Technics SU-Z65 - How to Replace Chips (Resistors); Chip Replacement Notes and Precautions; Printed Circuit Boards (PCBs); PCB Identification and Location Guide

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HOW
TO
REPLACE
CHIPS
(RESISTORS)
—
. Unsolder from chip by using solder sucker.
2.
Remove
chip
with
tweezers
by
rotating
it
while
remov-
ing
solder
as
shown
in
Fig.
1.
°
3.
Solder
circuit
board
first
and
then
solder
chip
in
the
direction
of
the
arrow
as
shown
in
Fig.
2.
Notes:
1.
Do
not
use
chip
again
which
is
removed
from
printed
circuit
board.
2.
Use
lead
wire
with
insulator
for
replacement
instead
of
chip jumper.
Note for replacing chips
. Do not heat chips more than three (3) seconds.
. Becareful not to damage the electrode of chips.
. Use soldering iron (less than 6OW) and tweezers for
replacing chips.
Unsolder “=
WN @
Soldering
nlp iron
@
PRINTED
CIRCUIT
BOARDS
Fig.
2
(8%)
Ground
(Earth)
line
PCB (Selector position LED indicators)
To GX P.c.8. (35) terminal —{
PCB
(Volume
control
circuit)
Heat.
sink
TH{02 Cw THIOL
Ry) |
\ = To .0.8.(01) terminal
W
ToHY P.c.8.
52) terminal
$4 $5
SUBSONIC FILTER HIGH FILTER
H
Main P.C.B. (EM P.c.B.)
PCB (Speaker impedance detection circuit)
Ol
2 a46c08
0.5
0
Eres
foi
tt
right channel FT) FO Oo OO OO oo oO oo oo oo oo oo
CELE SHEN EHOnEESTUOBE
3. 5 10 20 50 100 Watts