Sylvania SC313C Service Manual page 44

Main 4/4 Schematic Diagram
NOTE :
THE VOLTAGE FOR PARTS IN HOT CIRCUIT IS MEASURED USING
HOT GND AS A COMMON TERMINAL.
V5
W5
V4 W4
V3
W3
V2 W2
V1 W1
1-9-12
CAUTION !
Fixed voltage 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.
X5
X4
X3
X2
X1
CAUTION
FOR CONTINUED PROTECTION AGAINST FIRE HAZARD,
REPLACE ONLY WITH THE SAME TYPE FUSE.
ATTENTION : POUR UNE PROTECTION CONTINUE LES RISQES
4A/125V D'INCELE N'UTILISER QUE DES FUSIBLE DE MEMO TYPE.
RISK OF FIRE-REPLACE FUSE AS MARKED.
"This symbol means fast operating fuse."
"Ce symbole reprèsente un fusible à fusion rapide."
Y5 Z5
Y4 Z4
Y3 Z3
Y2 Z2
Y1 Z1
1-9-13
REC Video Signal PB Video Signal
AA5 BB5
AA4 BB4
AA3 BB3
AA2 BB2
VOLTAGE CHART (Power off mode)
Ref. No. S
Q601 0.0
Ref. No. E
Q602 0
AA1 BB1
Q605 0
Q606 7.0
Q608 5.0
Q609 6.0
Q610 0.7
Q611 0
Q612 5.3
1-9-14
CRT
Ref No. Position
TRANSISTORS
Q501 AA-5
Q502 AA-4
Q503 AA-4
CONNECTORS
CL501A Z-5
CL504A Z-5
CN501 BB-4
MAIN 4/4
Ref No. Position
ICS
IC551 V-5
IC601 Z-2
IC602 X-3
TRANSISTORS
Q571 Y-5
Q572 X-5
Q591 X-4
Q601 AA-2
Q602 AA-2
Q604 Z-2
Q605 Y-2
Q606 Y-3
Q607 X-2
Q608 W-2
Q609 X-2
Q610 X-2
Q611 W-1
Q612 W-2
TEST POINTS
J551 Y-4
J552 Y-4
CONNECTORS
CL501 Z-5
CL504 Z-5
CN571 W-5
CN601 BB-2
ADJUSTMENT
VR601 Z-2
D G
137.0 1.8
C B
3.2 0.5
7.0 0
7.0 7.0
7.5 5.7
6.5 6.6
4.7 1.3
2.4 0
5.3 0.8
T5300SCM4