LG MDD64K - USB Recording Functionality; Recording to USB Overview; Recording Music Files to USB

3-2
4. MICOM PART CHECK I
2. P-SENS
Check power circuit
troubleshooting
NO
YES
P-SENS
Check
the pin6 of P9702
if DC V is over
5.6V
YES
OK
3. VKK PART CHECK
Check power circuit
troubleshooting
NO
YES
VKK CHECK
Check
the pin3 of P9702
if DC V is over
-28V
YES
OK
OK OK
NO
Replace IC101
(KIA7042)
NO
YES
YES
YES YES
Check if IC101 of out-
put voltage is over 4.3V
YES
Check voltage of
IC100(LC87Fxxx) pin4
YES
Refer to SMPS
troubleshooting
MICOM PART
CHECK I
NO
Check P-SENS
(P7904_pin6)
NO
Check both
end voltage of
IC101
(KIA7042)
Check
If input voltage of
IC101 is over
5V
Check the
periphery of IC101
(KIA7042)