Technics SL-PC25

SL-PC25
ne
How
to
check
the
main
P.C.B.
-—
Procedure
1--2--6-7
89-17
e¢When checking the foil side of the main P.C.B. and
replacing the parts, do as shown here.
Main P.C.B.
>< Use rods or similar object to hold the
main P.C.B. in an upright position.
M@ MEASUREMENTS AND ADJUSTMENTS
Warning: This product uses a laser diode. Refer to caution statements on page 3.
Caution: During adjustment, never connect CH-2 probe’s GND to any place for it may short Vref line.
(Connect CH-1 probe’s GND to specified TP. described in each section.)
PREPARTION
. Remove the dust cover (refer to disassembly instruction
Ref. No. 1).
. Remove the bottom cover (refer to disassembly instruction
Ref. No. 2).
. Remove the clamp cover (refer to disassembly instruction
Ref. No. 6).
. Remove the clamp chassis (refer to disassembly instruc-
tion Ref. No. 7).
Set the power switch to ON.
. (1) The carousel rotates clockwise and stops at the fifth Test disc
tray.
(2) Set the power switch to OFF and then to ON again,
when the optical deck reaches it’s height position, set
the power switch to OFF.
. Remove the disc tray (refer to disassembly instruction Ref.
No. 8).
. Place the test disc and secure it by using the magnet (refer
to disassembly instruction Ref. No. 9). Power Switch
. Set the unit in the test mode as follows:
(hold the play, stop and disc 1 keys (3 keys) on and set the
power switch to ON.
. Follow the adjustment procedure.
Magnet
means kee