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10.8 Address Short
(Some Vertical lines appear to be linked on Video)
Check Logic MAIN Output
Check pin Open/Short → Replace the IC
R,G,B_DATA
–
Check connector(80pin) Output
EL1
EL2
EC1_Block
75~70(RGB), 67~62(RGB)
EC2_Block
59~54(RGB), 51~49/32~30
EC3_Block
27~22(RGB), 19~14(RGB)
EC4_Block
11~6(RGB)
75~70(RGB)
FE1
EF1
EL2
FC5_Block
75~70, 67~62
6~11, 14~19
67~62, 59~54
FC6_Block
59~54, 27~22
22~27, 54~59
51~49,32~30,27~22
FC7_Block
19~14,11~6
62~67,70~75
19~14, 11~6
R,G,B_DATA- Check Logic MAIN Output
LE01
Output pin
Input pin
IC2031
IC2030
IC2031
IC2030
EC1_Block 6~11/14~19
1~20
IC2030
IC2029
IC2030
IC2029
EC2_Block
22~27/30~32
49~51
1~20
IC2028
IC2027
IC2028
IC2027
EC3_Block 54~59/62~67
1~20
LE01
LE02
IC2027
IC2026
IC2025
IC2027
IC2026
IC2025
EC4_Block
70~75
6~11
1~20
IC2025
IC2024
IC2025
IC2024
FC5_Block
14~19,22~27
1~20
IC2023
IC2022
IC2023
IC2022
FC6_Blcok
30~32,54~59
1~20
IC2022
IC2021
IC2022
IC2021
FC7_Block
62~67,70~75
1~20
OK
OK
[ COF ]
Address Short
COF
① Logic
Buffer
② Logic
Buffer
Check output-signals(16,14,12,
9,7,5pin) of the VHCT244
(IC2602,03,08,05,07,06,09,00.
IC2700,01,05,02,04,03)
Check output-signals(13~18/
49~54pin) of the COF CON/
80pin
OK
NG
NG
NG
Refer to
the table
NG
Logic Buffer
OK
OK
Replace the Module
Check each input-signals(4,
6,8,11,13,15pin) of the VHCT244
OK
Check shorted Address.
Check outputs
(whether is shorted or not)
under 96 line
of 384-line-Output
COF Fault-Module⋯
Replace
☞ In checking input or output pins,
Check “No solder/Cold solder/Lead
bent” on Connector Leads
After check
coldsoldering &
Pin-shorting,
Replace the IC
After check Pin-shorting,
coldsoldering & Pin-opening,
Check contact and aligned state
of COF connector