Denon AVR-3801 Service Manual page 108

SCHEMATIC DIAGRAMS (10/15)
1 2
Q Q
3 7 6 3 1 5 1 5 0
+ 5V
A
+ 15V
- 15V
T E
L 1 3 9 4 2 2 9 6 5 1 3
C
w w w
.
3 4 5
+ 5V
+ 9V
+ 6.4V
+ 10.1V
+ 20V + 24.6V
+ 25.7V
x a o
y
i
NOTICE
ALL RESISTANCE VALUES IN OHM. k=1,000 OHM M=1,000,000 OHM
ALL CAPACITANCE VALUES IN MICRO FARAD. P=MICRO-MICRO FARAD
EACH VOLTAGE AND CURRENT ARE MEASUERD AT NO SIGNAL INPUT
CONDITION.
CIRCUIT AND PARTS ARE SUBJECT TO CHANGE WITHOUT PRIOR
NOTICE.
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6 7
8
Q Q
3 7 6 3
WARNING:
Parts marked with this symbol have critical characteristics.
u 1 6 3 Use ONLY r eplacement parts recommended by the manufacture.
CAUTION:
Before returning the unit to the customer, make sure you make either (1) a .
leakage current check or (2) a line to chassis resistance check. If the leakage
current exceeds 0.5 milliamps, or if the resistance from chassis to either side
of the power card is less than 460 kohms, the unit is defective.
WARNING:
DO NOT return the unit to the customer until the problem is located and
corrected.
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8
9
2 4
9 9 8
B
+ 5V
1 5 1 5 0 8 9 2 4
D
m
c o
SCHEMATIC DIAGRAMS (10/15)
1U-3319-1 REGULATOR UNIT
1U-3319-4,5 DIGITAL INPUT UNIT
1U-3319-11/1U3319-12 VOLTAGE SELECT UNIT
1U-3319-8 PT902 UNIT
1U-3319-9 PT903 UNIT
AVR-3801
10 11
2
9 9
A
B
C
D
9 8 2 9 9
E
F
+
B LINE
-
B LINE
SIGNAL
G
H
72