Kortek corporation
79
of
99
PDP R&D Center
10.7.2 G_Data Address Open (
Green Cell
Vertical Lines don’t exist on Video)
Check Logic MAIN Output
Check pin Open/Short → Replace the IC
Check G_Data of 80pin connector Output
EL1
EL2
EC1_Block
74,71,66,63
EC2_Block
58,55,50,31
EC3_Block
26,23,18,15
EC4_Block
10,7
74,71
FE1
EF1
EL2
FC5_Block
75,70,67,62
6,11,14,19
66,63,58,55
FC6_Block
59,54,27,22
22,27,54,59
50,31,26,23
FC7_Block
19,14,11,6
62,67,70,75
18,15,10,7
Check G_Data of Logic MAIN Output
LE01
Output pin
Input pin
IC2031
IC2030
IC2031
IC2030
EC1_Block
7,110,15,18
5,12,18
7
15,8,2
13
IC2030
IC2029
IC2030
IC2029
EC2_Block
23,26,31,50
14
3,9,16
6
17,11,4
IC2028
IC2027
IC2028
IC2027
EC3_Block
55,58,63,66
5,12,18
7
15,8,2
13
LE01
LE02
IC2027
IC2026
IC2025
IC2027
IC2026
IC2025
EC4_Block
71,74
7,10
14
3,18
7
6
17,2
13
IC2025
IC2024
IC2025
IC2024
FC5_Block
15,18,23,26
14
3,9,16
6
17,11,4
IC2023
IC2022
IC2023
IC2022
FC6_Blcok
31,50,55,58
5,12,18
7
15,8,2
13
IC2022
IC2021
IC2022
IC2021
FC7_Block
63,66,71,74
14
3,9,16
6
17,11,4
[ C O F ]
A d d r e s s O p e n
C O F
① L o g i c
B u f f e r
② L o g i c
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 4 , 1 7 , 5 0 ,
5 3 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 l a 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 u n d e r 9 6 l i n e
o f 3 8 4 - l i n e O u t p u t
C h e c k o u t p u t s i g n a l s ( 1 4 , 7 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 O F F a u l t - M o d u l e ⋯
R e p l a c e
C h e c k e a c h i n p u t - s i g n a l s ( 6 , 1 3 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 l d 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
☞ In c h e c k i n g i n p u t o r o u t p u t p i n s ,
C h e c k “N o s o ld e r / C o l d s o ld e r / L e a d b e n t ” o n C o n n e c t o r L e a d s
A f t e r c h e c k P i n - s h o r t i n g ,
c o ld 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 l i g 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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