Sharp VN-EZ1U Service Manual page 18

CAMERA TROUBLESHOOTHING
AUDIO TROUBLESHOOTHING
LCD TROUBLESHOOTHING
7
Abnormal
Picture is not displayed.
I
1 Turn mode SW to MOVIE.
LNo _
Is LCD monitor normal?
-b Refer to the troubleshooting of the
Is OSD output? LCD supply.
No
r
l Refer to the troubleshooting
of the
CCD supply.
Is the terminal (12) (17), (33), (39), No Check IC33, L31 and R44.
(40) (42), (43) or (44) of power [3.3V]
b
of IC34 normal?
Check CCDFPC.
Is clock signal supplied to (16), (21) No
Check IC201 peripheral circuit.
and (22) and pulse signal supplied to
(20) and (23)?
I
Turn mode SW to MOVIE.
(Shooting mode)
b Refer to the troubleshooting of the
power supply.
Is the voltage of approx. 2 V output to
TL604?
Check R650 and R651.
I
Yes
v
Is signal output at pin (25) of IC602 No Check pins (24) and (25) of IC602,
when normal microphone is connected
l and Q652, Q653, FB603, FB604 and
and signal is supplied? their periphery.
I Yes
Is signal supplied to (18) and (20) of
Check IC201 and their periphery circuit.
IC602.?
Are pins (1 l), (13) and (14) of IC602
properly connected to IC205?
No b Check IC205 and their periphery.
Yes
-No
Is approx. 1 .OV voltage supplied to
b Check connection line of IC205.
IC602 is defective.
Is output signal output to A/D output
(2)-( 1
1
)?
IC34 is defective. Check IC201 and their periphery.
1
Yes
Is signal output at pins (4) and (6) of No b Check the pins (4) (5) and (6) of fC602
IC602?
,
as well as R604 and R605.
1 IC201 is defective.
1
Check C603 and R603.
Is the signal output to TL601 and
TL602?
Check IC601, its periphery, FB601 and
No
i
' FB602.
Yes
1 Check the speaker.
Is back light lit?
Refer to the troubleshooting of the
power supply.
Is -15V supplied to TL849, 7.5V to
No
Refer to the troubleshooting of the
TL853,15V to TL857 and 5V to TL860? b power supply.
I Yes
Check TFT FPC.
+
No
IS video signal suppm1
+ Check IC201, its periphery and Q201.
I Yes
Check TFT FPC.
+-No
Are 6 to 9V common signals output at b Check IC802 and their periphery.
TL824 and TL868?
I Yes
Is approx. 2.4V signal output at pin (2) No
+ Check IC806, its periphery, and IC806
of IC806? to IC205 connection.
Yes
1 IS IC801 oscillated at
No
d Check lC801 and X801.
1
I
Yes
Is signal output at TL831, TL832 and
Check IC801.
TL833?
I
1
Yes
1 Defective LCD unit or FPC wire breakaae
I
Medium is not read.
I Yes
Defective medium
1
Yes
Formatting with PC
I Yes
No
+ Check the smart medium socket, lC201
and its periphery.
No
Medium normal.