13/19" Deflection Circuit - Zenith TVBR1342Z Service Manual

1 2
G
This schematic
applies to the
following models
only:
DRIVER
TVBR1342
Q402
2SB892
TVBR1942
F
26.0
26.0
25.0
FROM MICRO
E 0.1
4.8
TO SHEET 11
TV_POWER_H
0.1
SWITCHING
Q401
DTC143EKA
FROM/TO CHROMAF
V_OUT
V_FEEDBACK
GND
H_OUT
ACL
TO SHEET 12
D
H.PLUSE
F_P.CON+15V
HEATER
H_GND
180V
C
FROM TV POWER
AT+25V
W813
GND
TO SHEET 9
H_GND
+B
B
FROM/TO MICRO
X_RAY
0
4.9
TO SHEET 11
X-RAY_TEST
SWITCHING 0
Q403
DTC114TKA
A
CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE SYMBOL
REPLACE ONLY WITH PART NUMBERS SPECIFIED.
3 4
V.OUTPUT IC
IC401 LA78040
THERMAL PROTECTION
-
AMP
+
PUMP UP
Vcc GND
1 2 3 4 5 6 7
3.6 25.9 2.0 0 12.5 26.3 3.7
R401
470
R413 R416
P/L 82K
15
W838
W897
18
T401
P/L
C416
31.0
3 4
P/L NC
31.0 2
0.2
0.5
1 6
H-DRIVE
0
Q405 22.3 1.3
2SC2271
R441_1 R440_1
R442_1
P/L
P/L
D409 15K +-1%
D412
HZ11B3L RMPG06J
10.8
0
SWITCHING
Q404
0
DTA144EKA W847
.

13/19" Deflection Circuit

5 6
16
19" ONLY
HS401_1
W860
763WSA0004
W807
L401
4.7mH 0909
W893
17
262.0
0
W816
1.3
H.OUTPUT
0
Q406
2SD2627LS-CBC11
W892
HS402
763WSA0004
5-10 P/L = See parts list for part description
7 8
HORIZONTAL SIGNAL
VERTICAL SIGNAL
TO DY
CP401
B05B-DVS
W857
W837
NC
FB401 P/L
COL
262.0
1 HV
E180
136.0
6
B+
135.0
2
AFC
0
9
HEA
R450_2
F
8.1
TER
10
P/L
GND S
8
0 GND
E12
0
NC
4 11
22.3
E27
NC
3 ABL 0.7
7
1.5
GND
8
E8
NC 5
C420
500V 220pF
R423
10K 1/4W
W811
R453 R454
120K 1/4W
47K P/L
PROV = Provisional
9 10
15 0.5V 5ms/div
5
4
3
2
1
V801
A48AGY13X77
9
16 1V 10ms/div
10
R
8
G
6
B
11
5 7 1
2 1
CD801
8M82025A
FOCUS
17 5V 20µs/div
SCREEN
18 0.5V 20µs/div
TVBR2000 SHEET 10