Read Sharp DX-AT50H (serv.man13) Service Manual online
DX-AT50H
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Figure 50 WIRING SIDE OF P.W.BOARD (3/6)
CAUTION !
Switching power supply circuit is used in this unit.
If Main Fuse (F1001) is blown, check to see that all components in the
power supply circuit are not defective before you connect the AC plug to the
AC power supply. Otherwise it may cause some components in the power
supply circuit to fail.
Switching power supply circuit is used in this unit.
If Main Fuse (F1001) is blown, check to see that all components in the
power supply circuit are not defective before you connect the AC plug to the
AC power supply. Otherwise it may cause some components in the power
supply circuit to fail.
BECAUSE A HOT CHASSIS GROUND IS PRESENT IN THE POWER
SUPPLY CIRCUIT, AN ISOLATION TRANSFORMER MUST BE USED.
ALSO, IN ORDER TO HAVE THE ABILITY TO INCREASE THE INPUT
SLOWLY, WHEN TROUBLESHOOTING THIS TYPE POWER SUPPLY
CIRCUIT, A VARIABLE ISOLATION TRANSFORMER IS REQUIRED.
SUPPLY CIRCUIT, AN ISOLATION TRANSFORMER MUST BE USED.
ALSO, IN ORDER TO HAVE THE ABILITY TO INCREASE THE INPUT
SLOWLY, WHEN TROUBLESHOOTING THIS TYPE POWER SUPPLY
CIRCUIT, A VARIABLE ISOLATION TRANSFORMER IS REQUIRED.
CAUTION
FOR CONTINUED PROTECTION AGAINST FIRE HAZARD,
REPLACE ONLY WITH THE SAME TYPE FUSE.
FOR CONTINUED PROTECTION AGAINST FIRE HAZARD,
REPLACE ONLY WITH THE SAME TYPE FUSE.
POWER SUPPLY CBA
Ref No.
Position
Ref No.
Position
IC1001
D-1
Q1007
E-2
IC1002
E-2
Q1008
C-1
IC1003
F-2
Q1010
E-4
IC1006
D-1
Q1011
E-1
Q1012
F-1
Q1001
C-2
Q1014
F-1
Q1002
F-2
Q1003
C-2
CN1001
E-2
Q1004
F-1
CN1002
F-2
Q1005
F-1
CN1003
B-3
Q1006
F-2
ICS
TRANSISTORS
CONNECTORS
TRANSISTORS
POWER PWB (TOP VIEW)
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