Sharp GX15 Service Manual page 63

12. Pictures cannot be taken.
Is the camera (CA100) installed in the right direction?
Check that IC603 has not come off.
Is there conduction between TP604 and TP606?
Are all the pins of SO601 mounted properly?
Replace the camera (CA100). Does the camera turn on?
Is 2.8 V applied to SO601 pins 5, 10, and 23 (when camera is
on)?
SO601:
1. Is 2.8 V applied on pins 4 and 7?
2. Is the voltage 0 V on pin 8?
3. Is the 13 MHz frequency sent to pin 1?
(when camera is on)
SO601:
1. Is 2.8 V applied on pins 2 and 3 (when camera is on)?
2. Are voltages of pins 2 and 3 within the range 0 to 2.8 V
(when camera being activated)?
(To page 2-56)
CONFIDENTIAL
YES
YES
YES
YES
YES
YES
YES
B
Reinsert the camera (CA100).
NO
IC603 is mounted improperly.
NO
NO
SO601 is mounted improperly.
The camera (CA100) is defective.
NO
(Most likely poor contact caused by adhesive on pins)
The regulator IC602 or peripheral circuits are defective.
Is 2.8 V applied to TP601?
NO
Short terminal (TP601 to SO601 pin 23) and (TP601 to
SO601 pin 5) are defective.
IC603/IC106 is defective, or R602/C607 is mounted improp-
erly.
IC603 peripheral circuits:
1. Is 13 MHz frequency sent to R602?
NO
2. Is 2.93 V applied to C607?
(when camera is on)
Is 1.8 V applied to IC603 peripheral circuit TP607 (when cam-
era is on)?
YES
Is 2.93 V applied to IC603 peripheral circuit R604
(when camera is on)?
YES
IC603 or IC106 is defective.
R606 and C610 are mounted improperly.
R606 is defective.
Is 2.8 V applied to IC603 peripheral circuit R606
NO
(when camera is on)?
IC603 is defective.
2 – 55
GX15
NO
YES
NO
YES
NO
IC601 or peripheral circuits
are defective; R605/C609 is
mounted improperly.
NO
IC103 or peripheral circuits
are defective; R604/C608 is
mounted improperly.
NO
YES