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902SH
12. Sub Camera does not operate.
Replace the display PWB to a properly working
one, and activate the sub camera.
Is the image through the sub camera lens prop-
erly displayed?
NO
Replace the thin coaxial to a non-defective one,
and activate the sub camera.
Is the image through the sub camera lens prop-
erly displayed?
NO
Replace the main PWB to a properly working
one, and activate the sub camera.
Is the image through the sub camera lens prop-
erly displayed?
NO
The display PWB is defective.
13. The display backlight does not turn on.
Is fuse FS2001 mounted properly, and is there
conduction?
YES
Is the voltage applied to FS2001 when the volt-
age is applied to the battery terminals?
YES
Is the LED FPC unit properly soldered to
TP3008 and TP3009?
YES
Is 10 - 16 V sent to TP2001?
YES
Is 10 - 16 V sent to TP3025?
YES
LED is defective. LED FPC unit is defective.
IC2005 is defective.
CONFIDENTIAL
The display PWB is defective. Find the cause.
YES
The thin coaxial is defective.
YES
The main PWB is defective.
YES
FS2001 is mounted improperly, or the fuse is
NO
blown.
CN1501 and CN2000 are in poor contact with
NO
the flexible PWB, or the flexible PWB is broken.
The LED FPC unit is soldered improperly.
NO
IC2005, L2001, D2000, D2002, R2008, C2019,
NO
C2009 and C2012 are defective or mounted
improperly.
CN2000 and CN3001 are defective, mounted
NO
improperly, or in poor contact. The thin coaxial
is broken.
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