Denon DR-M3QHX Service Manual page 7

Stereo cassette tape deck
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5. How to Remove the Front Esc Ass'y
(1) Remove the top cover (240) and the front panel (233).
(Refer to section 1)
(2) Remove the angle (210). (Refer to section 2)
(3) Remove the meter window (220) and the color filter
(221). (Refer to section 3)
(4) Unscrew the 2 nuts holding the output volume (237)
and the headphone jack (255).
Then the front esc
ass'y (206) can be removed.
6.
How to Remove the Volume Circuit Board
(1) Remove the top cover 240 and the front panel 233.
(Refer to section 1)
(2) Remove the angle 210 (Refer to section 2)
(3) Remove the meter window 220 and the color filter
221. (Refer to section 3)
(4) Remove the front escuchion 206. (Refer to section 4)
(5) By unscrewing the 3 screws (3x8 CBTS P tight) 301
holding the Volume plate 245 and loosening the 2
hooks on the front escuchion ass'y 206 holding the
Volume circuit board 244, it can be removed.
(6) Unscrew the 3 nats holding the 3 Volumes. Then the
Volume circuit board 244 can be removed.
7. 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 angle 210. (Refer to section 2)
(3) Remove the meter window 220 and the color filter
221. (Refer to section 3)
(4) Remove the front escuchion 206.
(Refer to section 4)
(5) By unscrewing the 3 screw (3x8 CBTS P tight) 301
holding the control circuit board and loosening the 2
hooks on the front escuchion Ass'y 206 holding
the control circuit board 204, it can be removed.
Note: When replacing the tact switch 224, 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.
8. How to Remove the Audio Circuit Board
(1) Remove the top cover 240 and the front panel 233.
(Refer to section 1)
(2) Remove
the
angle
210
(Refer
to
section
2)
(3) Remove the meter holder 242.
(Refer to section 4)
(4) Remove the front escuchion 206.
(5) Remove the volume plate 245.
(Refer to section 6)
(6) Remove the control circuit board 204.
(Refer to
section 7)
(7) Remove the connectors from the audio circuit board
203.
(8) 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.
(9) By loosening the 2 hooks on the chassis holding the
audio circuit board 203, the audio circuit board can be
removed.
Note: Most repairs to the audio circuit board can be
performed by removing the bottom cover on
the chassis.
Refer to the above procedure
only when necessary.
When reassembling, follow the procedures
in reverse order; however, if each of the
various parts are not assembled properly in
their respective position, the set cannot be
assembled. When assembling, check the work
of each step carefully.
(
10
)
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1
9. How to Remove the Logic Circuit Board
(1) Remove the top cover 240. (Refer to section 1)
(2) Remove the various connectors from the logic circuit
board 202.
(3) Unscrew the screws (3x8 CBTS P tight) 301 holding
the logic circuit board.
{4} By
pulling
up the logic circuit board 202, it can be
removed.
10. How to Remove the Power Switch Circuit
Board
(1) Remove the top cover 240. (Refer to section 1)
(2) Unscrew the 1 screw (3x8 CBTS P tight) 301 holding
the bracket 216 of the power switch circuit board
215.
(3) By pulling the power switch lever 230 out of the power
switch 259, the power switch circuit board 215 can
be removed upwards.
11. How to Remove the Remote Sensor Circuit
Board
(1) Remove the top cover (240) and the front panel (233).
(Refer to Section 1)
(2) Remove the angle (21). (Refer to Section 2)
(3) Remove the meter holder (242). (Refer to Section 4)
(4) By unscrewing the 1 screw (3x6 CBS) (303) holding
the Remote Sensor Circuit Board, it can be removed.
(ID
i

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