Denon AVR-3801 Service Manual page 103

AVR-3801
SCHEMATIC DIAGRAMS (9/15)
1 2
Q Q
3 7 6 3 1 5 1 5 0
A
+ 0.6V
- 56.2V - 56.2V
B
A
C
D
T E
L 1 3 9 4 2 2 9 6 5 1 3
E
F
G
w w w
H
71
4
3
+ 0.4V
+ 59V
+ 58.5V
+ 1.2V
+ 57.9V
+ 31V + 1.1V
- 1.1V
- 1.2V
- 59V
+ 0.3V
- 56.8V
C
x a o
. i
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5 6
7
+ 59V
- 59V
Q Q
3 7
+ 6V
+ 10.5V
u 1 6 3
y
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8 9
2 4
8 9 9
B
6 3 1 5 1 5 0 8 9
D
NOTICE
ALL RESISTANCE VALUES I N OHM. k=1,000 OHM M=1,000,000 OHM
ALL CAPACITANCE VALUES I N MICRO FARAD. P=MICRO-MICRO FARAD
EACH VOLTAGE AND CURRE NT ARE MEASUERD AT NO SIGNAL INPUT
CONDITION.
CIRCUIT AND PARTS ARE SUBJECT TO CHANGE WITHOUT PRIOR
m NOTICE.
WARNING:
c o
Parts marked with this symbol
Use ONLY replacemen t 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:
SCHEMATIC DIAGRAMS (9/15)
DO NOT return the unit to the customer until the problem is located and
1U-3315-1 POWER UNIT
corrected.
10 11
2
8 9 9
2 4 9 8 2 9 9
+
B LINE
-
B LINE
SIGNAL
have critical characteristics.