Commodore 1940 - Page 17

S.No Vertical Sync.
Vert. timing
Check V. Sync inputsignallevel
and timing
Is input
signal about 3-5Vp-p
~
! YES
YES
Refer to trouble in vertical line
14
NO
NO
Check Vert. Sync.
signal cable of
logic side of
IC601 or peripheral
device.
Trouble in 0406, 0412
IC601 peripheral
ci rcu it parts