Emerson 20" Color Television 6420FE Service Manual page 31

Main 3/4 Schematic Diagram
CAUTION !
IF SIGNAL
Fixed voltage ( or Auto voltage selectable ) power supply circuit is used in this unit.
VIDEO SIGNAL
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.
AUDIO SIGNAL
Otherwise it may cause some components in the power supply circuit to fail.
M4
M3
M2
M1
N4 O4
N3 O3
O2
N2
O1
N1
7-7
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.
Q4
P4
P3 Q3
P2
Q2
P1
Q1
NOTE :
The voltage for parts in hot circuit is measured
using hot GND as a common terminal.
MAIN 3/4
R4
Ref No. Position
ICS
P-3
IC31
IC601 O-1
TRANSISTORS
Q31 P-4
Q601 P-2
Q602 P-1
Q631 O-1
Q652 O-1
Q672 N-2
Q673 N-1
R3
N-1
Q674
Q681 M-2
Q682 M-1
O-2
Q696
CONNECTOR
Q-2
CN691
TEST POINT
TP300 N-4
VARIABLE RESISTOR
VR661 O-1
R2
1 NOTE:
*
The Capacitor ( C643 ) is either type A or type B.
These two types are exchangeable and can be
R1
equally used whichever the model is . The difference
between type A and type B is shown in the table below.
C643 C642 JS642
Type A 0.01/250V Not Used
0.01/250V
Type B 4700P/250V Not Used WIRE
7-8 L2401SCM3