Samsung SDC-30, Service Manual

Page: 47 / 71

Troubleshooting
6-8 Samsung Electronics
Power supply
DRAM test
Memory format
ASIC test
LCD test
Mode test
Timer test
Shot & Display
Power interrupt
: Supply power to the entire camera
: Check connections between DRAM and RISC
: Check the flash memory. The various information and image management
data required by the camera are stored in the flash memory.
* Normal memory : Go to the next step with 'Formatted' message.
* Abnormal memory : Display the window to ask for compulsory format
with 'Format is broken' message as shown in Fig 6-6. Press 'Enter' ( PC
keyboard) to retry memory format. Press '+' to enter the next step with-
out formatting. (If formatted, all image data are deleted.)
*Key : Stop Enter key : Continue
*Replace with new memory : when replacing with new memory ( due to
memory error ), go to the next step after automatic formatting.
: Check for any disconnections between ASIC, RISC and DRAM and
ASIC.
: Check each segment of camera LCD screen. Press 'Enter' key to stop
and enter the next step.
: Test by converting the camera into shot mode. The camera has two
types of shot functions VGA(640*480) and QVGA(320*240).
Test these mode conversions.
: Check the delay shot On/Off. Display the result by means of self
On/Off without special operation.
: Display the thumbnail after shot, to confirm normal or abnormal
operation.
: After completion of all tests and adjustments disconnect the power
supply.
Fig.6-6
6-4. Test items
Fig.6-5
Fig.6-7