DAEWOO ELECTRONICS DQD-21OOD, Service Manual

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35
TROUBLESHOOTING
Is there voltage change to 12V, 6V and
0V like below in JK013 #8 pin each
time you press SCART button on
remote control (Mode Conversion)?
No Problem
Check JK103 and SCART
Cable.
No conversion to MODE by pressing
SCART button on remote control.
NO
Is there voltage change in Q111,
Q112 Base like below each time
you press SCART button on remote
control (Mode Conversion)? (Only
when H:3.3V, L:0V)
Check Q110, Q111 and Q112.
Check CABLE connecting with P202 and check
also IC500 #1 and #2 pin in MPEG B/D.
NO
Exchange the bad Item.
AV AV Wide TV
Q111 Base(TV-CON) H H L
Q112 Base(16/9-CON) L H H
Mode
Terminal
YES
Problem
Check R150, R151 and check
also +12V LINE.
AV AV Wide TV
JK103 #8 pin 12V 6V 0V
Mode
Terminal
No Problem
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