Samsung SCC-B2335, Service Manual

Page: 24 / 76

Trouble Shooting
4-2 Samsung Electronics
4-1 Trouble Shooting
If the product does not turn on
Check the camera if it works
properly
Check if the power supply adaptor
is properly connected to the
camera and check also the input
voltage. Check the rear indicator.
Is
there any
problem with the
input terminal FUSE
(F1) of the camera?
Do
you connect
the product to the power supply
properly?
D
CN2 8 i f
Does CN2-8pin of
the power PCB 9.6v
properly?
Does
CN2-3,4,5,6 of
the Power PCB properly
output - 12V 17V 5V 12V, +17V, +5V,
and +3.3V ,
respectively?
Does
the CCD PCB
get proper input voltages of +5V,
+3.3V, +15V, and -
12V?
Does
the CCD PCB
properly 1.2V,
+2.5V, +3.3V, +5V, +9V, +15V,
d 8 5V ( 6 8)
and -8.5V (-6.8),
respectively?
Check the POWER PCB FUSE (F1)
using DVM and replace it if
necessary.
Check the POWER PCB for the I/O
of the bus line, and replace the
PCB if necessary. (Check also the
TRANS and bus line)
Check CN4 of the CCD PCB for the
connection. Check the CN4
connector of the CCD BOARD is
properly connected to the harness
of CN2 of the POWER PCB, and
replace it if necessary.
Check if the POWER PCB is
properly connected to the CCD PCB,
d l d f ti PCB if and replace any defective
necessary. (Check U4 for the bus line and
if it work properly)
Check the voltage of each point
below using DVM.
-C86+: +1.2V
-C87+: +2.5V
-C35+: +3.3V
-C75+: +3.3V (REG)
C39+: +5V
--IC20-1pin: +9V
-IC2-1pin: +15V
-Q2-E: -8.5V(-6.8V)
No
Yes
No
Yes
No
Yes
Yes
Yes
Yes
No
No
No
Refer to a pattern
image of Table 4-1