Hitachi DZMV238EAU Service Manual page 31

Symptom
position
Sound from external
microphone cannot be
recorded
Speaker sound volume
cannot be adjusted
Disc Navi Switch on
SWL circuit board
Zoom switch does not
work
EJECT switch does
not work
Date is not backed up
No image in LCD
Does not enter REC
PAUSE status
No image in EVF
Great block noise
during movie recording
*1 *1 *1 *1 *1: Solder lead wire, etc. to check point for measurement.
Check
Check point
2 TL6110 [AUD-B]
external microphone
jack (JK6003)
2 CN1505-15 [MAN-A]
CN1505-17 [MAN-A]
2 IC6101-6,11 [AUD-B]
2 SW3105 or [AUD-B]
SW3106
2 TL6131 (*1) [AUD-A]
1 CN1502-2 [MAN-A]
1 CN1505-23 [MAN-A]
2 Terminals of lithium-
ion batter (BA1801).
3 TL3604 [LCD]
----- ----------
1 CN1502-4 [MAN-A]
2 TL3719 (*1) [REF-A]
----- ----------
Detail of check Troubleshooting due to check results
Connection of NG: External microphone connection
external micro-
phone
Audio signal NG: Check Q6001L/R and their
Audio signal NG: Replace MAN circuit board or
OK:
Volume indicator on NG: Check switch SW3105 or
screen operates.
OK: Replace MAN board.
Switch operation NG: Replace L case (SWL circuit
changes voltage.
OK: PG6101-73 operation changes
Switch operation NG: Replace disc cover (zoom switch).
changes voltage. OK: IC1506 or its peripheral circuits
Switch operation NG: Check AVJ circuit board.
changes voltage.
OK: IC1506 or its peripheral circuits
3V DC are not NG: Check backup lithium-ion battery
supplied.
OK: Replace MAN circuit board.
BL-VCC(5V) NG: Replace REF circuit board.
OK: Check cable between LCD and
Check damage to NG: Replace L case (cable between
cable between LCD
and AUD circuit OK: Replace LCD circuit board.
boards
Switch operation NG: Replace disc cover (REC switch).
changes voltage. OK: IC1506 or its peripheral circuits
Video signal NG: IC3801 faulty. Replace REF circuit
OK: Check flat cable between EVF
---------- Movie encoder circuit faulty. Replace
MAN circuit board.
faulty. JK6003 contact faulty.
peripheral circuits on AVJ circuit
board.
check C6112L/R and C6154L/R.
IC6101 or its peripheral circuits
faulty
SW3106.
board).
voltage.
faulty. Replace MAN circuit board.
(SW6001)
faulty. Replace MAN circuit board.
(BA1801).
Or check cable between LCD
and AUD circuit boards.
AUD circuit boards.
Or check connections of MAN and
AUD circuit board.
LCD and AUD circuit boards).
faulty. Replace MAN circuit board.
board.
and REF circuit board.
1 - 25