Table of Contents
5
1.4 OTHERS
Notes on soldring
For environmental protection, lead-free solder is used on the printed circuit boards mounted in this unit.
Be sure to use lead-free solder and a soldering iron that can meet specifications for use with lead-free solders for
repairs accompanied by reworking of soldering.
Operation of protection circuit
If the temperature of Heat Sink becomes approximately 80°C, the output power becomes about half for temperature
protection.
If the temperature of Heat Sink becomes approximately 100°C, AMP operation is stopped for temperature protection.
2. SPECIFICATIONS
2.1 SPECIFICATIONS
For all items except the backup current, refer to the Owner's Manual.
Backup current......................... 1.0 mA or less
3. BASIC ITEMS FOR SERVICE
3.1 CHECK POINTS AFTER SERVICING
To keep the product quality after servicing, please confirm following check points.
N
. o
P
1
Confirm whether the customer complain has
been solved.
2
Check the output sound.
3
A
See the table below for the items to be checked regarding audio:
Item to be checked regarding audio
Distortion
Noise
Volume too low
Volume too high
Volume fluctuating
Sound interrupted
3.2 JIGS LIST
- Grease List
Name
Name
Grease
Bond
5
6
o r
c
e
d
u
e r
s
p
p
e
a
a r
n
c
e
c
h
e
k c
Grease No.
Grease No.
GEM1057
GYL1006
GM-A6704/XEUC
6
7
I
e t
m
o t
b
e
c
o
n
r i f
m
e
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
h
e
s
r o
d
t r i
receiving it for service.
Remarks
Remarks
P.C.B TOTAL ASSY
P.C.B TOTAL ASSY
7
8
d
o
n
s t i
a
p
p
e
a
a r
n
c
e
a
t f
r e
8
A
B
C
D
E
F
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