6
KDV-3241Y/MP4339
/MP4439/MP5032
YES
YES
NO
IC401(1, 2, 3, 6, 61), IC601(21, 22, 23),
IC801(22), Q706, Q707, Q709, Q710
YES
Checked the Mute Control?
NO
TU101(19), IC401(4)
YES
Checked the AF mute?
OK
Something wrong With the Sound?
Hearing the Pop Noise?
YES
YES
NO
Q308, F303, IC701(8)
YES
Checked the Line Out AMP Vdd?
NO
Q309, IC401(64)
YES
Checked the Line Out AMP Vdd control?
YES
NO
IC701(4)
Checked the Line Out AMP Ground?
YES
NO
IC401(48), Q705, Q701, Q703
Checked the Line Out AMP Mute Contorl?
YES
NO
IC701(1, 2, 3, 5, 6, 7)
Checked the Line Out AMP Signal in/out?
OK
Something wrong With the Sound?
No REAR Line out signal?
YES
YES
NO
IC401(80), BU302
YES
Checked the Beep Control?
OK
Something wrong With the Sound?
No output Beep sound?
YES
YES
NO
Q308, F303, IC702(8)
YES
Checked the Line Out AMP Vdd?
NO
Q309, IC401(64)
YES
Checked the Line Out AMP Vdd control?
YES
NO
IC702(4)
Checked the Line Out AMP Ground?
YES
NO
IC401(48), Q705, Q701, Q703
Checked the Line Out AMP Mute Contorl?
YES
NO
IC702(1, 2, 3, 5, 6, 7)
Checked the Line Out AMP Signal in/out?
OK
Something wrong With the Sound?
No Subwoofer Line out signal?
YES
YES
NO
IC901(56)
YES
Checked the LCD Driver Vdd?
NO
IC901(59)
YES
Checked the LCD Driver Ground?
NO
IC901(61), CN901(11), IC401(75)
NO
IC901(60)
NO
IC401(76, 78, 79), CN901(3, 4, 10),
IC901(62, 63, 64)
NO
IC901(1 ~ 55), LCD
Checked the LCD Driver RESET?
YES
Checked the LCD Driver OSC?
YES
Checked the LCD Driver data interface?
YES
Checked the LCD to LCD Driver line?
YES
OK
Something wrong with the Display?
No Display or Some Display is broken?
YES
YES
NO
IC601(25, 26), IC401(9, 54)
YES
Checked the Level Meter Signal Input?
OK
Something wrong with the Display?
Don't moved Level dancing bar?
YES
YES
NO
F302, CN801(11), IC401(66), IC301(9)
YES
Checked the Dimmer control input?
NO
IC301(4), CN901(13)
YES
Checked the LED Vdd?
NO
LD901 ~ LD919, LD922 ~ LD926
Checked the LED?
YES
OK
Something wrong with the Display?
Not available to illumination with button?
YES
YES
NO
F302, CN801(11), IC401(66), IC301(9)
YES
Checked the Dimmer control input?
NO
IC301(4), Q320, Q322, CN901(12)
YES
Checked the LCD Vdd?
NO
IC401(58, 59), Q319, Q321
NO
LD920 ~ LD921
Checked the LCD Vdd control?
Checked the LED?
YES
YES
OK
Something wrong with the Display?
Not avaliable to LCD Lighting control?
3. Display Error Correction Flow Chart
TROUBLESHOOTING