Denon DR-M22 - Page 10

4. How to Remove the Control! Circuit Board
(1) Remove the top cover 240 and the front panel 233.
(Refer to Section 1)
(2) Remove the frant escuchion 221.
(Refer to section 3)
(3) Remove the connectors with lead wires which run from
the control circuit board 204.
FL counter circuit board side 5P connector CN406
Logic circuit board side 8P connector CN5
(4) By unscrewing 3 screw (3x8 CBTS P tight) 301 holding
the control circuit board and loosening the 3 hooks on
the control circuit board 204 can be removed.
Note: When replacing the tact switch 257, always
check to make sure that it is not floating above
the circuit board. If it is floating, the switch
will be in the on condition when the set is
assembled.
5. How to Remove the FL Meter
(1) Remove the top cover 240 (Refer to section 1)
(2) Remove the connectors on the FL meter circuit board
205.
(3) Remove the 2 screws (307) (3 x 8 CFTS S Tight)
which secure FL Meter, Screw (310) (3 x 10 CBS), and
washer (3W). Then the FL Meter may be removed.
CAUTION:
During assembly, avoid snagging the Shield Sheet (243),
which is located under the Counter/Meter Circuit board
(205), on the FL Meter.
(4)
(5)
(6)
—~10—-
7.
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
How to Remove the Bias Volume
Remove
the
top
cover
240
and
the
front
panel
233.
(Refer
to
section
1)
Remove the angle 210 (Refer to section 2)
Remove
the
front
escuchion
221
and
the
meter
win-
dow
220.
(Refer to section 3)
Remove
the
control
circuit
board
204,
and
the
FL
meter
256.
(Refer
to
sections
4,
5)
Unscrew
the
2
screws
(3
x
10
CBS)
315
holding
the
Bias
Volume
plate
274.
Unscrew nat nat holding the Bias Volume.
es Chassis * Blas Votume
L)
How to Remove the Audio Circuit Board
Remove the top cover 240 and the front panel 233.
(Refer to section 1)
Remove the angle 210 (Refer to section 2)
Remove the front escuchion 221 and the meter win-
dow 220.
(Refer to section 3)
Remove the control circuit board 204, and the FL
meter 256. (Refer to sections 4, 5)
Remove the connectors from the audio circuit board
203.
Unscrew the 4 bottom cover holding screws (3x8 CBTS
P tight) 301 on the back side of the chassis 201 and
remove the bottom cover 218.
Unscrew the screw 301 holding the Audio amp circuit
board.
By lifting the front chassis 206 and loosening the 2
hooks on the chassis holding the audio circuit board
203, the audio circuit board can be removed.