JVC KS-AX7700 Service Manual
49809200303
KS-AX7700
SERVICE MANUAL
POWER AMPLIFIER
KS-AX7700
Area suffix
J ------------ Northern America
TABLE OF CONTENTS
1 Important Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
2 Disassembly method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
3 Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LTD.
No.49809
2003/03
KS-AX7700
1.1 Safety Precautions
SECTION 1
Important Safety Precautions
!
Burrs formed during molding may be left over on some parts of the chassis. Therefore,
pay attention to such burrs in the case of preforming repair of this system.
1-2 (No.49809)
SECTION 2
r
A
Disassembly method
CAUTION:
If electricity is connected during disassembly, it must be a no
load current.
If it is load current, be sure to attach a heat sink to the poweramp IC.
This will be damaged if the above precautions are not followed,
as it does not have a sub heat sink attached to it.
2.1 Removing the bottom cover (see Fig. 1)
(1) From the bottom side of the main unit, remove the 4 screws
A retaining the bottom cover.
(2) Then remove the 6 screws B retaining the bottom cover.
(3) Remove the bottom cove r.
KS-AX7700
B
Bottom cove
2.2 Removing the main board (see Fig. 2 to 8)
(1) Remove the bottom cover from the main unit.
(2) Loosen and remove the 2 screws C retaining the top plate
on the main unit.
(Stoppers are attached to the backs of the C screws so that
they cannot be removed easily.)
(3) Remove the 3 volu me kn obs on top of the control panel . If
it cannot be pulled out easily, insert a scale or suitable lever
between the base of the volume knob and the control panel
so that the volume knob is raised a little above the surface
and then remove it.
(Be careful when inserting a lever etc. not to scratch
the surface of the control panel).
(4) Remove th e 4 screws D retaining the control panel . Then
detach the control panel and the switch knob.
A
B
Fig.1
Top plate
C
Fig.2
Volume knob
C
DD
Switch knob
Fig.3
Volume knob
Scale or suitable lever
Control panel
(Side view)
Fig.4
(No.49809)1-3
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