2 – 48
GX10i
CONFIDENTIAL
YES
YES
YES
A
NO
NO
YES
NO
NO
YES
Back light FPC or LED defective.
NO
Back light FPC soldering defective.
YES
Nondefective.
Does the back light turn on?
Only sub-screen display back light.
Only main-screen display back
light or both displays’ back lights.
Which display does not light up? Main or sub?
YES
Is the main-screen display back light set to ON?
YES
Is the back light FPC properly soldered at the soldering
terminals?
NO
Voltage of 13 to 24 V applied between the back light FPC
soldering terminals?
Does the back light turn on?
ON Setting by the following menu.
Settings Phone settings External display Back light
YES
Is the sub-screen display back light set to ON?
A
ON Setting by the following menu.
Settings Phone settings Back light
Nondefective.
YES
LED001 or Q002 defective.
NO
Defective connection between IC104 64 pin and Q002
gate (G) or IC104 defective.
Voltage of 3 V applied to Q002 gate (G) terminal?
NO
YES
NO
Is the standby back light turned on?
Is the pulse shape sent to IC001 4 pin? (Don’t hold to Low?)
IC104 or Jumper (between IC104 33 pin and IC001 4 pin)
defective.
IC001, L001, D001 and L003 defective.
NO
Voltage of 3 V applied to Q001 gate (G) terminal?
IC104 defective.
NO
Voltage of less than 10 mV applied to Q001 drain (D) (R001
side) terminal?
Q001 defective. (approx. 95 mV at drain terminal)
R001, R003 and IC001 defective.
From the previous page
Содержание GX10i
Страница 36: ...2 32 GX10i CONFIDENTIAL Point Figure 66 Contact points Push Figure 67 Turning power on ...
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