Denon DNP-800NE Service Manual page 39

TROUBLE SHOOTING
1. POWER
1.1. The unit does not power on
Check that the LED is lit (when connected to the
AC inlet).
Does the POWER indicator blink in red immedi-
ately or after a fixed period of time?
NO
Is the OLED lit?
YES
Is the FUSE blown out?
MAIN FUSE[F802]
NO
"1.2. Power Connection Wiring Abnormalities"
1.2. Power Connection Wiring Abnormalities
Check the cable and its connection.
MAIN PCB to SMPS PCB [CN221]
OK
TO "1.3. Power Supply Voltage Abnormalities"
YES
Can the "Protection History" be checked?
("1-3. Protection History Display Mode")
NO
"1.2. Power Connection Wiring Abnormalities"
NO
"2.1. OLED is not lit"
YES
Replace the FUSE [F801].
If the fuse blows again, proceed to "1.3. Power
Supply Voltage Abnormalities".
(The problem may be a short circuit or overload.)
NG
If conduction does not recover, replace the
cable or circuit board.
YES
Check the Protection history.
[DC PROTECTION1]
Check the POWER BLOCK in MAIN PCB.
[DC PROTECTION2]
Check the AUDIO BLOCK in MAIN PCB.
39