Service manual

IMl035
F
lO T040J.lS~
~----------------H ~I
HORIZONTAL F~TRA~CE , i-
1
---- ..... [HIGH:+4±1.5V
DRIVE]-- 7ps l _________ _
- LOW:
tl t2 t2+7 O+O.4V
-O.OV
VIDEO -r~-B-L-A-N-KI-N-G---- H
~HIGH
UNBLANK .... ...:--IOJ.ls--t~ .... -._t---VIDEO PULSE---~ ...
MINIMUM INFORMATION
LOW
~ """E--TR--ACE-'-- V----..t·1
VERT'CAL1600 ~ ~ I f,HIGH
DRIVE ~s 50JlsMIN.
1.4msMAX.
'-- ________ ~ LOW
t5
-HIGH
V IDEO -r ... ----e-L-A-N-K-I-N-G--- V
UNBLANK
... ~--- 850J,Js - __ ;..~ .. ~~-VIDEO PULSE--+
MINIMUM INFORMATION
LOW
NOTES:
I. HORIZONTAL RETRACE IS INITIATED AT t2 (I.S TO 7.0,,1 AFTER t" DEPENDING ON SETTING OF AI03).
2. VERTICAL RETRACE IS INITIATED AT ts WITHOUT DELAY.
3. H=PERIOD OF ONE LINE: 63.S}!1 ~3% •
4. V= PERIOD OF ONE FIELD: 16.4ml MIN. TO 20.4ms MAX.
5. VIDEO PULSE WIDTH SHOULD BE SOns MIN.
TABLE I. t3 Vstl TIMING FOR CENTERED HORIZONTAL
TABLE 2. 'c. Vs ts TIMING FOR CENTERED VERTICAL
VIDEO AS FUNCTION OF V BLANKING WIDTH.
VERT ICAl VIO£O BLANKING
VIDEO AS FUNCTION OF H. BLANKING WIDTH.
HORIZONTAL VIDEO BLANKING
WIDTH . LEAD / LAG
WIDTH LEAD / LAG
t
s
- t6
~
10,,1 -5.S TO O~II
ISOp. IUpl
Ilpi -4.5 TO hll
tOOPI
ISOpl
14pI - 3.S T.O 2,,1
1000pi
100pi
16pI
-1.S TO 3pI
1l00pi
SOOPI
18pI
-I.S TO 4pI
1400pI 400pI
20pI
-O.S TO 5pI
Figure 1-1
Synchronization and Blanking Generator Waveform
1-2