Zanussi 22ZT907 Service Manual page 29

Transistors used on teletext p.c.b.
Transistors
1
BC 548 B
T
BC 548 B
T 2
BC 548 B
T 3
BC 548 B
T 4
BC 548 B
BC 548 B
T 6
BC 548 B
T 7
BC 548 B
T 8
BC 548 B
BC 548 B
T 10
11
BC 548 B
T
BC 548 B
T 12
Electronic functions
Type
Video preamplifier
Video preamplifier
Video input signal switch
T3 switch enabler
Teletext synchro. switch
Synchro. signal emitter follower
Command inverter
B signal emitter follower
R signal emitter follower
Blanking signal emitter follower
Brightness signal emitter follower