Sanyo PDP-63XR7HB, Service Manual

Page: 23 / 47

21
4.5 No picture of D-SUB channel
4.6 No picture of HDMI
Note: in order to display HDMI picture properly (especially when use the DVD with HDCP information),
first, make sure to flash write NA01, NA02, NA03 (DDC chip of HDMI interface) accurately, and the bus
line between NA01, NA02, NA03, NA04 and HDMI is well. Second, make sure that HOTPLUG circuit (it’s
high voltage when play normally) and HDMI control signal are well (NA04 pin21-23, when switch to a
certain HDMI channel, the corresponding pin is high voltage, while other pins are low voltage).
Check if NA04 has digital signal output
Check if NA04 has digital
signal input
Check the peripheral circuit of
NS01, crystal and power supply
Yes No
Check if CS12, CS13, CS14
have signal input
Is there synchronous signal output from N801 pin4,8 ?
Check the circuit
between VGA
socket and NS01
Yes
No
Yes No
Check NS01
Check if the Pin1, 5 of NB01
have sync signal input
Yes No
Check the peripheral
circuit of NB01 and
power supply Check the circuit
between VGA
socket and NB01
Check the circuit between
HDMI socket and NA04
Check the peripheral circuit of NA04 (IIC, HOTPLUG and
NA04 pin21-23 HDMI channel switch control signal)
Yes No