Daewoo TVZ 1341X, Service Manual

Page: 106 / 151

No
No
No
No
No
No
No
No
104
PB video signal missing
Is envelope output from
IY03 pin 7 ?
Is 5V supplied at
IY03 pin 15 ?
Check power
circuit
Check IN01
pin 23
Clean head or
change head
Check Power
circuit
Check IN01
pin 36
Change IY01
Is 5V sup-
plied to pin
IY02 9, 12 ?
Change TR
Is CLOCK
(3.58MHz)
Supplied at
IY01 pin 18 ?
Does XY01
crystal(3.58M
Hz) oscillate ?
Change XY01
(15PPM)
Change I503
Is SW pulse input into
IY03 pin 2 ?
Check IY01 pin
24, 27 5V ?
Check IY01 pin 4
EE mode : L,
PB mode : H
Change QY01
Change IY01
Check QY09 and
QY07, QY08, QY10
Change IY01
Is signal output from
pin 3 of I503?
Check pattern
Is signal output from
IY01 pin 36 ?
Is signal input into
IY01 pin 35 ?
Check
QY05, QY04
Is color signal output from
IY01 pin 2 ?
Is signal input into pin 3 ?
Is composite video signal
out from IY01 pin 11 ?
Is composite video signal
input into IY01 pin 9 ?
Is composite video signal
output from IY01 pin 28 ?
Check I503 pin 5
PLAY : H, EE : L
Above circuits ok
C.
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
Low
Yes
No
No
High
Yes
No
Yes
No
Yes
No
Yes