Sharp DV-NC150U Service Manual page 63

Main CBA Bottom View < VCR Section >
CAUTION
FOR CONTINUED PROTECTION AGAINST FIRE HAZARD,
F
REPLACE ONLY WITH THE SAME TYPE FUSE.
ATTENTION : POUR UNE PROTECTION CONTINUE LES RISQES
A V D'INCELE N'UTILISER QUE DES FUSIBLE DE MÊME TYPE.
RISK OF FIRE-REPLACE FUSE AS MARKED.
"This symbol means fast operating fuse."
"Ce symbole reprèsente un fusible à fusion rapide."
NOTE :
The voltage for parts in hot circuit is measured
using hot GND as a common terminal.
~
WF12 WF14
CN1001
1-12-29
~
WF4 WF10
CN1601
~
WF25 WF28
CN502
CAUTION !
Fixed voltage ( or Auto voltage selectable ) 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.
NOTE: CBA AND PWB MEANS PRINTED WIRING BOARD.
~ ~
WF11 WF29 WF34 WF17 WF22
R1402 CN504 CN253
WF23 WF24
CN501
1-12-30
MAIN CBA
Ref No. Position
ICS
IC301 C-4
IC451 B-3
IC501 C-2
IC505 A-2
IC571 D-1
IC751 B-5
IC1001 F-5
IC1002 G-2
IC1004 G-2
IC1201 B-5
IC1402 E-4
IC1403 E-4
TRANSISTORS
Q031 F-5
Q052 F-3
Q055 F-2
Q056 F-2
Q057 F-2
Q301 C-3
Q302 C-3
Q303 C-3
Q391 D-5
Q421 D-4
Q422 C-4
Q425 D-4
Q426 D-4
Q501 B-1
Q506 C-3
Q563 B-1
Q565 B-1
Q566 F-1
Q567 E-1
Q1001 G-4
Q1003 G-4
Q1004 G-3
Q1005 G-1
Q1006 G-2
Q1008 G-5
Q1011 G-2
Q1201 F-5
Q1202 F-5
Q1204 D-5
Q1351 G-5
Q1385 C-5
CONNECTORS
CN253 B-4
CN501 A-5
CN502 E-3
CN504 D-4
CN509 A-1
CN1001 G-1
CN1601 E-4
CN2003 G-1
VARIABLE RESISTOR
VR501 A-2
TEST POINTS
TP301 A-3
TP302 A-3
TP502 E-1
TP505 A-3
TP506 F-3
TP507 A-3
TP513 A-2
TP751 F-5
TP753 E-5
TP754 F-5
TP754 F-5
BH9600F01012A