Sylvania SST4323 Service Manual page 26

CRT/H.V. Block Diagram
RAMP-OUT
P-ON-H
V-RAMP-F/B
FROM/TO
IF/VIDEO BLOCK
WF7
Q572
H-DRIVE H.DRIVE
PROTECT-1
PROTECT-2
FROM POWER DEF+B
SUPPLY BLOCK
+B
PROTECT-3
FROM/TO
SYSTEM CONTROL FBP
BLOCK
ACL
TO WH301A WH301B
RED 3
FROM IF/VIDEO
GREEN 4
BLOCK
BLUE 5
6-7
VIDEO SIGNAL
MAIN CBA
Q531
(SWITCHING)
WF8
Q533
SWITCHING
Q571
T572
P-ON-ON
H.OUTPUT
X-RAY CHECK
TP591 TP592 1
3
5
4
TP302
15kHz
TP500 TP501
GND BLUE
IC551 (V-DEFLECTION CONTROL)
THERMAL
WF11
PROTECTION
7
AMP 5
1
PULSE
UP
6 3
Q561
(SWITCHING)
T571 F.B.T. FOCUS VR
HV
F
S
11
8
10
7
SCREEN VR
9
6
WF10
WF3
Q1511, WF15 WF4
Q1521,
Q1512
Q1522
RED AMP
GREEN AMP
CRT CBA
Q551, H.
Q552 CONTROL
VR561 VR562
PCC WIDTH
Q547
(SWITCHING)
ANODE
FOCUS
SCREEN
WH501A WH501B
3 HEATER 3
1 +200V 1
WF14
BLUE AMP
Q1531,
WF5 WF13
Q1532
6-8
WF12
DY551 D.Y.
5
V-
DRIVE
4
3
H-
WF9
DRIVE
1
CN551
ANODE
JK1501
FOCUS
SCREEN
7
GND
4
8
R
V501
6
G
CRT
11
B
10
HEATER
9
CN1501
GND
L6652BLCRT