PIONEER S-1EX-QL/SXTW/EW5
Service Manual

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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.
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2.3.1 Network Assy for the Woofers
� The Network Assy for the woofers is located inside the back board behind the lower woofer and secured with 4 screws. (1) Remove the acoustic absorbent pads at 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 lower woofer was attached then secure it in place with the 4 screws. (See Fig. 2-2.) (5) Among the 3 pairs of cords from the Network Assy, connect the cords with black tape 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 at the input terminals. (See Figs. 2-5 to 2-8.) (8) Among the 3 pairs of cords from the Network Assy, connect and solder the remaining 2 pairs of cords with white tape 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 upper woofer, using 4 screws. (1) Remove the acoustic absorbent pads at the input terminals, 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 upper 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 at the input terminals, 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.

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Apply adhesive. +: White with Black line
From the Network Assy for the midrange/tweeter From the Network Assy for the woofers

-: White Apply adhesive.

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Fig. 2-1: Input terminals (inside the cabinet) Upper side Upper side

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Closure panel : Screws

Bottom side Bottom side : Screws Fig. 2-2: Specifications for attaching the Network Assy for the woofers : Screws Fig. 2-3: Specifications for attaching the Network Assy for the midrange/tweeter

Chamber Fig. 2-4: Specifications for attaching the closure panel (cross-sectional view of the coaxial-unit speaker)

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S-1EX
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