Table of Contents
Advertisement
TROUBLE SHOOTING
Q Q
3 7 6 3 1 5 1 5 0
1. POWER
1.1. Power not turn on
Power not turn on
Are there any incomplete con-
Is the ON/STANDBY indica-
nections in the connectors con-
YES
tor on the front panel flashing
necting between the various
red?
circuit boards?
YES
Connect the connectors prop-
NO
erly.
NO
Is the fuse blown?
Refer to Fuse is blown
YES
Is a DC 6V voltage being sup-
Does the power turn on when
NO
plied from the POWER B'd
the POWER switch is turned
(CP514 pins 8) to the micropro-
off then back on?
cessor?
YES
YES
Check the primary circuitry
T E
L
1 3 9 4 2 2 9 6 5 1 3
parts including the POWER
Check
the
microprocessor
switch (for poor contacts,
periphery circuitry and replace
etc.), and replace any defec-
any defective parts.
tive parts.
1.2. Fuse is blown
Fuse is blown
Check for short circuits in the
Check for leaks or short cir-
rectifier diodes and circuitry of
cuits in the primary side parts,
the secondary side rectifying
and replace any defective
circuits, and replace any defec-
parts.
tive parts.
After repairing, also replace the fuse.
w w w
.
http://www.xiaoyu163.com
Is there a short circuit between
Correct
the
short
NO
YES
the speaker terminals and the
between the speaker and the
ground?
ground.
NO
Check for damage in the power
amplifier circuitry parts and
replace any defective parts.
Is a DC 6V voltage output when
the cord supplying the power
Check the parts from IC501 to
NO
NO
from the SUPPLY B'd to the
the
primary
circuitry
microprocessor
(CP514)
is
replace any defective parts.
unplugged?
YES
Check the circuitry and parts
from CP514 on the SUPPLY
B'd to the microprocessor for
damage and short-circuits, and
replace any defective parts.
Check for short circuits in the
power stabilizer unit's regula-
tor output terminal and the
ground, and replace any defec-
tive parts.
x
a o
u 1 6 3
y
i
AVR-1709/1609/1519/1509/689/589, AVC-1509
http://www.xiaoyu163.com
8
9
circuit
YES
NO
NO
YES
NO
and
YES
Q
Q
3
7
6
3
1
5
c o
.
25
2
4
9
8
2
NO
YES
YES
NO
NO
NO
YES
YES
1
5
0
8
9
2
4
9
8
m
9
9
2
9
9
Hide quick links:
Advertisement
Table of Contents
