Jvc Zero5 Service Manual

Page 2

1. Specifications

: 3-Way, bass reflex

: 12" (30 cm) free edge woofer
44/2 (10 cm) metal dome 84
cone construction type midrange
Dynaflat ribbon type tweeter

:100W RMS (DIN)

Type
Speakers

Power handling

capacity 200 W (MUSIC)
Frequency response : 30 - 50 000 Hz
Impedance : 8 $2

2.Removal Procedures
2-(1) Variable Resistor

Pull off the knob and remove the hexagonal nut retaining
the variable resistor by using a pair of needle-nosed pliers
or a box wrench. When the knob is excessively tight, wrap
it with a piece of thick tape or a strip of rubber and then
grasp with a pair of pliers.

Nut

\/

Knob Washer

Variable resistor

_I\._IU\

Control panel "I 1

Buffle board
Fig. 1

2-(2) Removal and attachment
of the speaker units

Loosen the screws with a 5-mm hexagonal wrench. Vinyl
tubes are employed as spacers for the midrange speaker
and tweeter. When these speaker units are replaced, also
replace the spacers together with them.

2-(3) Removal and attachment of
the speaker protector

When removing the speaker protector, insert a small
pointed object into a hole at the rim of the protector and
pull toward you. Pull the protector at several equidistant
points along its outer edge in this same way. When attach-
ing the protector, apply a slight amount of adhesive into
the six slots of the equalizer and then push the protector
in its place.

ZERO-5
No. 2484

: 92 dB/W, m

: 500 Hz, 5 000 Hz

: Continu0usly variable with
constant resistance

Seund pressure
Crossover frequency
Level control

Dimensions : 25-13/16"(H) x 14-3/8(W) x
13-3/8"lD)
(65.5 x 36.5 x 34.0 cm)
Weight : 47.4 lbs (21.5 kg)

2-(4) Removal of the dividing network

Loosen the six screws on the back panel and the single
screw below the back panel (181 mm below the center
of the back panel). Then the back panel can be taken off.

Network board

Di (fi-lltNt (ll

2" mm

Wood screw
(12 mm) x 6

Wood screw
(32 mm) x 1

2-(5) INPUT terminals

Before installing the terminal knob into the back pane|,turn
the terminal knob until a few of its threads on the stem
remain exposed to receive the nut as illustrated in Fig. 3.

Q ~ Nut
Threads should >
remain here. Q _ . » Terminal
. I'-
O X \ g x Back
a); panel
@Q» .- ._ Red for
B (+) terminal
Fl ' 2 o "Washer
9 Black for / i 0
l-) terminal @ l
, l: .»/
l
I <» Knob
8.1
U Fig. 3