Service manual

3-17
CONFIDENTIAL
EMP-1825/EMP-1815/EMP-1810
SEIKO EPSON Revision:C
3.3.7 Audio I/O’s Check
Flowchart 3-9 Audio I/O’s Check
If the sound I/O do not work well,
apply the remedy from the top (1).
If it doesnot work, go on to the next remedy.
Start
NG
2. Replace Speaker
1. Input PC input to audio I/F.
2. Press [Source Search] button
and switch to the corresponding
souce.
3. Output sound from the Speaker.
1. Does the sound output from
Speaker?
2. Is the volume control effective?
3. With [A/V Mute] button,
is the function of stopping
/resuming the
sound effective?
1. Re-connect MA board
CN2400 correctly.
3. Replace Optical Engine and
MAB set.
NG
NG
For more information, refer to 4.5.2 "Removing the PS Fan/PS Ballast Assy./Speaker" (p. 48) /4.4.1
"Removing the Optical Engine and MAB (1) (MA Board Assy.)" (p. 20) / 4.4.3 "Removing the Opti-
cal Engine and MAB (2) (Optical Engine)" (p. 42)