Service manual

20
VE-CG30U
VE-CG40U
Camera troubleshooting
No
Yes
No
Check IC2 (in the checkable range since it is CSP).
Yes
No
No
Yes
Yes
No
No
Yes
Yes
No
No
Yes
Yes
No
No
Yes
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
Set mode SW to AUTO or MOV.
Is power voltage of CAM_5V, CAM_3.3V,
CAM_15V, and CAM_-7V normal?
Is LCD monitor normal?
Is OSD delivered?
Refer to LCD troubleshooting.
Refer to power troubleshooting.
Is pulse signal sent to TL4-TL13 of
IC1, 15V to TL1,
and -7V to TL3?
Check IC1 peripheral circuit
and IC2.
Is X1 oscillating?
Check IC4 and its peripheral
circuit.
Is signal delivered o
IC1 (20) pin (TL14)?
IC1 failure
Is signal sent to IC3 (30) pin?
Check Q2 and C26.
Is power [3.3V] of (13)(18)(24)(27)(33)(34)(40) of IC3
normal?
Check L4 and L5.
Is pulse signal sent to (16)(19)(20)(21)(22)(23) pins of
IC3?
Check IC2.
Is pulse signal sent to IC3 (46)(47)(48) pin?
Check IC204.
Check periphery of IC204.
Does IC204 operate normally?
Is video composite signal sent from (23) pin?
IC1 corresponds to the part 103 of the Camera Exploded View on page 82.
Are 10-bit signals (3) - (12) of IC3 sent?
IC3 failure
Check IC401 and its peripheral circuit.
L3 failure.
Is power supplied to L3[3.3V] ?
Is clock delivered from R15[CCDCLK]?
Check IC4 peripheral
circuit.
Is pulse delivered to R36[HD], R38[VD]?
Check IC204.
Is serial transfer pulse delivered to R33, R34, and
R35?
Check IC204.
Check whether pulse is delivered from each output
terminal of IC2. If there are terminals which do not
emit it, solder unwetting or IC failure.