SERVICING (continued)
FA - SERVICING
3-4
During the introduction of FA chassis the TA1253AN version was introduced, which is an upgrade from the N
version, the following is a comparison of both processors:
The IC2200 receives the video signal from the A/V switch
IC2990, P221-01438, which is switching the video sig-
nals from the Front and Rear jacks. Also involved is the
digital comb filter IC2400, 221-01449. The YUV input
is processing directly through the IC2200. The ABL cir-
cuit employed has been adjusted to allow to the IC2200
a maximum permissible Cathode current of 1.8 mA.
Data
TB1253AN
Specifications
ITEM
TB1253N
PIF block
-
< Improve>
-
-
Y white --> black ringing
PIF horizontal noise
AFT defeat (" IF lock" detection)
920 KHz beat
H VCO temperature drift
V-S correction
Color Gain
Auto flesh control range
H output re-start frequency
V skew performance
Read Bus "V lock", "VP"
V wide BLK1 specification
V centering variable range
"H lock" detection
10 degree
OK Below Y 100%
CHROMA block
38dB
+100KHz
Y block
OK Below Y 130%
TINT control center shift
C-TRAP fo shift
Y linearity
-
"Vlock"
+/-20%
EVEN: 9/8.5H, ODD 8.5/8H
(upper/lower)
+/-25%
45dB
below +20KHz
below 3degree
"Lock-in" by Hsync 16 counts
14.7 KHz
Asyncronous
1.9 Hz/mV
-
0.62 Vp-p
1
0.86 Vp-p
2 dB UP
(narrow)
TEXT block
(wide)
CR input D range
15.7KHz
Stop when low lwvwl
2.5 Hz/mV
DEF block
H output stop timing
H AFC sensitivity
< Improve >
20%/-12%
EVEN: 9/9.5H, ODD 8.5/9H
(upper/lower)
+/-22%
"Lock-out" by no Hsync 56 counts
-
"VP"
Содержание RP-29FA40-M
Страница 40: ...P NO 3828VD0097A April 2001 ...