Sharp VL-A111UL Service Manual - Page 36

Troubleshooting for the camera Charging mode troubles

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û VL-A111U/AH131U VL-AH151U/AH161U 6-8-2. Troubleshooting for the camera section No picture No color ûYES Check the lens drive circuit (IC551) and main signal line. ûYES Check IC401 (DSP), and its peripherals. û No auto white balance function No auto focus function No power zoom function Normal 6-8-3. Charging mode troubles Start û û û ûYES Check IC706 System Control, IC551 (Lens driver) and their peripherals. ûYES Check IC706 System Control, IC551 (Lens driver) and their peripherals. ûYES Check IC706 System Control, IC551 (Lens driver) and their peripherals. "H" Is ADP-DET "H"? *1 "L" "L" Is CHG-ON "L" or "H"? *2 "H" Is BAT DET "OV" ? NO YES NO BAT DET CK voltage is between 2.8V and 5.9V YES NO The output voltage of Q2901 is more than 7V at each pin. YES Check the circuit of system control. Check the circuit of system control. Check Q2911, R2914, R2915 and battery terminal unit. The battery is defective. Check the AC adapter. The voltage gathered to Q2905 is. more than 3V Check Q2905, IC2901 and the peripherals. less 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. 36

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36
VL-A111U/AH131U
VL-AH151U/AH161U
û
6-8-2. Troubleshooting for the camera section
No picture
Check the lens drive circuit (IC551) and main signal
line.
YES
û
û
No color
YES
Check IC401 (DSP), and its peripherals.
û
û
No auto white balance function
YES
Check IC706 System Control, IC551 (Lens
driver) and their peripherals.
û
û
YES
No auto focus function
Check IC706 System Control, IC551 (Lens
driver) and their peripherals.
û
YES
û
Check IC706 System Control, IC551 (Lens
driver) and their peripherals.
û
Normal
No power zoom function
6-8-3. Charging mode troubles
Start
Check the circuit of system control.
Check the circuit of system control.
Check Q2911, R2914, R2915
and battery terminal unit.
The battery is defective.
Check the AC adapter.
Check Q2905, IC2901 and the peripherals.
Is ADP-DET "H"? *1
Is CHG-ON "L" or "H"? *2
Is BAT DET "OV" ?
BAT DET CK voltage is
between 2.8V and 5.9V
The output voltage of Q2901 is
more than 7V at each pin.
The voltage gathered to Q2905
is.
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"
"L"
"H"
NO
YES
YES
more than 3V
"L"
YES
NO
NO
less than 3V