Mitsubishi Electric LT-3280 Service Manual page 41

3-2. No each(L or R) of audio output generated. 3-2. 3-2. 3-2. 3-2. No each(L or R) of audio output generated. No each(L or R) of audio output generated.
No each(L or R) of audio output generated. No each(L or R) of audio output generated.
Enter audio input signal. ( ex. PC Audio)
Is all harness connected correctly?
(Especially between PWB-MAIN and PWB-CONNECT(MA),
PWB-CONNECT and SPEAKER(SP))
YES
BALANCE level is center.
YES
Problem is in IC370 or IC380 or their
peripheral circuits.
Please exchange PWB-MAIN
3-3. 3-3.
3-3. 3-3. No HDMI audio output generated. 3-3. No HDMI audio output generated. No HDMI audio output generated. No HDMI audio output generated.
No HDMI audio output generated.
In case of no HDMI audio output generates, problem is in IC500 or IC302 or their peripheral Circuits.
Please exchange PWB-MAIN. PWB-MAIN. PWB-MAIN. PWB-MAIN. PWB-MAIN.
3-4. No PC audio output generated. 3-4. 3-4.
3-4. 3-4. No PC audio output generated. No PC audio output generated. No PC audio output generated. No PC audio output generated.
In case of no PC audio output generates, problem is in J304 or their peripheral circuits.
PWB-MAIN. PWB-MAIN.
Please exchange PWB-MAIN. PWB-MAIN. PWB-MAIN.
3-5. When you turn up volume(over 50), there is noise from speaker 3-5. When you turn up volume(over 50), there is noise from speaker 3-5. When you turn up volume(over 50), there is noise from speaker. . . . . 3-5. When you turn up volume(over 50), there is noise from speaker 3-5. When you turn up volume(over 50), there is noise from speaker
Please exchange the parts of PWB-MAIN
C37A and C38A : from 220ƒ ÊF to 470ƒ ÊF
C371 and C381 : from 0.47ƒ ÊF to 0.1ƒ ÊF
If PWB-CONNECT number is "211A77601", please exchange this PWB-CONNECT to the PWB-CONNECT
that number is " 211A84201".
MODELS: LT-3280D/LT-3780D
NO
PWB-MAIN as below. . . . . PWB-MAIN PWB-MAIN PWB-MAIN
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NO Poor harness connection or
defective cable.
It adjusts BALANCE to center.