52
4. HDMI PCB (PT01)
4.1 Check the Scaler.
OK
OK
OK
OK
OK
Check the input signals of QK04-QK06.
OK
OK
NG
NG
OK
NG
OK
Refer to Scaler 2
NG
NG
OK
OK
Are the ACS+3.3V, VS+2.5V and
VS+3.3V voltage lines of QW01 normal?
Is the reset signal of QW01 (52pin) H?
Are the digital data input signals normal?
PC_2(0-9), PY_2(0-9) and SDCLK_2
Check the soldering of LM01-LM03 and
QW81-QW83.
Check the input voltage of QW81-QW83.
Check the VD_PSW level. VD_PSW=H
Replace QW81, QW82 or
QW83.
Check the soldering of JQ02, JK02 (8pin)
and QU01 (1pin).
Check the soldering of QW01, RW13 and
CW07.
Check the soldering of JW02, JK02 (2pin)
and QU01 (24pin).
Check the soldering of JW01, JK01,
RW01-RW08, RW17 and QW01.
Check the soldering of QK04-QK06 and
RK34-RK39.
Check the VD+3.3V voltage
line of QK04-QK06.
Replace QK04, QK05 or QK06.
Refer to “3.4 Check the DIGITAL VEDEO
OUTPUT”.