Troubleshooting For The Camera Section - Sharp VL-A111S/H/E Service Manual

5-8-2. Troubleshooting for the camera section

No picture
No color
No auto white balance function
No auto focus function
No power zoom function
Normal
5-8-3. Charging mode troubles
Start
Is ADP-DET "H"? *1
"L"
Is CHG-ON "L" or "H"? *2
"H"
Is BAT DET "OV" ?
NO
BAT DET CK voltage is
between 2.8V and 5.9V
YES
The output voltage of Q2901 is
more than 7V at each pin.
YES
The voltage gathered to Q2905
is.
more than 3V
Check the D2913 ,
R2921-R2923 and CP901.
*1: Enter "L" into ADP-DET with the DC power on.
*2: Enter "H" into CHG ON in the charging mode.
"H"
Check the circuit of system control.
"L"
Check the circuit of system control.
YES
Check Q2911, R2914, R2915
and battery terminal unit.
NO
The battery is defective.
NO
Check the AC adapter.
Check Q2905, IC2901 and the peripherals.
less than 3V
û
YES Check the lens drive circuit (IC551) and main signal
line.
û
Check IC401 (DSP), and its peripherals.
YES
Check IC706 (camera CPU part of I chip µ-computer),
û
YES
IC551 (Lens driver) and their peripherals.
Check IC706 (camera CPU part of I chip µ-computer),
û
YES
IC551 (Lens driver) and their peripherals.
Check IC706 (camera CPU part of I chip µ-computer),
û
YES
IC551 (Lens driver) and their peripherals.
33
VL-A111S/H/E/AH131S/H/E
VL-AH151S/H/E