Panasonic VDR-M30PP Service Manual page 50

Symptom
Error message "NO
DISC" appears even
when normal disc is
inserted
Error message "CHECK
DISC" appears
Message "Disc is not
formatted. Format the
disc now? YES NO"
appears
Date is not backed up
Zoom switch does not
work
EJECT switch does not
work
Does not enter REC
PAUSE status
No image in LCD
No image in EVF
Table 4-7-1 Trouble Diagnosis Table (2/3)
Service
Check points
position
----- -----
----- -----
----- -----
(B) TL7041 [AEL-A]
(A) TL1543 [MAN-B]
(A) TL1547 [MAN-B]
(B) TL1541 [MAN-B]
(D) TL3418 [LCD]
----- -----
(B) TL3719 [AEL-B]
Detail of check
Error message
appears approx. 1
second after disc is
inserted.
Error message
appears within 10
seconds after disc is
inserted
Disc is protected.
Normally initialized
disc was inserted
3V DC is not
supplied.
Switch operation
changes voltage.
Switch operation
changes voltage.
Switch operation
changes voltage.
INV5V(5V)
Check damage to flat
cable between LCD
circuit board and AEL
circuit board
Video signal
Troubleshooting due to
check results
Check connections of DRF
circuit board. If no
abnormality is found,
replace disc drive unit.
Replace disc drive unit.
Yes: Release protect.
No: Replace disc drive
unit.
Yes: Replace disc drive
unit.
No: Change or Initialize
disc.
NG: Check backup
Lithium battery
LA1801.
OK: Replace MAN board.
NG: Replace rear cover.
OK: Replace MAN circuit
board.
NG: Check cable between
LCD circuit board
and AEL circuit
board. Or replace
MAN circuit board.
OK: Check cable between
LCD circuit board
and AEL circuit
board. Or check
connections of MAN
and AEL circuit
boards.
NG: Replace fulcrum
block.
OK: Replace MAN circuit
board.
NG: IC3701 faulty.
OK: Check flat cable
between EVFunit,
SHE and AEL circuit
boards.
Or replace EVF unit.