QSC ISA 280, Техническое и сервисное руководство

Страница: 116 / 142

114 QSC Audio Products, LLC
TD-000163-00 Rev. B
ISA 500T
page 3 of 3
THIS DOCUMENT CONTAINS PROPRIETARY
INFORMATION THAT IS THE PROPERTY
OF QSC AUDIO PRODUCTS, WHICH MAY NOT
BE DISCLOSED, REPRODUCED OR USED
WITHOUT EXPRESS WRITTEN CONSENT FROM
QSC AUDIO PRODUCTS.
A
B
C
D
A
B
C
D
8 7 6 5 4 3 2 1
8 7 6 5 4 3 2 1
NOTES: UNLESS OTHERWISE SPECIFIED
PLOT DATE:
Wed Sep 05, 2001
SCALE: NONE
SIZE
D
FSCM NO. DWG NO.
SHEET 4 OF 4
SH–005001–00
CAD FILE NO:
SH5001ra.sch
REV
A
A
4
SH–005001–00
REV
SH
D
W
G NO
.
100V 120V 240V
BRN BRN BRN J4A
GRY GRY — J5A
BLK BLU BLU J6A
— — BLK J8A
— — GRY J9A
WHT RED RED J7A
BLU BLK — J2A
RED WHT WHT J3A
TABLE 1
AC LINE VOLTAGE
PO
WER
TRANSF
ORM
ER
PRI
M
AR
Y
LEAD
CO
LO
R
TAB
100V 120V 240V
CIRCUIT
BREAKER
15A—
125V
15A—
125V
7.5A—
250V
R21
1 OHM
30A
1 OHM
30A
2.5 OHM
15A
R21A
0 OHM
(JUMPER)
0 OHM
(JUMPER)
2.5 OHM
15A
TABLE 2
AC LINE VOLTAGE
U-I CORE POWER TRANSFORMER
NOTE: SPLIT SECONDARY WIRING
FROM EACH LEG TO EACH CHANNEL
CIRCUIT BREAKER:
SEE TABLE 2
FOR VALUES
AC POWER
SWITCH
IEC AC INLET
LINE
NEUT
GND 20 VAC TO FAN POWER RECTIFIER
28V PRI-SIDE DC FAN SUPPLY
MAINTAIN FULL
PRI-SEC CREEPAGE
PC–004507–00, AC PCB
J2A THRU J9A: PCB-MOUNTED TABS.
SEE TABLE 1 FOR CONNECTIONS.
400V–25A
BR100
BR200
400V–25A
BR1
200V–1A
MUTING AND THERMAL PROTECTION
R21 & R21A:
SEE TABLE 2
FOR VALUES
R4
60C 100 OHM
R7
60C 100 OHM
ATTACH TO CH2
HEAT SINK. ATTACH TO CH1
HEAT SINK.