconnect the cords from the
speaker unit.
• For removal/reattachment of the Network Assy for the woofer: Only the woofer must be removed.
• For removal/reattachment of the Network Assy for the midrange/tweeter: Removal of all the units is required.
2.3.1 Network Assy for the Woofer
• The Network Assy for the woofer is attached to the
inside of the bottom board, using 4 screws.
(1) Remove the acoustic absorbent pads from around the
input terminals. (See Figs. 2-5 to 2-8.)
(2) Remove the 2 nuts that secure the round connectors
from the lower input terminals.
(See Fig. 2-1. Tool: Box wrench, 14 mm/GGH-002)
(3) Remove the 4 screws that secure the Network Assy
then pull the Assy out through the hole where the
woofer was attached.
(See Fig. 2-2.)
(4) When reattaching, pass the Network Assy through the
hole where the woofer was attached then secure it in
place with the 4 screws.
(See Fig. 2-2.)
(5) Among the 2 pairs of cords from the Network Assy,
connect the cords with the round connectors to the
lower input terminals and secure them with the nuts.
(See Fig. 2-1. Tool: Box wrench, 14 mm/GGH-002)
(6) Apply adhesive to the secured nuts.
(Adhesive: DIABOND black/GYL-014)
(7) Reinstall the acoustic absorbent pads around the input
terminal board. (See Figs. 2-5 to 2-8.)
(8) Connect and solder the remaining cords from the
Network Assy to the woofer and reattach the woofer in
the cabinet.
2.3.2 Network Assy for the midrange /
tweeter
• The Network Assy for the midrange/tweeter is attached to
the inside of the left side board behind the woofer, using
4 screws.
(1) Remove the acoustic absorbent pads from around the
input terminal board, inside and at the rear of the
chamber, and behind the chamber.
(See Figs. 2-5 to 2-8 and 2-9 to 2-11.)
(2) Remove the 2 nuts that secure the round connectors
from the upper input terminals.
(See Fig. 2-1. Tool: Box wrench, 14 mm/GGH-002)
(3) Remove the 4 screws that secure the closure panel
inside the chamber, remove the 4 screws that
secure the Network Assy, and pull the Network Assy
out through the hole where the woofer was attached.
(See Figs. 2-3 and 2-4. Tool: Screwdriver/GGK1012)
(4) When reattaching, pass the Network Assy through the
hole where the woofer was attached and secure it in
place using the 4 screws.
(See Fig. 2-3. Tool: Screwdriver/GGK1012)
(5) Among the cords from the Network Assy, connect the
cords with the round connectors to the upper input
terminals and secure them with the nuts.
(See Fig. 2-1. Tool: Box wrench, 14 mm/GGH-002)
(6) Apply adhesive to the secured nuts.
(Adhesive: DIABOND black/GYL-014)
(7) Pass the 2 pairs of cords from the closure panel
through behind the chamber then secure the closure
panel from inside the chamber, using the 4 screws.
(See Fig. 2-4.)
(8) Reinstall the acoustic absorbent pads around the input
terminals, at inside and rear of the
chamber, and behind the chamber.
(See Figs. 2-5 to 2-8 and 2-9 to 2-11.)
(9) Connect and solder the cords to the coaxial-unit
speaker and reattach it in the cabinet.
Fig. 2-1: Input terminals (inside the cabinet)
Fig. 2-2: Specifications for attaching
the Network Assy for the woofer Fig. 2-3: Specifications for attaching the
Network Assy for the midrange/tweeter
Fig. 2-4: Specifications for attaching the
closure panel (cross-sectional view of the
coaxial-unit speaker)
+: White with Black line
: Screws : Screws
: Screws
Chamber
Closure panel
From the Network Assy
for the midrange/tweeter
From the Network Assy
for the woofer
Apply adhesive.
Apply adhesive.
-: White
Bottom side
Note: The NW Assy shown in
this photo is for the S-1EX,
but the shape of the closure
panel is the same.
Front side
0.22
Ω
56
µ
F
68
µ
F
4.5
mH
1.8mH
Upper side