Denon PMA-2000 IV - Amplifier Service Manual page 24

SCHEMATIC DIAGRAMS (1/3)
1 2 3
A
A
C
C
4 5 6
9.5V
12.7V
11.5V
7 8 9
B
B
9.4V
8.8V
D
D
12.7V
NOTICE
ALL RESISTANCE VALUES IN OHM. k=1,000 OHM M=1,000,000 OHM
+ B LINE ALL CAPACITANCE VALUES IN MICRO FARAD. P=MICRO-MICRO FARAD
EACH VOLTAGE AND CURRENT ARE MEASUERD AT MO SIGNAL INPUT
- B LINE
CONDITION.
CIRCUIT AND PARTS ARE SUBJECT TO CHANGE WITHOUT PRIOR
SIGNAL LINE
NOTICE.
PMA-2000 IV R
10 11
A
B
11.5V
C
D
E
F
G
WARNING:
Parts marked with this symbol have critical characteristics.
Use ONLY replacement 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 460kohms, the unit is defective.
WARNING:
DO NOT return the unit to the customer until the problem is located and
H
corrected.
SCHEMATIC DIAGRAMS (1/3)
1U-3130 INPUT UNIT
23