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OPERATION CHECK-1
CURRENT DETECTION OF POWER SUPPLY
Notes
No load and No signal input.
How to check?
1. Connect the power supply card to a wall outlet.
2. Power On the unit.
3. Short-circuit the both ends of P161 on NAPS-7789.
4. Check that it is as follows.
Standby
TE
L 13942296513
RELAYS AND INDICATORS
How to check?
2. Connect the power supply card to a wall outlet.
4. Power On the unit.
5. Immediately after power switch On.
Check
Standby
4. About 1 second after turning On a power supply.
Check
RL501 and RL502 Relays ON.
5. About 10 seconds after turning On a power supply.
Check
RL701 Relays ON.
Check
Standby
www
.
http://www.xiaoyu163.com
Lights
Power
Blinks
Blinks
Power
Lights
Blinks stop
Power
x
ao
y
i
http://www.xiaoyu163.com
8
P161
PROT
TEST
P161
E122
PROT
TEST
E126
Q103
GND2
+12V
PROT
+12V
RL-
PROT
RL+
JL9906B
U2
NAPS-7789
P903B
Q Q
3
6 7
1 3
XLR
INPUT
RCA
SELECT
P608B
P302
U15
NAAF-7797
P601C
-B
BLUE
E601
P702
u163
.
2 9
9 4
2 8
+B
E114
E121
E112
E
E124
E125
E123
-B
E173
E174
E175
P101A
E191
E113
E192
D921
1 5
0 5
8
2 9
9 4
OUTPUT
RL701
RL501
RL502
JL701A
P701
P703
m
co
DTA-9.4
9 9
VOLTAGE
ADJUST
VOLTAGE
P131A
R139
CHECK
P108
REGULATED
LOW
CURRENT
D920
D923
D922
2 8
9 9
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