Clarion QX-3870N-A, Service Manual

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QX-3870N-A
(Fig. 2)
1 A 1 CF PWB is part of the CFHDD PWB AS.
B 1 Bend the tabs in the direction of the PWB silk.
(Refer to Fig. 1.)
Bending sequence is specified. (1) to (3)
2
(Fig. 3)
3 C 1
(Refer to Fig. 1.)
4 D 1
5 E 1 The tabs should be securely locked in 2 places.
6 F 1
G 4
Tightening sequence is specified. (1) to (4)
Tightening torque: 0.4 N·m
(Fig. 4)
7 H 1
I 3
(Refer to Fig. 3.)
Tightening sequence is specified. (1) to (3)
Tightening torque: 0.4 N·m
(Fig. 1) 8 J 1
(Check with the loupe.) (Refer to Fig. 5.)
9
Install the NAU-US-V PWB on the AUDIO-PWB part.
[Precautions for AUDIO-PWB handling] (Fig. 5)
(1)
Insert the CF PWB part from the front cover side of AUDIO-
PWB (H) and tighten it with 2.6 x 5 screws (I).
Check the mounting condition of chip R(R2304) of NAU-US-V
PWB (J) and remove the 3 connector caps. (Refer to Fig. 4.)
* Push close to the center of the NAU-US-V PWB to lock the
connector.
(Refer to Fig. 4.)
Check that the plug notch of the CF PWB fits
securely with the positioning dowel of the AUDIO-
PWB.
Pass the 2 FFCs through the holes of the front
cover, and pull them through to the inner side of
the front cover. (Refer to Fig. 4.)
When assembling the NAU-US-V PWB, move it
parallel in the direction of
the dotted arrow and
insert it diagonally.
.8829036C
Insert the FFC to its base and check that it is
securely locked.
Insert FFC-15PIN-78MM (D) into the CF PWB connector
(blue is up) and lock it.
Insert the FFC to its base and check that it is
securely locked.
Place CF BRKT (F) on the CF PWB part and tighten it with
2.6 x 6.5 screws (G). The 2 FFCs should be pulled through the
ڏ
holes
of the CF BRKT. (Refer to Fig. 2.)
Install CF-BT cover (E) on the CF PWB part and lock the tabs
in 2 places.
MJZ0536
NAZ7671
EKZ0154
When bending the tabs with the tool, be careful not
to touch the BT module.
NXZ3171
Install CF SHIELD cover (B) on CF PWB (A) ( CF ejector
shape is
ع
) and bend the tabs in 3 places to fix.
Release the FFC connector lock of the CF PWB.
(Refer to Fig. 1.)
* Pay sufficient attention in handling so that the FAN inside the AUDIO PWB does not hit other parts.
.9900736A There should be no peeling, cracks or missing
parts for R2304.
* Do not subject the AUDIO-PWB FAN to strong impact. If it is dropped from a height of 20 cm or more,
discard it.
* Do not touch the rotating part of the AUDIO-PWB FAN.
Electric screwdriver (0.4±0.04 N·m)
Tools to be used
Work processing drawing
EKZ0164
( .9900344A )
㪇㪉
Work procedures
No.
Insert FFC-50PIN-78MM (C) into the CF PWB connector
(blue is up) and lock it.
Part No.
Important control items
Qty
NAZ7681
Assembly 1
QX-3870N-A
(NAU-3225KCA-C)
MJZ0482
R2304
䃩
A
B
C
D
E
F
Insert into the
lower side of CF
PWB (A).
G
G
G
(1)
(2)
(3)
(4)
H
(A)
I
I
Positioning
dowel
(Inner side of
chassis)
(1)
(2)
(3)
Bent tab (1)
Bent tab (2)
Bent tab (3)
(C)
(D)
H
J
Remove the connector
caps from the part
surface in 2 places and
the flow surface in 1
place.
Pass the 2 FFCs though this hole.
Remove the FFC connector locks.