Kortek corporation
80
of
99
PDP R&D Center
10.7.3 B_Data Address Open (
Blue Cell
Vertical Lines don’t exist on Video)
Check Logic Main Output
Check pin Open/Short → Replace the IC
Check B_Data of 80pin connector Output
EL1
EL2
EC1_Block
73,70,65,62
EC2_Block
57,54,49,30
EC3_Block
25,22,17,14
EC4_Block
9,6
73,70
FE1
EF1
EL2
FC5_Block
72,71,64,63
9,10,17,18
65,62,57,54
FC6_Block
56,55,24,23
25,26,57,58
49,30,25,22
FC7_Block
16,15,8,7
65,66,73,74
17,14,9,6
Check B_Data of Logic MAIN Output
LE01
Output pin
Input pin
IC2031
IC2030
IC2031
IC2030
EC1_Block 8,11,16,19
7,14
3,9
13,6
17,11
IC2030
IC2029
IC2030
IC2029
EC2_Block 24,27,32,51
16
5,12,18
4
15,8,2
IC2028
IC2027
IC2028
IC2027
EC3_Block 56,59,64,67
7,14
3,9
13,6
17,11
LE01
LE02
IC2027
IC2026
IC2025
IC2027
IC2026
IC2025
EC4_Block
72,75
8,11
16
5
3,9
4
15
17,11
IC2025
IC2024
IC2025
IC2024
FC5_Block
16,19,24,27
16
5,12,18
4
15,8,2
IC2023
IC2022
IC2023
IC2022
FC6_Blcok
32,51,56,59
7,14
3,9
13,6
17,11
IC2022
IC2021
IC2022
IC2021
FC7_Block
64,67,72,75
16
5,12,18
4
15,8,2
[ C O F ]
A d d r e s s O p e n
C O F
① L o g ic
B u f f e r
② L o g ic
B u f f e r
C h e c k o u t p u t - s i g n a l s ( 1 2 , 5 p i n )
o f t h e V H C T 2 4 4 ( I C 2 6 0 2 , 0 3 , 0 8 ,
0 5 , 0 7 , 0 6 , 0 9 , 0 0 . IC 2 7 0 0 , 0 1 , 0 5 ,
0 2 , 0 4 , 0 3 )
C h e c k o u t p u t - s i g n a l ( 1 5 , 1 8 , 5 1 ,
5 4 p i n ) o f t h e C O F C O N / 8 0 p in
O K
N G
N G
N G
R e p la c e t h e M o d u le
R e f e r t o
t h e t a b l e
N G
L o g i c B u f f e r
O K
O K
C h e c k A d d r e s s O p e n .
C h e c k o u t p u t s
( w h e t h e r i s o p e n e d o r n o t )
u n d e r 9 6 l i n e
o f 3 8 4 - lin e - O u t p u t
C O F F a u lt- M o d u l e ⋯
R e p la c e
C h e c k e a c h i n p u t - s i g n a l s ( 8 , 1 5 p i n )
o f t h e V H C T 2 4 4
A f t e r c h e c k
c o ld s o ld e r i n g &
P i n - s h o r t i n g ,
R e p l a c e t h e I C
A f t e r c h e c k P i n - s h o r t i n g ,
c o l d s o l d e r i n g & P i n - o p e n i n g ,
C h e c k c o n t a c t a n d a lig n e d s t a t e
o f C O F c o n n e c t o r
OK
NG
Содержание P42SV
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