Operation Manual

Page 25
MD 1772LB (B1770NSL/T)
MEDION
6-5 Out of Horizontal Synchronization
Ckeck or replace
the signal cable or
I701
Check or replace
the signal cable
or I701
Yes
Horizontal
sync present at
pin 15 of I401
Check
I401 pin 8 H output
frequency
Out of Horizontal
Synchronization
No
Yes
No
Check Q401, T401, Q402,
R4A6, D402, R403, D402
6-6 Out of Vertical Synchronization
Ckeck signal cable &
vertical sync input &
I701
Yes
Vertical sync
present at
pin 14 of I401
Check
I401 pin 24 ramp
frequency
Out of Vertical
Synchronization
No
Check C441