Denon AVR-1910 Service Manual page 26

D
Input
CVBS/S/OMPONENT
OK
Check of power supply voltage
(VIDEO B'D).
+5V： CN1018 3pin
-5V：
CN1018 4pin
4094_PWR(+5V)：
CN1018 1pin
OK
Check of power supply voltage .
+3.3V： Emitter side of Q24 and L2
+1.8V： L3 and L4
OK
HDMI B'D
Check input of video decoder signal.
Input V：
CN1102 3pin
Input Y： CN1102 5pin
Input Cb： CN1102 7pin
Input Cr：
CN1102 9pin
OK
To troubleshooting HDMI/DVI.
※
Unless specified, HDMI B'D part.
NG
To troubleshooting 1.1
Power not turn on.
NG
Check surrounding circuitry
soldering of IC19, IC29 and IC35.
To troubleshooting 1.1 Power not
turn on.
Check output of CVBS VIDEO buffer
(IC1900A) of VIDEO B'D and
NG
COMPONENT input selector (IC1907
24,22,20pin).
OK
Check connector base
soldering of CNT 1 B'D and
incomplete connection of B'D.
26
AVR-1910/1620/1610/790/590
NG
To A or B