— 16 —
<No/Erratic display>
Is input 2-Pin of S-81250 HG-RD
(IC3) 9[V]?
Is output 3-Pin of S-81250 HG-RD
(IC3) 5[V]?
Y
Y
N
N
Check Q1, Q2
Replace IC3
Are voltage of several capacitors enough?
V1: 1.5 [V]
V2: 3.0 [V]
V3: 5.5 [V]
V4: 7.0 [V]
V5: 8.5 [V]
N
N
Does TAB ASS’Y make positive
contact with L571-1 ASS’Y?
*CONTRAST: MAX
Replace TAB ASS’Y
Resolder/Replace LSI1
Resolder
Y
Y
Resolder/Replace LSI, IC
N
<High current consumption>
*
Y
Check solder part of R4~R8 or
Replace C6, C7, C8, C9, C10
Check PCB
Is there any short circuit?
Y
N
Are the several capacitors OK?
Replace capacitors
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