Sylvania 6432TE Service Manual page 34

Main CBA Top View
CAUTION !
Fixed voltage ( or Auto voltage selectable ) power supply circuit is used in this unit.
If Main Fuse (F601) 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.
TP601
+B
FOCUS-VR
(UPPER SIDE)
SCREEN-VR
(LOWER SIDE)
TP300
GND
VR661
+B ADJ
VR561
PCC
VR562
WIDTH
CAUTION: FOR CONTINUED PROTECTION AGAINST RISK
OF FIRE, REPLACE ONLY WITH SAME TYPE 4A, 125V FUSE.
ATTENTION: UTILISER UN FUSIBLE DE RECHANGE DE
4A/125V
MÊME TYPE DE 4A, 125V.
NOTE :
The voltage for parts in hot circuit is measured
using hot GND as a common terminal.
7-11
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.
7-12
MAIN CBA
Ref No. Position
ICS
B-1
IC31
IC111 E-1
IC151 E-2
IC431 D-1
IC551 A-1
IC601 D-3
F-4
IC771
IC801 E-3
TRANSISTORS
Q31 C-1
Q111 F-1
Q131 E-1
Q161 E-1
Q321 D-1
Q361 D-1
Q511 A-2
Q512 B-2
Q547 B-2
Q551 B-2
Q552 C-2
Q561 C-2
B-3
Q571
Q572 B-2
B-4
Q601
Q602 C-4
Q631 D-2
Q652 D-2
Q672 D-2
Q673 D-2
D-3
Q674
Q681 E-3
Q682 D-3
D-3
Q696
Q751 E-2
Q761 E-3
E-3
Q791
Q792 E-2
Q793 E-2
E-2
Q794
Q801 E-3
Q811 E-3
CONNECTORS
CN301 C-1
CN571 A-3
D-4
CN691
CN801 E-1
E-3
CN802
WH301A D-1
WH501A A-3
TEST POINTS
A-3
TP300
TP591 A-3
TP592 A-3
TP601 B-4
VARIABLE RESISTORS
VR561 A-2
VR562 A-2
VR661 A-2
BL2700F01012-1