Sony TA-2000F - Front Subchassis Removal; PC Board Removal; Control and Switch Replacement

PHONO-1 Equalizer Amplifier/Head Amplifier
Board
1, Remove the IMPEDANCE SELECTOR knob
by loosening the set screw.
2. Remove the hex nut securing the IMPEDANCE
SELECTOR switch to the rear panel.
3. Remove the three screws (© PS 3x6) securing
the PCB bracket to the rear panel cover. This
frees the PCB.
Plug-in Type PCB
1. Remove the two screws (® PS 3x6) securing
the PCB bracket to the PCB mounting bracket
as shown in Fig. 2-3.
2.
Remove
the
two
screws
(®
PS
3x6)
securing
the
PCB
mounting
bracket
to
the
chassis
from
the
bottom
as
shown
in
Fig.
2-4.
This
frees
the
bracket,
and
now
the
PCB’s
can
be
simply
pulled
out.
REC
OUT
Buffer/High
and
Low
Filter
Component/
Turnover
Frequency
Changeover
Component
Board
1.
Remove
the
front
subchassis
as
described
in
Procedure
2-4.
2.
Remove
the
two
screws
(®
PSW
3x6)
securing
the
PCB
to
the
front
subchassis
as
shown
in
Fig.
2-7.
OUTPUT LEVEL Changeover Switch Board
1. Remove the rear panel as described in
Procedure 2-7.
2. Remove the two screws (® B 2.6x4) securing
the OUTPUT LEVEL changeover switch to the
rear panel as shown in Fig. 2-8.
Note: This board is directly soldered to the
OUTPUT LEVEL changeover switch.
Fig. 2-7. . PC board removal
hyp xelele) 3
2-7. REAR PANEL REMOVAL
1. Remove the PHONO-1 Equalizer Amplifier/
Head Amplifier Board as described in Procedure
2-6.
2. Remove the two self-tapping screws (® B 3x6)
at each side of the rear panel as shown in
Fig. 2-5.
3. Remove the two self-tapping screws (® B 3x6)
at rear edge of the bottom as shown in Fig. 2-4.
This frees the rear panel.
2-8. CONTROL AND SWITCH REPLACEMENT
Prepare for replacing any of the controls or
switches by removing the front panel and front
subchassis or rear panel as described in Procedures
2-4 and 2-7.
POWER, FUNCTION-2, MONITOR, TURNOVER
FREQ. and TONE CANCEL Switches
1. Remove the two screws securing switches to
the front subchassis as shown in Fig. 2-9.
2. Unsolder the lead wires from the defective
switch, and then install the replacement switch.
Note that the PCB mounted at the back of the
front subchassis should be removed when
replacing the TURNOVER FREQ. or TONE
CANCEL switch.
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Fig. 2-8. Rear view
FUNCTION-1,
MODE,
FILTER,
METER
LEVEL
Switches
and
VOLUME,
HEADPHONE
LEVEL,
BALANCE,
BASS,
TREBLE
and
MIC
LEVEL
Controls
1.
Remove
the
hex
nut
that
secures
the
defective
switch
or
control
to
the
front
subchassis
as
shown
in
Fig.
2-9.
2.
Unsolder
the
lead
wires
from
the
defective
switch
or
control
and
then
install
the
new
one.