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5
3. BASIC ITEMS FOR SERVICE
QQ
3 7 63 1515 0
3.1 CHECK POINTS AFTER SERVICING
To keep the product quality after servicing, please confirm following check points.
N
. o
1
2
3
See the table below for the items to be checked regarding audio:
3.2 PCB LOCATIONS
TE
L 13942296513
A
Amp Unit
Consists of
Amp PCB
Switch PCB
www
Unit Number
Unit Name
Unit Number
.
Unit Name
5
http://www.xiaoyu163.com
6
P
o r
c
e
d
u
e r
s
Confirm whether the customer complain has
been solved.
Check the output sound.
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
Amp PCB
:
YWH5029
x
ao
u163
y
:
Amp Unit
:
CWM9848
i
:
Remote Control Unit
6
http://www.xiaoyu163.com
7
2 9
8
I
e t
m
o t
b
The customer complain must not be
reappeared.
Audio and operations must be normal.
Audio and operations must be normal.
N
o
c s
a r
c t
receiving it for service.
Q Q
3
6 7
1 3
1 5
B
C
Remote Control Unit
co
.
PRS-D1200M/XS/UC
7
9 4
2 8
e
c
o
n
r i f
m
e
d
h
e
s
r o
d
t r i
o
n
s t i
a
p
p
e
a
a r
n
c
e
0 5
8
2 9
9 4
2 8
Switch PCB
m
8
9 9
A
a
t f
r e
B
C
9 9
D
E
F
11
8
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