Service manual

37
VL-A10U/UC/UA/UW/T/K
VL-AH30U/UC/T
û
6-5-2. Troubleshooting for the camera section
No picture
Check the lens drive circuit (IC551) and main signal
line.
YES
û
û
No color
YES
Check IC201 (DSP), and their peripherals.
û
û
No auto white balance function
YES Check IC706 (camera CPU part of I chip µ-computer),
IC551 (Lens driver) and its peripherals.
û
û
YES
No auto focus function
Check IC706 (camera CPU part of I chip µ-computer),
IC551 (Lens driver) and their peripherals.
ûYES
û
Check IC706 (camera CPU part of I chip µ-computer),
IC551 (Lens driver) and their peripherals.
û
Normal
No power zoom function
6-5-3. Charging mode troubles
Start
Check the circuit of SYSCON.
Check the circuit of SYSCON.
Check Q2911, R2914, R2915
and battery terminal unit.
Battery is defective.
Check the AC adapter.
Check Q2905, IC2901 and around the circuits.
Is ADP-DET "H"? *1
Is CHG-ON "L" or "H"? *2
Is BAT DET "OV" ?
Is BAT DET CK voltage more
than 2.8V or less than 5.9V.
Is the output voltage of Q2901,
1pin more than 7V.
Is Q2905 collect voltage
indicating.
Check the D2913 ,
R2921~R2923 and CP901.
*1: Inputting DC power and set the ADP DET "L".
*2: Inputting charging mode as CHG ON "H".
"H"
"L"
"H"
NO
YES
YES
more than 3V
"L"
YES
NO
NO
less than 3V