Denon AVR-789 Service Manual page 29

Q Q
D
3 7 6 3 1 5 1 5 0
Input
CVBS/S
Check power supply voltage
+5V : CN2005-8pin
-5V : CN2005-7pin
MC_+5V : CN2001-5pin
OK
Check input of HDMI UNIT video decoder
signal. Check VIDEO CNT UNIT signal DET.
NG
Input V : C1272
Input Y : C1270
Input C : C1274
Check soldering of VIDEO CNT UNIT
OK connector base, and check poor
To troubleshooting of HDMI/DVI
Unless specified, VIDEO UNIT part.
E
T E Input
L 1 3 9 4 2 2 9 6 5 1 3
COMPONENT
Check power supply voltage
+5V : CN2005-8pin
-5V : CN2005-7pin
MC_+5V : CN2001-5pin
OK
Check input of HDMI UNIT video decoder
signal.
Check VIDEO CNT UNIT signal DET.
NG
Input Y : C1281
Input Cb : C1273
Input Cr : C1271
Check soldering of VIDEO CNT UNIT
OK connector base, and check poor
To troubleshooting of HDMI/DVI
Unless specified, VIDEO UNIT part.
w w w
.
Check power supply voltage
+3.3 : IC1015-O,IC1017-IN NG To troubleshooting 1.1
+1.8V : IC1016,IC1017-O Power not turn on.
Check input of input selector
and Video AMP, surrounding
NG circuitry soldering.
V : CP1006-11pin : H(+5V)
Input : IC2002,IC2003,IC2004
Y : CP1006-12pin : H(+5V)
Video AMP : IC2008,IC2001,IC2005
or CPU UNIT flaw.
OK
contacts.
Check power supply voltage
+9V : CN2005-9pin
To troubleshooting 1.1
NG
+3.3 : IC1015-O,IC1017-IN
Power not turn on.
+1.8V : IC1016,IC1017-O
Check input of input selector
and Video AMP, surrounding
circuitry soldering.
NG
Y : CP1006-12pin : H(+5V) Input : IC2023
Video AMP : IC2021
or CPU UNIT flaw.
OK
contacts.
x a o
y
i
http://www.xiaoyu163.com
8
OK
OK
Q Q
3 7 6 3
OK
OK
u 1 6 3
.
29
AVR-1909/789, AVC-1909
http://www.xiaoyu163.com
9 2 4 9 8
NG
NG NG
OK
1 5 1 5 0 8 9 2 4
NG
NG NG
OK
m
c o
2 9 9
9 8 2 9 9