ViewSonic VP150M Service Manual - Page 55
Trouble, Audio
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Service Manual VP150m TROUBLE SHOOTING TROUBLE WITH AUDIO Start ViewSonic September 2000 - Version 1.0 Input Audio is OK ? N 1. Check audio cable 2. Check audio source Audio Output is OK? 1. Check audio input is OK ? 2. Check IC01 IS OK ? 3. Check audio board voltage is OK ? 4. Check is in power saving 5. Check speakers is OK ? Volume Control is OK ? 1. Check main board IC25 pin 30 output is OK ? 2. Check IC01 is OK ? SOFT Function is OK ? N 1. Check main board IC25 pin4 ►output is OK ? 2. Check Q01, Q02 is OK ? Audio Output is Balance ? NI0.12.. Check Check audio input IC01 is OK is ? OK ? End Page 54 Confidential - Do Not Copy
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Service
Manual
VP150m
ViewSonic
September
2000
-
Version
1.0
TROUBLE
SHOOTING
TROUBLE
WITH
AUDIO
Start
Input
Audio
is
OK
?
Audio
Output
is
OK?
Volume
Control
is
OK
?
N
1.
Check
audio
cable
2.
Check
audio
source
1.
Check
audio
input
is
OK
?
2.
Check
IC01
IS
OK
?
3.
Check
audio
board
voltage
is
OK
?
4.
Check
is
in
power
saving
5.
Check
speakers
is
OK
?
1.
Check
main
board
IC25
pin
30
output
is
OK
?
2.
Check
IC01
is
OK
?
SOFT
N
1.
Check
main
board
IC25
pin4
Function
is
►output
is
OK
?
OK
?
2.
Check
Q01,
Q02
is
OK
?
Audio
Output
is
Balance
?
End
1.
Check
audio
input
is
OK
?
N
I0.2.
Check
IC01
is
OK
?
Page
54
Confidential
—
Do
Not
Copy