Read Sharp LC-20B2EA (serv.man5) Service Manual online
15
LC-20B2EA
TROUBLE SHOOTING TABLE
(Continued)
No picture
(3/3)
Colour is unusual
No picture image inversion
Gradation defect
Check all the settings microprocessor's adjust process menu.
Is output of
Check R1202
Is in/output of
Check R1209
Is output V0,V7,
V17,V21,V32,
V64,V122,V176,
V235,and V255
normal?
Check IC1106~
IC1108, IC1114
IC1115 and their
R0~R7
No
and its
SPIO and
No
No
and its
normal?
normal?
normal?
peripheral parts.
peripheral parts.
peripheral parts.
peripheral parts.
peripheral parts.
peripheral parts.
SPIO normal?
Yes
Y
es
Is output of
Is output of
Check R1204
Is output of U/D
Check IC
1206
G0~G7
Yes
B0~B7
No
No
and its
normal?
No
IC1207,Q1201
and their
Check R1203
and its
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