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3. BASIC ITEMS FOR SERVICE
3.1 CHECK POINTS AFTER SERVICING
A
To keep the product quality after servicing, please confirm following check points.
N
. o
1
2 CD
3 FM/AM tuner
B
4
5
See the table below for the items to be checked regarding audio:
C
3.2 PCB LOCATIONS
D
B
Keyboard Unit
E
D
BT Unit
A:FH-X700BT/XNUC
B:FH-X700BT/XNEW5
C:FH-X755BT/XNES
D:FH-X759BT/XNID
Unit Number
Unit Number
Unit Number
F
Unit Number
Unit Name
10
1
2
P
o r
c
e
d
u
e r
s
Confirm whether the customer complain has
been solved.
If the customer complain occurs with the
specific media, use it for the operation check.
Play back a CD.
(Track search)
Check FM/AM tuner action.
(Seek, Preset)
Switch band to check both FM and AM.
Check whether no disc is inside the product. The media used for the operating check must
A
p
p
e
a
a r
n
c
e
c
h
e
k c
Item to be checked regarding audio
Distortion
Noise
Volume too low
Volume too high
Volume fluctuating
Sound interrupted
:
QWM3544(A)
:
QWM3543(B)
:
QWM3545(C)
:
QWM3546(D)
:
Tuner Amp Unit
FH-X700BT/XNUC
2
3
I
e t
m
o t
b
e
c
o
n
r i f
m
The customer complain must not be
reappeared.
Display, audio and operations must be
normal.
No malfunction on display, audio and
operation.
Display, audio and operations must be
normal.
be ejected.
N
o
c s
a r
c t
h
e
s
r o
d
receiving it for service.
C
CD Core Unit
(S11.6STD)
A
Tuner Amp Unit
Unit Number
:
Unit Name
:
Keyboard Unit
Unit Number
:
QWM3533
Unit Name
:
BT Unit
Unit Number
:
CWX4023
Unit Name
:
CD Core Unit (S11.6STD)
3
4
e
d
t r i
o
n
s t i
a
p
p
e
a
a r
n
c
e
a
t f
r e
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