Samsung SCC-B2335 Service Manual - Page 26

Trouble Shooting If the screen does not display properly Does the product No get supplied with proper power? Yes Are those PCBs No properly connected with each other? Yes Are the settings of the camera OSD No menu properly configured? Yes Is the lens connected properly No to the 4pin harness? p Yes Does each No regulator output a normal voltage? Yes Does the RESET voltage (HIGH) output properly? Yes No Refer to a pattern image of Table 4-2 Does the main No clock work properly? Yes If the product does not turn on, see the "If the product does not turn on" routine. Check if the power board properly outputs +5V, +3.3V, +17V,and -12V on CN2. Check each of the PCB connectors connectors, cables and FFC for the connection, and replace any component defective. 1.REAR < POWER:2pin HARNESS 2.REAR > CCD: 20PIN FFC Check if the menu settings are configured to your preference and adjust the settings (On/Off) if necessary. # For more information, see the user guide. Check the lens, and replace it if necessary. Especially, check if the harness is properly connected. Check CN3 of the CCD PCB and lens as well. Check the followings of the CCD PCB. -C86+: +1.2V -C87+: +2.5V -C75+: +3.3V (REG) -IC20-1pin: +9V -IC2-1pin: +15V -Q2-E: -8.5V(-6.8V) Check if the voltage on CCD PCB IC15-2pin is +3.3V. - Check IC15 for the bus line, and replace it if necessary. Check if the oscillator of the CCD PCB X1 work properly, and replace it if necessary. -NTSC: 28.63636MHz -PAL: 28.37500MHz A 4-4 Samsung Electronics