Onkyo TX-3000

TX-3000
EXPLODED VIEW
DISASSEMBLY
Top Cover
Remove the four screws (4) holding the top cover and side
bracket.
Remove the two screws (3) holding the top cover and back
panel.
Front Panel
Remove the top cover.
Remove the TUNING knob.
Remove the five screws holding the front panel and front
bracket.
Bottom board
Remove the four screws (24) holding the bottom board
and chassis.
Remove the four screws (25) holding the bottom board and
legs.
Meters
Remove the top panel.
Remove the two screws holding the lamp bracket and front
baracket.
Dial Glass
Remove the four screws holding the dial glass and front
panel.
Notes: The dial glass has been mounted by applying an 800
gr torque to the screws. ~
If the dial glass is removed during repairs, and a
torque driver is available, apply 800 gr torque to the
screws when replacing. If however, a torque driver
is not available, simply tighten the screws by hand.
When replacing the dial glass, insert all relevant
component parts (9-13) in accordance with the
exploded view.
Pointer Lamp
Remove the top cover and front panel.
SERVICE PROCEDURES
Sensor Switch (SENSOR)
This switch enables the servo lock system for automatic
FM tuning to be matched with the various operating con-
ditions. Set it at LOW initially. Switch to NORM or HIGH
if the TUNED lamp does not instantly turn off when you
touch the tuning knob.
Power Meter/Signal Strength Meter
When the tuning is not being operated, this meter displays
the level of power applied to the right speaker system. The
instant the tuning knob is touched, the meter changes to
display the signal strength of the radio broadcast being
received at that moment. Tune a station so the needle
moves as far to the right as possible.
De-emphasis switch (Only W model)
The 25 ysec/Normal selector switch for Dolby FM boad-
casts is located on the front panel. The 50 ysec/75 psec
selector switch employed in the W (120/220V) model
is located on the bottom board. When shipped from the
factory, this switch is set to the SO usec position. For use
in 75 psec regions, switch over to the 75 usec position.
Voltage conversion (Only W model)
This set may be set to operated at either 120V or 220V at
50Hz to 60Hz. This voltage selector switch is located on the
back panel. If a voltage change, is necessary, remove the
lock plate, switch to the proper voltage, and replace the
plate.